ADP1706 Analog Devices, ADP1706 Datasheet
ADP1706
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ADP1706 Summary of contents
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... The ADP1706/ADP1707 are available in 16 fixed output volt- age options. The ADP1708 is available in an adjustable version, which allows output voltages that range from 0 5.0 V via an external divider. The ADP1706 allows an external soft start capacitor to be connected to program the start-up time; the Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable ...
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... Thermal Resistance ...................................................................... 5 ESD Caution.................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 7 Theory of Operation ...................................................................... 10 REVISION HISTORY 6/07—Revision 0: Initial Version Soft Start Function (ADP1706) ................................................ 10 Adjustable Output Voltage (ADP1708)................................... 11 Track Mode (ADP1707) ............................................................ 11 Enable Feature ............................................................................ 11 Application Information................................................................ 12 Capacitor Selection .................................................................... 12 Voltage Tracking Applications.................................................. 12 Current Limit and Thermal Overload Protection ................. 12 Thermal Considerations ...
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... DROPOUT VOLTAGE 4 START-UP TIME ADP1707 and ADP1708 ADP1706 CURRENT LIMIT THRESHOLD 5 THERMAL SHUTDOWN Thermal Shutdown Threshold Thermal Shutdown Hysteresis SOFT START SOURCE CURRENT (ADP1706 ACCURACY (ADP1707) OUT TRK EN INPUT EN Input Logic High EN Input Logic Low EN Input Leakage Current ADJ INPUT BIAS CURRENT (ADP1708) ...
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... ADP1706/ADP1707/ADP1708 Parameter OUTPUT NOISE POWER SUPPLY REJECTION RATIO 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 1 A loads. See Figure 11 for typical load regulation performance for loads less than 10 mA. ...
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... Package Type –0 8-Lead SOIC (Exposed Paddle) –0 8-Lead 3 mm × LFCSP (Exposed Paddle) –65°C to +150°C –40°C to +125°C JEDEC J-STD-020 ESD CAUTION Rev Page ADP1706/ADP1707/ADP1708 θ Unit JA 58 °C/W 66 °C/W ...
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... Rev Page PIN INDICATOR GND 2 ADP1706 7 SENSE OUT TOP VIEW (Not to Scale OUT Figure 5. 8-Lead LFCSP, ADP1706 PIN TRK INDICATOR GND 2 7 SENSE ADP1707 OUT TOP VIEW (Not to Scale OUT Figure 7. 8-Lead LFCSP, ADP1707 ...
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... I = 500mA LOAD 110 1400 1200 1000 100 1000 2100 1800 I = 10mA LOAD I = 100mA 1500 LOAD I = 300mA LOAD 1200 5.0 5.4 Rev Page ADP1706/ADP1707/ADP1708 LOAD 800 I = 500mA LOAD 600 I = 300mA LOAD 400 I = 100mA LOAD I = 10mA LOAD I = 100µA 200 LOAD 0 –40 10 ...
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... ADP1706/ADP1707/ADP1708 400 350 300 250 200 150 100 100 I (mA) LOAD Figure 16. Dropout Voltage vs. Load Current 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 3.0 3.2 3.4 3.6 V (V) IN Figure 17. Output Voltage vs. Input Voltage (in Dropout) 2500 2000 1500 1000 500 0 3.0 3.2 3.4 3.6 V (V) IN Figure 18. Ground Current vs. Input Voltage (in Dropout) 1000 Figure 19. Load Transient Response, C ...
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... OUT LOAD – 1mA LOAD I = 100µA LOAD –30 –40 –50 –60 –70 –80 –90 10 100 1k 10k 100k FREQUENCY (Hz) Figure 23. ADP1706 Power Supply Rejection Ratio vs. Frequency 50mV I = 300mA RIPPLE LOAD 200mA IN LOAD – 0. 100mA OUT LOAD C = 4.7μF ...
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... V is the 0.8 V reference voltage. REF C is the soft start capacitance from SS to GND the current sourced from SS (1.2 μA). SS When the ADP1706 is disabled (using EN), the soft start capacitor OUT is discharged to GND through an internal 100 Ω resistor. SENSE ADJ/ TRK/ SS SOFT START The ADP1707 and ADP1708 have no pins for soft start ...
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... Both divider ratios are set by postpackage trim, depending on the desired output voltage. ENABLE FEATURE The ADP1706/ADP1707/ADP1708 use the EN pin to enable and disable the OUT pin under normal operating conditions. As shown in Figure 31, when a rising voltage on EN crosses the active threshold, OUT turns on. When a falling voltage on EN crosses the inactive threshold, OUT turns off ...
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... An ADP1706 powers the I microproces- sor and an ADP1707 powers the core. At startup, the output of the ADP1706 ramps to 2.5 V, which is divided down via a voltage divider (R1 and R2 lower voltage at the TRK pin of the ADP1707. The output of the ADP1707 thus follows the TRK pin and ramps up steadily to 1 ...
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... THERMAL CONSIDERATIONS To guarantee reliable operation, the junction temperature of the ADP1706/ADP1707/ADP1708 must not exceed 125°C. To ensure that the junction temperature stays below this maximum value, the user needs to be aware of the parameters that contrib- ute to junction temperature changes. These parameters include ambient temperature, power dissipation in the power device, and thermal resistance between the junction and ambient air (θ ...
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... ADP1706/ADP1707/ADP1708 140 MAX T (DO NOT OPERATE ABOVE THIS POINT) J 120 100 1mA 100mA 500mA 10mA 300mA 750mA 0 0.5 1.0 1.5 2.0 2.5 3.0 V – V (V) IN OUT 2 Figure 37. 100 mm of PCB Copper, T 140 MAX T (DO NOT OPERATE ABOVE THIS POINT) J 120 100 1mA ...
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... Place the input capacitor as close as possible to the IN and GND pins. • Place the output capacitor as close as possible to the OUT and GND pins. • For the ADP1706, place the soft start capacitor as close as possible to the SS pin. • Connect the load as close as possible to the OUT and SENSE pins. ADP1706/ADP1707/ADP1708 ...
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... ADP1706/ADP1707/ADP1708 OUTLINE DIMENSIONS 4.00 (0.157) 3.90 (0.154) 3.80 (0.150) 1.75 (0.069) 1.35 (0.053) 0.10 (0.004) COPLANARITY 0.10 CONTROLLING DIMENSIONS ARE IN MILLIMETER; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 43. 8-Lead Standard Small Outline Package, with Expose Pad [SOIC_N_EP] ...
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... ADP1706ACPZ-0.85R7 –40°C to +125°C 1 ADP1706ACPZ-0.9-R7 –40°C to +125°C 1 ADP1706ACPZ-0.95R7 –40°C to +125°C 1 ADP1706ACPZ-1.0-R7 –40°C to +125°C ADP1706ACPZ-1.05R7 1 –40°C to +125°C 1 ADP1706ACPZ-1.1-R7 –40°C to +125°C 1 ADP1706ACPZ-1.15R7 –40°C to +125°C 1 ADP1706ACPZ-1.2-R7 –40°C to +125°C 1 ADP1706ACPZ-1 ...
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... ADP1707ACPZ-3.0-R7 –40°C to +125°C ADP1707ACPZ-3.3-R7 1 –40°C to +125°C 1 ADP1708ARDZ-R7 –40°C to +125°C ADP1708ACPZ-R7 1 –40°C to +125°C 1 ADP1706-3.3-EVALZ 1 ADP1707-3.3-EVALZ 1 ADP1708-EVALZ RoHS Compliant Part. Output Voltage (V) Package Description 0.75 8-Lead LFCSP_VD 0.8 8-Lead LFCSP_VD 0.85 8-Lead LFCSP_VD 0 ...
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... NOTES ADP1706/ADP1707/ADP1708 Rev Page ...
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... ADP1706/ADP1707/ADP1708 NOTES ©2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06640-0-6/07(0) Rev Page ...