Description
Features
- Wide input range: 2.7V~5.5V
- High efficiency step-up 3-Channel LED driver
- 3-Ch current sinks, up to 8-LEDs per string
- Up to 29.8mA/Ch in backlight mode and up to 59.6mA/Ch in flash mode;
- +/-0.6% current matching at 20.2mA;
- +/-1.5% current accuracy at 20.2mA
- I2C/PWM dualdimming control scheme
- 11-bit I2C exponentialor linear mapping with programmable transition ramp time
- Wide range PWM dimming with programable transition ramp time
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- 100Hz to 100kHz frequency
- 0.2% to 100% duty cycle at 20kHz
- Programmable current sink turn on/off ramp time and shape
- Selectable boost converter switching frequency 1MHz or 500kHz with 20% shift up option
- Programmable input PWM hysteresis to minimize jitter at low PWM duty cycle
- Programmable OVP (25.9V/32V) and current limit (2.6A/1.8A)
- Programmable flash current and timeout
- LED open/short protection
- Status reporting through I2C interface
- 12-ball 1.19mm x 1.64mm WLCSP or a 16-lead 3mm x 3mm x 0.75mm Thin-QFN package.
Applications
- Smartphone/Tablet Backlight and Selfie Flash
Key Electrical Specifications
Vin  (Min)  | Vin  (Max)  |  Over Voltage   Prptection  |  Chanels  |  Number   of LEDs |  Maximum   Current  |  Dimming   Control | Switching  Frequency  |  Package  |
2.7V | 5.5V | 26/32V | 3 | 24 | Â 30mA/60mA (flash) | I2Cand PWM | 0.5/1MHz | Â WLCSP-12/TQFN33-16 |
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