NCP1253 Datasheet Current-Mode PWM Controller

Manufacturer: onsemi

NCP1253 current-mode pwm controller by onsemi - Datasheet Preview

Datasheet Details

Part number	NCP1253
Manufacturer	onsemi
File Size	396.64 KB
Description	Current-Mode PWM Controller
Download	NCP1253 Download (PDF)

Overview

DATA SHEET www.onsemi.com Current-Mode PWM Controller for Off-line Power Supplies NCP1253 The NCP1253 is a highly integrated PWM controller capable of delivering a rugged and high performance offline power supply in a tiny TSOP−6 package.

With a supply range up to 28 V, the controller hosts a jittered 65 kHz or 100 kHz switching circuitry operated in peak current mode control.

When the power on the secondary side starts to decrease, the controller automatically folds back its switching frequency down to a minimum level of 26 kHz.

Key Features

Fixed.
Frequency 65 kHz or 100 kHz Current.
Mode Control Operation.
Frequency Foldback Down to 26 kHz and Skip.
Cycle in Light Load Conditions.
Adjustable Ramp Compensation.
Internally Fixed 4 ms soft.
start.
Timer.
based Auto.
Recovery or Latched Short.
Circuit Protection.
Frequency Jittering in Normal and Frequency Foldback Modes.
Latched OVP on VCC.
Up to 28 V VCC Operation.
Extremely Low No.

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