ADP123 Analog Devices, ADP123 Datasheet
ADP123
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ADP123 Summary of contents
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... The low 170 μA of quiescent current at full load makes the ADP122 ideal for battery-operated portable equipment. The ADP122 is capable of 31 fixed output voltages from 1. 3.3 V. The ADP123 is the adjustable version of the device and allows the output voltage to be set between 0.8 V and 5 external voltage divider. ...
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... ADP122/ADP123 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Typical Application Circuits ............................................................ 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Recommended Specifications ..................................................... 4 Absolute Maximum Ratings ............................................................ 5 Thermal Data ................................................................................ 5 Thermal Resistance ...................................................................... 5 ESD Caution .................................................................................. 5 Pin Configurations and Function Descriptions ........................... 6 Typical Performance Characteristics ............................................. 7 REVISION HISTORY 6/11—Rev Rev. A Added 6-Lead LFCSP Package ..................................... Throughout Added Figure 3 and Figure 4 (Renumbered Sequentially) ...
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... EN = VIN or GND I-LEAKAGE EN = VIN or GND −40°C to +125° −40°C to +125°C RISE −40°C to +125°C FALL 25°C HYS A Rev Page ADP122/ADP123 = 10 mA; C OUT Min Typ 2 130 170 0.1 − 5.5 V, −2 OUT 0.495 0.500 = 2 5.5 V, ...
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... OUT 1 The current from the external resistor divider network in the case of adjustable voltage output (as with the ADP123) should be subtracted from the ground current measured. 2 Accuracy when VOUT is connected directly to ADJ. When VOUT voltage is set by external feedback resistors, absolute accuracy in adjust mode depends on the tolerances of the resistors used ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL DATA Absolute maximum ratings apply individually only, not in combination. The ADP122/ADP123 can be damaged when the junction temperature limits are exceeded. Monitoring ambient temperature does not guarantee that T J specified temperature limits ...
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... Exposed Pad. The exposed pad must be connected to ground. Rev Page VIN VOUT 1 5 ADP123 GND 2 TOP VIEW (Not to Scale) EN ADJ 3 4 Figure 7. ADP123 TSOT Adjustable Output Pin Configuration ADP123 TOP VIEW (Not to Scale VOUT VIN 2 5 ADJ GND ...
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... V (V) IN Figure 11. Output Voltage vs. Input Voltage = 1.0 µ 1.0 µ 25°C, unless otherwise noted. IN OUT A 85 125 100 1000 4.8 5.0 5.2 5.4 Rev Page ADP122/ADP123 250 200 I = 300mA OUT 150 I = 200mA OUT I = 100mA OUT 100 I = 10mA OUT 100µA OUT I = 1mA OUT 0 –40 – ...
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... ADP122/ADP123 0.50 0. 3. 4. 5.4V 0. 5.5V IN 0.20 0.15 0.10 –50 – TEMPERATURE (°C) Figure 15. Shutdown Current vs. Temperature at Various Input Voltages (mA) OUT Figure 16. Dropout Voltage vs. Load Current 450 400 350 300 250 200 150 I = 10mA ...
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... FREQUENCY (Hz) Figure 23. Power Supply Rejection Ratio vs. Headroom Voltage (V 100k 1M 10M = 4 4.7 V OUT IN 100k 1M 10M 100k 1M 10M − OUT Rev Page ADP122/ADP123 4.2V OUT 3.3V OUT 2.8V OUT 0 10 100 1k 10k FREQUENCY (Hz) Figure 24. Output Noise Spectrum ...
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... ADP122/ADP123 I OUT 1mA TO 300mA LOAD STEP OUT 200mA Ω CH1 B CH2 20.0mV B M 40.0µs A CH1 Figure 27. Load Transient Response 4.5V VOLTAGE STEP 2 V OUT 1 1.00V Ω CH1 B CH2 2.00mV B M 10.0µs A CH3 Figure 28. Line Transient Response, Load Current = ...
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... PMOS device is pulled higher, allowing less current to pass and decreasing the output voltage. The adjustable ADP123 has an output voltage range of 0 5.0 V. The output voltage is set by the ratio of two external resistors, as shown in Figure 2. The device servos the output to maintain the voltage at the ADJ pin at 0 ...
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... Input and Output Capacitor Properties Any good quality ceramic capacitors can be used with the ADP122/ ADP123, as long as the capacitor meets the minimum capacitance and maximum ESR requirements. Ceramic capacitors are manu- factured with a variety of dielectrics, each with different behavior over temperature and applied voltage ...
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... ADP122/ADP123 inputs and the output behave in a predictable manner during power-up. ENABLE FEATURE The ADP122/ADP123 uses the EN pin to enable and disable the VOUT pin under normal operating conditions. As shown in Figure 35, when a rising voltage on EN crosses the active threshold, VOUT turns on. Conversely, when a falling voltage on EN crosses the inactive threshold, VOUT turns off ...
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... Consider the case where a hard short from VOUT to GND occurs. At first, the ADP122/ADP123 limit the current so that only 500 mA is conducted into the short. If self-heating causes the junction temperature to rise above 150°C, thermal shutdown activates, turning off the output and reducing the output current to zero. When the junction temperature cools to less than 135° ...
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... I = 300mA LOAD = 150mA I = 100mA LOAD I = 25mA LOAD = 10mA 2.5 3.0 = 25° 300mA LOAD I = 100mA LOAD I = 25mA LOAD I = 10mA LOAD 2.5 3.0 = 25°C A Rev Page ADP122/ADP123 140 T MAX J 120 I = 300mA LOAD 100 80 I LOAD 60 I LOAD I 40 LOAD 10mA I = 1mA LOAD LOAD 0 0.5 1.0 1.5 2.0 V – V ...
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... ADP122/ADP123 140 T MAX J 120 I = 300mA LOAD I = 150mA 100 LOAD 25mA LOAD 1mA LOAD 20 0 0.5 1.0 1.5 2.0 V – V (V) OUT IN Figure 42. Junction Temperature vs. Power Dissipation, 2 100 mm of PCB Copper, T 140 T MAX J 120 I = 300mA LOAD I = 150mA LOAD 100 1mA LOAD 20 0 0.5 1.0 1.5 2.0 V – ...
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... V (V) OUT IN Figure 46. Junction Temperature vs. Power Dissipation, 2 100 mm of PCB Copper, T 300mA 150mA 100mA 25mA 10mA 2.5 3.0 = 25°C A 100mA 25mA 10mA 2.5 3.0 = 25°C A Rev Page ADP122/ADP123 140 T MAX J 120 300mA 100 80 100mA 60 25mA 40 1mA 20 0 0.5 1.0 1.5 2.0 V – V (V) OUT IN Figure 47. Junction Temperature vs. Power Dissipation, ...
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... ADP122/ADP123 140 T MAX J 120 300mA 150mA 100 1mA 0 0.5 1.0 1.5 2.0 V – V (V) OUT IN Figure 49. Junction Temperature vs. Power Dissipation PCB Copper 140 T MAX J 120 150mA 300mA 100 100mA 1mA 20 0 0.5 1.0 1.5 2.0 V – V (V) OUT IN Figure 50. Junction Temperature vs. Power Dissipation, ...
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... 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 ADP122/ADP123. However, as shown in 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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... ADP122/ADP123 OUTLINE DIMENSIONS 1.60 BSC * 0.90 MAX 0.70 MIN 0.10 MAX PIN 1 INDEX AREA 0.60 0.55 0.50 SEATING PLANE 2.90 BSC 5 4 2.80 BSC 0.95 BSC 1.90 BSC * 1.00 MAX 0.20 0.08 0.50 SEATING PLANE 0.30 * COMPLIANT TO JEDEC STANDARDS MO-193-AB WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 54. 5-Lead Thin Small Outline Transistor Package [TSOT] (UJ-5) Dimensions shown in millimeters 1 ...
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... LFCSP_UD 2.5 6-Lead LFCSP_UD 2.6 6-Lead LFCSP_UD 2.8 6-Lead LFCSP_UD 3.0 6-Lead LFCSP_UD 3.3 6-Lead LFCSP_UD 0.8 to 5.0 (Adjustable) 5-Lead TSOT 0.8 to 5.0 (Adjustable) 6-Lead LFCSP_UD 3.3 Evaluation Board Adjustable Evaluation Board REDYKIT 2.5,3.3 REDYKIT Rev Page ADP122/ADP123 Package Option Branding UJ-5 LE6 UJ-5 LE9 UJ-5 LEA UJ-5 LEC UJ-5 LED UJ-5 LEE UJ-5 LEF CP-6-3 LJS CP-6-3 LJT CP-6-3 ...
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... ADP122/ADP123 NOTES Rev Page ...
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... NOTES Rev Page ADP122/ADP123 ...
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... ADP122/ADP123 NOTES ©2009–2011 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D08399-0-6/11(A) Rev Page ...