SM4500中文資料矽致微電子數(shù)據(jù)手冊PDF規(guī)格書

Features

? 5 V to 27 V Input Supply Voltage Range

? Maximum Output Adjustable up to 55 V

? High-Efficiency Step-up Regulator

. Peak-Current Mode Control – Fast Transient

. 210 kHz to 1.4 MHz Adjustable Switching Frequency

. Built-in 60 V, 2.5 A, 0.18 Ω MOSFET

? Six LED Current Sources

. Full-Scale LED Current Adjustable up to 30 mA

. ± 1.5 Current Matching Between Channels

. Headroom Control to Maximize Efficiency

? Dimming Control

. Wide PDIM Input Frequency: 100 Hz to 20 kHz

. Adjustable Output Dimming Frequency: 100 Hz to 20 kHz

. Selectable Dimming Controls

? Phase Shift PWM or Direct PWM

? Protections

. Output Overvoltage Protection

. LED Open Circuit Protection

. Thermal Shutdown

Applications

? LCD TV LED Backlighting