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RT5035B Datasheet(PDF) 1 Page - Richtek Technology Corporation |
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RT5035B Datasheet(HTML) 1 Page - Richtek Technology Corporation |
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1 / 44 page  RT5035A/B Copyright © 2017 Richtek Technology Corporation. All rights reserved. is a registered trademark of Richtek Technology Corporation. DS5035A/B-02 February 2017 www.richtek.com 1 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 compensation 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 I 2C Control Interface to Program Enable, Power On/Off Delay Time, Output Regulated Voltage, WLED Dimming Current RTC Timer And Oscillator Fixed 2MHz Switching Frequency for CH1, CH3, CH4, CH5, CH10 Fixed 1MHz Switching Frequency for CH2, CH7 Simplified Application Circuit RT5035A/B VOUT1 VOUT2 VOUT3 VOUT5 VOUT4 SWO LX7 VOUT8 RTCPWR VOUT10 BAT I 2 C Control SCL EN SYNC VDDM SDA C32K GND VOUT6 RESET Step-Up for Motor Step-Up/Down for I/O Step-Down for Core Step-Down for CMOS Load Switch for CMOS Step-Down for CMOS LDO for CMOS Step-Up for LED Backlight LDO for HDMI LDO for RTC Step-Down for Memory |
Similar Part No. - RT5035B |
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Similar Description - RT5035B |
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