Overview
The TPS65133DPDR from Texas Instruments is a dual-output power supply integrated circuit designed to generate ±5V supply rails from an input voltage range of 2.9V to 5.0V. This device is particularly suited for applications requiring high efficiency and stability, such as LCD bias, AMOLED displays, operational amplifier supplies, and general ±5V power supplies. The TPS65133 features a boost converter for the positive output and an inverting buck-boost converter for the negative output, each capable of supplying up to 250mA of current. The device operates with high efficiency, typically over 90%, and includes features such as short-circuit protection, thermal shutdown, and excellent line and load transient response.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.9 - 5.0 | V |
| Positive Output Voltage (VPOS) | 5.0 | V |
| Negative Output Voltage (VNEG) | -5.0 | V |
| Output Current Capability | 250 | mA |
| Output Voltage Accuracy | ±1% | |
| Efficiency | >90% | % |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | WSON (12) | |
| Package Size | 3.00 mm × 3.00 mm | |
| Thermal Shutdown Temperature | 135 | °C |
Key Features
- Fixed ±5V output voltages with ±1% accuracy
- High efficiency (>90%) for most applications
- Independent converter operation allowing 100% mismatch between positive and negative output currents
- Short-circuit protection and thermal shutdown for enhanced reliability
- Excellent line and load transient response
- Operates in continuous conduction mode (CCM) to minimize output noise
- Boost converter able to operate with input supply voltages close to 5.0V in diode mode
- Active discharge during shutdown to quickly discharge the output capacitors
Applications
- LCD bias and AMOLED displays
- Operational amplifier supplies
- Headphone amplifier supplies
- Sensor front-end supplies
- Data acquisition supplies
- General ±5V power supplies
Q & A
- What is the input voltage range of the TPS65133DPDR?
The input voltage range is 2.9V to 5.0V. - What are the fixed output voltages of the TPS65133DPDR?
The fixed output voltages are ±5V. - What is the maximum output current capability of each output?
Each output can supply up to 250mA of current. - What is the typical efficiency of the TPS65133DPDR?
The typical efficiency is over 90% for most applications. - Does the TPS65133DPDR have short-circuit protection?
Yes, it has short-circuit protection for both the positive and negative output converters. - What is the thermal shutdown temperature of the TPS65133DPDR?
The thermal shutdown temperature is typically 135°C. - What is the package type and size of the TPS65133DPDR?
The package type is WSON (12) and the size is 3.00 mm × 3.00 mm. - Can the TPS65133DPDR operate with input supply voltages close to 5.0V?
Yes, it can operate in diode mode when the input supply voltage is close to 5.0V. - How does the TPS65133DPDR handle shutdown?
During shutdown, the device actively discharges the output capacitors until the input supply voltage is too low to support its operation. - What are some common applications of the TPS65133DPDR?
Common applications include LCD bias, AMOLED displays, operational amplifier supplies, and general ±5V power supplies.
