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

Infineon Technologies ILD4001E6327HTSA1

Name: ILD4001E6327HTSA1
Brand: Infineon Technologies
SKU: ILD4001E6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ILD4001E6327HTSA1

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: SC-74, SOT-457

Datasheet:: ILD4001E6327HTSA1.pdf

Description:: IC LED DRIVER CTRLR PWM SC74

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ILD4001E6327HTSA1 from Infineon Technologies is a hysteretic buck LED controller IC designed to drive external bipolar or MOSFET power stages in industrial constant-current LED lighting systems. It operates from 4.5 V to 40 V input, delivers ±3% output current accuracy via external sense resistor, supports analog/PWM dimming through its multifunctional EN/PWM pin, and integrates overvoltage protection and thermal shutdown for LED safety in halogen-replacement and architectural lighting.

For engineers reviewing the ILD4001E6327HTSA1 datasheet, ILD4001E6327HTSA1 pinout, ILD4001E6327HTSA1 application, or ILD4001E6327HTSA1 equivalent, key selection considerations include its SC-74 package, 200–500 kHz adjustable switching frequency, 100 mV sense threshold with ±15% hysteresis, 1.2 V minimum voltage overhead (V_CE), and 200 nA standby current at 4.5–40 V supply.

Technical Context

The ILD4001E6327HTSA1 implements a fixed-frequency hysteretic control architecture with internal bandgap reference stabilization, enabling stable LED current regulation across –40 °C to +150 °C junction temperature. Its push-pull output stage drives external switching transistors directly, while the multifunctional EN/PWM pin accepts logic-level enable signals and 100–1000 Hz PWM waveforms for brightness control.

Overvoltage protection triggers at 42 V on Vs, forcing output disable; thermal shutdown activates between 115 °C and 135 °C. The 100 mV Isense threshold and ±15% hysteresis define current regulation precision and ripple rejection, and the 1.2 V V_CE requirement sets minimum headroom for external transistor saturation.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.5 V to 40 V - supports wide-range industrial DC supplies including 12 V, 24 V, and 36 V rails
Output Current Accuracy	±3% typical - ensures consistent LED brightness across temperature and unit variation
Sense Threshold	100 mV with ±15% hysteresis - defines current setpoint and stabilizes regulation against noise
Switching Frequency	200 kHz typical (up to 500 kHz) - balances EMI, inductor size, and efficiency in buck topology
Standby Current	<200 nA at EN = 0 V - enables ultra-low-power off-state in battery-backed or energy-sensitive systems
Voltage Overhead (V_CE)	1.2 V min at I_out < 10 mA - determines minimum saturation voltage required for external transistor
Thermal Shutdown	115–135 °C - protects IC and LEDs during sustained overload or poor heatsinking

Pinout & Package

ILD4001E6327HTSA1 is housed in an SC-74 (SOT23-6) plastic surface-mount package with 0.95 mm pitch, optimized for compact LED driver PCB layouts and thermal performance in industrial lighting modules.

Pin/Terminal	Circuit Role	Design Meaning
1 (Vs)	Supply Input	Primary DC input connection; must be decoupled near pin with ≥1 µF ceramic capacitor
2 (GND)	Ground Reference	Analog and power ground return; requires low-impedance PCB plane connection
3 (EN / PWM)	Enable & Dimming Input	Logic-compatible control pin: high = on, low = off; also accepts PWM for brightness adjustment
4 (Vdrive)	Power Stage Driver Output	Push-pull gate/base driver output for external NPN/P-channel or N-channel switch
5 (GND)	Ground Reference	Second ground terminal; must be tied to Pin 2 at PCB level for low-noise operation
6 (Isense)	Current Sense Input	High-impedance node monitoring voltage across external sense resistor to regulate LED current

Key Features

Feature	Design Value
Integrated Push-Pull Output Stage	Drives external bipolar or MOSFET switches directly without external level-shifting or gate drivers
Soft-Start Capability	Prevents inrush current and LED flash during power-up by gradually ramping output current
Analog + PWM Dimming Support	Single-pin EN/PWM interface enables both DC bias dimming and precise pulse-width-controlled brightness
Overvoltage Protection (OVP)	Disables output at Vs ≥ 42 V to prevent damage to downstream LEDs and external FETs
Thermal Shutdown with Hysteresis	Shuts down at 115–135 °C and re-enables only after cooling below hysteresis threshold (~105 °C)

Applications

Industrial LED Lighting

Halogen Lamp Replacement

Use Scenario: High-reliability LED luminaires for factory floor, warehouse, and outdoor area lighting operating from 24 V DC industrial power buses.

IC Role / Device Role / Timing Role: Constant-current buck controller managing external MOSFET and inductor to deliver stable 350 mA LED current despite input voltage fluctuations.

Use Value: ±3% current accuracy and thermal shutdown ensure uniform lumen output and long-term reliability under continuous operation at elevated ambient temperatures.

Use Scenario: Retrofit LED modules replacing 12 V/24 V halogen spotlights in retail displays and hospitality environments.

IC Role / Device Role / Timing Role: Primary LED current regulator using SC-74 footprint to minimize board space while supporting analog dimming compatibility with legacy wall dimmers.

Use Value: 100 mV sense threshold and soft-start eliminate visible turn-on flicker, meeting aesthetic requirements of architectural lighting installations.

Signal & Marker Lighting

Commercial Outdoor Lighting

Use Scenario: Step-edge, exit-way, and navigation markers in stairwells and emergency egress paths requiring fail-safe illumination.

IC Role / Device Role / Timing Role: Safety-critical current source with OVP and thermal shutdown ensuring LED operation remains within safe limits even during fault conditions.

Use Value: 42 V overvoltage clamp and 150 °C max junction rating support robustness in unregulated or surge-prone AC/DC adapter outputs.

Use Scenario: Streetlight and parking lot luminaires powered from 36 V DC solar-charged battery banks with variable load profiles.

IC Role / Device Role / Timing Role: Adjustable-frequency buck controller enabling optimization of inductor size and EMI filtering for outdoor-rated enclosures with limited thermal dissipation.

Use Value: 200–500 kHz switching range allows trade-off between magnetic component volume and conducted emissions compliance in Class B EMC environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AL8862SP-13	Boost topology; integrated MOSFET; 60 V input; no external sense resistor	Designed for boost-based LED strings where input < output voltage; lacks buck capability and external switch flexibility	Select when driving higher-V_f LED strings from low-voltage sources (e.g., 12 V → 36 V)
LM3409MH/NOPB	Buck controller with current-mode PWM; 6–42 V input; 1.25 V sense threshold; requires external compensation	Higher sense voltage reduces current-sense resistor power loss but demands more layout care for noise immunity	Prefer when tighter EMI control and programmable frequency are required over ultra-low standby current

Compared with AL8862SP-13 and LM3409MH/NOPB, the ILD4001E6327HTSA1 uniquely combines hysteretic control simplicity, 200 nA standby current, and SC-74 integration for cost-sensitive industrial buck LED drivers-without compromising thermal or overvoltage safety margins.

Availability

ILD4001E6327HTSA1 is available at Aetrix Electronics and suitable for industrial LED lighting, halogen replacement modules, and signal/marker lighting requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.

Supply support for ILD4001E6327HTSA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

The ILD4001 belongs to Infineon's industrial LED driver product line, engineered specifically for robust, low-component-count constant-current regulation in non-life-critical lighting applications where reliability, thermal resilience, and dimming flexibility are prioritized.

FAQ

What is the recommended inductor value for ILD4001E6327HTSA1 in a 350 mA LED application?

Per the target datasheet, a 100 µH inductor is specified for 350 mA LED current with 12 V input and three-series LEDs. Inductor value directly sets switching frequency and ripple: lower values increase frequency and reduce size but raise peak current stress on the external switch. Datasheet Table 5 confirms 200 kHz operation under those conditions.

Can ILD4001E6327HTSA1 drive MOSFETs directly without external gate drivers?

Yes-the ILD4001E6327HTSA1 integrates a push-pull output stage on Pin 4 (Vdrive) capable of directly driving the gate of N-channel MOSFETs or base of NPN transistors. Drive strength supports typical gate capacitances up to 2 nF; for larger FETs or faster switching, external buffering may improve rise/fall times.

Does ILD4001E6327HTSA1 support analog dimming, and how is it implemented?

Yes-its EN/PWM pin (Pin 3) accepts analog voltage levels between 0.5 V and 2.5 V to linearly adjust LED current from ~10% to 100%. Below 0.5 V disables output; above 2.5 V enables full current. This mode avoids PWM-induced EMI and is compatible with resistive potentiometer or DAC-based dimming interfaces.

What is the maximum allowable sense resistor value for 350 mA LED current?

With a 100 mV sense threshold, the maximum sense resistor is R_sense = 100 mV / 350 mA = 286 mΩ. Using a standard 0.27 Ω resistor yields 370 mA nominal current. Lower resistance improves power efficiency and thermal margin but reduces current regulation resolution and noise immunity.

ILD4001E6327HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-74, SOT-457

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Type:: DC DC Controller

Topology:: Step-Down (Buck)

Internal Switch(s):: No

Number of Outputs:: 1

Voltage - Supply (Min):: 4.5V

Voltage - Supply (Max):: 40V

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: 500kHz

Dimming:: Analog, PWM

Applications:: Lighting

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-74

ILD4001E6327HTSA1 FAQ

1.How can I place an order for ILD4001E6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ILD4001E6327HTSA1 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 ILD4001E6327HTSA1 reliable?

The price and inventory of ILD4001E6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILD4001E6327HTSA1 is usually 5 days.

3.What payment methods are accepted for ILD4001E6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILD4001E6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ILD4001E6327HTSA1?

ILD4001E6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ILD4001E6327HTSA1 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 ILD4001E6327HTSA1?

For technical support, including ILD4001E6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILD4001E6327HTSA1 requirements.

6.How does Aetrix verify that ILD4001E6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All ILD4001E6327HTSA1 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 ILD4001E6327HTSA1 meets industry standards.

7.What is the process for return or replacement of ILD4001E6327HTSA1?

All ILD4001E6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with ILD4001E6327HTSA1, 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 ILD4001E6327HTSA1 part is unused and in its original packaging.

Return procedure for ILD4001E6327HTSA1:

1.Submit a request within 90 days.

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

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