# LR1803 700mA High Speed LDO Regulator

## Description
️· Fast low-dropout linear regulator operating from +1.7V to +6V input.
️· Suitable for low voltage microprocessor applications.
️· Output voltage options range from 1.5V to 5V with ±1.5% accuracy (±3.0% varying line/load).
️· Reverse current protection prevents battery current flow back to the regulator when a battery is connected to VOUT.

## Features
️· Maximum Output Current: 700mA DC
️· Low Power Consumption: 100μA
️· Dropout Voltage: 120mV @ IOUT = 300mA, VOUT = 3.0V
️· Output Voltage Accuracy: ±1.5%
️· Integrated Reverse Current Protection

## Ordering Information
️· LR1803G-xx-AB5-R: SOT-89-5 package, Tape Reel
️· LR1803G-xx-AF5-R: SOT-25 package, Tape Reel
- Note: 'xx' denotes Output Voltage (see Marking Information)

## Marking Information
️· SOT-25: 15 (1.5V), 18 (1.8V), 25 (2.5V), 28 (2.8V), 30 (3.0V), 33 (3.3V), 50 (5.0V)
️· SOT-89-5: Same voltage codes as SOT-25.

## Pin Configuration

Package	Pin #	Pin Name	Description
SOT-25	1	VIN	Power Input
	2	VSS	Ground
	3	CE	ON/OFF Control
	4	NC	No Connection
	5	VOUT	Output
SOT-89-5	1	CE	ON/OFF Control
	2	VSS	Ground
	3	NC	No Connection
	4	VIN	Power Input
	5	VOUT	Output

## Absolute Maximum Ratings
️· Input Voltage (VIN): 6.5V
️· Output Voltage (VOUT): 6.5V
️· CE Input Voltage (VCE): 6.5V
️· Power Dissipation (SOT-25): 250mW
️· Power Dissipation (SOT-89-5): 500mW
️· Operating Temperature: -40°C to +85°C
️· Storage Temperature: -55°C to +125°C

## Electrical Characteristics (TA = 25°C)
️· Output Voltage: ×0.985 to ×1.015 V
️· Output Current (IOUTMAX): 700mA
️· Load Regulation: -20 to 20mV
️· Dropout Voltage: 120mV to 300mV (at 300mA)
️· Supply Current: 100-200μA
️· Standby Current: 0.3-1.5μA
️· Line Regulation: 0.01% to 0.1%/V
️· Reverse Current: 0.3μA

## Test Circuit Notes
️· CIN: 2.2μF or higher
️· CL: 2.2μF (VOUT = 2.5-5.0V), 4.7μF (VOUT = 2.1-2.45V), 6.8μF (VOUT = 0.8-2.05V)