ACE7333C

28V, 3A, 500KHz Synchronous Step-Down DC/DC Converter

VER 1.2

1

Description

The ACE7333C is a fully integrated synchronous rectified step-down converter that provides wide 3.8V

to 28V input voltage range and 3A continuous load current capability. The ACE7333C can operate at PFM

mode to achieve high efficiency and reduce power loss at light load. In shutdown mode, the Max supply

current is

about 3μA.

The ACE7333C protection function includes cycle-by- cycle current limit, UVLO and thermal shutdown.

Besides, internal soft-start prevents inrush current at fast power-on. This device uses slope compensated

current mode control which provides fast load transient response. Internal loop compensation function

reduces the external compensator components and simplifies the design process.

The ACE7333C requires a minimum number of readily available standard external components and is

available in ESOP-8 (Exposed Pad) package and provides good thermal conductance.

Features



Wide Input Voltage Range: 3.8V to 28V



3A Output Current



0.8V Reference Voltage



Low RDS(ON) Integrated Power MOSFET

(150/90mΩ)



3μA(Max) Shutdown Current



Integrated internal compensation



High Efficiency at Light Load



Internal 1ms Soft-Start



Cycle-by-Cycle Current Limit



Over-Temperature Protection with Auto Recovery



Under Voltage Lockout(UVLO)



Hiccup Short Circuit Protection



Available in ESOP8 Exposed Pad Package



RoHS Compliant

Application



Distributed Power System



Flat Panel Television and Monitors



STB (Set-Top-Box)



Networking, XDSL Modem

Recommended Work Conditions

Item

Min

Max.

Unit

Supply Voltage VIN

3.8

28

V

Ambient Temperature

-40

85

°C