MCP1700T-3302E/TT Integrated Circuit Chip Low Quiescent Current LDO

MCP1700 Low Quiescent Current LDO

Features

• 1.6 µA Typical Quiescent Current

• Input Operating Voltage Range: 2.3V to 6.0V

• Output Voltage Range: 1.2V to 5.0V

• 250 mA Output Current for output voltages ≥ 2.5V

• 200 mA Output Current for output voltages < 2.5V

• Low Dropout (LDO) voltage

- 178 mV typical @ 250 mA for V_OUT = 2.8V

• 0.4% Typical Output Voltage Tolerance

• Standard Output Voltage Options:

- 1.2V, 1.8V, 2.5V, 3.0V, 3.3V, 5.0V

• Stable with 1.0 µF Ceramic Output capacitor

• Short Circuit Protection

• Overtemperature Protection

Applications

• Battery-powered Devices

• Battery-powered Alarm Circuits

• Smoke Detectors

• CO² Detectors

• Pagers and Cellular Phones

• Smart Battery Packs

• Low Quiescent Current Voltage Reference

• PDAs

• Digital Cameras

• Microcontroller Power

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

General Description

The MCP1700 is a family of CMOS low dropout (LDO) voltage regulators that can deliver up to 250 mA of current while consuming only 1.6 µA of quiescent current (typical). The input operating range is specified from 2.3V to 6.0V, making it an ideal choice for two and three primary cell battery-powered applications, as well as single cell Li-Ion-powered applications.

The MCP1700 is capable of delivering 250 mA with only 178 mV of input to output voltage differential (V_OUT = 2.8V). The output voltage tolerance of the MCP1700 is typically ±0.4% at +25°C and ±3% maximum over the operating junction temperature range of -40°C to +125°C.

Output voltages available for the MCP1700 range from 1.2V to 5.0V. The LDO output is stable when using only 1 µF output capacitance. Ceramic, tantalum or aluminum electrolytic capacitors can all be used for input and output. Overcurrent limit and overtemperature shutdown provide a robust solution for any application. Package options include the SOT-23, SOT-89 and TO-92.

Package Types

Absolute Maximum Ratings †

V_DD................................................................................+6.5V

All inputs and outputs w.r.t. .............(V_SS-0.3V) to (V_IN+0.3V)

Peak Output Current ....................................Internally Limited

Storage temperature .....................................-65°C to +150°C

Maximum Junction Temperature................................... 150°C

Operating Junction Temperature...................-40°C to +125°C

ESD protection on all pins (HBM;MM)............... ≥ 4 kV; ≥ 400V

† Notice: Stresses above those listed under “Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Functional Block Diagrams

Typical Application Circuits

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