Microchip MIC5377 Bedienungsanleitung

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 2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006080B-page 1

MIC5376/7/8

Features

• 4-Lead 1 mm x 1 mm UDFN: MIC5376

• 8-Lead 1.2 mm x 1.2 mm Thin QFN: MIC5377/8

• Low-Cost 5-Lead SC-70 Package Available

• Low Dropout Voltage: 120 mV at 150 mA

• Input Voltage Range: 2.5V to 5.5V

• 150 mA Guaranteed Output Current

• Stable with 0402 Ceramic Capacitors as Low as

1 µF

• Low Quiescent Current: 29 µA

• Excellent Load/Line Transient Response

• Fixed Output Voltages: MIC5376

• Adjustable Output Voltages: MIC5377/8

• Output Discharge Circuit: MIC5376/8

• High Output Accuracy

- ±2% Initial Accuracy

• Thermal Shutdown and Current Limit Protection

Applications

• Mobile Phones

• Digital Cameras

• GPS, PDAs, PMP, Handhelds

• Portable Electronics

General Description

The MIC5376, MIC5377, and MIC5378 are advanced,

general purpose linear regulators that offer low dropout

in ultra-small packages. The MIC5376 provides a fixed

output voltage in a 1 mm x 1 mm UDFN package while

the MIC5377 and MIC5378 provide adjustable output

voltages in a 1.2 mm x 1.2 mm Thin QFN package.

When the MIC5376 or MIC5378 are disabled, an

internal resistive load is automatically applied to the

output to discharge the output capacitor. The

MIC5376/7/8 are capable of sourcing 150 mA output

current with low dropout, making it an ideal solution for

any portable electronic application.

Ideal for battery-powered applications, the

MIC5376/7/8 offer 2% initial accuracy, low dropout

voltage (120 mV at 150 mA), and ground current

(typically 29 µA). The MIC5376/7/8 can also be put into

a zero-off-mode current state, drawing virtually no

current when disabled.

The MIC5376 is available in lead-free (RoHS

compliant) 1 mm x 1 mm UDFN and SC-70-5

packages. The MIC5377/8 are available in lead-free

(RoHS compliant) 1.2 mm x 1.2 mm Thin QFN and

SC-70-5 packages.

The MIC5376/7/8 have an operating junction

temperature range of –40°C to 125°C.

Typical Application Circuit

VIN VOUT

VBAT

GND

MIC5376-xxYMT

EN1μF 1μF

OUT

= 2.8V

High Performance Low Dropout 150 mA LDO

MIC5376/7/8

DS20006080B-page 2 2018 - 2022 Microchip Technology Inc. and its subsidiaries

Package Types

Functional Block Diagram

VOUT GND

ENVIN

MIC5376 (Fixed Output)

4-Lead 1 mm x 1 mm UDFN (MT)

(Top View)

MIC5377/8 (Adjustable Output)

8-Lead 1.2 mm x 1.2 mm TQFN (MT)

(Top View)

MIC5376 (Fixed Output)

5-Lead SC-70 (C5)

(Top View)

MIC5377/8 (Adjustable Output)

5-Lead SC-70 (C5)

(Top View)

EN GND

NC VOUT

VIN

EN GND

ADJ VOUT

VIN

3 1

VIN

VOUT GND

GND

ADJ

Reference

LDO VOUT

GND

VIN

Auto

Discharge

MIC5376 Block Diagram

Reference

LDO VOUT

ADJ

*MIC5378 Only

GND

VIN

Auto

Discharge*

MIC5377/8 Block Diagram

 2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006080B-page 3

MIC5376/7/8

1.0 ELECTRICAL CHARACTERISTICS

Absolute Maximum Ratings †

Supply Voltage (VIN) ......................................................................................................................................... 0V to +6V

Enable Voltage (V

EN) ..........................................................................................................................................0V to V

Power Dissipation (PD) ( ) ............................................................................................................ Internally LimitedNote 1

Lead Temperature (Soldering, 5 sec.)................................................................................................................... +260°C

Junction Temperature (TJ)...................................................................................................................... –40°C to +125°C

Storage Temperature (TS)...................................................................................................................... –65°C to +150°C

ESD Rating ( ) .................................................................................................................................................. 2 kVNote 2

Operating Ratings ††

Supply Voltage (VIN) ..................................................................................................................................... 2.5V to 5.5V

Enable Voltage (V

EN) ..........................................................................................................................................0V to V

Junction Temperature (TJ)...................................................................................................................... –40°C to +125°C

Package Thermal Resistance

1 mm x 1 mm UDFN-4 (JA) ...............................................................................................................................250°C/W

1.2 mm x 1.2 mm TQFN-8 (JA)..........................................................................................................................250°C/W

SC-70-5 (JA) ...................................................................................................................................................256.5°C/W