TPSM828303 - 3A Low-EMI Step-Down Module | Texas Instruments
MPN: TPSM828303 β Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.1 | $2.10 |
| 10 | $1.89 | $18.90 |
| 100 | $1.55 | $155.00 |
| 500 | $1.32 | $660.00 |
| 1,000 | $1.1 | $1,100.00 |
Drop-in alternatives for TPSM828303 β same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool β Select alternative parts for side-by-side comparison:
TPSM828302ARDSR
β Drop-Inπ Reference alternative (not in catalog)
TPSM828301ARDSR
β Drop-Inπ Reference alternative (not in catalog)
TPSM82823
β Drop-Inπ Reference alternative (not in catalog)
TPSM82813SILR
β‘ Same Packageπ Reference alternative (not in catalog)
TPS628303
β‘ Same Packageπ Reference alternative (not in catalog)
TPSM828303 Maximum Ratings & Electrical Characteristics
| Output Current | 3 A |
| Input Voltage Range | 2.25 V to 5.5 V |
| Output Voltage Range | 0.5 V to 4.5 V |
| Topology | Synchronous step-down (buck) module, DCS-Control |
| Feedback Voltage Accuracy | 1% over full operating range |
| Number of Outputs | 1 |
| Inductor | Integrated (MagPack technology on APVC variants) |
| EMI Features | Integrated EMI reduction, low-EMI design |
| Light Load Mode | Automatic PWM/PFM transition, Power Save Mode |
| Control Features | Enable pin, Power good, Output discharge, Forced PWM |
| Protection | Overcurrent protection, thermal shutdown |
| Operating Temperature | -40C to +125C (junction) |
| Package | QFN-FCMOD-9 (3x3 mm) / QFN with MagPack |
| Mounting Type | Surface Mount |
| Pin Compatibility | Pin-to-pin compatible with TPSM828301/302 family |
| Max Output Capacitance | 200 uF |
| RoHS Status | Compliant |
TPSM828303 Pin Configuration
| Pin 1 | VIN β Input supply, 2.25V to 5.5V |
| Pin 2 | GND β Ground |
| Pin 3 | EN β Enable input for power sequencing |
| Pin 4 | SS/TR β Soft start / tracking |
| Pin 5 | VOS β Feedback / output voltage sense |
| Pin 6 | SW/VOUT β Switch node / regulated output (integrated inductor) |
| Pin 7 | PG β Power good open-drain output |
| Pin 8 | MODE β Mode selection (PWM/PFM) |
| Pin 9 | GND (EP) β Exposed pad, ground and thermal path |
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 / ASIC Point-of-Load Power, Optical Module Power Supply, Test and Measurement Equipment, Industrial Automation Systems, Portable and Battery-Powered Devices, Low-EMI RF and Communication Rails.
FPGA / ASIC Point-of-Load Power
The TPSM828303 fits FPGA and ASIC POL rails because its 3A rating, 0.5V-4.5V adjustable output, and DCS-Control topology deliver sub-microsecond transient response on core rails with minimal output capacitance. The 1% feedback accuracy and power good output support reliable multi-rail sequencing via the EN pin. Placed next to the load, the integrated inductor removes switch-node layout sensitivity and keeps radiated EMI low near high-speed digital circuits.
Recommended
Optical Module Power Supply
Optical transceiver modules demand compact, low-EMI supplies since the TPSM828303's 3x3mm QFN footprint fits tight module housings, while integrated EMI reduction prevents interference with sensitive receiver circuitry. The 2.25V-5.5V input accepts common 3.3V module rails, and automatic PWM/PFM maintains efficiency at the light loads typical of standby modes. The MagPack shielded inductor on APVC variants minimizes radiated emissions in metal-constrained enclosures.
Recommended
Test and Measurement Equipment
Bench instruments and measurement cards benefit from the TPSM828303's fast DCS-Control transient response when powering variable digital loads, and its low-EMI design keeps switching artifacts out of precision analog front ends. The 3A output covers processor and memory rails, while forced-PWM mode provides fixed-frequency, low-ripple operation needed for deterministic noise performance. Output discharge ensures clean power cycling between measurements.
Recommended
Industrial Automation Systems
In PLC I/O modules and industrial sensors, the TPSM828303 converts 5V or 3.3V intermediate buses to processor and communication rails with its -40C to +125C junction range covering harsh environments. Overcurrent protection and thermal shutdown improve field reliability, while the pin-to-pin compatible family (1A/2A/3A) lets one layout serve multiple current requirements. Integrated EMI reduction aids CISPR 11 compliance for factory equipment.
Recommended
Portable and Battery-Powered Devices
For battery-operated designs, the TPSM828303's automatic PWM/PFM Power Save mode sustains high efficiency at light loads, extending runtime, while the small 3x3mm integrated-inductor module shrinks solution height and board area. The 2.25V minimum input supports single-cell Li-ion and multi-cell alkaline configurations, and the low-noise output suits audio and RF sections. Power good and enable pins simplify system power management.
Recommended
Low-EMI RF and Communication Rails
RF transceivers, PLLs, and VCOs require exceptionally clean supplies; the TPSM828303's integrated EMI reduction, MagPack magnetic shielding, and forced-PWM low-ripple mode minimize switching spurs that would degrade phase noise. Pairing the module with a low-noise LDO for the final VCO rail combines high conversion efficiency with ultra-low output noise. The compact footprint fits dense RF boards with constrained keep-out areas.
Recommended
Recommended Products Summary
Engineering reference data for TPSM828303 β comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPSM828302ARDSR | TPSM828301ARDSR | TPSM82823 | TPSM82813SILR | TPS628303 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | QFN-FCMOD-9 (3x3 mm) / MagPack | QFN-FCMOD-9 (3x3 mm) - same | QFN-FCMOD-9 (3x3 mm) - same | QFN module - verify footprint | QFN module 3x3 - similar | QFN, external inductor required |
| Output Current | 3 A | 2 A | 1 A | 3 A | 3 A | 3 A |
| Input Voltage Range | 2.25 V to 5.5 V | 2.25 V to 5.5 V | 2.25 V to 5.5 V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Output Voltage Range | 0.5 V to 4.5 V | 0.5 V to 4.5 V | 0.5 V to 4.5 V | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] |
| Feedback Accuracy | 1% | 1% | 1% | 1% | [DATA_NEEDED] | [DATA_NEEDED] |
| Inductor | Integrated (MagPack on APVC) | Integrated | Integrated | Integrated | Integrated | External |
| Low-EMI Features | Yes (EMI reduction + MagPack shielding) | Yes | Yes | Yes | Standard POL | Standard |
| Topology / Control | DCS-Control | DCS-Control | DCS-Control | DCS-Control | [DATA_NEEDED] | DCS-Control |
Key Differentiators
- Highest current in pin-compatible family (vs TPSM828302ARDSR)
- MagPack integrated inductor option (vs TPS628303)
- Purpose-built EMI reduction (vs TPSM82813SILR)
Design Notes
Place the input capacitor (typically 10uF ceramic) within 2mm of the VIN pin with a solid via to the ground plane. Although the inductor is integrated, the input hot loop still dominates conducted EMI - minimize its area. The exposed pad must be soldered to a grounded thermal array (4-6 vias) to achieve the datasheet thermal performance.
The DCS-Control topology is stable with output capacitors up to 200uF; use 22uF as a typical starting point for fast transient rails. For lowest output ripple in noise-sensitive designs, force PWM mode instead of automatic PFM, trading light-load efficiency for fixed-frequency operation.
Use the SS/TR pin to control startup slew when powering FPGAs or processors with inrush limits. Do not exceed 5.5V input - transient spikes above this trigger absolute maximum stress. When substituting family members (1A/2A/3A) on one layout, verify output capacitance meets the smaller parts' stability requirements.
Compliance Information
RoHS compliant per TI product page. AEC-Q100 qualification status not found in provided data - verify on TI.com if automotive use is intended.
