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 --- z LD7535 --- 28.0V ± 1.5V. z LD7535A --- 21.0V ± 1.5V.

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

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