SM8150A Description
SM8150A PMIC with White LED Driver 1. OVERVIEW The SM8150A is a charge pump type white LED driver, with 2-system programmable LDOs (Low Dropout Regulator), and step-down DC/DC converter power management IC. The white LED driver provides constant- current drive for 1 to 6 backlight white LED connected in parallel and 1 torch/strobe white LED.
SM8150A Key Features
- LCD backlight: Main-4ch/Sub-2ch (max 25mA/ch)
- Camera flash: 1ch (max 300mA)
- Power at ×1.5 mode is reduced by 25% from ×2 mode
- Power at ×1 mode is reduced by 50% from ×2 mode, 33% from ×1.5 mode
- Overtemperature thermal shutdown (TSD) cir
- Supply undervoltage lockout (UVLO) circuit built-in I Supply voltage range (VIN1 to VIN3): 2.7 to 4.6V Logic operating v
- Charge-pump frequency: 1.0MHz (typ)
- Charge-pump maximum output current: 450mA
- Backlight LED current: 25 ± 1.5mA/ch (max)
- Backlight LED relative accuracy: ± 3%