Features
- Wide input range: 2.7V~5.5V
- High efficiency step-up 2-Channel LED driver
- 2-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
- +/-0.6% current matching at 20.2mA
- +/-1.5% current accuracy at 20.2mA
- I2C/PWM dual dimming control scheme
- 11-bit I2C exponential or 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 (1.8A/2.6A)
- 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
Key Electrical Specifications
| Vin (Min) | Vin (Max) | Number of LEDs/Channels | LED Channels | Total Number of LEDs | Brightness Control | Switching Frequency (MHz) | Current per Channel (Max) | Output OVP | Package |
| 2.7V | 5.5V | 8 | 2 | 16 | I2C and/or PWM | 1.0/0.5 | 29.8mA | 25.9V/32V | WLCSP-12TQFN33-16 |
Typical Application Diagram
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