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Major Power Technology

MA5604 Datasheet Preview

MA5604 Datasheet

38V 5A Synchronous Buck Converter

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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
R5 C5
C6 100nF
0.1μF
IN BS
EN MA5604 SW
PAD(GND)
VDD LG
COMP
FB
C4
0.1μF
3.3nF
C3
15kΩ R3
L1
33μH
Q1
NMOS
R1
40kΩ
R2
10kΩ
OUTPUT
5V 5A
C2
470μF
10V
C8
22μF
10V
VOUT=VFB × (1+R1/R2), VFB = 1.00V, R2 suggest 10k~30kΩ
Major Power Technology Co., Ltd.
1/7
Rev.1.0 Jun.04, 2014




Major Power Technology

MA5604 Datasheet Preview

MA5604 Datasheet

38V 5A Synchronous Buck Converter

No Preview Available !

MA5604
PIN ASSIGNMENT
The package of MA5604 is SOP8L-EP(Exposed pad); the pin assignment is given by:
Name
Description
BS
Boot-Strap Pin. Supply high side gate driver. Decouple this pin to LX pin with 0.1uF
ceramic cap.
IN
Power Input pin. Bypass IN to GND with a suitably large capacitor to eliminate noise on
the input to the IC.
SW
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.
LG Gate drive for external low side N-MOSFET..
PAD Ground (Connect to GND).
FB
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a
resistive voltage divider from the output voltage.
COMP
Compensation Node. COMP is used to compensate the regulation control loop. Connect
a series RC network from COMP to GND to compensate the regulation control loop.
EN Enable control. Pull high to turn on. Do not float.
VDD Internal regulator pin
ORDER/MARKING INFORMATION
Order Information
Top Marking (SOP-8L)
Major Power Technology Co., Ltd.
2/7
Rev.1.0 Jun.04, 2014


Part Number MA5604
Description 38V 5A Synchronous Buck Converter
Maker Major Power Technology
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