MSK5040-3.3H Datasheet, PDF (1/7 Pages) M.S. Kennedy Corporation – HIGH EFFICIENCY, 4 AMP 1% ACCURATE SURFACE MOUNT SWITCHING REGULATORS

MIL-PRF-38534 CERTIFIED
M.S.KENNEDY CORP.
HIGH EFFICIENCY,
4 AMP 1% ACCURATE
SURFACE MOUNT
SWITCHING REGULATORS
5040
SERIES
4707 Dey Road Liverpool, N.Y. 13088
[phone]
FEATURES:
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:
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.
EQUIVALENT SCHEMATIC
TYPICAL APPLICATIONS
Step-down Switching Regulator
Microprocessor Power Source
High Efficiency Low Voltage
Subsystem Power Supply
PIN-OUT INFORMATION
1 Case
34-44 Vout
2 Sense High 23-33 Ground
3 Sense Low 11-22 Vin
4 N/C
10 Enable
5 RF High
9 N/C
6 N/C
8 Cton
7 N/C
1
Rev. F 2/06