| Total Max Number |
3P10S |
| Per ch Max Current (mA) |
30 |
| Control Interface |
IIC
PWM |
| Min Duty (%) |
0.05 |
| VRef_PWM |
±3% |
| Flash Mode |
YES |
| Max Switching Frequency (MHz) |
1 |
| IO Level (V) |
1.8 |
| Power Supply (Min) (V) |
2.7 |
| Power Supply (Max) (V) |
5.5 |
| Temperature |
-40℃~85℃ |
| Package (mm) |
WLCSP 1.64X1.24-12B |
± 1% current matching across voltage, temperature, ａｎｄ process
± 3% current accuracy across voltage, temperature, ａｎｄ process
High efficiency, up to 91%
Up to 29.6mA/string ｉｎ backlight mode ａｎｄ up to 79.9mA/string ｉｎ flash mode
I2C/PWM dual dimming control mode
11-bit I2C exponential ｏｒ linear mapping with programmable transition ramp time
Programmable current sink turn on/off ramp time
Selectable boost converter switching frequency 1MHz ｏｒ 500kHz with shift up ａｎｄ down option
Programmable slew rate control minimize switching noise ａｎｄ improve EMI performance
Five configurable OVP thresholds (17.5V, 24V, 31V, 38V, 41.5V)
Four configurable current limit thresholds (900mA,1800mA, 2700mA, 3400mA)
Programmable flash current ａｎｄ timeout
LED open/short detection
WLCSP 1.64mm x 1.24mm-12B
7-bit slave address (A7~A1) is 0110110 binary(0x36H)
AW99703 is a highly accurate, highly matching three-string LCD backlighting power solution. It is a highly integrated step-up DC-DC converter operating with a wide input voltage from 2.7V to 5.5V ａｎｄ a temperature range from -40°C to 85°C, accommodating 1-cell lithium ion battery ｏｒ 5V supply.
The AW99703 integrates a high voltage MOSFET, ａｎｄ three high accuracy, high voltage current sinks. Each current sink can be regulated up to 29.6mA ｉｎ backlight mode. Ｉｎ flash mode, flash current sink can be regulated up to 79.9mA, ａｎｄ flash timeout can be regulated up to 1.5sec.
The LED current is adjusted via an I2C interface ｏｒ
through a logic level PWM input. The PWM duty cycle is internally sensed ａｎｄ mapped to an 11-bit linear current.
Thorough protection features include LED fault (open ａｎｄ short) detection, cycle-by-cycle current-limit protection, output over-voltage protection ａｎｄ thermal shutdown.
