RT5035B Datasheet | Richtek

RT5035A/B 7+3 Channel DC-DC Converters with RTC and I2C Interface General Description RT5035A/B is a highly-integrated DSC Power Management IC that contains 7ch switching DC-DC converters and two generic LDOs, one keep-alive low-quiescent LDO for RTC, one load switch with soft-start control and current limit, a switch with reverse leakage prevention for backup battery, and a Real-Time-Clock (RTC) including time counter and 32768Hz oscillator. The DC-DC converters are one low-voltage Step-Up operated in either Async-PFM or Sync-PWM, one current mode Sync Step-Up/Down (Buck-Boost), four Sync Step-Down, and one Asyn Step-Up for WLED driver. All power MOS are integrated. And pensation networks are built in. RT5035A/B uses I2C interface to set power-on and power-off timing, output voltage, and WLED current and dimming level, and also access RTC time counters and oscillator fine-tuning. RT5035A/B dedicate for CMOS image sensor application by providing one Sync Step-Down, one LDO, and one load switch. The RT5035A/B also provides rich protection functions include Over-Current Protection, Under-Voltage Protection, Over-Voltage Protection, Over Temperature Protection, and Over-Load Protection. RT5035A/B is available in WQFN-40L 5x5 package. Applications - Digital Cameras - Portable Instruments Features - CH1 Sync Step-Up in PWM Mode or Async Step-Up in Pulse Frequency Mode - CH2 Current Mode Sync Step-Up/Down - CH3/CH4/CH5 Current Mode Sync Step-Down - SW4 Load Switch with Soft-Start Inrush Control And Current Limit - CH6 Generic Low Voltage LDO for CMOS Sensor - CH7 WLED Driver in Async Step-Up Mode - Open LED Protection - 32 Dimming Levels - CH8 Generic Low Voltage LDO for Multiple Purpose Power Supply - CH9 Keep-Alive Low-Quiescent LDO - CH10 Sync Step-Down or Async Step-down in Pulse Frequency Mode for Memory Standby Mode Application - LV Sync Step-Down DC-DC Converter High Efficiency Up to 95% - 100% (Max) Duty Cycle for CH3, CH4, CH5 &CH10 - I2C Control Interface...