Overview
The TPS650231RSBT from Texas Instruments is a highly integrated power management IC (PMIC) designed for systems powered by a single Li-Ion or Li-Polymer cell. This device is particularly suited for applications requiring multiple power rails, such as processor-based systems, portable media players, and other battery-powered devices. The TPS650231RSBT provides a comprehensive power management solution with high efficiency and dynamic voltage scaling capabilities.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Step-Down Converters | 3 |
| Step-Down Converter 1 (VDCDC1) | 1.2 A, up to 95% efficient |
| Step-Down Converter 2 (VDCDC2) | 0.8 A, 92% efficient |
| Step-Down Converter 3 (VDCDC3) | 30 mA for Real-Time Clock (VRTC) |
| General-Purpose LDOs | 2 × 200 mA, input voltage range: 1.5 V to 6.5 V |
| Package Options | 40-pin VQFN (RSB), 49-ball DSBGA (YFF) |
| Operating Temperature | –40°C to +85°C |
| Serial Interface | I2C compatible, up to 400 kHz |
Key Features
- Highly efficient step-down converters with dynamic voltage management for processor core, peripheral, I/O, and memory rails.
- Two general-purpose 200-mA LDO voltage regulators with externally adjustable output voltages.
- Battery backup functionality and externally adjustable reset delay time.
- I2C-compatible serial interface for dynamic voltage scaling, interrupt masking, and LDO control.
- Low-power mode for all step-down converters at light loads to maximize efficiency.
- Preselectable LDO voltage using two digital input pins.
Applications
- Portable media players and other handheld devices.
- Processor-based systems requiring multiple power rails.
- Battery-powered consumer electronics.
- Embedded systems and IoT devices.
Q & A
- What is the primary function of the TPS650231RSBT?
The TPS650231RSBT is a power management IC designed to provide multiple power rails for systems powered by a single Li-Ion or Li-Polymer cell. - How many step-down converters does the TPS650231RSBT have?
The device has three step-down converters. - What are the current ratings of the step-down converters?
The step-down converters are rated at 1.2 A, 0.8 A, and 30 mA respectively. - What is the input voltage range for the general-purpose LDOs?
The input voltage range for the LDOs is from 1.5 V to 6.5 V. - What is the operating temperature range of the TPS650231RSBT?
The operating temperature range is –40°C to +85°C. - What type of serial interface does the TPS650231RSBT support?
The device supports an I2C-compatible serial interface up to 400 kHz. - Can the output voltage of the LDOs be adjusted?
Yes, the output voltage of the LDOs can be preselected using two digital input pins. - Does the TPS650231RSBT support dynamic voltage scaling?
Yes, the device supports dynamic voltage scaling through the serial interface. - What are the package options for the TPS650231RSBT?
The device is available in 40-pin VQFN (RSB) and 49-ball DSBGA (YFF) packages. - What is the purpose of the battery backup functionality?
The battery backup functionality ensures that critical components remain powered during battery replacement or low-battery conditions.
