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            AW99703CSR

            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) protection, cycle-by-cycle current-limit protection, output over-voltage protection and thermal shutdown.


            產品特性

            l   ±1% current matching across voltage, temperature, and process

            l   ± 3% current accuracy across voltage, temperature, and process

            l   High efficiency, up to 91%

            l   Up to 29.6mA/string in backlight mode and up to 79.9mA/string in flash mode

            l   I2C/PWM dual dimming control mode

            l   11-bit I2C exponential or linear mapping with programmable transition ramp time

            l   Programmable current sink turn on/off ramp time

            l   Selectable boost converter switching frequency 1MHz or 500kHz with shift up and down option

            l   Programmable slew rate control minimize switching noise and improve EMI performance

            l   Five configurable OVP thresholds (17.5V, 24V, 31V, 38V, 41.5V)

            l   Four configurable current limit thresholds (900mA,1800mA, 2700mA, 3400mA)

            l   Programmable flash current and timeout

            l   LED open/short protection

            l   WLCSP 1.64mm x 1.24mm-12B

            l   7-bit slave address (A7~A1) is 0110110 binary(0x36H)


            Datasheet

            Application note

            產品型號 文檔格式 大小 下載
            AW99703CSR PDF
            • Total Max Number
              Control Interface
              Min Duty(%)
              VRef_PWM
              Flash Mode
              Switching Frequency (MHz)
              Package (mm)
            • AW99703CSR

              3P10S
              I2C/PWM
              0.05
              ±3%
              √ (80mA)
              1/0.5
              WLCSP 1.64×1.24-12B
            封裝形式 引腳數 長(mm) 寬(mm) 厚(mm) 引腳間距(mm) 散熱盤 文檔下載
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            国产疯狂女同互磨高潮在线看
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