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2009.07 - Rev.A

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Single-chip Type with Built-in FET Switching Regulator Series

Simple Step-down

Switching Regulators

with Built-in Power MOSFET

BD9873CP-V5,BD9874CP-V5

●

Description

The BD9873,74CP-V5 single-channel step-down switching regulator incorporates a Pch MOSFET capable,

as well as circuitry that eliminates the need for external compensation – only a diode, coil, and ceramic capacitor are required –

reducing board size significantly.

●

Features

1) Maximum switching current : 1.5A, 3.0A

2) Built-in Pch FET ensures high efficiency

3) Output voltage adjustable via external resistors

4) High switching frequency : 110kHz (fixed)

5) Soft start time : 4ms (fixed)

6) Over current and thermal shutdown protection circuits built in

7) ON/OFF control via STBY pin

●

Applications

TVs, printers, DVD players, projectors, gaming devices, PCs, car audio/navigation systems, ETCs, communication equipment, AV

products, office equipment, industrial devices, and more.

●

Absolute Maximum Ratings（Ta＝25℃）

Parameter

Symbol

Ratings

Unit

Supply Voltage（VCC-GND）

Vcc

36

V

STBY-GND

36

V

OUT-GND

36

V

INV-GND

5

V

Maximum Switching Current

Power Dissipation

Iout

1.5(*1) BD9873

A

3.0(*1) BD9874

A

Operating Temperature

Pd

2000(*2)

mW

Storage Temperature

Topr

-40～+85

℃

Supply Voltage（VCC-GND）

Tstg

-55～+150

℃

(*1) Do not exceed Pd, ASO.

(*2) Derated at 16mW/℃ over Ta=25℃

No.09027EAT39