MIC5237 판매점 - 500mA Low-Dropout Regulator Preliminary Information

MIC5237 반도체 회로 부품 판매점

500mA Low-Dropout Regulator Preliminary Information

Micrel Semiconductor

MIC5237

Micrel

MIC5237

500mA Low-Dropout Regulator

Preliminary Information

General Description

The MIC5237 is a general-purpose low-dropout regulator

capable of 500mA output current with better than 3% output

voltage accuracy. Using Micrel’s proprietary Super

ßeta PNP™ process with a PNP pass element, these regu-

lators feature less than 300mV dropout voltage and typically

8mA ground current at full load.

Designed for applications that require moderate current over

a broad input voltage range, including hand-held and battery-

powered devices, the MIC5237 is intended for applications

that can tolerate moderate voltage drop at higher current.

Key features include low ground current to help prolong

battery life, reversed-battery protection, current limiting, over-

temperature shutdown, and thermally efficient packaging.

The MIC5237 is available in fixed output voltages only.

For space-critical applications and improved performance,

see the MIC5209 and MIC5219. For output current require-

ments up to 750mA, see the MIC2937.

Features

• Guaranteed 500mA output over the full operating

temperature range

• Low 300mV typical dropout voltage at full load

• Extremely tight load and line regulation

• Current and thermal limiting

• Reversed-battery protection

• TO-220 and TO-263 packages

• Low temperature coefficient

• No-load stability

• Low-noise output

Applications

• Portable and laptop computers

• Desktop computer

• Battery chargers

• SMPS post-regulator/dc-to-dc modules

• Consumer and personal electronics

Typical Application

Ordering Information

Part Number

MIC5237-2.5BT

MIC5237-2.5BU

MIC5237-3.3BT

MIC5237-3.3BU

MIC5237-5.0BT

MIC5237-5.0BU

Voltage

2.5V

3.3V

5.0V

Junct. Temp. Range

–40°C to +125°C

Package

TO-220

TO-263

TO-220

TO-263

TO-220

TO-263

VIN

≥5.6V

1.0µF

MIC5237-5.0

IN OUT

VOUT

5.0V ±3%

GND

1.0µF

tantalum

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

January 2000

MIC5237

Pin Configuration

MIC5237-x.xBT

(TO-220-3)

3 OUT

2 GND

1 IN

3 OUT

2 GND

1 IN

MIC5237-x.xBU

(TO-263-3)

Pin Description

Pin No. Pin Name

2, TAB

GND

OUT

Pin Function

Supply Input

Ground: TO-220 and TO-263 pin 2 and TAB are internally connected.

Regulator Output

Micrel

Absolute Maximum Ratings

Input Voltage (VIN) ........................................ –20V to +20V

Power Dissipation (PD) ............................ Internally Limited

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

Lead Temperature (soldering, 5 sec.) ....................... 260°C

Operating Ratings

Input Voltage (VIN) ....................................... +2.5V to +16V

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

Package Thermal Resistance

TO-220 (θJA) ....................................................... 55°C/W

TO-220 (θJC) ......................................................... 3°C/W

TO-263 (θJC) ......................................................... 3°C/W

MIC5237

2 January 2000

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제조업체: Micrel Semiconductor

( micrel )

MIC5237 regulator

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국내 전력반도체 판매점

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MIC5237 반도체 회로 부품 판매점

500mA Low-Dropout Regulator Preliminary Information

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