ncp1595 ON Semiconductor, ncp1595 Datasheet
ncp1595
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ncp1595 Summary of contents
Page 1
... Current Mode PWM Converter for Low Voltage Outputs The NCP1595/NCP1595A is a current mode PWM buck converter with integrated power switch and synchronous rectifier. It can provide up to 1.5 A output current with high conversion efficiency. High frequency PWM control scheme can provide a low output ripple noise. ...
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... Moisture Sensitivity Level (MSL): 1 per IPC/JEDEC standard: J−STD−020A. 4. The maximum package power dissipation limit must not be exceeded J(max qJA L1 LX VCCP NCP1595 GND VCC EN FB Figure 1. Typical Operating Circuit Symbol = 25°C A http://onsemi.com 0 0 OUT ...
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... Maximum Duty Cycle Soft−Start Time ( Main PFET Switch Current Limit (Note 5) ENABLE (NCP1595A) Enable Threshold High (NCP1595A Only) Enable Threshold Low Enable bias current ( Total Device Quiescent Current Into CCP IN Quiescent Current Into V ...
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... Pin connected internally to power switch. Connect externally to inductor. 4 VCCP Power connection to the power switch. 5 VCC IC power connection Connection NCP1595A 1 FB Feedback pin. Part is internally compensated. Only necessary to place a voltage divider or connect the out- put directly to this pin. 2 GND Ground 3 LX Pin connected internally to power switch ...
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... Device V Inductor Model OUT NCP1595/ 3.3 V CDC5D23 3R3 (1 A) NCP1595A CDRH6D38 3R3 (1.5 A) NCP1595/ 2.5 V CDC5D23 3R3 (1 A) NCP1595A CDRH6D38 3R3 (1.5 A) NCP1595/ 1.5 V CDC5D23 3R3 (1 A) NCP1595A CDRH6D38 3R3 (1.5 A) NCP1595/ 1.2 V CDC5D23 3R3 (1 A) NCP1595A CDRH6D38 3R3 (1.5 A) Inductor (L1) C (C1 ...
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TYPICAL OPERATING CHARACTERISTICS 0.30 0.25 0.20 0.15 0.10 0.05 0.00 −40 0 LOW SIDE AMBIENT TEMPERATURE, (T Figure 3. Switch ON Resistance vs. Temperature 1.3 1.2 1.1 1.0 0.9 0.8 0.7 −40 0 AMBIENT TEMPERATURE, (T Figure 5. Switching Frequency ...
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V = 3.3 V OUT 1 3 0.5 OUT 0.0 −0.5 −1.0 −1.5 10 100 1000 Figure 9. Output Voltage Change vs. Output Current 1 ...
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100 mA 3.3 mH LOAD Upper Trace: L Pin Switching Waveform div. X Middle Trace: Output Ripple Voltage div. Lower Trace: Inductor Current, 1 ...
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3.3 mH OUT Upper Trace: Output Dynamic Voltage, 100 mV / div. Lower Trace: Output Current, 500 mA / div. Figure 21. Load Regulation for V OUT ...
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... Introduction NCP1595 operates as a current mode buck converter with switching frequency at 1.0 MHz. The P−Channel main switch is set by the positive edge of the clock cycle going into the PWM latch. The main switch is reset by the PWM latch in the following three cases: 1. PWM comparator output trips as the peak inductor current signal reaches a threshold level established by the error amplifier ...
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... In the PWM buck converter, the input current is pulsating current with switching noise. Therefore, a bypass input capacitor must choose for reduce the peak current drawn from the power supply. For NCP1595, low ESR ceramic capacitor should be used for most of cases. Also, the input capacitor should be placed as close as possible to the V pin for effective bypass the supply noise ...
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... MAX A 0.80 0.90 1.00 A1 0.00 0.03 0.05 A3 0.20 REF b 0.35 0.40 0.45 D 3.00 BSC D2 2.40 2.50 2.60 E 3.00 BSC E2 1.50 1.60 1.70 e 0.95 BSC K 0.21 −−− −−− L 0.30 0.40 0.50 SOLDERING FOOTPRINT* 0.950 0.0374 1.700 0.0685 2.60 0.1023 mm SCALE 10:1 inches ON Semiconductor Website: www.onsemi.com Order Literature: http://www.onsemi.com/orderlit For additional information, please contact your local Sales Representative NCP1595/D ...