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MA5602 Datasheet Preview

MA5602 Datasheet

38V Synchronous Buck Converter

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MA5602 (Preliminary)
38V Synchronous Buck Converter With CC/CV
GENERAL DESCRIPTION
MA5602 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.
MA5602 provides up to 2.5A output current at 180kHz 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 38V Operating Input Range
- Integrated 140mΩ Power MOSFET Switches
- Output Adjustable from VFB(1.0V) to 5.5V
- Up to 92% Efficiency
- Internal Soft-Start.
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 180KHz Frequency
- Cycle-by-Cycle Over Current Protection
- Input Under Voltage Lockout
APPLICATION CIRCUIT
VOUT=VFB × (1+R1/R2), VFB = 1.00V, R2 suggest 10k~30KΩ
ISEN = VSET / RSEN-ΔI/2 120mV / 50mΩ-0.2A = 2.2A
Major Power Technology Co., Ltd.
1/6
Rev.0.5 Apr.08, 2014




Major Power Technology

MA5602 Datasheet Preview

MA5602 Datasheet

38V Synchronous Buck Converter

No Preview Available !

MA5602 (Preliminary)
PIN ASSIGNMENT
The package of MA5602 is SOP8L-EP(Exposed pad); the pin assignment is given by:
Name
BS
IN
SW
GND
Description
Boot-Strap Pin. Supply high side gate driver. Decouple this pin to LX pin with 24ohm +
0.1uF ceramic cap.
Power Input. IN supplies the power to the IC, as well as the step-down converter switches.
Drive IN with a 8V to 38V power source. Bypass IN to GND with a suitably large capacitor
to eliminate noise on the input to the IC. See Input Capacitor.
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.
Ground.
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.
SEN+ The Current Sense Input (+) pin.
SEN- The Current Sense Input (-) pin.
RDER/MARKING INFORMATION
Order Information
Top Marking
Major Power Technology Co., Ltd.
2/6
Rev.0.5 Apr.08, 2014


Part Number MA5602
Description 38V Synchronous Buck Converter
Maker Major Power Technology
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MA5602 Datasheet PDF






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