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MCP1802

Microchip Technology
Part Number MCP1802
Manufacturer Microchip Technology
Description Low Quiescent Current LDO
Published Oct 9, 2007
Detailed Description MCP1802 300 mA, High PSRR, Low Quiescent Current LDO Features: • 300 mA Maximum Output Current • Low Dropout Voltage, ...
Datasheet PDF File MCP1802 PDF File

MCP1802
MCP1802

Overview
MCP1802 300 mA, High PSRR, Low Quiescent Current LDO Features: • 300 mA Maximum Output Current • Low Dropout Voltage, 200 mV typical @ 100 mA • 25 µA Typical Quiescent Current • 0.
01 µA Typical Shutdown Current • Input Operating Voltage Range: 2.
0V to10.
0V • Standard Output Voltage Options: - (0.
9V, 1.
8V, 2.
5V, 3.
0V, 3.
3V, 5.
0V, 6.
0V) • Output voltage accuracy: - ±2% (VR > 1.
5V), ±30 mV (VR  1.
5V) • Stable with Ceramic output capacitors • Current Limit Protection • Shutdown pin • High PSRR: 70 dB typical @ 10 kHz Applications: • Battery-powered Devices • Battery-powered Alarm Circuits • Smoke Detectors • CO2 Detectors • Pagers and Cellular Phones • Wireless Communications Equipment • Smart Battery Packs • Low Quiescent Current Voltage Reference • PDAs • Digital Cameras • Microcontroller Power • Solar-Powered Instruments • Consumer Products • Battery Powered Data Loggers Related Literature: • AN765, “Using Microchip’s Micropower LDOs”, DS00765, Microchip Technology Inc.
, 2002 • AN766, “Pin-Compatible CMOS Upgrades to BiPolar LDOs”, DS00766, Microchip Technology Inc.
, 2002 • AN792, “A Method to Determine How Much Power a SOT23 Can Dissipate in an Application”, DS00792, Microchip Technology Inc.
, 2001 Description: The MCP1802 is a family of CMOS low dropout (LDO) voltage regulators that can deliver up to 300 mA of current while consuming only 25 µA of quiescent current (typical).
The input operating range is specified from 2.
0V to 10.
0V, making it an ideal choice for two to six primary cell battery-powered applications, 9V alkaline and one or two cell Li-Ion-powered applications.
The MCP1802 is capable of delivering 100 mA with only 200 mV (typical) of input to output voltage differential (VOUT = 3.
0V).
The output voltage tolerance of the MCP1802 at +25°C is typically ±0.
4% with a maximum of ±2%.
Line regulation is ±0.
01% typical at +25°C.
The LDO output is stable with a minimum of 1 µF of output capacitance.
Ceramic, tantalum or aluminum electrolytic capacitors ca...


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