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MA5604

Major Power Technology
Part Number MA5604
Manufacturer Major Power Technology
Description 38V 5A Synchronous Buck Converter
Published Jul 18, 2014
Detailed Description MA5604 38V 5A Synchronous Buck Converter  GENERAL DESCRIPTION The MA5604 is a monolithic synchronous buck regulator. ...
Datasheet PDF File MA5604 PDF File

MA5604
MA5604


Overview
MA5604 38V 5A Synchronous Buck Converter  GENERAL DESCRIPTION The MA5604 is a monolithic synchronous buck regulator.
The device integrates internal high side and external low side power MOSFETs, and provides 5A of continuous load current over a wide input voltage of 8V to 38V.
Current mode control provides fast transient response and cycle-by-cycle current limit.
An internal soft-start prevents inrush current at turn-on, This device, available in SOP8L-EP (Exposed pad) package, provides a very compact solution with minimal external components.
 - FEATURES Wide 8V to 38V Operating Input Range Integrated 90mΩ high side Power MOSFET Switches Output Adjustable from VFB(1V) to 20V Up to 95% Efficiency Internal Soft-Start Stable with Low ESR Ceramic Output Capacitors Fixed 160KHz Frequency Cycle-by-Cycle Over Current Protection Input Under/Over Voltage Lockout  APPLICATION CIRCUIT INPUT C1 220μF 50V C7 10μF 50V R4 100kΩ EN VDD COMP C4 0.
1μF 3.
3nF 15kΩ C3 R3 IN C6 0.
1μF BS SW LG FB Q1 R5 C5 0Ω 100nF L1 33μH NMOS R1 40kΩ R2 10kΩ C2 470μF 10V C8 22μF 10V MA5604 PAD(GND) OUTPUT 5V 5A VOUT=VFB × (1+R1/R2), VFB = 1.
00V, R2 suggest 10k~30kΩ Major Power Technology Co.
, Ltd.
Rev.
1.
0 Jun.
04, 2014 1/7 MA5604  PIN ASSIGNMENT The package of MA5604 is SOP8L-EP(Exposed pad); the pin assignment is given by: Name BS IN SW LG PAD FB Description Boot-Strap Pin.
Supply high side gate driver.
Decouple this pin to LX pin with 0.
1uF ceramic cap.
Power Input pin.
Bypass IN to GND with a suitably large capacitor to eliminate noise on the input to the IC.
Power Switching Output.
SW is the switching node that supplies power to the output.
Connect the output LC filter from SW to the output load.
Gate drive for external low side N-MOSFET.
.
Ground (Connect to GND).
Feedback Input.
FB senses the output voltage to regulate that voltage.
Drive FB with a resistive voltage divider from the output voltage.
Compensation Node.
COMP is used to compensate the regulation control loop.
Connec...


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