ADP320 Analog Devices, ADP320 Datasheet
ADP320
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ADP320 Summary of contents
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... The low quiescent current, low dropout voltage, and wide input voltage range of the ADP320 triple LDO extend the battery life of portable devices. The ADP320 triple LDO maintains power supply rejection greater than 60 dB for frequencies as high as 100 kHz while operating with a low headroom voltage ...
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... ADP320 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Typical Application Circuits ............................................................ 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Input and Output Capacitor, Recommended Specifications .. 4 Absolute Maximum Ratings ............................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 REVISION HISTORY 4/11—Rev Rev. A Changes to Ordering Guide .......................................................... 20 6/10—Revision 0: Initial Version Typical Performance Characteristics ...
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... J 2.0 180 = 3 OUT = 2 OUT = 2 OUT = 1 OUT ADP320 = 10 mA, OUT3 Max Unit 5.5 V 5.5 V µA 160 µA µA 220 µA µA 380 µA µA 140 µA µA 2.5 µ ...
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... ADP320 Parameter Symbol POWER SUPPLY REJECTION RATIO PSRR 1 Based on an end-point calculation using 1 mA and 200 mA loads. 2 Dropout voltage is defined as the input-to-output voltage differential when the input voltage is set to the nominal output voltage. This applies only for output voltages above 1.8 V. ...
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... THERMAL DATA Absolute maximum ratings apply individually only, not in combination. The ADP320 triple LDO can be damaged when the junction temperature limits are exceeded. Monitoring ambient temper- ature does not guarantee that the junction temperature (T is within the specified temperature limits. In applications with high power dissipation and poor thermal resistance the maximum ambient temperature may have to be derated ...
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... Enable Input for Regulator 2. Drive EN1 high to turn on Regulator 2; drive it low to turn off Regulator 2. For automatic startup, connect EN2 to VBIAS Exposed pad for enhanced thermal performance. Connect to copper ground plane. EN1 1 12 GND VBIAS 2 11 GND ADP320 10 VIN3 VIN1/VIN2 VIN3 VIN1/VIN2 TOP VIEW (Not to Scale) NOTES CONNECT. ...
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... I (mA) LOAD Figure 7. Output Voltage vs. Load Current 1.820 LOAD = 1mA LOAD = 5mA LOAD = 10mA LOAD = 50mA LOAD = 100mA 1.815 LOAD = 200mA 1.810 1.805 1.800 2.1 2.5 2.9 3.3 3.7 4.1 4.5 V (V) IN Figure 8. Output Voltage vs. Input Voltage ADP320 = 25°C, A 125 1000 4.9 5.3 ...
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... ADP320 1.520 LOAD = 1mA LOAD = 5mA 1.515 LOAD = 10mA LOAD = 50mA LOAD = 100mA 1.510 LOAD = 200mA 1.505 1.500 1.495 1.490 1.485 1.480 –40 – (°C) J Figure 9. Output Voltage vs. Junction Temperature 1.510 1.508 1.506 1.504 1.502 1.500 (mA) LOAD Figure 10. Output Voltage vs. Load Current 1 ...
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... Figure 20. Bias Current vs. Input Voltage, Single Output Load Rev Page LOAD = 1mA LOAD = 5mA LOAD = 10mA LOAD = 50mA LOAD = 100mA LOAD = 200mA 0 –40 – (° 100 I (mA) LOAD LOAD = 1mA LOAD = 5mA LOAD = 10mA LOAD = 50mA LOAD = 100mA LOAD = 200mA 2.5 2.9 3.3 3.7 4.1 4.5 4.9 V (V) IN ADP320 125 1000 5.3 ...
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... ADP320 0.9 3.6 3.8 0.8 4.2 4.4 4.8 0.7 5.5 0.6 0.5 0.4 0.3 0.2 0.1 0 –50 – TEMPERATURE (°C) Figure 21. Shutdown Current vs. Temperature at Various Input Voltages 100 LOAD (mA) Figure 22. Dropout Voltage vs. Load Current and Output Voltage 3.3 V OUT1 3.35 LOAD = 1mA LOAD = 5mA LOAD = 10mA 3.30 LOAD = 50mA LOAD = 100mA LOAD = 200mA 3 ...
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... OUT C = 1µF OUT 100 1k 10k 100k 1M FREQUENCY (Hz) 1.8V/200mA V RIPPLE 1.8V/100mA 1V HEADROOM 1.8V/10mA 1.8V PSRR 1.2V/200mA 1.2 XTALK 1.2V/100mA 1.2V/10mA 100 1k 10k 100k 1M FREQUENCY (Hz) Channel to Channel Crosstalk 100 1k 10k FREQUENCY (Hz LOAD ADP320 200mA 100mA 10mA 1mA 10M = 50mV 10M 3.3V 1.8V 1.5V 100k = 10 mA ...
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... ADP320 70 3.3V 1.8V 1. 0.001 0.01 0.1 1 LOAD CURRENT (mA) Figure 33. Output Noise vs. Load Current and Output Voltage LOAD1 OUT1 V OUT2 OUT3 Ω B CH1 100mA CH2 50mV M40µ CH3 10mV CH4 10mV W W Figure 34. Load Transient Response, ...
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... I =1 mA, IN LOAD1 LOAD2 LOAD3 CH1 = V , CH2 = V , CH3 = V , CH4 = V IN OUT1 OUT2 CH1 1V 4.58V CH3 500mV CH1 = V OUT3 Rev Page ADP320 EN V OUT1 V OUT2 V OUT3 CH2 500mV B M100µs A CH1 540mV CH4 500mV W T 10.2% W Figure 40. Turn On Response, ...
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... PMOS device is pulled higher, allowing less current to VOUT1 flow and decreasing the output voltage. The ADP320 triple LDO is available in multiple output voltage options ranging from 0 3.3 V. The ADP320 triple LDO 0.5V uses the EN1, EN2, and EN3 enable pins to enable and disable REF ...
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... If an output capacitance greater than 1 µF is required, the input capacitor should be increased to match it. Input and Output Capacitor Properties Any good quality ceramic capacitor may be used with the ADP320 triple LDO, as long as the capacitor meets the minimum capacit- ance and maximum ESR requirements. Ceramic capacitors are manufactured with a variety of dielectrics, each with a different behavior over temperature and applied voltage ...
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... The ADP320 triple LDO has an internal undervoltage lockout circuit that disables all inputs and the output when the input voltage bias, VBIAS, is less than approximately 2.2 V. This ensures that the inputs of the ADP320 triple LDO and the output behave in a predictable manner during power-up. ENABLE FEATURE The ADP320 triple LDO uses the ENx pins to enable and disable the VOUTx pins under normal operating conditions ...
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... Consider the case where a hard short from VOUTx to GND occurs. At first, the ADP320 triple LDO current limits, so that only 300 mA is conducted into the short. If self-heating of the junction is great enough to cause its temperature to rise above 155° ...
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... ADP320 140 120 100 0.2 0.4 0.6 TOTAL POWER DISSIPATION (W) Figure 47. Junction Temperature vs. Total Power Dissipation, T 140 120 100 0.2 0.4 0.6 TOTAL POWER DISSIPATION (W) Figure 48. Junction Temperature vs. Total Power Dissipation 1000mm 2 500mm 2 100mm 2 50mm JEDEC T MAX J 0.8 1.0 1.2 = 25°C Figure 49. Junction Temperature vs. Total Power Dissipation, T ...
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... CONSIDERATIONS Heat dissipation from the package can be improved by increasing the amount of copper attached to the pins of the ADP320 triple LDO. However, as can be seen from Table 6, a point of diminishing returns eventually is reached, beyond which an increase in the copper size does not yield significant heat dissipation benefits. ...
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... Model Temperature Range ADP320ACPZ331815R7 −40°C to +125°C −40°C to +125°C ADP320ACPZ-110- RoHS Compliant Part. 2 For additional voltage options, contact a local sales or distribution representative. ©2010–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. ...