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7+3 Channel DC-DC Converters with RTC and I2C Interface

RT5035C/RT5035D

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The RT5035C/D 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. The RT5035C/D 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. The RT5035C/D dedicate for CMOS image sensor application by providing one Sync Step-Down, one LDO, and one load switch. The RT5035C/D also provides rich protection functions include Over-Current Protection, Under-Voltage Protection, Over-Voltage Protection, Over-Temperature Protection, and Over-Load Protection. The RT5035C/D is available in WQFN-40L 5x5 package.

Applications

  • Digital Cameras
  • Portable Instruments
Key Spec.
RT5035C RT5035D
Status Active Active
Vin (min) (V) 2.6 1.7
Vin (max) (V) 5.5 5.5
Number of Channels 10 10
Number of Buck Converters 4 4
Number of Boost Converters 2 2
Number of LED Drivers 1 1
Number of LDO Regulators 3 3
Application Portable Device Portable Device
Features Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;I2C;Internal Compensation;OCP;OVP;Power Good;UVP Current Mode Control;Cycle-by-Cycle Current Limit;Enable Input;External Synchronization;I2C;Internal Compensation;OCP;OVP;Power Good;UVP
Package Type WQFN5x5-40 WQFN5x5-40
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 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
Datasheet
TitleLast UpdateShareDownload
7+3 Channel DC-DC Converters with RTC and I2C Interface2018/04/20
Technical Documents
TitleLast UpdateShareDownload
Richtek Selection Guide [Oct., 2020]2020/12/30
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