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SMD Type
Integrate Circuit
3A, 23V, 340KHz Synchronous Rectified Step-Down Converter
MP2307
■ Features
• 3A Continuous Output Current, 4A Peak Output Current
• Wide 4.75V to 23V Operating Input Range • Integrated 100mΩ Power MOSFET Switches • Output Adjustable from 0.925V to 20V • Up to 95% Efficiency • Programmable Soft-Start • Stable with Low ESR Ceramic Output Capacitors • Fixed 340KHz Frequency • Cycle-by-Cycle Over Current Protection • Input Under Voltage Lockout
SOP-8
■ Functional Block Diagram
FB 5
+ 1.1V --
+ 0.3V --
OVP RAMP
OSCILLATOR CLK
110/340KHz
SS 8
0.925V
-+ +
ERROR AMPLIFIER
CURRENT SENSE
AMPLIFIER
+
--
-- S Q RQ
+ CURRENT COMPARATOR
2 IN 5V
1 BS
3 SW
BS IN SW GND
1 2 3 4
COMP 6 EN 7
7V Zener
-2.5V +
+ 1.