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ADP667

Analog Devices
Part Number ADP667
Manufacturer Analog Devices
Description +5 V Fixed/ Adjustable Low-Dropout Linear Voltage Regulator
Published Mar 23, 2005
Detailed Description a +5 V Fixed, Adjustable Low-Dropout Linear Voltage Regulator FEATURES Low-Dropout: 150 mV @ 200 mA Low Power CMOS: 20...
Datasheet PDF File ADP667 PDF File

ADP667
ADP667

Overview
a +5 V Fixed, Adjustable Low-Dropout Linear Voltage Regulator FEATURES Low-Dropout: 150 mV @ 200 mA Low Power CMOS: 20 µA Quiescent Current Shutdown Mode: 0.
2 µA Quiescent Current 250 mA Output Current Pin Compatible with MAX667 Stable with 10 µF Load Capacitor Low Battery Detector Fixed +5 V or Adjustable Output +3.
5 V to +16.
5 V Input Range Dropout Detector Output APPLICATIONS Handheld Instruments Cellular Telephones Battery Operated Devices Portable Equipment Solar Powered Instruments High Efficiency Linear Power Supplies ADP667 FUNCTIONAL BLOCK DIAGRAM IN OUT ADP667 DD SHDN LBO LBI GND A1 C2 1.
255V REF SET C1 50mV GENERAL DESCRIPTION The ADP667 is a low-dropout precision voltage regulator that can supply up to 250 mA output current.
It can be used to give a fixed +5 V output with no additional external components or can be adjusted from +1.
3 V to +16 V using two external resistors.
Fixed or adjustable operation is automatically selected via the SET input.
The low quiescent current (20 µA) in conjunction with the standby or shutdown mode (0.
2 µA) makes this device especially suitable for battery powered systems.
The dropout voltage when supplying 100 µA is only 5 mV allowing operation with minimal headroom and prolonging the battery useful life.
At higher output current levels the dropout remains low increasing to just 150 mV when supplying 200 mA.
A wide input voltage range from 3.
5 V to 16.
5 V is allowable.
Additional features include a dropout detector and a low supply/ battery monitoring comparator.
The dropout detector can be used to signal loss of regulation, while the low battery detector can be used to monitor the input supply voltage.
The ADP667 is a pin-compatible replacement for the MAX667.
It is specified over the industrial temperature range –40°C to +85°C and is available in an 8-pin DIP and in narrow surface mount (SOIC) packages.
TYPICAL OPERATING CIRCUIT IN OUT +6V + INPUT ADP667 + C1 10µF +5V OUTPUT SET GND SHDN ORDERING GUI...


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