ACE7358F

High Efficiency, 1.2MHz, 52V Input, 0.8A Asynchronous Step Down Regulator

VER 1.2

1

Description

The ACE7358F develops a high efficiency asynchronous step down DC/DC regulator capable of

delivering 0.8A output current. The IC adopts current mode adaptive constant off time control. The

ACE7358F operates over a wide input voltage range from 4.5V to 52V and integrates main switch with

Low output voltage ripple and small external inductor and capacitor sizes are achieved with 1.2MHz

switching frequency.

Features

⚫

⚫

4.5-52V Input Voltage Range

⚫

0.8A Output Current Capability

⚫

1.2MHz Pseudo Constant Switching Frequency

⚫

Internal Soft-start Limits the Inrush Current

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Hic-cup Mode Output Short Circuit Protection

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EN ON/OFF Control with Accurate Threshold

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Cycle by Cycle Peak Current Limit

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0.6V±1 % Reference Voltage

⚫

SOT23-6 Package

Applications

⚫

Non-Isolated Telecommunication Buck Regulator

⚫

Secondary High Voltage Post Regulator

⚫

Automotive Systems

Parameter

Value

Supply Input Voltage

52V

BST-SW

4V

All Other Pins

1W

Package Thermal Resistance (Note 2)

100°C/W

25°C/W

Junction Temperature

150°C

Lead Temperature (Soldering, 10sec.)

260°C

Storage Temperature Range

-65°C to 150°C

Note 1: Stresses beyond the “Absolute Maximum Ratings” may cause permanent damage to the device. These are

stress ratings only. Functional operation of the device at these or any other conditions beyond those indicated in the

operational sections of the specification is not implied. Exposure to absolute maximum rating conditions for

extended periods may affect device reliability.

Note 2:

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