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LT3009

Part Number	LT3009
Manufacturer	Linear Technology
Description	20mA Low Dropout Linear Regulators
Published	Jul 14, 2009
Detailed Description	www.DataSheet4U.com LT3009 Series 3µA IQ, 20mA Low Dropout Linear Regulators DESCRIPTION The LT®3009 Series are micropo...
Datasheet	LT3009 PDF File

Overview

www.
DataSheet4U.
com LT3009 Series 3µA IQ, 20mA Low Dropout Linear Regulators DESCRIPTION The LT®3009 Series are micropower, low dropout voltage (LDO) linear regulators.
The devices supply 20mA output current with a dropout voltage of 280mV.
No-load quiescent current is 3μA.
Ground pin current remains at less than 5% of output current as load increases.
In shutdown, quiescent current is less than 1μA.
The LT3009 regulators optimize stability and transient response with low ESR ceramic capacitors, requiring a minimum of only 1μF .
The regulators do not require the addition of ESR as is common with other regulators.
Internal protection circuitry includes current limiting, thermal limiting, reverse-battery protection and reversecurrent protection.
The LT3009 Series are ideal for applications that require moderate output drive capability coupled with ultralow standby power consumption.
The device is available in ﬁxed output voltages of 1.
2V, 1.
5V, 1.
8V, 2.
5V, 3.
3V and 5V, and as an adjustable device with an output voltage range down to the 600mV reference.
The LT3009 is available in the 6-lead DFN and 8-lead SC70 packages.
L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
FEATURES n n n n n n n n n n n n n Ultralow Quiescent Current: 3μA Input Voltage Range: 1.
6V to 20V Output Current: 20mA Dropout Voltage: 280mV Adjustable Output (VADJ = VOUT(MIN) = 600mV) Fixed Output Voltages: 1.
2V, 1.
5V, 1.
8V, 2.
5V, 3.
3V, 5V Output Tolerance: ±2% Over Load, Line and Temperature Stable with Low ESR, Ceramic Output Capacitors (1μF minimum) Shutdown Current: <1μA Current Limit Protection Reverse-Battery Protection Thermal Limit Protection 8-Lead SC70 and 2mm × 2mm DFN Packages APPLICATIONS n n n Low Current Battery-Powered Systems Keep-Alive Power Supplies Remote Monitoring Utility Meters Hotel Door Locks TYPICAL APPLICATION 3.
3V, 20mA Supply with Shutdown 500 IN 1μF LT3009-3.
3 SHDN GND ...

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