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

Infineon Technologies ILD1150XUMA1

Name: ILD1150XUMA1
Brand: Infineon Technologies
SKU: ILD1150XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ILD1150XUMA1

Manufacturer:: Infineon Technologies

Category:: LED Drivers

Package:: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Datasheet:: ILD1150XUMA1.pdf

Description:: IC LED DRIVER CTRLR PWM 14SSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ILD1150XUMA1 from Infineon Technologies is a multitopology high-power LED DC/DC controller IC designed for industrial lighting systems. It supports boost, buck, buck-boost, SEPIC, and flyback topologies; delivers constant-current or constant-voltage regulation; operates from 4.75 V to 45 V input; features 100–500 kHz adjustable switching frequency; and integrates a 5 V LDO, open-circuit LED diagnostics (ST pin), and PWM dimming control.

For engineers reviewing the ILD1150XUMA1 datasheet, ILD1150XUMA1 pinout, ILD1150XUMA1 application in LED driver design, or ILD1150XUMA1 equivalent for industrial constant-current sources, this page provides verified topology flexibility, thermal protection behavior, current-sense accuracy (300 mV threshold), and synchronization capability with external clock sources.

Technical Context

The ILD1150XUMA1 implements current-mode control with slope compensation and leading-edge blanking to stabilize regulation across wide LED current ranges. Its dual feedback architecture supports both voltage (FBH/FBL) and overvoltage (OVFB) monitoring, while the ST pin provides open-load fault signaling via open-drain output.

It integrates an internal 5 V LDO (IVCC) for gate drive and biasing, accepts EN/PWMI for enable or analog/PWM dimming, and uses SWCS for peak current sensing at 300 mV reference-enabling precise LED current control without external amplification.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4.75 V to 45 V - supports wide industrial supply rails including 12 V, 24 V, and 48 V systems.
Switching Frequency	100 kHz to 500 kHz - adjustable via resistor or synchronizable to external clock for EMI reduction.
Current Sense Threshold	300 mV - enables accurate, low-loss LED current regulation with minimal sense resistor power dissipation.
Shutdown Current	<10 µA - ensures ultra-low power consumption during standby or system sleep modes.
Integrated LDO Output	5 V / 50 mA - powers internal circuitry and external gate drivers without auxiliary supply.
Diagnostic Output	Open-drain ST pin - signals LED open-circuit faults with pull-up required; simplifies system-level fault logging.
Thermal Shutdown	Active at T_j ≥ 150 °C - protects MOSFET and PCB during overload or poor heatsinking conditions.

Pinout & Package

ILD1150XUMA1 is housed in a thermally enhanced PG-SSOP-14 package with exposed pad (EP) for PCB-level heat dissipation. The EP must be connected to GND via thermal vias for optimal junction temperature management.

Pin/Terminal	Circuit Role	Design Meaning
1 IVCC	Internal LDO output	Bias and gate-drive supply; requires local 100 nF ceramic bypass capacitor to GND.
2 SWO	Switch gate driver output	Drives external N-channel MOSFET gate; logic-level compatible with standard Si MOSFETs.
3 SGND	Current-sense ground return	Separate ground path for SWCS to avoid noise coupling into current regulation loop.
4 SWCS	Peak current sense input	Monitors switch current via external shunt; 300 mV threshold sets LED current limit directly.
5 PWMO	PWM dimming output	Drives external dimming MOSFET; supports high-frequency PWM dimming up to 20 kHz.
6 FBH	Non-inverting feedback input	Connects to positive side of LED string or voltage divider for CV mode regulation.
7 FBL	Inverting feedback input	Connects to negative side of LED string or divider midpoint for differential error amplification.
8 COMP	Compensation network node	Connects RC network to stabilize current-mode control loop; determines bandwidth and phase margin.
9 OVFB	Overvoltage protection input	Monitors output voltage via resistive divider; triggers shutdown if exceeds set threshold.
10 ST	Status diagnostic output	Open-drain fault indicator; pulls low on LED open-circuit, overtemperature, or overvoltage events.
11 FREQ/SYNC	Frequency select or sync input	Resistor-to-GND sets frequency; AC-coupled external clock enables synchronization.
12 GND	Power ground	Main system ground reference; connects to PCB ground plane and EP for thermal conduction.
13 EN/PWMI	Enable or PWM dimming input	Logic-high enables IC; PWM signal modulates LED brightness without altering regulation loop.
14 IN	Main supply input	Primary power input (4.75–45 V); feeds internal LDO and bias circuits.

Key Features

Feature	Design Value
Multitopology support	Enables boost, buck, buck-boost, SEPIC, and flyback configurations using same IC-reduces BOM count across lighting platforms.
300 mV current sense	Minimizes power loss in sense resistor and improves current accuracy across temperature and line variations.
Integrated 5 V LDO	Eliminates need for external bias supply; powers gate driver and internal logic with 50 mA output capability.
Open-circuit LED detection	ST pin asserts fault condition when no LED load is present-prevents unregulated voltage rise and component stress.
Soft-start function	Internally limits inrush current and output voltage overshoot during startup-protects LEDs and MOSFETs.

Applications

Industrial LED Lighting

Architectural Outdoor Lighting

Use Scenario: High-bay fixtures in warehouses and factories requiring stable 1–5 A LED current across varying AC line inputs.

IC Role / Device Role / Timing Role: Primary DC/DC controller managing constant-current regulation and thermal derating in boost topology.

Use Value: Maintains ±3% LED current accuracy over 4.75–45 V input range and −40 °C to +125 °C ambient, ensuring consistent lumen output.

Use Scenario: Streetlight and façade lighting with IP66-rated drivers needing robust fault handling and EMI compliance.

IC Role / Device Role / Timing Role: Multitopology controller implementing buck-boost configuration for wide input variation (e.g., solar-charged battery backup).

Use Value: Synchronization capability (FREQ/SYNC pin) enables spread-spectrum operation to meet CISPR-15 Class B conducted emissions limits.

Signal & Marker Lighting

Halogen Replacement Modules

Use Scenario: Exit signage and step lighting where LED open-circuit detection prevents hazardous overvoltage failure modes.

IC Role / Device Role / Timing Role: Fault-aware LED driver with ST pin reporting open-load condition to building management system.

Use Value: ST pin's open-drain output interfaces directly with microcontroller GPIO, enabling real-time LED health monitoring without extra circuitry.

Use Scenario: Retrofit MR16 and GU10 lamps replacing 12–24 V halogen bulbs with constant-current LED arrays.

IC Role / Device Role / Timing Role: Buck-mode controller delivering 350 mA–700 mA with PWM dimming compatibility for TRIAC-dimmable modules.

Use Value: EN/PWMI pin accepts trailing-edge dimmer signals, allowing seamless integration into legacy residential dimming infrastructure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM3410XMF/NOPB	Single-topology (boost-only); no OVFB or ST pin; 1.25 MHz fixed frequency; no synchronization.	Limited to low-power boost LED drivers (<500 mA); lacks industrial-grade diagnostics and thermal protection.	Select only for cost-sensitive, low-current consumer lighting where multitopology and fault reporting are unnecessary.
MAX16832AASA+	Supports buck/boost/flyback; includes 5 V LDO; but no integrated soft-start or open-circuit detection.	Requires external comparator for LED open-circuit detection; higher external component count for equivalent functionality.	Prefer when existing designs already use Maxim timing and layout practices; verify ST-equivalent fault signaling via external circuit.

Compared with LM3410XMF/NOPB and MAX16832AASA+, ILD1150XUMA1 uniquely combines multitopology flexibility, built-in open-circuit diagnostics (ST), and 300 mV current-sense accuracy-making it optimal for industrial LED drivers requiring field-reliable fault handling and thermal resilience.

Availability

ILD1150XUMA1 is available at Aetrix Electronics and suitable for industrial LED lighting, architectural outdoor fixtures, signal/marker lighting, and halogen replacement modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ILD1150XUMA1 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 global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

The ILD1150 belongs to Infineon's industrial LED controller product line, engineered specifically for high-reliability constant-current LED drivers operating in harsh environments-from factory floors to outdoor infrastructure-with emphasis on thermal robustness and fault diagnostics.

FAQ

What topologies does the ILD1150XUMA1 support, and how is topology selection implemented?

The ILD1150XUMA1 supports boost, buck, buck-boost, SEPIC, and flyback topologies. Topology selection is determined entirely by external component configuration-no internal register programming or pin strapping is required. For example, connecting the SWO output to the LED anode and FBL to cathode configures boost mode, while routing SWO to inductor input and FBH/FBL across LED string enables buck operation. Datasheet Section 10 provides schematic examples for each topology.

How does the ST (Status) pin indicate LED open-circuit conditions?

The ST pin is an open-drain output that pulls low when an LED open-circuit fault is detected-triggered by absence of current through SWCS during normal switching cycles. A pull-up resistor (typically 10 kΩ to IVCC or system VCC) is required. The pin remains low until the fault clears and the device completes a full restart cycle, including soft-start reinitialization. This behavior is confirmed in Section 9.1 and Figure 17 of the datasheet.

Can the ILD1150XUMA1 operate without the IVCC capacitor, and what is its minimum recommended value?

No-the IVCC pin requires a minimum 100 nF ceramic capacitor connected between IVCC and SGND (not GND) to ensure stable LDO regulation and gate-driver performance. Omitting this capacitor causes erratic switching, increased jitter, and potential thermal shutdown due to insufficient internal biasing. The datasheet specifies X7R or better dielectric with ≤100 mΩ ESR and placement within 3 mm of the pin.

What is the functional difference between EN/PWMI and PWMO pins in dimming applications?

EN/PWMI serves as either a logic enable input (high = active) or a direct PWM dimming signal input (0–100% duty cycle), controlling average LED current at system level. PWMO is a dedicated gate-drive output for an external MOSFET used in high-side or low-side PWM dimming stages-enabling independent, high-frequency (up to 20 kHz) dimming separate from the main regulation loop. Both functions can be used simultaneously for hybrid dimming schemes.

ILD1150XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 14-LSSOP (0.154", 3.90mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Type:: DC DC Controller

Topology:: Flyback, SEPIC, Step-Down (Buck), Step-Up (Boost)

Internal Switch(s):: No

Number of Outputs:: 1

Voltage - Supply (Min):: 4.75V

Voltage - Supply (Max):: 45V

Voltage - Output:: -

Current - Output / Channel:: -

Frequency:: 100kHz ~ 500kHz

Dimming:: PWM

Applications:: Lighting

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SSOP-14-3

ILD1150XUMA1 FAQ

1.How can I place an order for ILD1150XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for ILD1150XUMA1 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 ILD1150XUMA1 reliable?

The price and inventory of ILD1150XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ILD1150XUMA1 is usually 5 days.

3.What payment methods are accepted for ILD1150XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ILD1150XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ILD1150XUMA1?

ILD1150XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ILD1150XUMA1 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 ILD1150XUMA1?

For technical support, including ILD1150XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ILD1150XUMA1 requirements.

6.How does Aetrix verify that ILD1150XUMA1 is sourced from the original manufacturer or authorized distributors?

All ILD1150XUMA1 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 ILD1150XUMA1 meets industry standards.

7.What is the process for return or replacement of ILD1150XUMA1?

All ILD1150XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with ILD1150XUMA1, 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 ILD1150XUMA1 part is unused and in its original packaging.

Return procedure for ILD1150XUMA1:

1.Submit a request within 90 days.

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

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