SMD811

Closed-loop Switch-mode Boost Controller : Built-in 250V Input Regulator Constant-off Time Frequency Mode or Fixed Frequency Mode With PWM Dimming

Features

• Switch-mode Boost Controller for Single-switch

Drivers.

• High-side Current Sensing

• Closed-loop Control

• High PWM Dimming Ratio

• Internal 250V Linear Regulator

• 2% Threshold Voltage

• Fixed Frequency or Constant Off-time

Operation

• Adjustable Slope Compensation

• Logic Input for Enable and PWM Dimming

• Output Short-circuit Protection

• Output Overvoltage Protection

• Synchronization Capability

• Adjustable Current Sense

Applications

• RGB Backlight Applications

• Battery-powered LED Lamps

• DC/DC Boost LED Drivers