TPS54328DDA

TPS54328DDA is TI’s 4-A, 28-V input buck regulator in the DDA package, part of the SIMPLE SWITCHER family. It converts a higher input voltage (up to 28 V) to a lower, stable output for processors, FPGAs, and other digital loads. The device integrates the main switch and control circuitry; external components (inductor, Schottky diode for asynchronous operation, input/output capacitors, and a feedback network) complete the regulator.
Key points:
- Input range up to 28 V; output current up to ~4 A
- Adjustable output via feedback resistors (0.8 V reference)
- High efficiency with fixed switching frequency; protects against short-circuit and overheating
- Features include enable, soft-start, and overcurrent/thermal protection
- DDA package; check datasheet for exact footprint and pinout
Typical uses: automotive and industrial power rails, telecom equipment, and other systems needing a compact, efficient 4-A buck converter. For precise specs, pinout, and external component values, refer to the TPS54328DDA data sheet and TI product page.

TPS54328DDA Features
- Wide input range: 4.5 V to 28 V
- Output current: up to 3 A
- High efficiency: up to ~95% (depends on conditions)
- Switching frequency: ~650 kHz (typ)
- Fully integrated high-side switch (no external FET required)
- Current-mode control for fast transient response
- Enable pin to turn the device on/off (UVLO protection)
- Soft-start to limit inrush current
- Protections: overcurrent/short-circuit protection, thermal shutdown
- Overvoltage/undervoltage protection and safe start-up behavior
- Adjustable output via external feedback network (fixed-output variants also available)
- Wide operating temperature range and robust for automotive/industrial use
- Packaging: DDA (VQFN/lead-frame) with exposed pad
Note: Features may vary slightly by variant; consult the datasheet for exact electrical data and pinout.

HTSSOP-28 (28-pin) package, suffix DDA (with exposed pad).

- Pin count: 8 pins (DDA package)
- Function: High-efficiency step-down (buck) DC-DC regulator with an integrated high-side MOSFET. It accepts input up to 28 V and delivers a lower regulated output (up to ~3 A), using an external feedback network to set Vout and an EN pin to enable/disable. Includes typical protections (UVLO, current limit, thermal).

- Manufacturer: Texas Instruments (TI).
- What kind of company: TI is an American multinational semiconductor company that designs and manufactures analog and embedded-processing integrated circuits (ICs), including power management, processors, sensors, and related products.

TPS54328DDA is a wide-input (up to 28 V), 3-A step-down regulator. Typical applications:
- Automotive power rails (12–24 V)
- Industrial/control equipment and motor-drive auxiliaries
- Distributed rails for microprocessors, FPGAs, and DSPs
- Telecom/networking power supplies
- Consumer electronics with wide input sources
- Sensor/instrumentation power rails