IC PWM CONTROLLER R7731AGE R7731A R7731 AGE IDP DP IDP= DP= SHARP

Detail IC PWM CONTROLLER R7731AGE R7731A R7731 AGE IDP DP IDP= DP= SHARP

General Description
The R7731A is a high-performance, low cost, low start-up
current and current mode PWM controller with burst triple
mode to support green mode power saving operation. The
R7731A integrates functions of soft start, Under Voltage
LockOut (UVLO), Leading Edge Blanking (LEB), Over
Temperature Protection (OTP) and internal slope
compensation. It provides the users a superior AC/DC
power application of higher efficiency, low external
component counts and lower cost solution.
To protect the external power MOSFET from being
damaged by supply over voltage, the R7731A output driver
is clamped at 12V. Furthermore, R7731A features fruitful
protections like Over Load Protection (OLP) and Over
Voltage Protection (OVP) to eliminate the external
protection circuits and provide reliable operation. R7731A
is available in SOT-23-6 and DIP-8 packages.

Features
z Very Low Start-up Current (<30μA)
z 10/14V UVLO
z Soft Start Function
z Current Mode Control
z Jittering Switching Frequency
z Internal Leading Edge Blanking
z Built-in Slope Compensation
z Burst Triple Mode PWM for Green-Mode
z Cycle-by-Cycle Current Limit
z Feedback Open Protection
z Over Voltage Protection
z Over Temperature Protection
z Over Load Protection
z Soft Driving for Reducing EMI
z Driver Capability ±200mA
z High Noise Immunity
z Opto-Coupler Short Protection
z RoHS Compliant and Halogen Free
Applications
z Adaptor and Battery Charger
z ATX Standby Power
z Set-Top Box (STB)
z DVD and CD(R)
z TV/Monitor Standby Power
z PC Peripherals

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