MCP1703 LDO Voltage Regulator: Datasheet pdf, Pinout and Application

The MCP1703 is a 3 pin SOT-223 fixed output CMOS low dropout (LDO) voltage regulator. The input operating range is listed as 2.7V to 16V, making it an excellent choice for applications requiring two to six main cells, as well as 9V alkaline and one or two cell Li-Ion batteries. MCP1703 has a 0.4 percent output voltage tolerance at 25°C and a maximum of 3% over the -40°C to +125°C operational temperature range. At 25°C, line regulation is typically 0.1 percent. When only 1F output capacitance is used, the LDO output is stable. Electrolytic capacitors made of ceramic, tantalum, or aluminum can be utilized for input and output. For any application, the overcurrent limit and over-temperature shutdown give a reliable solution.

MCP1703 Symbol

MCP1703 Footprint

MCP1703 Block Diagram

Microchip Technology MCP1703-3302E/DB technical specifications, attributes, parameters and parts with similar specifications to Microchip Technology MCP1703-3302E/DB.

• 2.0 µA Typical Quiescent Current

• Input Operating Voltage Range: 2.7V to16.0V

• 250 mA Output Current for Output Voltages ≥ 2.5V

• 200 mA Output Current for Output Voltages < 2.5V

• Low Dropout Voltage, 625 mV typical @ 250 mA for VR = 2.8V

• 0.4% Typical Output Voltage Tolerance

• Standard Output Voltage Options:

- 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.0V, 5.0V

• Output Voltage Range: 1.2V to 5.5V in 0.1V

Increments (50 mV increments available upon request)

• Stable with 1.0 µF to 22 µF Ceramic Output Capacitance

• Short-Circuit Protection

• Over temperature Protection

• PDAs

• CO2 Detectors

• Battery-Powered Devices

• Battery-Powered Alarm Circuits

• Smoke Detectors

• Pagers and Cellular Phones

• Smart Battery Packs

• Low Quiescent Current Voltage Reference

• Digital Cameras

• Microcontroller Power

• Solar-Powered Instruments

• Consumer Products

• Battery-Powered Data Loggers

MCP1702, MCP1825, LM317

The MCP1703 can be used as a low quiescent current voltage reference as well as a regulator. The initial precision of the reference can be calibrated using production test equipment or a ratio measurement in many microcontroller applications. The thermal stability and line regulation tolerance are the only defects introduced by the MCP1703 LDO once the initial accuracy has been calibrated. When using the MCP1703 as a voltage reference, the low cost, low quiescent current, and compact ceramic output capacitor are all advantages.

MCP1703 as a voltage reference

The MCP1703 is most commonly used as a voltage regulator. Its low quiescent current and low dropout voltage make it ideal for many battery-powered applications.

MCP1703 Application Circuit

APPLICATION INPUT CONDITIONS

Package Type = SOT-23A

Input Voltage Range = 2.7V to 4.8V

VIN maximum = 4.8V

VOUT typical = 1.8V

IOUT = 50 mA maximum

MCP1703 Package Dimensions

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