MIL-PRF-38534 CERTIFIED
M.S.KENNEDY CORP.
4707 Dey Road Liverpool, N.Y. 13088
HIGH EFFICIENCY,
4 AMP ADJUSTABLE
SURFACE MOUNT
SWITCHING REGULATOR
5042
(315) 701-6751
FEATURES:
Up To 95% Efficiency For 5V Operation
4 Amp Output Current
4.5V to 30V Input Range
User Adjustable Output Voltage from 1.2V to 5.5V
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:
The MSK 5042 is a high efficiency, 4 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 5042 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 at 5 volts
out, keep the total internal power dissipation of the MSK 5042 down to an absolute minimum.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Step-down Switching Regulator
Microprocessor Power Source
High Efficiency Low Voltage
Subsystem Power Supply
1
2
3
4
5
6
7
1
PIN-OUT INFORMATION
Case
Sense High
Sense Low
N/C
RF High
Amp In
N/C
34-44
23-33
11-22
10
9
8
Vout
Ground
Vin
Enable
Ref Out
Cton
Rev. F 2/06
MSK [ M.S. KENNEDY CORPORATION ]
