ADP1712 Analog Devices, ADP1712 Datasheet
ADP1712
Available stocks
Related parts for ADP1712
ADP1712 Summary of contents
Page 1
... The ADP1712/ADP1713/ADP1714 are available in 16 fixed output voltage options. The ADP1712 is also available in an adjustable version, which allows output voltages that range from 0 via an external divider. The ADP1712 fixed version allows an external capacitor to be connected to program the Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use ...
Page 2
... Theory of Operation ...................................................................... 10 Soft-Start Function (ADP1712) ................................................ 10 REVISION HISTORY 6/09—Rev Rev. A Updated Outline Dimensions ....................................................... 15 Changes to Ordering Guide .......................................................... 15 1/07—Revision 0: Initial Version Adjustable Output Voltage (ADP1712 Adjustable) ............... 11 Bypass Capacitor (ADP1713) ................................................... 11 Track Mode (ADP1714) ............................................................ 11 Enable Feature ............................................................................ 11 Undervoltage Lockout (UVLO) ............................................... 11 Application Information ................................................................ 12 Capacitor Selection .................................................................... 12 Current Limit and Thermal Overload Protection ................. 12 Thermal Considerations ...
Page 3
... ACCURACY (ADP1712 ADJUSTABLE) LINE REGULATION ∆V 2 LOAD REGULATION ∆V 3 DROPOUT VOLTAGE V 4 START-UP TIME T ADP1712 Adjustable and ADP1714 ADP1712 External Soft Start ADP1713 5 CURRENT LIMIT THRESHOLD I THERMAL SHUTDOWN THRESHOLD TS THERMAL SHUTDOWN HYSTERESIS TS SOFT-START SOURCE CURRENT SS (ADP1712 WITH EXTERNAL SOFT START) UVLO ACTIVE THRESHOLD ...
Page 4
... ADP1713 ADP1712 and ADP1714 POWER SUPPLY REJECTION RATIO PSRR ADP1713 ADP1712 and ADP1714 1 Accuracy when OUT is connected directly to ADJ. When OUT voltage is set by external feedback resistors, absolute accuracy in adjust mode depends on the tolerances of resistors used. 2 Based on an end-point calculation using 10 mA and 300 mA loads. See 3 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage ...
Page 5
... –0 Table 3. Thermal Resistance –0 Package Type –0 5-Lead TSOT –65°C to +150°C –40°C to +125°C 300°C ESD CAUTION JEDEC J-STD-020 Rev Page ADP1712/ADP1713/ADP1714 θ Unit JA 170 °C/W ...
Page 6
... Pin No OUT ADP1712 ADJUSTABLE GND 2 TOP VIEW (Not to Scale) EN ADJ Figure 7. 5-Lead TSOT (UJ-Suffix) ADP1714 Pin No. Mnemonic Description 1 IN Regulator Input Supply. Bypass IN to GND with a 2.2 μF or greater capacitor. 2 GND Ground. ...
Page 7
... LOAD I = 300mA LOAD 3.280 3.3 3.8 4.3 V (V) IN Figure 11. Output Voltage vs. Input Voltage = 2.2 μ 25°C, unless otherwise noted. A 110 100 1000 4.8 5.3 Rev Page ADP1712/ADP1713/ADP1714 450 I = 300mA LOAD 400 350 I = 200mA LOAD 300 250 I = 100mA LOAD 200 150 I = 10mA LOAD I = 1mA 100 ...
Page 8
... ADP1712/ADP1713/ADP1714 180 160 140 120 100 0 (mA) LOAD Figure 15. Dropout Voltage vs. Load Current 3.35 3.30 3.25 3.20 3.15 3.10 3.05 3.00 3.20 3.25 3.30 3.35 3.40 3.45 V (V) IN Figure 16. Output Voltage vs. Input Voltage (in Dropout) 1000 900 800 700 600 500 I 400 LOAD 100mA I = LOAD 300 10mA 200 I = 1mA LOAD 100 I = 100µA ...
Page 9
... FREQUENCY (Hz) Figure 22. ADP1713 Power Supply Rejection Ratio vs. Frequency (10 nF Bypass Capacitor) –50 –55 –60 –65 – Figure 23. ADP1712 Adjustable Power Supply Rejection Ratio vs. –45 – 100mA LOAD = 10mA –55 –60 –65 –70 1M 10M Figure 24. ADP1712 Adjustable Power Supply Rejection Ratio vs. ...
Page 10
... PMOS device is pulled higher, allowing less current to pass and decreasing the output voltage. The ADP1712 is available in two versions, one with a fixed output voltage and one with an adjustable output voltage. The fixed output voltage is set internally to one of sixteen values between 0.75 V and 3 ...
Page 11
... ADJUSTABLE OUTPUT VOLTAGE (ADP1712 ADJUSTABLE) The ADP1712 adjustable version can have its output voltage set over a 0 5.0 V range. The output voltage is set by connecting a resistive voltage divider from OUT to ADJ. The output voltage is calculated using the equation R1/R2) OUT where the resistor from OUT to ADJ. ...
Page 12
... Consider the case where a hard short from OUT to ground occurs. At first the ADP1712/ADP1713/ADP1714 current limit, so that only 500 mA is conducted into the short. If self heating of the junction is great enough to cause its temperature to rise above 150° ...
Page 13
... THERMAL CONSIDERATIONS To guarantee reliable operation, the junction temperature of the ADP1712/ADP1713/ADP1714 must not exceed 125°C. To ensure the junction temperature stays below this maximum value, the user needs to be aware of the parameters that contribute to junction temperature changes. These parameters include ambient temperature, power dissipation in the power device, and thermal resistances between the junction and ambient air (θ ...
Page 14
... PRINTED CIRCUIT BOARD LAYOUT CONSIDERATIONS Heat dissipation from the package can be improved by increasing the amount of copper attached to the pins of the ADP1712/ ADP1713/ADP1714. However, as can be seen from Table 5, a point of diminishing returns eventually is reached, beyond which an increase in the copper size does not yield significant heat dissipation benefits ...
Page 15
... ADP1712AUJZ-1.15R7 –40°C to +125°C 1 ADP1712AUJZ-1.2-R7 –40°C to +125°C 1 ADP1712AUJZ-1.3-R7 –40°C to +125°C 1 ADP1712AUJZ-1.5-R7 –40°C to +125°C 1 ADP1712AUJZ-1.8-R7 –40°C to +125°C 1 ADP1712AUJZ-2.5-R7 –40°C to +125°C 1 ADP1712AUJZ-3.0-R7 –40°C to +125°C 1 ADP1712AUJZ-3.3-R7 –40°C to +125°C ADP1712AUJZ-R7 1 – ...
Page 16
... TSOT 1.80 5-Lead TSOT 2.50 5-Lead TSOT 3.00 5-Lead TSOT 3.30 5-Lead TSOT 3.3 ADP1712 Fixed 3.3 V Output with Soft Start Evaluation Board Adjustable, ADP1712 Adjustable Output Evaluation Board but set to 1.6 3.3 ADP1713 Fixed 3.3 V Output with Bypass Evaluation Board 3.3 ADP1714 Fixed 3.3 V Output with Track Mode Evaluation Board ...