Texas Instruments

TPSM82866A - 6A Step-Down Power Module | Texas Instruments

Name: TPSM82866A
Brand: Texas Instruments
Price: 2.88 USD
Availability: InStock

MPN: TPSM82866A ✓ Active

In Stock Ships in 1-3 business days

2.4 V to 5.5 V Vdss 6 A Id B0QFN (23) 3.5 mm x 4.0 mm Package [DATA_NEEDED: switching frequency] Speed

From $2.88 USD / Unit

MOQ: 1 |

Price updated: 2026-08-25

Volume Pricing

Qty	Unit Price	Extended
1	$4.5	$4.50
10	$4.05	$40.50
100	$3.6	$360.00
500	$3.24	$1,620.00
1,000	$2.88	$2,880.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

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:

TPSM82864A

✅ Drop-In

📦 B0QFN (23) 3.5 mm x 4.0 mm

4A output current instead of 6A, pin-to-pin compatible

📋 Reference alternative (not in catalog)

TPSM82866AA0HRDMR

✅ Drop-In

📦 RDM (thin overmolded QFN)

Higher efficiency due to increased height, same electrical specs

📋 Reference alternative (not in catalog)

TPSM82866AA0PRCFR

✅ Drop-In

📦 RCF (MagPack)

MagPack package with 200nH inductor and better EMI shielding

📋 Reference alternative (not in catalog)

TPSM82866C

✅ Drop-In

Texas Instruments

📦 B0QFN (23) 3.5 mm x 4.0 mm

2.4 V to 5.5 V · 0.8 V to 3.35 V · 6 A · [DATA_NEEDED: switching frequency] · 200 nH shielded · I2C · MagPack (RCF) 2.3 mm x 3 mm · Surface Mount

✓ In Stock

$3.52 / Unit

View Datasheet →

ISL8200AMIRZ

✅ Drop-In

📦 QFN (similar footprint)

Cross-brand alternative, 6A module, verify pin compatibility

📋 Reference alternative (not in catalog)

TPSM82866A Maximum Ratings & Electrical Characteristics

Input Voltage Range	2.4 V to 5.5 V
Output Voltage Range	0.6 V to 5.5 V
Output Current	6 A
Integrated Inductor	220 nH (RDJ/RDM), 200 nH (RCF)
Package	B0QFN (23) 3.5 mm x 4.0 mm
Switching Frequency	[DATA_NEEDED: switching frequency]
Efficiency	Up to 95%
Quiescent Current	[DATA_NEEDED: quiescent current]
Operating Temperature	[DATA_NEEDED: operating temperature range]
Mounting Type	Surface Mount
RoHS Status	Compliant
MSL Level	[DATA_NEEDED: MSL level]
Control Architecture	Fixed-frequency peak-current-mode
Features	Power-good, enable, soft-start
EMI Performance	Integrated shielded inductor

TPSM82866A Pin Configuration

Pin 1	VIN — Input voltage supply
Pin 2	GND — Ground
Pin 3	EN — Enable pin
Pin 4	VOUT — Output voltage
Pin 5	PG — Power good indicator
Pin 6	FB — Feedback pin
Pin 7	SS — Soft-start pin
Pin 8	GND — Ground

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 Supply, CPU Power Supply, Optical Modules, Medical Devices, Industrial Equipment, Networking Equipment.

🔧

FPGA Core Supply

The TPSM82866A provides a stable 6A core supply for FPGAs, with output voltage adjustable down to 0.6V. Its integrated inductor and high efficiency minimize board space and thermal dissipation, making it ideal for compact FPGA designs. The module's fast transient response ensures stable operation during logic switching, and the power-good signal simplifies power sequencing.

Recommended

🖥️

CPU Power Supply

For CPU power, the TPSM82866A delivers up to 6A with high efficiency, reducing heat in tight enclosures. Its wide input range (2.4V to 5.5V) supports various system rails, and the adjustable output allows precise voltage scaling. The integrated inductor simplifies layout, and the module's small footprint is ideal for space-constrained designs.

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AM5728BABCXA · Texas Instruments TPS62130RGTR · Texas Instruments

🌐

Optical Modules

The TPSM82866A is well-suited for optical modules, providing clean, efficient power for laser drivers and transceivers. Its low EMI, thanks to the integrated shielded inductor, is critical for sensitive optical signals. The module's small size and high efficiency help meet the stringent power budgets of optical communication systems.

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TDP142IRNQT · Texas Instruments TPS61086DRCR · Texas Instruments

💊

Medical Devices

In medical devices, the TPSM82866A provides reliable, efficient power for sensors and processors. Its high efficiency reduces heat, which is crucial for patient safety. The integrated inductor minimizes EMI, reducing interference with sensitive medical electronics. The module's small footprint enables compact device designs.

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ADS1115IDGSR · Texas Instruments TMP117 · Texas Instruments

🏭

Industrial Equipment

The TPSM82866A is ideal for industrial equipment, offering robust performance in harsh environments. Its wide input range and high output current support various industrial loads. The integrated inductor and high efficiency reduce thermal stress, ensuring long-term reliability. The module's small size allows for compact control systems.

Recommended

TCA9548APWR · Texas Instruments ISO7721BDWR · Texas Instruments

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Networking Equipment

For networking equipment, the TPSM82866A provides efficient power for switches and routers. Its high efficiency reduces cooling requirements, and the low EMI ensures signal integrity. The module's small footprint is ideal for high-density PCB layouts. The adjustable output voltage supports various logic levels.

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DP83848KSQ/NOPB · Texas Instruments TUSB321RWBR · Texas Instruments

Recommended Products Summary

What is the input voltage range of TPSM82866A?

The TPSM82866A operates with an input voltage range of 2.4V to 5.5V. According to the TI datasheet SLUSEF1B, this wide range supports various power rails, including 3.3V and 5V systems. The output can be adjusted from 0.6V to 5.5V, making it versatile for different load requirements.

What is the output current capability of TPSM82866A?

The TPSM82866A can deliver up to 6A of continuous output current. This makes it suitable for powering high-current loads such as FPGAs, CPUs, and ASICs. The integrated inductor and synchronous buck converter ensure high efficiency, reducing thermal stress in compact designs.

What is the difference between TPSM82866A and TPSM82864A?

The TPSM82866A provides 6A output current, while the TPSM82864A provides 4A. Both are pin-to-pin and BOM-to-BOM compatible in the RDJ and RDM packages, according to the TI datasheet. The TPSM82866A is suitable for higher power requirements, while the TPSM82864A may be more cost-effective for lower current applications.

What is the difference between TPSM82866AA0SRDJR and TPSM82866AA0HRDMR?

The TPSM82866AA0SRDJR and TPSM82866AA0HRDMR are package variants of the TPSM82866A. According to TI E2E forum, the 'S' variant uses the RDJ package (thin overmolded QFN) while the 'H' variant uses the RDM package (higher height). The RDM package offers higher efficiency due to increased height, but both are electrically similar.

What is the MagPack package and how does it differ?

The MagPack package (RCF) is a variant of the TPSM82866A that integrates a 200nH shielded inductor and shields the IC for better EMI performance. According to the TI datasheet, the MagPack variant has lower supply risk as it uses a TI-sourced inductor, unlike other variants that require an external inductor from a non-TI vendor.

What is the efficiency of TPSM82866A?

The TPSM82866A achieves up to 95% efficiency, as stated in the TI product page. This high efficiency is due to the integrated synchronous buck converter and low-resistance power FETs. It helps reduce power dissipation and extends battery life in portable applications.

What are the typical applications of TPSM82866A?

The TPSM82866A is ideal for core supplies of FPGAs, CPUs, and ASICs, as well as optical modules, medical devices, and industrial equipment. Its small footprint and integrated inductor make it suitable for space-constrained designs where high efficiency and low EMI are critical.

Is TPSM82866A suitable for FPGA core supply?

Yes, the TPSM82866A is specifically designed for core supplies of FPGAs, CPUs, and ASICs. Its 6A output current and adjustable output voltage down to 0.6V meet the requirements of modern FPGA cores. The integrated inductor and high efficiency help maintain stable operation in compact layouts.

What is the lead time for TPSM82866A?

The lead time for TPSM82866A varies by package variant. According to TI E2E forum, the MagPack variant has the lowest supply risk due to its TI-sourced inductor, while other variants may have longer lead times. As of 2026-08-25, availability should be checked with authorized distributors like DigiKey and Mouser.

Where can I buy TPSM82866A?

TPSM82866A is available from authorized distributors such as DigiKey and Mouser. For example, the TPSM82866AA0SRDJR is listed on DigiKey with pricing and inventory. You can also purchase directly from TI.com. As of 2026-08-25, check current stock and pricing on these platforms.

What is the price of TPSM82866A?

The price of TPSM82866A varies by quantity and distributor. As of 2026-08-25, the TPSM82866AA0SRDJR is priced around $4.50 for single units, decreasing to approximately $2.88 at 1000 units, based on typical distributor pricing. For exact pricing, check DigiKey or Mouser.

Can TPSM82866A be used in automotive applications?

The TPSM82866A is not specifically qualified to AEC-Q100, so it is not recommended for automotive applications without additional qualification. For automotive-grade options, consider TI's automotive-qualified power modules. Always verify compliance with your specific automotive requirements.

What is the best drop-in replacement for TPSM82866A?

The best drop-in replacement for TPSM82866A is the TPSM82864A, which is pin-to-pin and BOM-to-BOM compatible in the RDJ and RDM packages, but offers 4A instead of 6A. For higher current, consider the TPSM82866C, which is also a 6A module but may have different specifications. Always verify pin compatibility and electrical parameters before substitution.

Is TPSM82866A the same as TPSM82866C?

No, TPSM82866A and TPSM82866C are different variants. According to a comparison on datastorageic.com, they target different power-rail requirements. The TPSM82866C may have a wider input range or different switching frequency options. Check the datasheets for specific differences before selecting.

What are the key specifications of TPSM82866A that engineers should know?

Engineers should know that TPSM82866A is a 6A step-down power module with 2.4V to 5.5V input, 0.6V to 5.5V output, integrated 220nH inductor, and up to 95% efficiency. It comes in a 3.5mm x 4.0mm B0QFN package. The module features power-good, enable, and soft-start, and is designed for FPGA, CPU, and ASIC core supplies.

Engineering reference data for TPSM82866A — comparison, design guidance, and compliance information.

Selection Guide

Choose the TPSM82866A when you need a 6A step-down power module with integrated inductor for space-constrained designs. It is ideal for FPGA, CPU, and ASIC core supplies. If you need lower current, the TPSM82864A offers a pin-compatible 4A option. For enhanced EMI performance, select the MagPack variant (TPSM82866AA0PRCFR). For higher efficiency, consider the RDM package (TPSM82866AA0HRDMR). Cross-brand alternatives like ISL8200AMIRZ may be considered but verify pin compatibility and electrical specs.

Comparison with Alternatives

Parameter	This Product	TPSM82864A	TPSM82866AA0HRDMR	TPSM82866AA0PRCFR	TPSM82866C	ISL8200AMIRZ
Package	B0QFN (23) 3.5 mm x 4.0 mm	B0QFN (23) 3.5 mm x 4.0 mm	RDM (thin overmolded QFN)	RCF (MagPack)	B0QFN (23) 3.5 mm x 4.0 mm	QFN (similar footprint)
Brand	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments	Renesas Electronics
Output Current	6 A	4 A	6 A	6 A	6 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	2.4 V to 5.5 V	[DATA_NEEDED]	[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	0.6 V to 5.5 V	[DATA_NEEDED]	[DATA_NEEDED]
Integrated Inductor	220 nH (RDJ/RDM), 200 nH (RCF)	220 nH	220 nH	200 nH	[DATA_NEEDED]	[DATA_NEEDED]
Efficiency	Up to 95%	Up to 95%	Higher than RDJ	Up to 95%	[DATA_NEEDED]	[DATA_NEEDED]
EMI Performance	Integrated shielded inductor	Integrated shielded inductor	Integrated shielded inductor	Enhanced shielding (MagPack)	[DATA_NEEDED]	[DATA_NEEDED]

Key Differentiators

Integrated inductor reduces design complexity (vs Discrete buck converter solutions)
Pin-to-pin compatible with TPSM82864A (vs TPSM82864A)
MagPack variant offers enhanced EMI shielding (vs TPSM82866AA0SRDJR)

Design Notes

Place input and output capacitors close to the module pins to minimize parasitic inductance. Use a 10uF ceramic capacitor on the input and a 22uF ceramic capacitor on the output for stable operation. Ensure a solid ground plane beneath the module for thermal and electrical performance.

The TPSM82866A integrates the inductor and power stage, so thermal management is crucial. Use multiple thermal vias under the exposed pad to conduct heat to the PCB ground plane. For high-current applications, consider adding a copper pour on the top layer to spread heat.

Do not exceed the input voltage range of 5.5V. Ensure the output capacitors have adequate voltage rating. The feedback resistor divider should use 1% tolerance resistors to maintain output accuracy. Also, verify the soft-start capacitor value to avoid inrush current issues.