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Non-Isolated Step-Down 3-Terminal DC/DC Converters

BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50

Data Sheet

2011.08 -

Rev. A

www.rohm.com

© 2011 ROHM Co., Ltd. All rights reserved.

BP5275

BP5275

BP5275

4.5 to 14

4.5 to 14

5.0 to 14

V

1.8

2.5

3.3

V

500 / 800

500 / 800

500 / 800

mA

BP5275

BP5275

BP5275

BP5275

BP5275

6.0 to 14

5.0

73

78

83

88

500 / 800

%

Unit

Parameter

Symbol

Limits

Unit

V

1max

2max

°C

°C

Topr

Tstg

Tcmax

°C

°C

°C

13.8 MAX

2xC0.5

C0.5

5.2

0.5

2.54

±0.2

0.75

2.54

±0.2

1.3

Pin No.1 2 3

The BP5275 series of DC/DC converters utilize a synchronous

rectification system.

A control circuit, switching element, and coil are built in, along

with input/output capacitors, resulting in stable operation with

no external components required.

High conversion efficiency, combined with an original heat

dissipation structure, enables configuration an ultra-compact

switching power supplies.

500mA output is possible with no heat sink required (800mA

with heat sink).

In addition, the ICs are pin-compatible with conventional

TO-220 LDO regulators, making replacement easy.

Low ripple voltage with high precision output ensure stable

operation against the fluctuating voltages from main power

supplies, making them ideal for use as local power supplies

(i.e. for microcontrollers).

Description

Dimensions (Unit : mm)

Applications

Features

List of the series

Absolute maximum ratings (Ta=25

°C)

Power supplies for copiers, personal computers,

facsimiles, AV equipment, measuring instruments,

vending machines, security device, registers,

industrial equipment, and maintenance tools

7) Compact package.

BP5275-18 / BP5275-25 / BP5275-33 / BP5275-50 : SIP3

2) High power conversion efficiency.

3) Heat sink unnecessary.

Input voltage

Input voltage

Operating temperature range

Storage temperature range

Allowable maximum surface temperature

Maximum output current 1

Maximum output current 2 (with Heat Sink)

Output voltage

Power conversion

efficiency (Vin=12V)

Maximum output current

(no heat sink / include heat sink)

Note : Dimensions without tolerance is typical.

1) No external parts required

4) Low output ripple voltage

5) High output voltage accuracy

6) Pin-compatible with conventional 3-pin LDOs

15

−30 to 85

−40 to 105

100

500

800

15

−30 to 85

−40 to 105

100

500

800

15

−30 to 85

−40 to 105

100

500

800

15

−30 to 85

−40 to 105

100

500

800