TPSM828303 - 3A Low-EMI Step-Down Module | Texas Instruments
MPN: TPSM828303 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.5 | $3.50 |
| 10 | $3.15 | $31.50 |
| 100 | $2.8 | $280.00 |
| 500 | $2.5 | $1,250.00 |
| 1,000 | $2.25 | $2,250.00 |
Drop-in alternatives for TPSM828303 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPSM828303A
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM828302
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM828301
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM82816
✅ Drop-In✓ In Stock
$2.88 / Unit
View Datasheet →TPSM82866C
✅ Drop-In✓ In Stock
$3.52 / Unit
View Datasheet →TPSM828303 Maximum Ratings & Electrical Characteristics
| Input Voltage Range | 2.25 V to 5.5 V |
| Output Voltage Range | 0.5 V to 4.5 V |
| Output Current | 3 A |
| Topology | Synchronous Step-Down |
| Control Architecture | DCS-Control |
| Feedback Voltage Accuracy | 1% |
| Integrated Inductor | Yes |
| EMI Reduction | Yes (CISPR 11/32 compliant) |
| Package | QFN (MagPack™) |
| Operating Temperature Range | -40°C to +125°C |
| Enable Pin | Yes |
| Power Good | Yes |
| Output Discharge | Yes |
| Overcurrent Protection | Yes |
| RoHS | Compliant |
TPSM828303 Pin Configuration
| Pin 1 | VIN — Input voltage supply |
| Pin 2 | GND — Ground |
| Pin 3 | EN — Enable pin (active high) |
| Pin 4 | VOUT — Output voltage |
| Pin 5 | FB — Feedback pin for output voltage setting |
| Pin 6 | PG — Power good indicator |
| Pin 7 | GND — Ground |
| Pin 8 | VIN — Input voltage supply |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPSM828303 is suitable for 6 applications: FPGA Power Supply, Optical Module Power, Test and Measurement, Portable Devices, Industrial Automation, Networking Equipment.
FPGA Power Supply
The TPSM828303 provides a low-noise, high-efficiency 3A supply for FPGA cores and I/O. Its integrated inductor and low-EMI design minimize interference with sensitive logic, while the 1% accuracy ensures stable core voltage. The module's small QFN package saves board space, and the enable pin allows sequenced power-up.
Recommended
Optical Module Power
In optical transceivers, the TPSM828303 powers laser drivers and control circuits. Its low-EMI characteristics are critical to avoid interference with high-speed optical signals. The module's wide input range (2.25V-5.5V) accommodates various supply rails, and the integrated inductor simplifies layout in compact SFP/QSFP modules.
Recommended
Test and Measurement
The TPSM828303 is ideal for powering precision analog circuits in test equipment. Its low output noise and high PSRR ensure clean supply rails for ADCs and DACs. The module's fast transient response maintains voltage stability during dynamic loads, and the power good signal aids system monitoring.
Recommended
Portable Devices
For battery-powered devices, the TPSM828303 offers high efficiency across load ranges, extending battery life. Its small footprint and integrated inductor reduce PCB area, ideal for compact designs. The automatic PWM/PFM transition ensures efficiency at light loads, and the enable pin supports power saving modes.
Recommended
Industrial Automation
In industrial control systems, the TPSM828303 provides reliable power for microcontrollers and sensors. Its wide input range handles 5V rails, and the -40°C to +125°C temperature range suits harsh environments. The module's overcurrent protection and thermal shutdown enhance system robustness.
Recommended
Networking Equipment
The TPSM828303 powers network processors and switch ICs in routers and switches. Its low-EMI design helps meet EMC standards, and the integrated inductor reduces board space in dense layouts. The module's high efficiency reduces heat dissipation, improving reliability in enclosed equipment.
Recommended
Recommended Products Summary
Engineering reference data for TPSM828303 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPSM828303A | TPSM828302 | TPSM828301 |
|---|---|---|---|---|
| Package | QFN (MagPack™) | QFN (MagPack™) | QFN (MagPack™) | QFN (MagPack™) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Current | 3 A | 3 A | 2 A | 1 A |
| Input Voltage Range | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V | 2.25V to 5.5V |
| Output Voltage Range | 0.5V to 4.5V | 0.5V to 4.5V | 0.5V to 4.5V | 0.5V to 4.5V |
| Integrated Inductor | Yes | Yes | Yes | Yes |
| EMI Reduction | Yes (CISPR 11/32) | Yes (CISPR 11/32) | Yes (CISPR 11/32) | Yes (CISPR 11/32) |
| Enable Pin | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated inductor reduces EMI (vs TPSM828302)
- Higher output current (vs TPSM828302)
- Pin-to-pin compatible family (vs TPSM828301)
Design Notes
Place input and output capacitors close to the module pins to minimize parasitic inductance. Use a 10µF ceramic capacitor on the input and a 22µF ceramic capacitor on the output as recommended in the datasheet. Ensure a solid ground plane for optimal thermal and EMI performance.
The TPSM828303's QFN package with MagPack™ technology provides good thermal performance. For high current operation, ensure adequate copper area on the PCB to dissipate heat. The thermal pad should be connected to a large ground plane to improve heat spreading.
Do not exceed the maximum input voltage of 5.5V. Ensure the feedback resistors are 1% tolerance to maintain output voltage accuracy. The enable pin must be pulled high for operation; do not leave it floating. Also, verify the power good signal timing for proper system sequencing.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified; use TPSM828303A-Q1 for automotive.
