Overview
The TPSM82864AA0SRDJR is a synchronous step-down converter power module produced by Texas Instruments. This module is part of the TPSM8286xA family and is designed for high-efficiency power conversion. It features the DCS-Control (Direct Control with Seamless transition into power save mode) topology, which ensures fast transient response and high efficiency across a wide range of load conditions. The module is available in the RDJ package, supporting thin designs with a height of 1.4 mm, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 2.4 to 5.5 | V |
| Output Current | 4 | A |
| Operating Frequency | 2.4 MHz | |
| Nominal Inductance | 220 nH | |
| Body Size | 3.50 mm × 4.00 mm | |
| Device Height | 1.4 mm | |
| Junction Temperature Range | –40 to 125 | °C |
| Output Voltage Accuracy | ±1% (fixed voltage operation) | |
| Efficiency | Up to 96% | % |
| Quiescent Current (IQ_VIN) | 4 to 10 | µA |
| Shutdown Current | 0.24 to 1 | µA |
Key Features
- High efficiency up to 96%
- Excellent thermal performance
- 1% output voltage accuracy in fixed voltage operation
- DCS-Control topology for fast transient response
- Integrated soft start to reduce inrush current
- Low dropout operation (100% duty cycle mode)
- Undervoltage lockout (UVLO) and thermal shutdown protection
- Configurable as either adjustable or fixed output voltage
- Power-good (PG) signal with 34-μs delay
Applications
The TPSM82864AA0SRDJR is suitable for a variety of applications requiring high-efficiency power conversion, including:
- Battery-powered devices to maximize battery life
- Portable electronics
- Industrial control systems
- Medical devices
- Automotive systems
Q & A
- What is the input voltage range of the TPSM82864AA0SRDJR?
The input voltage range is from 2.4 V to 5.5 V. - What is the maximum output current of the TPSM82864AA0SRDJR?
The maximum output current is 4 A. - What is the typical operating frequency of the TPSM82864AA0SRDJR?
The typical operating frequency is 2.4 MHz. - What is the nominal inductance used in the RDJ package?
The nominal inductance is 220 nH. - How accurate is the output voltage of the TPSM82864AA0SRDJR in fixed voltage operation?
The output voltage accuracy is ±1% in fixed voltage operation. - What is the efficiency of the TPSM82864AA0SRDJR?
The efficiency can be up to 96%. - Does the TPSM82864AA0SRDJR have thermal protection?
Yes, it has thermal shutdown protection. - Can the output voltage of the TPSM82864AA0SRDJR be adjusted?
Yes, the output voltage can be configured as either adjustable or fixed. - What is the purpose of the power-good (PG) signal?
The power-good signal indicates when the output voltage is within the specified range, with a 34-μs delay. - How does the TPSM82864AA0SRDJR handle undervoltage conditions?
The device has undervoltage lockout (UVLO) that disables the device when the input voltage is lower than the specified threshold.
