4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

FEATURES:

5040

SERIES

HIGH EFFICIENCY,

4 AMP 1% ACCURATE

SURFACE MOUNT

SWITCHING REGULATORS

Up To 95% Efficiency For 5V Version

4 Amp Output Current

4.5V to 30V Input Range

Preset 1.9V, 2.5V, 3.3V or 5.0V Output Versions

300KHz Switching Frequency @ 1 Amp

User Programmable Soft-Start

Quiescent Current < 2.5mA

User Programmable Current Limit

Available with Gull Wing Leads

Contact MSK for MIL-PRF-38534 Qualification Status

DESCRIPTION:

EQUIVALENT SCHEMATIC

The MSK 5040 series are high efficiency, 4 amp, surface mount switching regulators.

The output voltage is

configured for 1.9V, 2.5V, 3.3V or 5.0V internally with a tolerance of 1% at 1.5 amps. The operating frequency of

the MSK 5040 is 300KHz and is internally set. An external "soft start" capacitor allows the user to control how

quickly the output comes up to regulation voltage after the application of an input. An extremely low quiescent

current of typically less than 2.5mA and nearly 95% operating efficiency keep the total internal power dissipation of

the MSK 5040 down to an absolute minimum.

MIL-PRF-38534 CERTIFIED

TYPICAL APPLICATIONS

PIN-OUT INFORMATION

Step-down Switching Regulator

Microprocessor Power Source

High Efficiency Low Voltage

Subsystem Power Supply

Case

Sense High

Sense Low

N/C

RF High

N/C

N/C

1

2

3

4

5

6

7

34-44

23-33

11-22

10

9

8

Vout

Ground

Vin

Enable

N/C

Cton

Rev. F 2/06

1