MIC5271YM5-TR 查看數據表（PDF） - Microchip Technology

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MIC5271YM5-TR

µCap Negative Low Dropout Regulator

Microchip Technology 

MIC5271

µCap Negative Low Dropout Regulator

Features

• Stable with Ceramic or Tantalum Capacitors

• Standard Fixed Output Voltage Options: 3.0V and

5.0V

• Adjustable Output Voltage Option: (–1.2V to

–14V)

• Positive and Negative Enable Thresholds

• Low Dropout Voltage: –500 mV @ –100 mA

• Low Ground Current: –25 µA @ Load = –100 µA

• Tight Initial Accuracy: ±2%

• Tight Load and Line Regulation

• Thermal Shutdown and Current-Limit Protection

• IttyBitty 5-Pin SOT23 Packaging

• Zero-Current Off Mode

Applications

• GaAsFET Bias

• Portable Cameras and Video Recorders

• PDAs

• Battery-Powered Equipment

• Post-Regulation of DC/DC Converters

General Description

The MIC5271 is a µCap 100 mA negative regulator in

a SOT23-5 package. With better than 2% initial

accuracy, this regulator provides a very accurate

supply voltage for applications that require a negative

rail. The MIC5271 sinks 100 mA of output current at

very low dropout voltage (500 mV typical, 700 mV

maximum at 100 mA of output current).

The µCap regulator design is optimized to work with

low-value, low-cost ceramic capacitors. The output

typically requires only a 1 µF capacitance for stability.

Designed for applications where small packaging and

efficiency are critical, the MIC5271 combines LDO

design expertise with IttyBitty packaging to improve

performance and reduce power dissipation. Ground

current is optimized to help improve battery life in

portable applications. The MIC5271 also includes a

TTL-compatible enable pin, allowing the user to put the

part into a zero-current off mode, in which the ground

current is only ±1 µA, typical.

The MIC5271 is available in the 5-pin SOT23 package

for space saving applications and it is available with an

adjustable output.

Package Types

MIC5271YM5

5-Lead SOT23 (M5)

Adjustable Output Voltage

(Top View)

ADJ GND EN

321

L9AA

4

5

–OUT

–IN

* 5.0V pinout shown. 3.0V version is identical.

Please see pin descriptions in Table 3-1.

MIC5271-5.0YM5 *

5-Lead SOT23 (M5)

Fixed Output Voltage

(Top View)

NC GND EN

321

L950

4

5

–OUT

–IN

 2017 Microchip Technology Inc.

DS20005881A-page 1

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