SQ24 Power-One, SQ24 Datasheet
SQ24
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SQ24 Summary of contents
Page 1
... The use of 100% automation for assembly, coupled with advanced electric and thermal design, results in a product with extremely high reliability. Operating from an 18-36 V input, the SQ24 Series converters of the SemiQ™ Family provide any standard output voltage from 12 V down to 1.0 V. Outputs can be trimmed from – ...
Page 2
... order to insure specified operation of over-voltage protection circuitry. See “Output Voltage Adjust/Trim” for NOM OUT detailed information. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES Continuous Non-latching 1.0 - 3.3 V 5 ...
Page 3
... An external voltage source (±20V maximum) may be connected directly to the ON/OFF input, AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC in which case it must be capable of sourcing or sinking up to 1mA depending on the signal polarity. See the Start-up Information section for system timing waveforms associated with use of the ON/OFF pin ...
Page 4
... Semi Family TM Vin (+) Converter (Top View) ON/OFF Vin Vin (-) AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC To decrease the output voltage (Fig. D), a trim resistor, R T-DECR SENSE(-) (Pin 5), with a value of: R − T DECR ...
Page 5
... Radio disturbance characteristics - Limits and methods of measurement. With the addition of a simple external filter (see application notes), all versions of the SQ24 Series of converters pass the requirements of Class B conducted emissions per EN55022 and FCC, and meet at a minimum, Class A radiated emissions per EN 55022 and Class B per FCC Title 47CFR, Part 15-J ...
Page 6
... Temperature on the PCB at the thermocouple location shown in Fig. H should not exceed 118 °C in order to operate inside the derating curves. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. H: Location of the thermocouple for thermal testing. Efficiency Fig. x.5 shows the efficiency vs. load current plot for ambient temperature of 25 º ...
Page 7
... For ( typically 4 ms after release of ON/OFF pin. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC . IN ON/OFF STATE typically 3 1 ON/OFF ...
Page 8
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 4 ADC, 12 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25MHz bandwidth ...
Page 9
... Ambient Temperature [°C] Fig. 12V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T04120 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2 ...
Page 10
... SQ24T/S04120 (12 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 12V.5: Efficiency vs. load current and input voltage for SQ24T/S04120 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 10.00 8.00 6.00 4.00 2.00 0. Load Current [Adc] Fig. 12V.7: Power dissipation vs. load current and input voltage for SQ24T/S04120 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 11
... Bottom trace: load current (1 A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.5 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 12V.10: Turn-on transient at full rated load current (resistive) plus 1,000μ ...
Page 12
... Fig. 12V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 12V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μ ...
Page 13
... Iout [Adc] Fig. 12V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 12V.18: Load current (top trace, 5 A/div., 20 ms/div.) into a 10 mΩ ...
Page 14
... Ambient Temperature [°C] Fig. 8.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T05080 converter with D height pins mounted vertically with Vin = 24 V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120°C. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input ...
Page 15
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 8 ADC, 6.0 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 16
... Ambient Temperature [°C] Fig. 6.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T08060 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 4 400 LFM (2 ...
Page 17
... SQ24T/S08060 (6.0 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 6.0V.5: Efficiency vs. load current and input voltage for SQ24T/S08060 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 10.00 8.00 6.00 4.00 2.00 0. Load Current [Adc] Fig. 6.0V.7: Power dissipation vs. load current and ambient temperature for SQ24T/S08060 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 18
... Bottom trace: load current (2A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 6.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000μF at Vin = 24V, triggered via ON/OFF pin ...
Page 19
... Fig. 6.0V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 6.0V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 20
... Fig. 6.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 12 9 Fig. 6.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 21
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 10 ADC, 5.0 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 22
... Ambient Temperature [°C] Fig. 5.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T10050 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 23
... SQ24T/S10050 (5.0 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 5.0V.5: Efficiency vs. load current and input voltage for SQ24T/S10050 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 10.00 8.00 6.00 4.00 2.00 0. Load Current [Adc] Fig. 5.0V.7: Power dissipation vs. load current and input voltage for SQ24T/S10050 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 24
... Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 5.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000 μF at Vin = 24V, triggered via ON/OFF pin ...
Page 25
... Fig. 5.0V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 5.0V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 26
... Fig. 5.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 10 15 Fig. 5.0V.18: Load current (top trace, 10 A/div., 20 ms/div.) into a 10 mΩ ...
Page 27
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 3.3 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 28
... Ambient Temperature [°C] Fig. 3.3V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15033 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 29
... Load Current [Adc] Fig. 3.3V.5: Efficiency vs. load current and input voltage for SQ24T/S15033 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 8.00 6.00 4.00 2.00 0. Load Current [Adc] Fig. 3.3V.7: Power dissipation vs. load current and input voltage for SQ24T/S15033 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 30
... Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 3.3V.10: Turn-on transient at full rated load current (resistive) plus 10,000 μF at Vin = 24V, triggered via ON/OFF pin ...
Page 31
... Fig. 3.3V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 3.3V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 32
... Fig. 3.3V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 3.3V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 33
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 2.5 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 34
... Ambient Temperature [°C] Fig. 2.5V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15025 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 35
... Load Current [Adc] Fig. 2.5V.5: Efficiency vs. load current and input voltage for SQ24T/S15025 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 8.00 6.00 4.00 2.00 0. Load Current [Adc] Fig. 2.5V.7: Power dissipation vs. load current and input voltage for SQ24T/S15025 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 36
... A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 2.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 μF at Vin = 24V, triggered via ON/OFF pin ...
Page 37
... Fig. 2.5V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 2.5V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 38
... Fig. 2.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 2.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 39
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 2.0 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 40
... Ambient Temperature [°C] Fig. 2.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15020 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 41
... SQ24T/S15020 (2.0 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 2.0V.5: Efficiency vs. load current and input voltage for SQ24T/S15020 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 6.00 5.00 4.00 3.00 2.00 1.00 0. Load Current [Adc] Fig. 2.0V.7: Power dissipation vs. load current and input voltage for SQ24T/S15020 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 42
... Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 2.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000μF at Vin = 24V, triggered via ON/OFF pin ...
Page 43
... Fig. 2.0V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 2.0V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 44
... Fig. 2.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 2.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 45
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 1.8 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth 120 Hz 1 ...
Page 46
... Ambient Temperature [°C] Fig. 1.8V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15018 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 47
... SQ24T/S15018 (1.8 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 1.8V.5: Efficiency vs. load current and input voltage for SQ24T/S15018 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 6.00 5.00 4.00 3.00 2.00 1.00 0. Load Current [Adc] Fig. 1.8V.7: Power dissipation vs. load current and input voltage for SQ24T/S15018 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 48
... Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 1.8V.10: Turn-on transient at full rated load current (resistive) plus 10,000μF at Vin = 24V, triggered via ON/OFF pin ...
Page 49
... Fig. 1.8V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.8V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 50
... Fig. 1.8V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 1.8V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 51
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40 º ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 1.5 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 52
... Ambient Temperature [°C] Fig. 1.5V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15015 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 53
... SQ24T/S15015 (1.5 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 1.5V.5: Efficiency vs. load current and input voltage for SQ24T/S15015 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 6.00 5.00 4.00 3.00 2.00 1.00 0. Load Current [Adc] Fig. 1.5V.7: Power dissipation vs. load current and input voltage for SQ24T/S15015 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 54
... A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 1.5V.10: Turn-on transient at full rated load current (resistive) plus 10,000 μF at Vin = 24V, triggered via ON/OFF pin ...
Page 55
... Fig. 1.5V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.5V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 56
... Fig. 1.5V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 1.5V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 57
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40ºC to 85ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 1.2 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 58
... Ambient Temperature [°C] Fig. 1.2V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15012 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 59
... SQ24T/S15012 (1.2 Volts Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 1.2V.5: Efficiency vs. load current and input voltage for SQ24T/S15012 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 6.00 5.00 4.00 3.00 2.00 1.00 0. Load Current [Adc] Fig. 1.2V.7: Power dissipation vs. load current and input voltage for SQ24T/S15012 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 60
... A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 1.2V.10: Turn-on transient at full rated load current (resistive) plus 10,000 μF at Vin = 24V, triggered via ON/OFF pin ...
Page 61
... Fig. 1.2V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.2V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 62
... Fig. 1.2V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 1.2V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 63
... EFFICIENCY 100% Load 50% Load Additional Notes: 1. -40ºC to 85ºC AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC NOTES 15 ADC, 1.0 VDC Out @ 18 VDC In Vin = 24 V, converter disabled Vin = 24 V, converter enabled 25 MHz bandwidth ...
Page 64
... Ambient Temperature [°C] Fig. 1.0V.1: Available load current vs. ambient air temperature and airflow rates for SQ24T15010 converter with B height pins mounted vertically with Vin = 24V, air flowing from pin 3 to pin 1 and maximum FET temperature ≤ 120° 500 LFM (2.5 m/s) 400 LFM (2 ...
Page 65
... SQ24T/S15010 (1.0 Volt Out) 0.95 0.90 0.85 0.80 0.75 0.70 0. Load Current [Adc] Fig. 1.0V.5: Efficiency vs. load current and input voltage for SQ24T/S15010 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1.5 m/s) and Ta = 25°C. 6.00 5.00 4.00 3.00 2.00 1.00 0. Load Current [Adc] Fig. 1.0V.7: Power dissipation vs. load current and input voltage for SQ24T/S15010 converter mounted vertically with air flowing from pin 3 to pin rate of 300 LFM (1 ...
Page 66
... A/div.). Current slew rate: 0.1 A/μ μF ceramic. Time scale: 0.2 ms/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Fig. 1.0V.10: Turn-on transient at full rated load current (resistive) plus 10,000μF at Vin = 24V, triggered via ON/OFF pin ...
Page 67
... Fig. 1.0V.15: Input reflected ripple current, i measured at input terminals at full rated load current and Vin = 24V. Refer to Fig. 1.0V.14 for test setup. Time scale: 1 μs/div. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC μH ...
Page 68
... Fig. 1.0V.17: Output voltage vs. load current showing current limit point and converter shutdown point. Input voltage has almost no effect on current limit characteristic. AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC 20 15 Fig. 1.0V.18: Load current (top trace, 20 A/div., 20 ms/div.) into a 10 mΩ ...
Page 69
... Physical Information 1 TOP VIEW 2 3 SIDE VIEW SQ24S Pinout (Surface Mount) 1 TOP VIEW 2 3 SIDE VIEW SQ24T Pinout (Through-hole) AUG 25, 2006 revised to MAR 19, 2007 SQ24 Series DC-DC Converter Data Sheet 18-36 VDC Input; Standard Outputs from 1-12 VDC Height Option ...
Page 70
... A 04 ⇒ (12 The example above describes P/N SQ24T05080-NBA0: 18-36 V input, through-hole mounting, 5 8.0 V output, negative ON/OFF logic, a maximum height of 0.352”, a through the board pin length of 0.188”, and RoHS lead-solder-exemption compliancy. Please consult factory regarding availability of a specific version. ...