MCP1792 datasheet(1/32 Pages) MICROCHIP

Part #	MCP1792

Description	100 mA High-Voltage Automotive LDO

PDF	32 Pages

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Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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MCP1792/3

 2019-2020 Microchip Technology Inc.

DS20006229C-page 1

Features

• AEC-Q100 with Grade 0 and PPAP Capable

• Wide Input Voltage Range: 4.5V to 55V

- Up to 70V transient

- Under Voltage Lock Out (UVLO): 2.7V typical

• Extended Operating Temperature Range: -40°C

to +150°C

• Standard Output Regulated Voltages (VR): 3.3V

and 5.0V (Note 1)

- Tolerance

 2.0% typical

• Low Quiescent Supply Current: 25 µA typical

• Low Shutdown Quiescent Supply Current:



2 µA typical

• Output Current Capability: 100 mA typical

- Short Circuit Current Foldback Protection

- Thermal Shutdown Protection: 175°C

• Stable with Ceramic Output Capacitor: 2.2 µF

• High PSRR:

- 80 dB @ 100 Hz typical

- 55 dB @ 100 kHz typical

• Available in the following packages:

- 3-Lead SOT-223 (MCP1792)

- 3-Lead SOT-23A (MCP1792)

- 5-Lead SOT-223 (MCP1793)

- 5-Lead SOT-23 (MCP1793)

Applications

• Automotive Electronics

• Microcontroller Biasing

• High-Voltage Battery Packs for Power Tools,

ebikes, etc

• Smoke Detectors and other Alarm Sensors

Description

The MCP1792/3 family devices are high-voltage, low

dropout (LDO) regulators, capable of generating

100 mA output current. The input voltage range of 4.5V

to 55V makes it suitable in 12V to 48V power rails and

in high-voltage battery packs.

A low UVLO at shutdown of 2.4V makes it adequate for

cold cranking conditions in automotive applications.

The MCP1792/3 comes in two standard fixed output

voltage versions: 3.3V and 5.0V. The regulator output

is stable with 2.2 µF ceramic capacitors. The device is

protected from short-circuit events by the current

foldback function and from overheating by means of

thermal shutdown protection.

The MCP1792 is the 3-lead version of the MCP1792/3

device family and the MCP1793 is the 5-lead version,

which offers shutdown functionality (SHDN pin). While

in shutdown, the quiescent current drops to 2 µA,

allowing for lower, overall power consumption. The

device itself has a ground current of 100 µA typical,

while delivering maximum output current of 100 mA.

Note 1: For other voltage options, please contact

your local sales office.

Typical Application

Overvoltage Line Transient

100 mA High-Voltage Automotive LDO

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