MCP1801| Datasheet

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MCP1801
150 mA, High PSRR, Low Quiescent Current LDO
Features
150 mA Maximum Output Current Low Drop Out Voltage, 200 mV typical @ 100 mA 25 uA Typical Quiescent Current 0.01 uA Typical Shutdown Current Input Operating Voltage Range: 2.0V to 10.0V Standard Output Voltage Options: - 0.9V, 1.2V, 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

Description
The MCP1801 is a family of CMOS low dropout (LDO) voltage regulators that can deliver up to 150 mA of current while consuming only 25 uA 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 MCP1801 is capable of delivering 100 mA with only 200 mV (typical) of input to output voltage differential (VOUT = 3.3V). The output voltage tolerance of the MCP1801 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 uF of output capacitance. Ceramic, tantalum, or aluminum electrolytic capacitors can all be used for input and output. Overcurrent limit with current foldback provides short-circuit protection. A shutdown (SHDN) function allows the output to be enabled or disabled. When disabled, the MCP1801 draws only 0.01 uA of current (typical). The MC
P1801 is available in a SOT-23-5 package.

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

Package Types
SOT-23-5
VOUT 5 NC 4

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

1 VIN

2 VSS

3 SHDN

2008 Microchip Technology Inc.

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