General Description - Toshiba 20VL44 Service Manual

Monolithic Power Systems

General Description

The MP1593 is a step-down regulator with an
internal Power MOSFET.
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
Adjustable soft-start reduces the stress on the
input source at turn-on. In shutdown mode the
regulator draws 20µA of supply current.
The MP1593 requires a minimum number of
readily available
complete a 3A step down DC to DC converter
solution.
Ordering Information
Part Number ∗
Package
MP1593DN SOIC8 w/ Exposed
Paddle
∗ For Tape & Reel use suffix - Z (e.g. MP1593DN-Z)
Typical Application Circuit
INPUT
4.75 to 28V
EN
S S
It achieves
and thermal shutdown.
external components
Temperature
-40 to + 85°C
IN
BS
SW
MP1593
FB
GND COMP
Features
3A Output Current
3A Programmable Soft-Start
100mΩ Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 95% Efficiency
20µA Shutdown Mode
Fixed 385KHz Frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.75 to 28V Operating Input
Range
Output Adjustable From 1.22
Under Voltage Lockout
Available in 8 pin SOIC Package
to
Applications
Distributed Power Systems
Battery Charger
Pre-Regulator for Linear Regulators
OUTPUT
2.5V, 3A
MP1593
3A, 28V
Step Down Converter
PRELIMINARY