VESTEL 17MB12, Руководство по обслуживанию

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15.3 MP1593
15.3.1 General Description
The MP1593 is a step-down regulator with an internal Power MOSFET. It achieves 3A
continuous output current over a wide input supply range with excellent load and line
regulation. Current mode operation provides fast transient response and eases loop
stabilization. Fault condition protection includes cycle-by-cycle current limiting and
thermal shutdown. Adjustable soft-start reduces the stress on the input source at turn-
on. In shutdown mode the regulator draws 20
μ A of supply current. The MP1593
requires a minimum number of readily available external components to complete a 3A
step down DC to DC converter solution.
15.3.2 Features
•
3A Output Current
•
Programmable Soft-Start
•
100m Ω Internal Power MOSFET Switch
•
Stable with Low ESR Output Ceramic Capacitors
•
Up to 95% Efficiency
•
20 μ A Shutdown Mode
•
Fixed 385KHz Frequency
•
Thermal Shutdown
•
Cycle-by-Cycle Over Current Protection
•
Wide 4.75 to 28V Operating Input Range
•
Output Adjustable from 1.22V
•
Under Voltage Lockout
•
Available in 8-Pin SOIC Package
15.3.3 Applications
•
Distributed Power Systems
•
Battery Chargers