CM2576 datasheet(2/12 Pages) CHAMP

Part #	CM2576

Description	3A STEP DOWN VOLTAGE REGULATOR

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Manufacturer	CHAMP [Champion Microelectronic Corp.]

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CM2576

3A STEP DOWN VOLTAGE REGULATOR

2003/08/07

Preliminary Rev. 1.1

Champion Microelectronic Corporation

Page 2

PIN CONFIGURATION

TO-220

Top View

12

3

45

TO-263

Top View

3

2

1

VIN

4

5

VOUT

GN D

FB

ENABLE

ABSOLUTE MAXIMUM RATINGS

Input Voltage (VPOWER) …….………………………………………….……. +45V

ENABLE Pin Input Voltage ….…………………………………. –0.3V ≦V≦VIN

Operating Junction Temperature Range, TJ ……………...… 0℃ to +150℃

Storage Temperature ………………………………….….…... -65℃ to +150℃

Lead Temperature (10 sec.) ……..……………………..….…………….... 260℃

POWER DISSIPATION TABLE

Package

ΘJA (℃

℃

/W)

Derating factor (mW/℃

℃

)

TA >= 25℃

℃

TA <= 25℃

℃

Power rating (mW)

TA = 70℃

℃

Power rating (mW)

TA = 85℃

℃

Power rating (mW)

TO-220

45

22.2

2775

1776

1443

TO-263

45

22.2

2775

1776

1443

Note:

1. ΘJA : Thermal Resistance-Junction to Ambient, DF: Derating factor, PO: Power consumption.

Junction Temperature Calculation: TJ = TA + (PD x ΘJA ), PO = DF x (TJ – TA)

The ΘJA numbers are guidelines for the thermal performance of the device/PC-board system.

All of the above assume no ambient airflow.

2. ΘJT : Thermal Resistance-Junction to Ambient, TC: case (Tab) temperature, TJ = TC + (PD x ΘJA )

RESOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Min.

Typ.

Max

Units

Input Voltage (VIN)

VIN

40

V

Temperature Range

TJ

-40

125

℃

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