Overview
The TPS650231RSBR is an integrated power management IC (PMIC) designed by Texas Instruments for applications powered by a single Li-Ion or Li-Polymer cell. This device is tailored to provide multiple power rails, making it ideal for processor-based systems that require efficient and dynamic power management. The TPS650231 integrates three highly efficient step-down converters and two general-purpose LDO voltage regulators, along with various control and monitoring features.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package | 40-Pin WQFN (RSB) or 49-Ball DSBGA (YFF) | |
| Operating Temperature Range | -40 to 85 | °C |
| Step-Down Converter 1 (VDCDC1) | 1.7 A, 90% Efficient | |
| Step-Down Converter 2 (VDCDC2) | 1.2 A, up to 95% Efficient | |
| Step-Down Converter 3 (VDCDC3) | 0.8 A, 92% Efficient | |
| LDO for Real-Time Clock (VRTC) | 30 mA | |
| General-Purpose LDOs | 2 × 200 mA | |
| Quiescent Current | 85 µA | |
| Thermal Shutdown Protection | Yes | |
| I2C™-Compatible Serial Interface | Up to 400 kHz |
Key Features
- Three highly efficient step-down converters for core voltage, system voltage, and memory voltage.
- Dynamic voltage management for processor core through serial interface.
- Two general-purpose, 200-mA LDO voltage regulators with digitally settable output voltages.
- 30-mA LDO and switch for real-time clock (VRTC).
- Battery backup functionality.
- Externally adjustable reset delay time.
- Separate enable pins for inductive converters.
- I2C™-compatible serial interface for dynamic voltage scaling and LDO control.
- Low-ripple PFM mode for reduced noise.
- Thermal shutdown protection.
Applications
- Smartphones
- Netbooks and Mobile Internet Devices (MIDs)
- Portable media players
- Other battery-powered, processor-based systems requiring multiple power rails.
Q & A
- What is the primary function of the TPS650231RSBR?
The TPS650231RSBR is an integrated power management IC designed to provide multiple power rails for processor-based systems powered by a single Li-Ion or Li-Polymer cell.
- How many step-down converters does the TPS650231RSBR have?
The device has three step-down converters: VDCDC1, VDCDC2, and VDCDC3.
- What are the efficiencies of the step-down converters?
VDCDC1 is 90% efficient, VDCDC2 is up to 95% efficient, and VDCDC3 is 92% efficient.
- What is the quiescent current of the TPS650231RSBR?
The quiescent current is 85 µA.
- Does the TPS650231RSBR support I2C communication?
Yes, it has an I2C™-compatible serial interface that supports transfers up to 400 kHz.
- What are the package options for the TPS650231RSBR?
The device is available in a 40-pin WQFN (RSB) package and a 49-ball DSBGA (YFF) package.
- What is the operating temperature range of the TPS650231RSBR?
The operating temperature range is -40°C to 85°C.
- Does the TPS650231RSBR have thermal shutdown protection?
Yes, it includes thermal shutdown protection.
- How can the LDO output voltages be set?
The LDO output voltages can be digitally set using the DEFLDO1 and DEFLDO2 pins.
- What is the purpose of the VRTC LDO?
The VRTC LDO is a 30-mA LDO and switch for the real-time clock.
