General Description

The LD7535/LD7535A are low cost, low startup current,

current mode PWM controllers with green-mode powersaving

operation. The integrated functions include the

leading-edge blanking of the current sensing, internal slope

compensation and the tiny package of SOT-26. They

provide the users a superior AC/DC power application of

higher efficiency, low external component counts, and lower

cost solution.

Furthermore, LD7535/LD7535A features more protections

like OLP (Over Load Protection) and OVP (Over Voltage

Protection) to eliminate the external protection circuits. And

to satisfy different designs, 2 versions of OVP levels are

implemented as ---

Features

High-Voltage CMOS Process with Excellent ESD

protection

Very Low Startup Current (<20μA)

Current Mode Control

Non-audible-noise Green Mode Control

UVLO (Under Voltage Lockout)

LEB (Leading-Edge Blanking) on CS Pin

Programmable Switching Frequency

Internal Slope Compensation

OVP (Over Voltage Protection) on Vcc Pin

OLP (Over Load Protection)

300mA Driving Capability

Applications

Switching AC/DC Adaptor and Battery Charger

Open Frame Switching Power Supply

384X Replacement