RT5024中文资料I2C Programmable Multi-Channel PMU with Battery Charger for CMOS DSC/DV数据手册Richtek规格书

描述 Description

The RT5024 is a complete power supply solution for digital still cameras and other hand held devices. The RT5024 is composed of 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 step-up 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 RT5024 has a WAKEUP impulse generation circuitry to monitor VIN or BAT installation event. To fulfill most of applications, the RT5024 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.

特性 Features

•Power Converter Unit
•CH2 LV Sync Step-Up/Down
•CH3/4 LV Sync Step-Down
•CH5 LV Sync Step-Down
•CH6 Low Input Power LDO
•CH7 WLED Driver in Either Sync Step-Up Operation or Current Regulator Operation
•CH8 Generic LDO
•CH9 Low Quiescent LDO with Reverse Leakage Prevention for RTC Power Supply
•Six Preset Power On/Off Sequences by One Pin SEQ
•All Power Switches Integrated with Internal Compensation
•Wake Up Impulse to Monitor BAT and VIN Plug-In
• Charger Unit
•Selectable Power Input Current Limit (0.1A / 0.5A / 1A / 1.5A)
•Battery Charging Current Control and Regulation Voltage Control
•Optimized Charge Rate via Thermal Feedback
•Charger Status Indicator
• Charger Type Detection
• I2C Control Interface : Support Fast Mode up to 400kb/s
• RoHS Compliant and Halogen Free  

应用 Application

• DSC Power Supply System
• Portable Instruments