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Major Power Technology

MA5609 Datasheet Preview

MA5609 Datasheet

36V Synchronous Buck Converter

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MA5609
36V Synchronous Buck Converter With CC/CV
GENERAL DESCRIPTION
MA5609 is a wide input voltage, high efficiency Active CC step-down DC/DC converter that
operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode.
MA5609 provides up to 3.5A output current at 160kHz switching frequency. 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 an
SOP8L-EP(Exposed pad) package, provides a very compact solution with minimal external
components.
FEATURES
- Wide 8V to 36V Operating Input Range
- Integrated 75/45mPower MOSFET Switches
- Output Adjustable from VFB(1.00V±2%) to 16V
- Up to 95% Efficiency
- Internal Soft-Start and Fixed 160KHz Frequency.
- Stable with Low ESR Polymer Al-E-Capacitors
- Cycle-by-Cycle Over Current Protection
- Input Under/Over Voltage Lockout
APPLICATION CIRCUIT
VIN=8~32V
C7
100μF
35V
C1
4.7μF
35V
R5
C6 24
0.1μF
C5
10nF
IN PAD BS SW
FB
PGND MA5609
CS
GND GND
L1
33μH
CFB
3.3nF
VOUT+
5V 3A
R1
40k
C2
10μF
10V
C8
470μF
16V
R2 VOUT-
10k
RSEN
30m
VOUT=VFB × (1+R1/R2), VFB = 1.00V, R2 suggest 10k~40K
ISEN = 3.3A (ISEN=VCS(0.1V) / RSEN(30m))
Major Power Technology Co., Ltd.
1/9
Rev.1.3 Apr. 12 , 2017




Major Power Technology

MA5609 Datasheet Preview

MA5609 Datasheet

36V Synchronous Buck Converter

No Preview Available !

MA5609
PIN ASSIGNMENT
The package of MA5609 is SOP8L-EP(Exposed pad); the pin assignment is given by:
( Top View )
BS 1
IN 2
SW 3
PGND 4
MA5609
(SW)
8 GND
GND
CS
FB
SOP8L-EP
Name
BS
IN
SW
PGND
Description
Boot-Strap Pin. Supply high side gate driver. Decouple this pin to LX pin with 24ohm +
10nF 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.
Power Ground.
PAD Power Switching Output. (Connect to SW PIN).
FB
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a
resistive voltage divider from the output voltage.
CS The Current Sense pin.
GND Ground.
ORDER/MARKING INFORMATION
Order Information
Top Marking
MA5609 XX X
Package Type
ES: SOP8L-EP
Packing
Blank: Tube
A : Taping
Major Power Technology Co., Ltd.
2/9
Rev.1.3 Apr. 12 , 2017


Part Number MA5609
Description 36V Synchronous Buck Converter
Maker Major Power Technology
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MA5609 Datasheet PDF






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