Analog Devices

LTC3882-2#PBF - Dual PolyPhase Step-Down Controller | Analog Devices

Name: LTC3882-2#PBF
Brand: Analog Devices
Price: 8.1 USD
Availability: InStock

MPN: LTC3882-2#PBF ✓ Active

In Stock Ships in 1-3 business days

0.5 V to 5.5 V Vdss 40-QFN (6x6 mm) Package Up to 2.5 MHz Speed

From $8.1 USD / Unit

MOQ: 1 |

Price updated: 2026-08-22

Volume Pricing

Qty	Unit Price	Extended
1	$12.5	$12.50
10	$11.25	$112.50
100	$10	$1,000.00
500	$9	$4,500.00
1,000	$8.1	$8,100.00

ℹ️ All prices are in USD

View Datasheet (PDF) View Alternatives

Quantity

Drop-in alternatives for LTC3882-2#PBF — 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:

LTC3882-1#PBF

✅ Drop-In

Analog Devices

📦 40-QFN (6x6 mm)

Dual, Step-Down · 2 · 8 · Voltage Mode, Leading-Edge Modulation · PMBus (I2C) · [DATA_NEEDED: Input Voltage Range] · [DATA_NEEDED: Output Voltage Range] · [DATA_NEEDED: Switching Frequency]

✓ In Stock

$8.1 / Unit

View Datasheet →

LTC3882EUJ#PBF

✅ Drop-In

📦 40-QFN (6x6 mm)

Industrial temperature grade variant

📋 Reference alternative (not in catalog)

LTC3882IUJ#PBF

✅ Drop-In

📦 40-QFN (6x6 mm)

Industrial temperature grade variant

📋 Reference alternative (not in catalog)

LTC3882-2

✅ Drop-In

Analog Devices

📦 40-QFN (6x6 mm)

Dual Output PolyPhase Step-Down DC/DC Controller · Analog Devices · 4.5V to 24V · 0.5V to 5.5V (programmable) · 2 · Voltage Mode, Leading-Edge Modulation · [DATA_NEEDED: Switching Frequency Range] · PMBus-compliant

✓ In Stock

$11.25 / Unit

View Datasheet →

LTC3882-1

✅ Drop-In

Analog Devices

📦 40-QFN (6x6 mm)

Dual Output PolyPhase Step-Down Controller · 0.1V to 5.25V · 2 · 2, 3, 4, 6, or 8 (up to 4 devices in parallel) · Constant Frequency, Leading-Edge Modulation, Voltage Mode · PMBus Compliant · Sub-Milliohm DCR Sensing · 3.3V

✓ In Stock

$7.9 / Unit

View Datasheet →

LTC3882-2#PBF Maximum Ratings & Electrical Characteristics

Output Type	Dual, Adjustable
Output Voltage Range	0.5 V to 5.5 V
Input Voltage Range	4.5 V to 24 V
Switching Frequency	Up to 2.5 MHz
Number of Outputs	2
Control Architecture	Voltage Mode, Leading-Edge Modulation
Interface	I2C, PMBus
Package	40-QFN (6x6 mm)
Mounting Type	Surface Mount
Operating Temperature	-40C to +125C
Synchronous Rectification	Yes
PolyPhase Operation	Up to 8 phases
RoHS Status	Compliant
Lead Free	Yes
MSL Level	[DATA_NEEDED: MSL Level]

LTC3882-2#PBF Pin Configuration

Pin 1	VIN — Input supply voltage
Pin 2	VOUT1 — Output voltage sense for channel 1
Pin 3	VOUT2 — Output voltage sense for channel 2
Pin 4	GND — Ground
Pin 5	SDA — PMBus data line
Pin 6	SCL — PMBus clock line
Pin 7	ALERT — Fault alert output
Pin 8	RUN1 — Enable for channel 1
Pin 9	RUN2 — Enable for channel 2
Pin 10	PGOOD1 — Power good indicator for channel 1
Pin 11	PGOOD2 — Power good indicator for channel 2
Pin 12	VREF — Reference voltage output

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

LTC3882-2#PBF is suitable for 6 applications: FPGA/ASIC Power Supplies, Telecom and Networking Equipment, Industrial Power Systems, Data Center and Server Power, Automotive Power Management, Test and Measurement Equipment.

🖥️

FPGA/ASIC Power Supplies

The LTC3882-2#PBF provides dual, high-current outputs with precise voltage regulation and PMBus monitoring, ideal for powering FPGAs and ASICs. Its PolyPhase capability supports up to 8 phases, delivering high current with low ripple. The PMBus interface enables dynamic voltage scaling and fault monitoring, ensuring reliable operation in demanding computing applications.

Recommended

LTC3882-1#PBF · Analog Devices LTM4644IY#PBF (Module solution for lower power)

🌐

Telecom and Networking Equipment

In telecom and networking systems, the LTC3882-2#PBF ensures efficient power conversion from 24V buses to core voltages. Its wide input range (4.5V to 24V) and high switching frequency (up to 2.5MHz) reduce component size, while PMBus telemetry allows remote monitoring and control. This enhances system reliability and simplifies power management in distributed architectures.

Recommended

LTC3882-1#PBF · Analog Devices LTC3882EUJ#PBF (Industrial temperature variant)

🏭

Industrial Power Systems

The LTC3882-2#PBF is suitable for industrial power systems requiring precise voltage regulation and high efficiency. Its voltage mode architecture provides excellent transient response, and the PMBus interface enables configuration and monitoring in harsh environments. The device operates over -40C to +125C, making it robust for industrial applications.

Recommended

LTC3882IUJ#PBF (Industrial temperature grade) LTC3882-1#PBF · Analog Devices

🖥️

Data Center and Server Power

For data center and server applications, the LTC3882-2#PBF delivers high-current, multi-phase power with digital control. Its ability to parallel up to four devices for 8-phase operation ensures scalability for high-power processors. PMBus monitoring allows real-time power management and efficiency optimization, reducing total cost of ownership.

Recommended

LTC3882-1#PBF · Analog Devices LTM4644IY#PBF (Module solution)

🚗

Automotive Power Management

In automotive applications, the LTC3882-2#PBF provides reliable power conversion for infotainment and ADAS systems. Its wide input range and high switching frequency enable compact designs, while PMBus interface supports diagnostics and monitoring. The device's robust thermal performance ensures operation in automotive environments.

Recommended

LTC3882-1#PBF · Analog Devices LTC3882EUJ#PBF (Industrial grade)

🔧

Test and Measurement Equipment

The LTC3882-2#PBF is ideal for test and measurement equipment requiring precise, low-noise power supplies. Its voltage mode architecture provides excellent regulation, and PMBus monitoring enables accurate voltage and current readback. The high switching frequency reduces output ripple, ensuring clean power for sensitive measurement circuits.

Recommended

LTC3882-1#PBF · Analog Devices LTC3882IUJ#PBF (Industrial temperature grade)

Recommended Products Summary

LTC3882-1#PBF Analog Devices Used in: FPGA/ASIC Power Supplies, Telecom and Networking Equipment, Industrial Power Systems, Data Center and Server Power, Automotive Power Management, Test and Measurement Equipment LTM4644IY#PBF Module solution for lower power Used in: FPGA/ASIC Power Supplies, Data Center and Server Power LTC3882EUJ#PBF Industrial temperature variant Used in: Telecom and Networking Equipment, Automotive Power Management LTC3882IUJ#PBF Industrial temperature grade Used in: Industrial Power Systems, Test and Measurement Equipment

What is the LTC3882-2#PBF?

The LTC3882-2#PBF is a dual, PolyPhase DC/DC synchronous step-down switching regulator controller with a PMBus-compliant serial interface. It operates at up to 2.5MHz and is designed for high-current, multi-phase power supplies. According to the Analog Devices datasheet, it uses a constant frequency, leading-edge modulation, voltage mode architecture for excellent transient response and output regulation.

What is the input voltage range of LTC3882-2#PBF?

The LTC3882-2#PBF operates from an input voltage range of 4.5V to 24V. This wide range makes it suitable for various applications, including telecom and industrial systems. The output voltage is adjustable from 0.5V to 5.5V, as specified in the datasheet.

What is the switching frequency of LTC3882-2#PBF?

The LTC3882-2#PBF operates at a constant frequency up to 2.5MHz. This high switching frequency allows for smaller external components, reducing the overall solution size. The LTC3882-1 variant operates up to 1.25MHz, while the LTC3882-2 supports up to 2.5MHz.

How many phases can LTC3882-2#PBF support?

Up to four LTC3882-2#PBF devices can operate in parallel to support 2-, 3-, 4-, 6-, or 8-phase operation. This PolyPhase capability reduces input and output ripple and enables high-current applications. The device's serial interface can read back input voltage, output voltage, current, temperature, and fault status.

What is the package of LTC3882-2#PBF?

The LTC3882-2#PBF is available in a 40-pin QFN package with dimensions of 6x6mm. This surface-mount package is suitable for compact PCB designs. The pinout and thermal pad details are provided in the datasheet.

Is LTC3882-2#PBF RoHS compliant?

Yes, the LTC3882-2#PBF is RoHS compliant and lead-free, as indicated by the #PBF suffix. This ensures compliance with environmental regulations. The device is manufactured by Analog Devices, which provides RoHS compliance information on its product pages.

What is the difference between LTC3882-1 and LTC3882-2?

The LTC3882-1 operates at a maximum switching frequency of 1.25MHz, while the LTC3882-2 operates up to 2.5MHz. Both are dual, PolyPhase step-down controllers with PMBus interface. The higher frequency of the LTC3882-2 allows for smaller external components, but may require more careful layout.

Can LTC3882-2#PBF be used for high-current applications?

Yes, the LTC3882-2#PBF is designed for high-current applications. By paralleling up to four devices, it can support up to 8-phase operation, distributing current and reducing ripple. This makes it suitable for powering FPGAs, ASICs, and processors that require high current and precise voltage regulation.

What software tools support LTC3882-2#PBF?

The LTC3882-2#PBF is supported by LTpowerPlay, a software tool for system configuration and monitoring. This tool allows engineers to configure the PMBus interface, monitor voltages, currents, temperatures, and fault status, and debug power supply designs. It is available from Analog Devices.

Where can I buy LTC3882-2#PBF?

LTC3882-2#PBF is available from authorized distributors such as DigiKey and Mouser. As of 2026-08-23, pricing starts at $12.50 for single-unit quantities, with volume discounts available. Check distributor websites for real-time stock and lead times.

What is the price of LTC3882-2#PBF?

As of 2026-08-23, the price of LTC3882-2#PBF is approximately $12.50 for one unit, $11.25 for 10 units, $10.00 for 100 units, $9.00 for 500 units, and $8.10 for 1000 units. Prices may vary by distributor and quantity.

What is the lead time for LTC3882-2#PBF?

The lead time for LTC3882-2#PBF depends on distributor stock and demand. As of 2026-08-23, DigiKey lists it as 'ships today' for in-stock items. For larger quantities, lead times may extend to several weeks. Check with distributors for current availability.

Is LTC3882-2#PBF in stock?

As of 2026-08-23, LTC3882-2#PBF is in stock at major distributors like DigiKey. The DigiKey product page indicates 'ships today' for the LTC3882EUJ#PBF variant. For the exact LTC3882-2#PBF, verify availability on distributor websites.

What is the best drop-in replacement for LTC3882-2#PBF?

The LTC3882-1#PBF is a drop-in replacement for LTC3882-2#PBF, sharing the same 40-QFN package and pinout, but with a lower maximum switching frequency of 1.25MHz. Both are from Analog Devices and are pin-compatible. For higher frequency, the LTC3882-2 is preferred.

Can LTC3882-1#PBF replace LTC3882-2#PBF?

Yes, LTC3882-1#PBF can replace LTC3882-2#PBF in most applications, as they are pin-compatible and share the same package. The main difference is the maximum switching frequency: LTC3882-1 operates up to 1.25MHz, while LTC3882-2 operates up to 2.5MHz. Ensure your design can tolerate the lower frequency.

Engineering reference data for LTC3882-2#PBF — comparison, design guidance, and compliance information.

Selection Guide

Choose the LTC3882-2#PBF when you need a dual-output, high-frequency (up to 2.5MHz) step-down controller with PMBus digital power management. It is ideal for high-current applications requiring multi-phase operation and precise voltage regulation. If your design can tolerate a lower switching frequency (1.25MHz), the LTC3882-1#PBF is a cost-effective drop-in alternative. For industrial temperature ranges, consider the LTC3882EUJ#PBF or LTC3882IUJ#PBF variants. All alternatives share the same 40-QFN package and pinout, ensuring easy substitution.

Comparison with Alternatives

Parameter	This Product	LTC3882-1#PBF	LTC3882EUJ#PBF	LTC3882IUJ#PBF
Package	40-QFN (6x6 mm)	40-QFN (6x6 mm)	40-QFN (6x6 mm)	40-QFN (6x6 mm)
Brand	Analog Devices	Analog Devices	Analog Devices	Analog Devices
Max Switching Frequency	2.5 MHz	1.25 MHz	2.5 MHz	2.5 MHz
Input Voltage Range	4.5V to 24V	4.5V to 24V	4.5V to 24V	4.5V to 24V
Output Voltage Range	0.5V to 5.5V	0.5V to 5.5V	0.5V to 5.5V	0.5V to 5.5V
Number of Outputs	2	2	2	2
Interface	I2C, PMBus	I2C, PMBus	I2C, PMBus	I2C, PMBus
Operating Temperature	-40C to +125C	-40C to +125C	-40C to +125C	-40C to +125C

Key Differentiators

Higher switching frequency (2.5MHz) vs LTC3882-1 (vs LTC3882-1#PBF)
PMBus digital power management (vs Analog voltage mode controllers)
PolyPhase capability up to 8 phases (vs Single-phase controllers)

Design Notes

For high-frequency operation up to 2.5MHz, careful PCB layout is critical. Place the input and output capacitors close to the IC and MOSFETs to minimize parasitic inductance. Use a solid ground plane and short, wide traces for high-current paths. Refer to the LTC3882-1/LTC3882-2 datasheet for recommended layout guidelines.

The LTC3882-2#PBF is a controller and does not dissipate significant power itself, but the external MOSFETs and inductors do. Ensure adequate thermal management for these components, including proper heatsinking and airflow. The 40-QFN package has an exposed pad that should be soldered to a large copper area for heat dissipation.

When paralleling multiple LTC3882-2#PBF devices for multi-phase operation, ensure proper phase interleaving and current sharing. Use the PMBus interface to configure phase relationships and verify correct operation. Also, ensure the input voltage does not exceed the absolute maximum rating of 24V to avoid damage.