TPS82084SILR, TI MicroSiP™ Buck Power Module with Integrated Inductor

> One sentence summary: 2A synchronous Buck DC-DC power module with integrated inductor and MOSFETs. Only input and output capacitors are required externally to simplify power design, manufactured by Texas Instruments.

Key Specifications

- Brand: TI (Texas Instruments)

- Topology: Synchronous step-down Buck, maximum output current 2A

- Input Voltage (Vin): 2.5V ~ 6V

- Output Voltage (Vout): Adjustable from 0.8V up to Vin (configured via external resistor divider)

- Switching Frequency: Approx. 2.4MHz (2.0~2.6MHz)

- Peak Efficiency: 95%

- Quiescent Current: Typical 17μA (light-load power save mode)

- Operating Temperature: -40℃ ~ +125℃

- Package: SIL (MicroSiP), 8-pin. Dimensions: 2.8×3.0×1.3mm, ultra-thin compact module

- Protections: Hiccup short-circuit protection, thermal shutdown, undervoltage lockout, output discharge

- Functional Pins: EN enable pin, PG Power Good signal, FB feedback pin

Functions & Features

1. DC-DC Step-Down: Converts 2.5~6V input down to the required low voltage (common values: 1.0V, 1.2V, 1.8V, 3.3V) to power MCUs, FPGAs and sensors.

2. Integrated Inductor: Key advantage! Ordinary Buck ICs require external inductors, while this module has the inductor packaged inside. It reduces BOM count, saves PCB space and eases EMI debugging.

3. DCS-Control: Delivers excellent load transient response and low output ripple, suitable for RF and high-speed digital circuits.

4. Light-Load Power Save Mode: Automatically reduces frequency at low current for low static power consumption, ideal for battery-powered devices.

5. 100% Duty Cycle: Low-dropout operation to maintain regulation when input voltage is close to output voltage.

6. PG Power Good Signal: Indicates stable power after power-up for main controller power-sequencing control; EN pin enables or disables the power supply.

 Applications

- Single-board computers, core boards, FPGA/MCU core power supply

- SSD solid-state drives, optical modules, radar modules

- Portable instruments, compact industrial acquisition boards

- IoT and wireless RF module power supply

- Small medical devices and sensor modules

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> Important note: Input voltage range is limited to 2.5~6V. **Cannot connect to 12V/24V**, a common pitfall during customer part selection!

Key Takeaways

1. TPS82084 = 2A; sibling part TPS82085SILR = 3A, pin-to-pin compatible. They are frequently selected together.

2. MicroSiP module with built-in inductor, minimal BOM, perfect for compact PCB designs.

3. Maximum input voltage is only 6V. It is used for buck conversion from 5V/3.3V bus, **not directly for automotive 12V**.

4. Adjustable output, commonly used to supply 1.2V / 1.8V core power for main ICs.

5. Temperature range -40~125℃, industrial grade. Not automotive qualified (no AEC-Q100). TI automotive power parts should be used for automotive projects.