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Major Power Technology

MA5605 Datasheet Preview

MA5605 Datasheet

36V 4.5A Synchronous Buck Converter

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MA5605
36V 4.5A Synchronous Buck Converter With 2CH CC/CV
GENERAL DESCRIPTION
The MA5605 is a monolithic synchronous buck regulator. The device integrates internal high
side and external low side power MOSFETs, and provides 4.5A of continuous load current over a
wide input voltage. 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, and provides a very compact solution with minimal external components.
FEATURES
- Wide 8V to 36V Operating Input Range
- Integrated 75mhigh side Power MOSFET Switches
- Output Adjustable : VFB(1.00V±2%) .
- 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
C1
220μF
35V
C6 R5 C5
0.1μF 24Ω 10nF
C7
10μF
35V IN
BS
L1
MA5605 SW
33μH
PAD(GND)
40N04S
GND LG NMOS
CS2 CS1
FB
M1
R1
40kΩ
R2
10kΩ
VOUT=5V
CFB
3.3nF
C2
470μF
16V
C8 5V 2.4A 5V 1.0A
10μF VOUT1- VOUT2-
10V
RSEN RSEN
38mΩ 80mΩ
VOUT=VFB × (1+R1/R2), VFB = 1.00V, R2 suggest 1k~40K
ISEN = 2.63A (ISEN=VCS1(0.1V) / RSEN(38m))
Major Power Technology Co., Ltd.
1/9
Rev.1.2 Apr. 12, 2017




Major Power Technology

MA5605 Datasheet Preview

MA5605 Datasheet

36V 4.5A Synchronous Buck Converter

No Preview Available !

MA5605
PIN ASSIGNMENT
The package of MA5605 is SOP8L-EP(Exposed pad); the pin assignment is given by:
Name
Description
BS Boot-Strap Pin. Supply high side gate driver.
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.
GND Ground
CS1 The Current Sense 1 pin.
CS2 The Current Sense 2 pin.
ORDER/MARKING INFORMATION
Order Information
MA5605 XX X
Package Type
ES: SOP8L-EP
Packing
Blank: Tube
A : Taping
Top Marking (SOP-8L)
Major Power Technology Co., Ltd.
2/9
Rev.1.2 Apr. 12, 2017


Part Number MA5605
Description 36V 4.5A Synchronous Buck Converter
Maker Major Power Technology
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MA5605 Datasheet PDF






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