ADP1707 Analog Devices, ADP1707 Datasheet
ADP1707
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ADP1707 Summary of contents
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... Figure 3. ADP1708 with Adjustable Output Voltage, 0 5.0 V ADP1707 and ADP1708 contain internal soft start capacitors that give a typical start-up time of 100 μs. The ADP1707 includes a tracking feature that allows the output to follow an external voltage rail or reference. The ADP1706/ADP1707/ADP1708 are available in an 8-lead, exposed paddle SOIC package and an 8-lead × ...
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... 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............................................................ 13 PCB Layout Considerations ...
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... V) or 2.5 V (whichever is greater OUT Table 1. Parameter INPUT VOLTAGE RANGE OPERATING SUPPLY CURRENT SHUTDOWN CURRENT OUTPUT VOLTAGE ACCURACY Fixed Output Voltage Accuracy (ADP1706 and ADP1707) Adjustable Output Voltage Accuracy 1 (ADP1708) LINE REGULATION 2 LOAD REGULATION 3 DROPOUT VOLTAGE 4 START-UP TIME ADP1707 and 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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... 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 PIN ADJ INDICATOR GND 2 7 SENSE ADP1708 OUT TOP VIEW (Not to Scale OUT ...
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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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... Figure 25. ADP1708 Power Supply Rejection Ratio vs. Input Voltage –35 V RIPPLE LOAD C OUT FREQUENCY = 10kHz –40 –45 –50 –55 1M 10M 0.8 Figure 26. ADP1708 Power Supply Rejection Ratio vs. Output Voltage 1M 10M Rev Page ADP1706/ADP1707/ADP1708 V = 50mV RIPPLE I = 10mA LOAD C = 4.7μF OUT FREQUENCY = 10kHz V = 2.4V OUT V = 1.6V OUT V = 0.8V OUT 3.2 3.7 4 ...
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... TRK/ SS SOFT START The ADP1707 and ADP1708 have no pins for soft start; therefore, the function is switched to an internal soft start capacitor, which sets the soft start ramp-up period to approxi- mately 48 μs. Note that the ramp-up period is the time it takes OUT to go from 0% to 90% of the nominal value and is ...
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... R2. TRACK MODE (ADP1707) The ADP1707 includes a tracking mode feature. As shown in Figure 30, if the voltage applied at the TRK pin is less than the nominal output voltage, OUT is equal to the voltage at TRK. ...
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... OUT Figure 35 shows an application where the ADP1707 tracking feature is used. 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 ...
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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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... PCB LAYOUT CONSIDERATIONS Heat dissipation from the package can be improved by increasing the amount of copper attached to the pins of the ADP1706/ADP1707/ADP1708. However, as can be seen from Table 5, a point of diminishing returns is eventually reached, beyond which an increase in the copper size does not yield significant heat dissipation benefits. ...
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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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... ADP1707ARDZ-1.2-R7 –40°C to +125°C 1 ADP1707ARDZ-1.3-R7 –40°C to +125°C 1 ADP1707ARDZ-1.5-R7 –40°C to +125°C 1 ADP1707ARDZ-1.8-R7 –40°C to +125°C 1 ADP1707ARDZ-2.5-R7 –40°C to +125°C ADP1707ARDZ-3.0-R7 1 –40°C to +125°C 1 ADP1707ARDZ-3.3-R7 –40°C to +125°C Output Voltage (V) Package Description 0 ...
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... ADP1707ACPZ-1.15R7 –40°C to +125°C 1 ADP1707ACPZ-1.2-R7 –40°C to +125°C 1 ADP1707ACPZ-1.3-R7 –40°C to +125°C 1 ADP1707ACPZ-1.5-R7 –40°C to +125°C 1 ADP1707ACPZ-1.8-R7 –40°C to +125°C ADP1707ACPZ-2.5-R7 1 –40°C to +125°C 1 ADP1707ACPZ-3.0-R7 –40°C to +125°C ADP1707ACPZ-3.3-R7 1 – ...
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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 ...