ACE7212E

18V, 2A, High Efficiency Synchronous Step-Down Converter

VER 1.1

1

Description

ACE7212E is a wide input range, high-efficiency and high frequency DC-to-DC step-down switching

regulator, capable of delivering up to 2A of output current. It adopts an Adaptive COT control scheme that

enables very fast transient response and provides a very smooth transition when the output varies from

light load to heavy load. During light load, ACE7212E goes into a PFM mode that saves switching loss

achieving high efficiency. The adaptive COT control also maintains a constant switching frequency across

line and load. An OVP function protects the IC itself and its downstream system against input voltage

surges. With this OVP function, the IC can stand off input voltage as high as 18V, making it an ideal

solution for industrial applications such as LCD TV, Set Top Box, Portable TV, etc.

Features



Wide Input Range: 4.5V-18V



Adaptive COT Control



Ultra-fast load transient response



High Efficiency PFM mode at light load



High Efficiency Synchronous operation



No load IQ 180uA



Low Rdson Internal power FETs



Capable of Delivering 2A



No External Compensation Needed



Thermal Shutdown and UVLO



Available in SOT-563 Package

Application



LCD TV



Set Top Box



xDSL Modem

Absolute Maximum Ratings

Parameter

Value

IN, SW, EN Voltage

–0.3V to 18V

BST Voltage

–0.3V

to SW+6V

FB Voltage

–0.3V to 6V

Operating Temperature Range

–40°C to 85°C

Storage Temperature Range

–55°C to 150°C

Thermal Resistance

θ

JA

130 °C /W

θ

JC

60 °C /W

Lead Temperature (Soldering 10ssec)

260°C

Note: Exceed these limits to damage to the device. Exposure to absolute maximum rating conditions may affect

device reliability.