OB2269CP Datasheet – Current Mode PWM Controller – LiteON

Part Number : OB2269CP

Function : Current Mode PWM Controller ( With Frequency Shuffling )

Package : SOP-8 Type

Manufacturers : LiteOn Technology

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OB2269CP pwm controller

Description :

OB2269CP is a highly integrated current mode PWM control IC optimized for high performance, low standby power and cost effective offline flyback converter applications in above 20W power level.

PWM switching frequency at normal operation is externally programmable and trimmed to tight range.

At no load or light load condition, the IC operates in extended ‘burst mode’ to minimize switching loss.
Lower standby power and higher conversion efficiency is thus achieved.

 

Pinouts :

OB2269CP datasheet pinout

 

FEATURES

1. Extended Burst Mode Control For Improved Efficiency and Minimum Standby Power Design

2.  Audio Noise Free Operation

3. External Programmable PWM Switching Frequency

4. Internal Synchronized Slope Compensation

 

OB2269CP circuit

 

OB2269CP Datasheet

OB2269CP pdf

Other data sheets within the file :  OB2268, OB2268AP, OB2268APV, OB2269

 

DAP002 Datasheet – PWM Controller – DEI

Part Number : DAP002 ( = L5991 )

Function : PWM ( Pulse-Width Modulation ) Controller

Package : SOP 16 Pin

Manufacturers : DEI, ST

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DAP002 datasheet dei

DAP002 PWM Controller

 

Description

This primary controller I.C., developed in BCD60II technology, has been designed to implement off line or DC-DC power supply applications using a fixed frequency current mode control. Based on a standard current mode PWM controller this device includes some features such as programmable soft start, IN/OUT synchronization, disable (to be used for over voltage protection and for power management), precise maximum Duty Cycle Control, 100ns leading edge blanking on current sense, pulse by pulse current limit, overcurrent protection with soft start intervention, and Standby function for oscillator frequency reduction
when the converter is lightly loaded.

Pinout

L5991 DAP002 pinout

Features

1. CURRENT-MODE CONTROL PWM
2. SWITCHINGFREQUENCY UP TO 1MHz
3. LOW START-UP CURRENT (< 120mA)
4. HIGH-CURRENT OUTPUT DRIVE SUITABLE FOR POWERMOSFET (1A)
5. FULLY LATCHED PWM LOGIC WITH DOUBLE PULSE SUPPRESSION
6. PROGRAMMABLE DUTY CYCLE
7. 100%AND50%MAXIMUMDUTY CYCLELIMIT
8. STANDBY FUNCTION
9. PROGRAMMABLE SOFT START
10. PRIMARY OVERCURRENT FAULT DETECTION WITH RE-START DELAY
11. PWMUVLO WITH HYSTERESIS
12. IN/OUT SYNCHRONIZATION
13. LATCHED DISABLE
14. INTERNAL 100ns LEADING EDGE BLANKING OF CURRENT SENSE

Refernece Site

1. http://monitor.espec.ws/section27/topic179114.html

DAP002 Datasheet

 

 


Other data sheets within the file : DAP002TR