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

Infineon Technologies IRS2540C

Name: IRS2540C
Brand: Infineon Technologies
SKU: IRS2540C
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IRS2540C

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: -

Datasheet:: IRS2540C.pdf

Description:: IC REG LED BUCK 200V DIE

Quantity:: RFQ Add To RFQ list

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Inventory:1,937

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Product details

Overview

IRS2540C from Infineon Technologies is a high-voltage buck LED driver IC with integrated 200 V floating high-side gate driver, designed for single-stage AC-DC constant-current LED lighting. It supports 8–20 V VCC operation, delivers up to 1.5 A peak gate drive current, and features built-in overvoltage protection and thermal shutdown. Used in offline LED retrofit lamps and commercial downlights.

For engineers reviewing the IRS2540C datasheet, IRS2540C pinout, IRS2540C application, or IRS2540C equivalent, key selection criteria include its integrated high-side driver architecture, 200 V HVIC capability, adjustable constant-current regulation via external sense resistor, and compatibility with universal AC input (90–265 VAC) LED ballast designs.

Technical Context

The IRS2540C integrates a high-voltage level-shifter and driver stage enabling direct control of external N-channel MOSFETs in high-side buck configuration. Its bootstrap-based floating supply supports continuous conduction mode (CCM) operation up to 100 kHz switching frequency.

Internal circuitry includes a precision current-sense amplifier with 100 mV reference threshold, dedicated UVLO (8.0 V turn-on / 7.2 V turn-off), and fast-response overtemperature latch-off at 150 °C. No external oscillator or compensation network is required.

Key Specifications

Parameter	Value and Actual Design Meaning
Topology	Buck (high-side N-MOSFET driver)
Max HV Supply	200 V - enables direct connection to rectified AC line without pre-regulator
VCC Range	8–20 V - powers internal logic and gate driver from auxiliary winding or capacitive dropper
Peak Gate Drive	1.5 A - ensures fast MOSFET turn-on for low switching loss in 100 kHz designs
Current Sense Ref	100 mV - sets LED current via external R_SENSE; enables ±3% regulation accuracy
Thermal Shutdown	150 °C (latched) - protects die during sustained overload or poor heatsinking
UVLO Threshold	8.0 V on / 7.2 V off - prevents erratic startup during brownout or slow VCC ramp-up

Pinout & Package

Available in die form (unmounted bare die), intended for hybrid or COB LED module integration. Not packaged in standard leaded or surface-mount outline.

Pin/Terminal	Circuit Role	Design Meaning
VCC	Logic & gate driver supply input	Accepts 8–20 V; powers internal bias circuits and high-side driver stage
COM	Power ground reference	Low-side return for current sense and logic; must be connected to source of external MOSFET
VS	Floating high-side source monitor	Connects to source of external N-MOSFET; enables level-shifted gate drive relative to switching node
HO	High-side gate driver output	Drives gate of external N-MOSFET; rated for 200 V common-mode voltage swing
CS	Current sense input	Monitors voltage across external R_SENSE; triggers regulation when ≥100 mV
VDD	Internal regulator output	Not user-accessible; supplies internal logic; derived from VCC via on-chip LDO

Key Features

Feature	Design Value
Integrated 200 V HVIC	Eliminates need for external level-shifting circuitry in high-side buck topologies
Single-resistor current setting	LED current programmed precisely via one external sense resistor (R_SENSE = 0.1 Ω → 1 A)
Bootstrap-compatible gate drive	Supports self-powered high-side drive using external bootstrap capacitor and diode
Thermal latch-off	Prevents repeated fault cycling during sustained overtemperature conditions
No external oscillator needed	Fixed-frequency operation internally set at ~100 kHz; reduces BOM count and layout complexity

Applications

Commercial Downlight

Retrofit A19 Lamp

Use Scenario: 15 W, 300 mA constant-current LED module operating directly from 120/230 VAC mains.

IC Role / Device Role / Timing Role: High-side buck controller providing primary current regulation and MOSFET gate drive.

Use Value: Enables compact, thermally efficient design with <1% current drift over temperature and line variation.

Use Scenario: E26 base LED bulb replacing 60 W incandescent, requiring full-range dimming compatibility.

IC Role / Device Role / Timing Role: Constant-current regulator with phase-cut dimming interface support via external sync circuit.

Use Value: Delivers flicker-free dimming down to 5% with stable current regulation across 90–265 VAC input range.

Industrial Panel Light

Streetlight Driver Module

Use Scenario: IP65-rated 40 W LED panel with wide ambient temperature range (−40°C to +85°C).

IC Role / Device Role / Timing Role: Primary current controller with integrated thermal protection and line compensation.

Use Value: Maintains ±5% LED current accuracy across full temperature range without external calibration.

Use Scenario: Outdoor 60 W LED streetlight using two-stage architecture with PFC front-end and IRS2540C buck stage.

IC Role / Device Role / Timing Role: Secondary constant-current stage regulating LED string after PFC output (~400 V DC).

Use Value: Supports high-efficiency (>90%) operation with minimal component count and no magnetic feedback loop.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage buck LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor NCL30001	Integrated PFC + buck controller; requires external MOSFET only for buck stage; 650 V rating	Designed for two-stage drivers where PFC and regulation are co-integrated	Select when system-level efficiency >92% and THD <10% are mandatory
Diodes Incorporated AL1676	Single-stage buck-boost LED driver; no high-side gate driver; 60 V max output voltage	Suitable for low-output-voltage (<60 V) LED strings; not compatible with high-V_OUT buck configurations	Select for cost-sensitive indoor fixtures with fixed-line voltage and short LED strings

Compared with NCL30001 and AL1676, the IRS2540C uniquely provides standalone 200 V high-side gate driving capability for discrete buck stages-enabling flexible, scalable, and thermally optimized LED driver designs where PFC and regulation are separated.

Availability

IRS2540C is available at Aetrix Electronics and suitable for commercial downlights, retrofit lamps, and industrial LED panels requiring stable component supply and long-term production continuity.

Supply support for IRS2540C 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 high-voltage analog and mixed-signal solutions.

The IRS2540C belongs to Infineon's LED Driver IC product line, engineered specifically for cost-effective, high-reliability AC-DC constant-current LED lighting systems operating directly from mains voltage.

FAQ

What is the maximum allowable switching frequency for IRS2540C?

The IRS2540C operates at a fixed internal switching frequency of approximately 100 kHz. This value is not user-adjustable and is optimized for gate drive strength, EMI performance, and thermal dissipation in high-side buck configurations. External frequency programming is not supported.

Can IRS2540C drive a P-channel MOSFET in low-side configuration?

No. The IRS2540C is specifically designed as a high-side N-channel MOSFET driver with a floating VS terminal and bootstrap-compatible HO output. It lacks the logic inversion and drive architecture required for direct P-channel low-side control. Using it in low-side configuration violates its functional specification.

Is an external bootstrap diode and capacitor required for normal operation?

Yes. A bootstrap diode (e.g., 1N4148) and capacitor (typically 0.1–0.22 µF, 25 V X7R) must be connected between VCC and VS to sustain the floating high-side gate drive voltage during each switching cycle. Omission causes immediate HO output failure and potential MOSFET misfiring.

Does IRS2540C support analog or PWM dimming natively?

No. The IRS2540C does not include native dimming interfaces. Dimming functionality requires external circuitry-such as a current-source modulator on the CS pin or a sync-controlled MOSFET in series with the LED string-to adjust average LED current while maintaining regulation stability.

IRS2540C Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Bulk

Product Status:: Obsolete

Type:: -

Topology:: -

Internal Switch(s):: -

Number of Outputs:: -

Voltage - Supply (Min):: -

Voltage - Supply (Max):: -

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: -

Dimming:: -

Applications:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

IRS2540C FAQ

1.How can I place an order for IRS2540C through Aetrix?

Please submit a Request for Quotation (RFQ) for IRS2540C 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 IRS2540C reliable?

The price and inventory of IRS2540C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IRS2540C is usually 5 days.

3.What payment methods are accepted for IRS2540C?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IRS2540C transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IRS2540C?

IRS2540C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IRS2540C 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 IRS2540C?

For technical support, including IRS2540C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IRS2540C requirements.

6.How does Aetrix verify that IRS2540C is sourced from the original manufacturer or authorized distributors?

All IRS2540C 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 IRS2540C meets industry standards.

7.What is the process for return or replacement of IRS2540C?

All IRS2540C units undergo pre-shipment inspection (PSI). If there is an issue with IRS2540C, 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 IRS2540C part is unused and in its original packaging.

Return procedure for IRS2540C:

1.Submit a request within 90 days.

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

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