RT5016C

® RT5016C I2C Programmable Multi-Channel PMU with Battery Charger for CMOS DSC/DV General Description The RT5016C is a complete power supply solution for digital still cameras and other hand held devices. The RT5016C is composed of a multi-channel DC/DC power converter unit, a single-cell linear Li-ion battery charger, a charger type detector, and an I2C control interface. The power converter unit includes one synchronous stepup converter (CH1), one synchronous step-up/down converter (CH2), three synchronous step-down converters (CH3/4/5), two LDOs with input power as low as 1.5V (CH6/8), one WLED driver in synchronous high-voltage step-up mode or low-voltage current regulator mode (CH7), and a keep-alive LDO (CH9) for RTC application. All converters are internally frequency compensated and integrate power MOSFETs. The power converter unit provides complete protection functions : over-current, thermal shutdown, over-voltage, and under-voltage protection. The RT5016C has a WAKEUP impulse generation circuitry to monitor VIN or BAT installation event. To fulfill most of applications, the RT5016C has six preset power-on/off sequences. The battery charger includes Auto Power Path Management (APPM). No external MOSFETs are required. The charger can enter sleep mode when power is removed. Charging tasks are optimized by using a control algorithm to vary the charge rate, including pre-charge mode, fast charge mode and constant voltage mode. The charge current can also be programme...