TPSM82866A - 6A Step-Down Power Module | Texas Instruments
MPN: TPSM82866A ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.2 | $4.20 |
| 10 | $3.78 | $37.80 |
| 100 | $3.15 | $315.00 |
| 500 | $2.8 | $1,400.00 |
| 1,000 | $2.45 | $2,450.00 |
Drop-in alternatives for TPSM82866A — 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:
TPSM82866AA0HRDMR
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM82864A
✅ Drop-In📋 Reference alternative (not in catalog)
TPSM82866C
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →TPSM82816
⚡ Same Package✓ In Stock
$3.3 / Unit
View Datasheet →TPSM82822A
⚡ Same Package✓ In Stock
$1.26 / Unit
View Datasheet →ISL8200AMIRZ
⚡ Same Package📋 Reference alternative (not in catalog)
TPSM82866A Maximum Ratings & Electrical Characteristics
| Topology | Step-Down (Buck) Power Module |
| Input Voltage Range | 2.4 V to 5.5 V |
| Output Voltage Range | 0.6 V to 5.5 V |
| Output Current | 6 A |
| Number of Outputs | 1 |
| Isolation | Non-Isolated |
| Integrated Inductor | 220 nH (RDJ/RDM), 200 nH (RCF MagPack) |
| Package | 3.5 mm x 4.0 mm Thin Overmolded QFN / MagPack |
| Package Height | 1.8 mm (RDJ); higher for RDM/HRDM |
| Control Architecture | DCS-Control (peak current mode) |
| Mounting Type | Surface Mount |
| Features | Enable pin, Power-Good output, Soft-start |
| Applications | FPGA/CPU/ASIC core supply, optical modules, medical |
| Family Compatibility | Pin-to-pin and BOM-to-BOM compatible with TPSM82864A (RDJ/RDM) |
| RoHS Status | [DATA_NEEDED: RoHS status] |
| Operating Temperature | [DATA_NEEDED: operating temperature range] |
TPSM82866A 1.8 mm (rdj); higher for rdm/hrdm Pin Configuration Guide
Complete pinout information for TPSM82866A (1.8 mm (rdj); higher for rdm/hrdm package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for TPSM82866A.
Refer to the datasheet for full pin configuration.
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
TPSM82866A is suitable for 6 applications: FPGA Core Power Supply, CPU and ASIC Point-of-Load, Optical Modules, Medical Equipment, Industrial Automation, Test and Measurement Instruments.
FPGA Core Power Supply
The TPSM82866A delivers 6A at an adjustable 0.6V-5.5V output, matching the 0.85V-1.0V core rails of modern FPGAs. Its DCS-Control topology provides fast transient response for sudden logic switching loads, while the power-good output enables rail monitoring in multi-rail FPGA power trees. The integrated shielded inductor and 3.5mm x 4.0mm footprint keep the solution compact near the BGA power pins, and the 95% peak efficiency reduces heat in dense boards.
Recommended
CPU and ASIC Point-of-Load
Processor and ASIC core rails demand tight regulation and high transient current. The TPSM82866A sources 6A continuously with low output ripple from its integrated 220nH inductor, and its enable pin and soft-start support controlled power-up sequencing. Placed directly adjacent to the processor, the module minimizes parasitic impedance on the high-di/dt loop. The HRDMR package variant offers higher efficiency for thermally constrained compute modules.
Recommended
Optical Modules
Optical transceiver modules such as SFP/QSFP require compact, efficient point-of-load conversion within strict height envelopes. The TPSM82866A thin overmolded QFN stands about 1.8mm tall, fitting under standard module cages, while the 2.4V-5.5V input range accepts common 3.3V/5V module rails. The shielded inductor limits radiated EMI near sensitive laser driver and TIA circuitry, helping meet electromagnetic compatibility requirements in high-speed data links.
Recommended
Medical Equipment
Medical diagnostic and monitoring equipment benefits from the TPSM82866A's integration, which reduces component count and improves supply reliability. The adjustable 0.6V-5.5V output powers digital signal processors and sensor front ends from a 5V rail, and the power-good flag supports fault monitoring required in patient-connected devices. Its high efficiency minimizes self-heating in enclosed, fanless medical enclosures, and the small footprint suits portable diagnostic instruments.
Recommended
Industrial Automation
Industrial controllers and I/O modules use 5V or 3.3V distribution buses and need robust local point-of-load conversion. The TPSM82866A converts these rails to core voltages for embedded processors with 6A headroom for motor-control DSPs and communication ASICs. The integrated inductor simplifies layout in densely packed PLC boards, and the wide operating envelope supports noisy industrial power conditions. The enable pin permits energy-saving shutdown of idle function blocks.
Recommended
Test and Measurement Instruments
Bench instruments and automated test equipment require clean, stable local rails for high-speed converters and clock circuitry. The TPSM82866A's fixed-frequency DCS-Control operation and shielded inductor keep switching noise contained, while its 6A capability supports high-current ADC/DAC analog supply buses through post-regulation. The compact QFN footprint fits dense instrument mainboards, and the soft-start pin allows controlled ramp rates to avoid inrush during instrument power-up.
Recommended
Recommended Products Summary
Engineering reference data for TPSM82866A — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPSM82866AA0HRDMR | TPSM82864A | TPSM82866C |
|---|---|---|---|---|
| Package | 3.5x4.0mm thin overmolded QFN (RDJ) | RDM 3.5x4.0mm (taller) | RDJ/RDM 3.5x4.0mm - same | 3.5x4.0mm QFN module - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Renesas Electronics |
| Output Current | 6 A | 6 A | 4 A | 6 A |
| Input Voltage Range | 2.4 V to 5.5 V | 2.4 V to 5.5 V | 2.4 V to 5.5 V | [DATA_NEEDED] |
| Output Voltage Range | 0.6 V to 5.5 V | 0.6 V to 5.5 V | 0.6 V to 5.5 V | [DATA_NEEDED] |
| Integrated Inductor | 220 nH (RDJ) | 220 nH | 220 nH | [DATA_NEEDED] |
| Pin-to-Pin Compatibility | Reference | Yes (family compatible) | Yes (BOM-to-BOM) | No - layout change required |
| Efficiency Note | High efficiency (RDJ thin QFN) | Higher than SRDJR due to height | Similar topology, lower load | [DATA_NEEDED] |
Key Differentiators
- Higher current in same family footprint (vs TPSM82864A)
- Thinner package option (vs TPSM82866AA0HRDMR)
- Integrated shielded inductor and DCS-Control (vs ISL8200AMIRZ)
Design Notes
Provide solid ground planes and thermal vias under the module's exposed pad. Although the inductor is integrated, the VIN, VOUT, and GND traces still carry 6A - use wide copper (at least 2mm per ampere guideline) and multiple via stitching. Follow the TI datasheet (SLUSEF1B) layout example for optimum thermal and EMI performance.
At 6A with large VIN-VOUT differentials, losses concentrate in the module. The thin SRDJR package has limited thermal headroom; if the design dissipates more than ~2W, consider the taller TPSM82866AA0HRDMR variant, which TI states offers higher efficiency due to increased height. Verify junction temperature against the datasheet derating curves on your PCB stackup.
Do not confuse OPN suffixes: SRDJR (thin RDJ), HRDMR (taller RDM), and PRCFR (MagPack RCF) differ in height, inductor value (220nH vs 200nH), and EMI performance. Confirm the exact suffix against your height and EMI requirements before release. Ensure input capacitance per the datasheet BOM to maintain stability during load transients.
Compliance Information
Compliance details not present in provided web data; check TI product page quality/environmental section.
