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AW2027DNR

3-Channel LED Drivers with Auto Charging Indicator

AW2027 is a three-channel constant current LED driver with auto charging indication function. The maximum output current is 4-level selectable (5mA/ 10mA/15mA/30mA). The driving current of each LED has 16 levels configurable so as to achieve  4096  color  mixing.  The  256-level exponential PWM creates fine and smooth dimming effect even in low brightness. AW2027 can provide auto charging indication under the condition of low battery voltage. When the voltage of battery is too low, and the I 2 C interface halts, the internal pattern controller will be activated by pulling pin CHRG to high, and pin LED1 will output blinking lighting with period of 2s and max 6mA current. AW2027 contains three independent pattern controllers. Three LEDs can be controlled to work synchronously or individually according to different applications.

Characteristic

l  3-channel constant current LED drivers

n  4-level IMAX selections: 5/10/15/30mA

n  16-level current setting for each LED4096 mixed-color available

n  256-level exponential PWM dimming

l  Automatic breathing light

n  Three independent pattern controllers

n  Individual and sync control selectable

l  Support charging indication under low battery voltage condition

l  Directly start up blinking on LED1 via pulling pin CHRG up to high

n  Blink period 2s, max output current 6mA

l  LED current accuracy: ±3%

l  LED matching accuracy: ±3%

l  Low dropout voltage: 50mV

l  400kHz I2C interface (address: 0x64)

l  Shutdown control by pulling down pin SCL

l  UVLO and OTP protection

l  Single power supply, 2.5V~5.5V

l  DFN1.5mm×1.5mm×0.45mm -8L package


Datasheet

Application note

Title Type Size Date Download
DS_AW2027_EN_V1.2_3 LED Drivers with Auto Charging Indicator.pdf PDF 2.8M 2019-01-05
  • LED Channel
    Audio Sync.
    Charging Indicator
    Auto Breath
    Global Max Current(mA)
    Global Current Level
    Individual Current Level
    PWM Level
    Power Supply (V)
Package form Number of pins Long(mm) Width(mm) Thick(mm) Pin spacing(mm) Heat sink Package drawing
DFN 1.5×1.5×0.45 -8L 8 1.5 1.5 0.45 0.4 Y
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