FAN7340 Overview
The FAN7340 is a single-channel boost controller that integrates an N-channel power MOSFET for PWM dimming using Fairchild’s proprietary planar Doublediffused MOS (D MOS) technology. The IC operates as a constant-current source for driving high-current LEDs. It uses Current Mode control with programmable slope pensation to prevent subharmonic oscillation.
FAN7340 Key Features
- Single-Channel Boost LED Switch
- Internal Power MOSFET for PWM Dimming
- Current Mode PWM Control
- Internal Programmable Slope pensation
- Wide Supply Voltage Range: 10 V to 35 V
- LED Current Regulation: ±1%
- Programmable Switching Frequency
- Analog and PWM Dimming
- Wide Dimming Ratio: On Time=10 µs to DC
- Cycle-by-Cycle Current Limiting