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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > LED Drivers

Infineon Technologies IRS2980SPBF

Name: IRS2980SPBF
Brand: Infineon Technologies
SKU: IRS2980SPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS2980SPBF

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: IRS2980SPBF.pdf

Description:: IC LED DRIVER CTRLR PWM 8SOIC

Quantity:: RFQ Add To RFQ list

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Inventory:4,686

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Product details

Overview

IRS2980SPBF from Infineon Technologies (formerly International Rectifier) is a high-voltage buck LED driver controller IC with hysteretic current regulation, 600 V breakdown voltage, 15.6 V internal zener clamp on VCC, and micropower startup (250 µA). It integrates a high-voltage regulator (up to 450 V), analog/PWM dimming interface (0–2 V or 3.3/5 V logic), and floating high-side differential current sensing for low-side MOSFET control - used in LED retrofit lamps and driver modules.

For engineers reviewing the IRS2980SPBF datasheet, IRS2980SPBF pinout, IRS2980SPBF application, or IRS2980SPBF equivalent, key selection criteria include its 600 V V_OFFSET, 180 mA/260 mA IO+/IO− drive capability, 15.6 V V_CLAMP, hysteretic frequency range (25–120 kHz), and SO8 package compatibility with cost-sensitive AC-input LED drivers.

Technical Context

The IRS2980SPBF implements a self-oscillating hysteretic buck controller with internal high-voltage regulation and floating current-sense level-shifting. Its control loop maintains tightly regulated average LED current by dynamically adjusting switching frequency (25–120 kHz) and duty cycle up to 100% in response to line and load variations.

It features dual UVLO thresholds (V_HVS+ = 9.3 V, V_HVS− = 7.3 V), programmable RAMP pin timing (15 µA charging current), and integrated 15.6 V zener clamp to protect VCC. The device operates without external protection circuits and supports dimming via analog (0–2 V) or PWM (≤1 kHz) signals.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology	Buck converter controller with hysteretic current regulation
V_OFFSET (Breakdown)	600 V - withstands transient overvoltage up to 600 V; rated for 450 V continuous HV input
V_CLAMP	15.6 V nominal - internal zener limits VCC to safe level; eliminates need for external Zener
I_O+/I_O−	180 mA source / 260 mA sink - drives low-side N-channel MOSFET gate directly without buffer
f_MAX	150 kHz - sets upper bound of hysteretic switching frequency; typical operation 25–120 kHz
V_CS Threshold	0.5 V - current-sense comparator reference; defines regulated LED current via R_CS
Startup Current	250 µA - enables micropower start-up from bulk capacitor; reduces standby losses

Pinout & Package

IRS2980SPBF is housed in an SO8 (Small Outline, 8-pin) package with standard 1.27 mm pitch and gull-wing leads. Thermal pad is not present; PCB copper area under package recommended for thermal relief per datasheet guidance.

Pin/Terminal	Circuit Role	Design Meaning
1 (HV)	High-voltage input	Connects to rectified AC bus (up to 450 V DC); feeds internal HV regulator
2 (VS)	Source sense / floating reference	References high-side current sense; enables differential sensing across CS resistor
3 (COM)	Power and signal ground	Common return for VCC, ADIM, RAMP, CS, OUT; must be low-impedance
4 (ADIM)	Analog/PWM dimming input	Accepts 0–2 V analog or logic-level PWM (≤1 kHz); controls LED brightness 0–100%
5 (RAMP)	Oscillator timing node	Charged at 15 µA; threshold at 2.0 V (shutdown) and 0.2 V (restart) sets frequency
6 (OUT)	Gate driver output	Drives low-side MOSFET gate; 180 mA source / 260 mA sink capability
7 (CS)	Current sense input	Differential input referenced to VS; compares against 0.5 V threshold for hysteretic regulation
8 (VCC)	Internal supply rail	Internally regulated at ~9.9 V; clamped at 15.6 V; powers logic and gate driver

Key Features

Feature	Design Value
Hysteretic current regulation	Eliminates external error amplifier and compensation network; simplifies design and improves transient response
Floating high-side differential current sense	Enables accurate sensing with low-side switch topology; avoids high-side gate driver complexity and cost
Integrated 450 V HV regulator	Derives VCC directly from HV bus; removes need for auxiliary winding or linear regulator
15.6 V internal zener clamp	Protects VCC from overvoltage during transients; replaces discrete Zener diode and series resistor
Micropower startup (250 µA)	Reduces energy draw during initial power-up; supports compliance with low-standby-power standards

Applications

LED Retrofit Lamps

AC-Input LED Modules

Use Scenario: Direct replacement for incandescent or CFL bulbs in E26/E27 sockets with universal AC input (90–265 V_AC).

IC Role / Device Role: Buck controller regulating constant LED current using hysteretic feedback and integrated HV supply.

Use Value: Enables single-chip solution with <5 external components; achieves >85% efficiency and <10% current ripple at 100 mA output.

Use Scenario: Compact LED driver board for commercial downlights and panel lights powered from rectified AC mains.

IC Role / Device Role: Primary controller managing buck conversion, dimming interface, and overcurrent protection.

Use Value: Supports analog/PWM dimming without additional ICs; IO+/IO− drive strength ensures fast MOSFET switching at 100 kHz.

Dimmable LED Ballasts

Industrial Status Lighting

Use Scenario: Triac-dimmable LED driver for residential lighting where leading-edge phase-cut dimmers are used.

IC Role / Device Role: Hysteretic controller synchronized to dimmer waveform via ADIM pin; maintains stable current despite chopped AC.

Use Value: Eliminates flicker and audible noise through adaptive frequency modulation; tolerates 0–100% dimming range.

Use Scenario: Long-life indicator lighting in factory HMIs, control panels, and safety signage operating continuously at 50°C ambient.

IC Role / Device Role: Robust buck controller with industrial-grade qualification (JEDEC Class I latch-up, MSL2, -40°C to +125°C TJ).

Use Value: Delivers >10-year lifetime under thermal stress; internal 15.6 V clamp prevents VCC overvoltage failure during surge events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
IRS2541SPBF	Fixed-frequency (500 kHz) current-mode controller; requires external VCC supply; no integrated HV regulator	Designed for isolated flyback topologies; lacks hysteretic simplicity and HV bootstrap capability	Select when higher switching frequency and transformer isolation are required; adds BOM cost and complexity
MP4007GN	65 V max V_IN; requires external HV startup circuit; 0.25 V current-sense threshold; SO8 package	Targeted at low-line (<120 V_AC) non-isolated buck drivers; not rated for universal AC input	Choose only for cost-sensitive, low-input-voltage designs where 450 V HV capability is unnecessary

Compared with IRS2541SPBF and MP4007GN, the IRS2980SPBF uniquely combines 450 V HV regulation, hysteretic simplicity, and SO8 integration - making it optimal for universal-input, non-isolated LED retrofit drivers where component count and reliability are critical.

Availability

IRS2980SPBF is available at Aetrix Electronics and suitable for LED retrofit lamps, AC-input LED modules, and dimmable ballast designs requiring stable component supply and long-term manufacturability.

Supply support for IRS2980SPBF 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 acquired International Rectifier in 2015 and continues to support legacy IR products including the IRS2980SPBF family.

This device belongs to IR's LED Driver Controller product line, designed specifically for cost-effective, high-reliability, non-isolated AC-input LED lighting solutions with minimal external components.

FAQ

What is the maximum continuous input voltage the IRS2980SPBF can handle?

The IRS2980SPBF is rated for continuous high-voltage input up to 450 V DC on the HV pin, limited by internal regulator power dissipation. It can withstand transient voltages up to 600 V for short durations, as confirmed in the Absolute Maximum Ratings table. Operation above 375 V requires careful thermal design per datasheet Section 6.

Does the IRS2980SPBF require an external VCC supply?

No. The IRS2980SPBF includes an integrated high-voltage regulator that derives VCC directly from the HV pin, eliminating the need for an auxiliary winding or external linear regulator. VCC is internally regulated to ~9.9 V and clamped at 15.6 V, enabling true single-supply operation from rectified AC bus.

Can the IRS2980SPBF support both analog and PWM dimming simultaneously?

No - the ADIM pin accepts either analog voltage (0–2 V) or logic-level PWM (3.3 V or 5 V, ≤1 kHz), but not both simultaneously. The internal circuitry interprets the signal type based on amplitude and duty cycle; mixing signal types may cause unstable dimming behavior or loss of regulation.

What is the purpose of the RAMP pin, and how is it used in design?

The RAMP pin sets the hysteretic oscillator frequency by controlling the charge time of an external capacitor. A 15 µA internal current charges the capacitor until it reaches 2.0 V (shuts off switching), then discharges to 0.2 V (restarts). Frequency is adjusted by selecting C_RAMP; typical values range from 100 pF to 1 nF for 25–120 kHz operation.

IRS2980SPBF Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: LEDrivIR™

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

Type:: DC DC Controller

Topology:: Step-Down (Buck)

Internal Switch(s):: No

Number of Outputs:: 1

Voltage - Supply (Min):: 10V

Voltage - Supply (Max):: 16.6V

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: 150kHz

Dimming:: Analog, PWM

Applications:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

IRS2980SPBF FAQ

1.How can I place an order for IRS2980SPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS2980SPBF 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 IRS2980SPBF reliable?

The price and inventory of IRS2980SPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2980SPBF is usually 5 days.

3.What payment methods are accepted for IRS2980SPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2980SPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS2980SPBF?

IRS2980SPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS2980SPBF 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 IRS2980SPBF?

For technical support, including IRS2980SPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2980SPBF requirements.

6.How does Aetrix verify that IRS2980SPBF is sourced from the original manufacturer or authorized distributors?

All IRS2980SPBF 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 IRS2980SPBF meets industry standards.

7.What is the process for return or replacement of IRS2980SPBF?

All IRS2980SPBF units undergo pre-shipment inspection (PSI). If there is an issue with IRS2980SPBF, 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 IRS2980SPBF part is unused and in its original packaging.

Return procedure for IRS2980SPBF:

1.Submit a request within 90 days.

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

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