Overview
SD5106A is a boost constant-current LED driver operating from a DC5V to 40V input, with low ripple and an integrated power MOS. Its fixed-frequency oscillator and frequency-compensation circuit simplify design. When input voltage is greater than or equal to 12V, SD5106A can drive 5 to 10 1W LEDs in series. The PWM loop linearly adjusts duty cycle from 0~90%. It includes overcurrent protection and EN-pin logic-level shutdown. Internal compensation reduces external component count.
Features:
· Wide 5V to 40V input-voltage range
· 0.22V output-current-sense voltage
· Drives 2~10 1W LEDs in series
· Fixed 400KHz switching frequency
· 2A maximum switching current
· SW overvoltage protection
· Conversion efficiency above 93%
· EN-pin TTL shutdown
· Excellent line and load regulation
· Integrated power MOS
· Integrated frequency compensation
· Integrated soft start
· Integrated thermal shutdown
· Integrated current limiting
· SOP8 package
Applications:
· Boost constant-current drive
· Display LED backlighting
· General LED lighting
Applications
- Boost constant-current drive
- Display LED backlighting
- General LED lighting
TECHNICAL DOCUMENTS
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