ACE738D

2A, 24V Synchronous Step-Down Converter

VER 1.1

1

Description

The ACE738D is a current mode monolithic buck voltage converter. Operating with an input range of

4.5-24V, the ACE738D delivers 2A of continuous output current with two integrated N-Channel MOSFETs.

At light loads, regulators operate in low frequency to maintain high efficiency and low output ripple.

The ACE738D guarantees robustness with over current protection, thermal protection, start-up current

run-away protection, and input under voltage lockout.

The ACE738D is available in a 8-pin SOP8 package, which provides a compact solution with minimal

external components.

Features



4.5V to 24V operating input range 2A output current



Up to 94% efficiency



High efficiency (85>%) at light load



Fixed 500kHz Switching frequency



Input under voltage lockout



Available in SOP8 package



Start-up current run-away protection



Over current protection



Thermal protection

Application



Distributed Power Systems



Networking Systems



FPGA, DSP, ASIC Power Supplies



Green Electronics/ Appliances



Notebook Computers

Absolute Maximum Ratings

(1)

Parameter

Value

VIN, EN, SW Pin

-0.3V to 24V

BST Pin

SW-0.3V to SW+5V

All other Pins

-0.3V to 6V

Junction Temperature

(2)(3)

150℃

Lead Temperature

260℃

Storage Temperature

-65℃ to +150℃

1.

Exceeding these ratings may damage the device.

2.

The ACE738D guarantees robust performance from -40°C to 150°C junction temperature. The junction temperature range

specification is assured by design, characterization and correlation with statistical process controls.

3.

The ACE738D includes thermal protection that is intended to protect the device in overload conditions. Thermal protection

is active when junction temperature exceeds the maximum operating junction temperature. Continuous operation over the

specified absolute maximum operating junction temperature may damage the device.