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AP65454 - 650kHz ADAPTIVE COT STEP-DOWN CONVERTER

General Description

The AP65454 is an adaptive, constant, on-time mode synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy for low-voltage regulation in digital TVs and monitors.

Key Features

  • programmable soft-start, UVLO, OTP and OCP to protect the circuit. This IC is available in SO-8EP package. Pin Assignments ( Top View ) EN 1 FB 2 VREG5 3 SS 4 8 7 6 5 SO-8EP VIN BS SW GND AP65454 operates in continuous conduction mode (CCM) in light-load conditions for better EMI performance. AP65453 and AP65455 are the options for light-load efficiency enhancement. Features.
  • Fixed Frequency Emulated Constant On-Time Control.
  • Good Stability Independent of the Output Capacitor E.

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Other Datasheets by Diodes Incorporated

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AP65450 650kHz ADAPTIVE COT STEP-DOWN CONVERTER
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AP65453 650kHz ADAPTIVE COT STEP-DOWN CONVERTER
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AP65400 LIGHT LOAD IMPROVED 4A SYNCH DC/DC BUCK CONVERTER

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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NOT RECOMMENDED FOR NEW DESIGN USE AP65450 AP65454 4A, 18V, 650kHz ADAPTIVE COT STEP-DOWN CONVERTER Description The AP65454 is an adaptive, constant, on-time mode synchronous buck converter providing high efficiency, excellent transient response and high DC output accuracy for low-voltage regulation in digital TVs and monitors. The constant-on-time control scheme handles wide input/output voltage ratios and provides low external component count. The internal proprietary circuit enables the device to adopt both low equivalent series resistance (ESR) output capacitors, such as SP-CAP or POSCAP as well as ultra-low ESR ceramic capacitors. The AP65454 also features programmable soft-start, UVLO, OTP and OCP to protect the circuit. This IC is available in SO-8EP package.