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ADP171

Analog Devices
Part Number ADP171
Manufacturer Analog Devices
Description CMOS Linear Regulators
Published Oct 6, 2013
Detailed Description Data Sheet 300 mA, Low Quiescent Current, CMOS Linear Regulators ADP170/ADP171 FEATURES Maximum output current: 300 mA...
Datasheet PDF File ADP171 PDF File

ADP171
ADP171

Overview
Data Sheet 300 mA, Low Quiescent Current, CMOS Linear Regulators ADP170/ADP171 FEATURES Maximum output current: 300 mA Input voltage range: 1.
6 V to 3.
6 V Low quiescent current IGND = 23 µA with 0 mA load IGND = 170 µA with 300 mA load Low shutdown current: <1 µA Low dropout voltage: 66 mV at 300 mA load Output voltage accuracy: ±1% Up to 31 fixed-output voltage options available from 0.
8 V to 3.
0 V Adjustable-output voltage range 0.
8 V to 3.
0 V (ADP171) Accuracy over line, load, and temperature: ±3% Stable with small 1 µF ceramic output capacitor PSRR performance of 70 dB at 10 kHz and 73 dB at 1 kHz Low noise: 30 µV rms at VOUT = 0.
8 V Current limit and thermal overload protection Logic-controlled enable Compact 5-lead TSOT package APPLICATIONS Mobile phones Digital camera and audio devices Portable and battery-powered equipment DSP/FPGA/microprocessor supplies Post dc-dc regulation GENERAL DESCRIPTION The ADP170/ADP171 are low voltage input, low quiescent current, low-dropout (LDO) linear regulators that operate from 1.
6 V to 3.
6 V and provide up to 300 mA of output current.
The low 66 mV dropout voltage at 300 mA load improves efficiency and allows operation over a wide input voltage range.
The low 23 µA of quiescent current at a 0 mA load makes the ADP170/ ADP171 ideal for battery-operated portable equipment.
The ADP170 is capable of 31 fixed-output voltage options, ranging from 0.
8 V to 3.
0 V.
ADP171 is an adjustable version, which allows output voltages that range from 0.
8 V to 3.
0 V via an external divider.
The ADP170/ADP171 are optimized for stable operation with small 1 µF ceramic output capacitors.
Ideal for powering digital processors, the ADP170/ADP171 exhibit good transient TYPICAL APPLICATION CIRCUITS VIN C1 1 VIN VOUT 5 ADP170 C2 2 GND VOUT ON OFF 3 EN NC 4 07716-001 Figure 1.
ADP170 with Fixed Output Voltage, 1.
8 V VIN = 2.
3V CIN 1µF ON OFF 1 VIN VOUT 5 ADP171 2 GND 3 EN ADJ 4 VOUT = 1.
8V COUT 1µF R1 R2 Figure 2.
ADP171 with Adju...


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