Overview
The TPSM84209RKHR is a highly integrated 4.5-V to 28-V input, 2.5-A synchronous step-down power module produced by Texas Instruments. This device combines a DC/DC converter, a shielded inductor, and passives into a low-profile QFN package, making it an excellent fit for power rails requiring up to 2.5 A of output current. The module is designed for small footprint applications and offers flexibility with many adjustable parameters to meet specific design requirements.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Input Voltage Range | 4.5 V to 28 V | V |
| Output Voltage Range | 1.2 V to 6 V | V |
| Output Current | Up to 2.5 A | A |
| Switching Frequency | 750 kHz | kHz |
| Package Type | 9-Pin QFN | |
| Package Size | 4.50 mm × 4.00 mm × 2 mm | mm |
| Operating Junction Temperature | –40°C to +125°C | °C |
| Operating Ambient Temperature | –40°C to +85°C | °C |
| Thermal Resistance (Junction-to-Ambient) | 32.7 °C/W | °C/W |
Key Features
- Advanced Eco-mode™ for improved light-load efficiency through pulse-skip operation
- Programmable Undervoltage Lockout (UVLO)
- Overtemperature thermal shutdown protection
- Overcurrent protection (hiccup mode)
- Safe prebias output start-up
- Integrated shielded inductor
- Meets EN55011 radiated EMI standards
- Fixed 5-ms soft start for controlled output voltage rise time
- Internal voltage reference with 2.5% accuracy over temperature
Applications
- Industrial and motor controls
- Automated test equipment
- Medical and imaging equipment
- High-density power systems
Q & A
- What is the input voltage range of the TPSM84209?
The input voltage range is from 4.5 V to 28 V.
- What is the maximum output current of the TPSM84209?
The maximum output current is up to 2.5 A.
- What is the switching frequency of the TPSM84209?
The switching frequency is fixed at 750 kHz.
- What type of package does the TPSM84209 come in?
The TPSM84209 comes in a 9-Pin QFN package.
- What are the operating temperature ranges for the TPSM84209?
The operating junction temperature range is –40°C to +125°C, and the operating ambient temperature range is –40°C to +85°C.
- Does the TPSM84209 have overcurrent protection?
- How does the Eco-mode™ feature work in the TPSM84209?
The Eco-mode™ feature improves light-load efficiency through pulse-skip operation, where the switching frequency decreases as the output current decreases.
- Can the undervoltage lockout (UVLO) threshold be adjusted?
- What is the thermal resistance (junction-to-ambient) of the TPSM84209?
The thermal resistance (junction-to-ambient) is 32.7 °C/W.
- Does the TPSM84209 meet any specific EMI standards?
