4707 Dey Road Liverpool, N.Y. 13088

M.S.KENNEDY CORP.

(315) 701-6751

FEATURES:

5043

HIGH EFFICIENCY,

8 AMP ADJUSTABLE

SURFACE MOUNT

SWITCHING REGULATOR

Up To 93% Efficiency For 5V Operation

8 Amp Output Current

4.5V to 30V Input Range

User Adjustable Output Voltage from 1.2V to 5.5V

300KHz Switching Frequency @ 2.5 Amps

User Programmable Soft-Start

Quiescent Current < 2.5mA

User Programmable Current Limit

Contact MSK for MIL-PRF-38534 Qualification Status

Available with Gull Wing Leads

DESCRIPTION:

EQUIVALENT SCHEMATIC

The MSK 5043 is a high efficiency, 8 amp, surface mount switching regulator. Output voltage is user adjustable

through the use of two external resistors or one external potentiometer. Output voltages from 1.2 volts to 5.5 volts

are possible. The operating frequency of the MSK 5043 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 93% operating efficiency at 5 volts out,

keep the total internal power dissipation of the MSK 5043 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

Amp In

N/C

1

2

3

4

5

6

7

34-44

23-33

11-22

10

9

8

Vout

Ground

Vin

Enable

Ref Out

Cton

Rev. A

2/06

1