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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Infineon Technologies IR3883MTRPBF

Name: IR3883MTRPBF
Brand: Infineon Technologies
SKU: IR3883MTRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IR3883MTRPBF

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-PowerVFQFN

Datasheet:: IR3883MTRPBF.pdf

Description:: IC REG BUCK ADJ 3A 16PQFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,716

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Product details

Overview

IR3883MTRPBF from Infineon Technologies is a monolithic synchronous buck regulator with integrated high- and low-side MOSFETs, 800 kHz fixed switching frequency, 3 A continuous output current capability, 0.5 V ±0.6% reference voltage accuracy, and EaSy SupIRBuck® stability engine enabling ceramic-capacitor-only operation without external compensation - deployed in server point-of-load power rails.

For engineers reviewing the IR3883MTRPBF datasheet, IR3883MTRPBF pinout, IR3883MTRPBF application, or IR3883MTRPBF equivalent, key selection criteria include its dual-input voltage support (2.5–14 V with external Vcc or 4.5–14 V single-rail), FCCM/diode emulation mode control via En/FCCM pin, thermally compensated OCP with three selectable thresholds, and PGND/Vin separation for noise-sensitive power delivery.

Technical Context

The IR3883 implements an adaptive on-time PWM controller with zero-cross detection and internal soft-start ramp (0.2 mV/µs typical). Its EaSy engine eliminates need for external loop compensation by dynamically adjusting on-time based on input/output voltage and inductor ripple, ensuring stability across ceramic capacitor ESR ranges from 0.5 mΩ to 10 mΩ.

It supports two operating modes: Forced Continuous Conduction Mode (FCCM) for low-noise, constant-frequency regulation, and diode emulation mode for light-load efficiency improvement - selected via analog threshold on the En/FCCM pin. Over-current protection uses thermally compensated peak detection with user-selectable trip levels via OCSet pin biasing (float/Vcc/PGND).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.5–14 V (with external Vcc) or 4.5–14 V (single-rail); enables flexible biasing in multi-rail systems
Output Current	Continuous 3 A; sufficient for CPU core, memory, or FPGA I/O rail loads in compact form factors
Switching Frequency	Fixed 800 kHz; balances size (inductor/capacitor) vs. efficiency and EMI performance
Reference Voltage	0.5 V ±0.6% (−40°C to 125°C); supports precise 1.0 V, 1.2 V, 1.8 V outputs with <±1% total error
Quiescent Current	1.8 µA (typ.) in shutdown; critical for always-on standby power domains
R_DS(on) Top/Bottom	82 / 26 mΩ (typ.); reduces conduction loss at 3 A, enabling >90% efficiency at 12 V_IN/1.2 V_OUT
Thermal Resistance	θ_JA = 40°C/W; validated on standard 4-layer PCB with exposed pad thermal vias

Pinout & Package

Packaged in a thermally enhanced 3 mm × 3 mm PQFN with 16-pin layout and exposed thermal pad (connected to PGND). Pin count includes dedicated PGND (pins 13–14), PVin (pins 15–16), and separated signal ground (pin 4) to minimize noise coupling into feedback path.

Pin/Terminal	Circuit Role	Design Meaning
1 Vin	LDO input supply	Bypasses internal LDO when externally powered; enables ultra-low-I_Q operation
2 Vcc	Bias supply for control logic	Requires 2.2 µF ceramic cap to PGND; powers gate drivers and PWM core
3 OCSet	OCP threshold select	Floating = 3.5×I_OUT, tied to Vcc = 2.5×I_OUT, tied to PGND = 1.5×I_OUT
4 Gnd	Signal reference ground	Isolated from PGND to prevent switching noise injection into FB/SS circuits
5 En/FCCM	Enable + mode control	Voltage threshold determines FCCM (high) vs. diode emulation (low) operation
6 PGood	Open-drain status flag	Asserts after soft-start completion and V_OUT within ±10%; requires 50 kΩ pull-up
7 Fb	Voltage feedback input	Connects to resistor divider; sets output via 0.5 V reference
8 Vo	Output voltage sense	Direct connection to output improves line/load regulation and on-time accuracy
9 Boot	High-side driver supply	Connected to SW node via bootstrap capacitor; enables N-channel high-side MOSFET drive
10–12 SW	Power switch node	Single net connecting internal HS/LS FETs and external inductor; high dV/dt node
13–14 PGND	Power ground return	Low-impedance path for MOSFET source currents; must be solid plane under exposed pad
15–16 PVin	Main power stage input	Supplies high-current path to internal FETs; separate from Vin/Vcc to reduce noise coupling

Key Features

Feature	Design Value
EaSy SupIRBuck® engine	Stability guaranteed with 10–100 µF ceramic output capacitors; no external compensation required
Thermally compensated OCP	Three user-selectable current limits (1.5×/2.5×/3.5× I_OUT) with automatic derating above 100°C
Pre-bias start-up	Safe turn-on when output capacitor is pre-charged; prevents reverse current flow into load
Adaptive light-load efficiency	Diode emulation + ultra-low quiescent current (1.8 µA) extends battery life in standby mode
Separate PGND/GND planes	Reduces switching noise coupling into feedback and soft-start circuitry for ±0.6% V_REF accuracy

Applications

Server Point-of-Load

Storage Controller Power

Use Scenario: Delivering 1.2 V @ 2.5 A to x86 CPU cores in 1U rack servers with strict thermal envelope.

IC Role / Device Role / Timing Role: Primary synchronous buck regulator with FCCM mode enabled for low-output-ripple power delivery.

Use Value: 800 kHz switching allows compact 1.5 µH inductors; 3 A rating supports burst-mode CPU loads without thermal throttling.

Use Scenario: Generating 3.3 V @ 1.8 A for NVMe SSD controller ASICs in enterprise storage enclosures.

IC Role / Device Role / Timing Role: Secondary buck converter with diode emulation mode active during idle periods to reduce standby power.

Use Value: 1.8 µA shutdown current extends system-level sleep duration; 0.5 V reference ensures tight 3.3 V tolerance over temperature.

Communications Baseband

Distributed DC-DC Architecture

Use Scenario: Providing 1.8 V @ 2.2 A to FPGA-based baseband processing units in 5G radio units.

IC Role / Device Role / Timing Role: High-efficiency PoL regulator with pre-bias start-up supporting hot-swap insertion of daughterboards.

Use Value: Pre-bias capability prevents bus droop during live insertion; R_DS(on) values minimize power loss at full load.

Use Scenario: Local 1.0 V conversion for GPU memory interface in AI accelerator modules with distributed power planes.

IC Role / Device Role / Timing Role: Compact 3 mm × 3 mm buck regulator placed adjacent to load to minimize IR drop and noise.

Use Value: Exposed thermal pad and θ_J–PCB = 6°C/W enable 3 A operation without heatsink in constrained board space.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MP2315DJ-LF-Z	4.5–28 V input, 3 A, 500 kHz, no Vo sense pin, fixed 0.8 V reference	Lacks Vo sensing and adaptive on-time; less accurate line regulation at low V_OUT	Preferred for higher-input-voltage industrial rails where 0.8 V reference suffices
TPS54332DDAR	3.5–28 V input, 3 A, adjustable frequency (200–2500 kHz), external compensation required	Requires type-II compensation network; higher BOM cost and layout sensitivity	Chosen when programmable frequency or wider input range outweighs simplicity advantage

Compared with MP2315DJ-LF-Z and TPS54332DDAR, IR3883MTRPBF delivers superior light-load efficiency via diode emulation, eliminates compensation design effort with EaSy engine, and provides tighter output accuracy through 0.5 V ±0.6% reference and Vo sense - making it optimal for space-constrained, high-precision computing rails.

Availability

IR3883MTRPBF is available at Aetrix Electronics and suitable for server point-of-load, storage controller power, and communications baseband applications requiring stable component supply, long-term lifecycle support, and RoHS6-compliant packaging.

Supply support for IR3883MTRPBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in silicon and GaN-based power stages.

The IR3883 belongs to Infineon's SupIRBuck® product line, engineered for simplified, high-density DC-DC conversion in datacenter and telecom infrastructure where footprint, thermal performance, and ease of design are critical.

FAQ

What input voltage configurations does IR3883MTRPBF support?

The IR3883MTRPBF supports two distinct input configurations: (1) wide-range 2.5–14 V using an external Vcc bias, and (2) single-rail 4.5–14 V where Vin is internally derived from PVin. In the latter case, the internal LDO operates in dropout below 5.5 V, requiring careful thermal design per datasheet Section 5.2.

How is over-current protection configured on IR3883MTRPBF?

Over-current protection threshold is set via the OCSet pin: floating selects 3.5× rated current (10.5 A), connection to Vcc selects 2.5× (7.5 A), and connection to PGND selects 1.5× (4.5 A). The protection is thermally compensated - trip level decreases linearly above 100°C to prevent false triggering under sustained high-temperature operation.

Can IR3883MTRPBF operate with only ceramic output capacitors?

Yes - the EaSy SupIRBuck® engine guarantees stability with ceramic output capacitors ranging from 10 µF to 100 µF and ESR values between 0.5 mΩ and 10 mΩ. No external compensation components (e.g., RC networks) are required, simplifying layout and reducing BOM count versus traditional buck controllers.

What is the purpose of the Vo pin on IR3883MTRPBF?

The Vo pin provides direct output voltage sensing to the on-time generator, improving line and load transient response accuracy. It compensates for PCB trace resistance between the regulator and load, enabling tighter regulation at the point-of-load - especially critical for low-voltage, high-current rails like 1.0 V or 1.2 V CPU supplies.

IR3883MTRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: SupIRBuck®

Package/Case:: 16-PowerVFQFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2.5V

Voltage - Input (Max):: 14V

Voltage - Output (Min/Fixed):: 0.5V

Voltage - Output (Max):: 5V

Current - Output:: 3A

Frequency - Switching:: 800kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-PQFN (3x3)

IR3883MTRPBF FAQ

1.How can I place an order for IR3883MTRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IR3883MTRPBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for IR3883MTRPBF reliable?

The price and inventory of IR3883MTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IR3883MTRPBF is usually 5 days.

3.What payment methods are accepted for IR3883MTRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IR3883MTRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IR3883MTRPBF?

IR3883MTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IR3883MTRPBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for IR3883MTRPBF?

For technical support, including IR3883MTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IR3883MTRPBF requirements.

6.How does Aetrix verify that IR3883MTRPBF is sourced from the original manufacturer or authorized distributors?

All IR3883MTRPBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that IR3883MTRPBF meets industry standards.

7.What is the process for return or replacement of IR3883MTRPBF?

All IR3883MTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with IR3883MTRPBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The IR3883MTRPBF part is unused and in its original packaging.

Return procedure for IR3883MTRPBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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