AW9523B
Every spec below is cited to the manufacturer datasheet. Pick your exact ordering code, compare the closest alternatives, then ask the assistant what it means for your design.
What the AW9523B family does
The AW9523B is an I2C interface controller integrating 16-channel constant current LED drivers and 16 expandable GPIO ports. It supports 256-step linear dimming across four selectable current ranges and operates on a 2.4V to 5.5V single supply. The device features a 400kHz I2C interface, low standby current under 0.1µA, and hardware reset with 10µs debounce. Engineers typically use it for mobile phones, MP3 players, GPS units, and digital photo frames to manage backlighting or expand GPIO functions. It offers ±4000V HBM ESD protection and functions across -40°C to 85°C in a TQFN4X4-24L package.
AW9523B datasheet parameters
| Parameter | Min | Typ | Max | Conditions | Source |
|---|---|---|---|---|---|
| quiescent current | — | 100 nA | — | ISTB shutdown current, RSTN = GND, typical | AWinic datasheet, p. 6 — 电气特性 |
| output current | — | 37 mA | — | LED max drive current IMAX, default internal resistor, typical | AWinic datasheet, p. 20 |
| supply voltage range | 2.4 V | — | 5.5 V | VCC, TA = -40 to 85 °C | AWinic datasheet, p. 6 — 电气特性 |
| operating temperature | -40 °C | — | 85 °C | AWinic datasheet, p. 5 — 订购信息 | |
| standby current | — | — | 2 µA | RSTN = GND; istb | AWinic datasheet, p. 6 — 电气特性 |
| dropout voltage | — | 80 mV | — | Vdrop2, high 10 channels P02~P0 7, P14~P1 7, IOUT = 21mA, ISEL<1:0>=01, DIMx = C0H | AWinic datasheet, p. 7 — 电气特性 |
| rise time | — | — | 300 ns | $ I^{2}C $ 接口时序参数 | AWinic datasheet, p. 7 — 接口时序参数 |
| fall time | — | — | 300 ns | $ I^{2}C $ 接口时序参数 | AWinic datasheet, p. 7 — 接口时序参数 |
| output count | — | 16 | — | 16 bidirectional GPIO / LED channels | AWinic datasheet, p. 10 |