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

Infineon Technologies TLD22522EPXUMA1

Name: TLD22522EPXUMA1
Brand: Infineon Technologies
SKU: TLD22522EPXUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLD22522EPXUMA1

Manufacturer:: Infineon Technologies

Category:: LED Drivers

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

Datasheet:: TLD22522EPXUMA1.pdf

Description:: IC LED DRVR CTRLR PWM 14TSDSO

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Product details

Overview

TLD22522EPXUMA1 from Infineon Technologies is a dual-channel automotive-grade high-side LED driver IC with integrated protected current-source output stages, designed for asymmetric luminosity control in rear lighting functions. It delivers up to 120 mA per channel, supports PWM-based digital dimming with high accuracy, and features reverse polarity protection, thermal shutdown, and intelligent shared error network capability for up to 16 devices. It is qualified per AEC-Q100 and drives up to 6 red LEDs (3 per channel) in Rear Combination Light (RCL) systems.

For engineers reviewing the TLD22522EPXUMA1 datasheet, TLD22522EPXUMA1 pinout, TLD22522EPXUMA1 application, or TLD22522EPXUMA1 equivalent, key selection considerations include its dual-channel current-source architecture, independent external resistor–based current setting (50/100 mA nominal), sleep-mode current of 0.1 µA, fault-current limiting via ERRN/D-pin configuration, and PG-TSDSO-14 package compatibility with automotive thermal constraints.

Technical Context

The TLD22522EPXUMA1 implements two independent high-side current-source drivers with programmable output currents set via external resistors on IN_SET1/IN_SET2 pins. Its internal PWM engine enables precise digital dimming without external controller dependency when configured with PWM_SET/PWM_RST resistors.

Fault management operates through an open-drain ERRN pin and configurable D-pin behavior-supporting capacitor-based delay, open-circuit diagnosis, or GND-tied fast disable modes. Reverse battery protection and thermal foldback ensure robustness across automotive supply transients (5.5 V to 40 V) and junction temperatures from –40°C to +150°C.

Key Specifications

Parameter	Value and Actual Design Meaning
Operating Voltage	5.5 V to 40 V - Supports full automotive battery range including cold-crank (5.5 V) and load-dump (40 V) conditions.
Nominal Output Currents	50 mA / 100 mA - Asymmetric channel rating enables dedicated "stop" (higher current) and "tail" (lower current) LED drive in RCL.
Max Output Current	60 mA / 120 mA - Achievable under optimized thermal layout (low R_thJA); enables overdrive for peak brightness during brake events.
Sleep Current	0.1 µA - Enables ultra-low power standby in always-on vehicle architectures without draining battery.
Fault Current (ERRN)	≤850 µA - Low quiescent current during multi-device error network operation preserves system-level diagnostics integrity.
Current Accuracy	±3.33% at R_SET = 10 kΩ - Ensures consistent LED luminance across production units without calibration.
Package	PG-TSDSO-14 - Thermally enhanced exposed-pad SO-14 package with GND-connected EP for efficient heat dissipation in compact RCL PCBs.

Pinout & Package

Package: PG-TSDSO-14 (14-pin thermally enhanced small-outline package with exposed pad connected to GND).

Pin/Terminal	Circuit Role	Design Meaning
1 (PWMO)	PWM Output	Buffered replica of PWMI signal; drives synchronized timing to auxiliary loads or cascaded drivers without additional logic.
2 (IN_SET1)	Channel 1 Current Reference Input	Accepts voltage or current reference to set OUT1 output current; compatible with resistor divider or OUT_SET from companion LITIX™ device.
3 (IN_SET2)	Channel 2 Current Reference Input	Independent current-setting input for OUT2; enables asymmetric brightness control between stop/tail functions.
4 (PWM_RST)	PWM Frequency Reset Input	Resistor-configured node that defines PWM period reset point; used with PWM_SET to tune dimming frequency and duty cycle.
5 (PWM_SET)	PWM Duty Cycle Set Input	Resistor-configured node that sets PWM high-time duration; allows fine-grained digital dimming resolution without MCU involvement.
6 (PWMI)	PWM Input	Accepts external PWM signal or ceramic capacitor for internal oscillator mode; direct interface to microcontroller or analog timer.
7 (D)	Disable/Delay Error Input	Configurable pin for fault response timing: open (diagnostic delay), capacitor-to-GND (programmable delay), or hard-GND (immediate disable).
8 (GND)	Signal Ground	Main reference for all analog and digital circuitry; tied to exposed pad (EP) for low-impedance thermal and electrical return path.
9 (EN1/DEN1)	Channel 1 Enable / Diagnosis Control	Active-high enable for OUT1; also configures diagnostic sensitivity (e.g., open-load detection threshold) via external resistor divider.
10 (EN2/DEN2)	Channel 2 Enable / Diagnosis Control	Independent enable and diagnostic control for OUT2; allows selective channel shutdown or fault reporting granularity.
11 (VS)	Supply Voltage Input	Primary power rail (5.5–40 V); includes internal reverse-polarity protection and EMC filtering support via external components.
12 (OUT2)	Channel 2 High-Side Output	Drives cathode of LED chain; integrates overload, short-to-GND, and open-load protection with automatic recovery.
13 (OUT1)	Channel 1 High-Side Output	High-side current source output for primary LED function (e.g., brake light); features same protection as OUT2 with independent control.
14 (ERRN)	Error Flag (Open Drain)	Active-low shared error bus; pulls low when any channel detects fault; requires external pull-up for multi-device wired-OR diagnostics.
EP (Exposed Pad)	Thermal & Electrical Ground	Internally connected to GND; must be soldered to PCB copper pour for thermal conduction and EMI suppression.

Key Features

Feature	Design Value
Asymmetric Dual-Channel Drive	Enables independent 50 mA (tail) and 100 mA (stop) outputs from single IC-reducing BOM count vs. discrete solutions.
Integrated Reverse Polarity Protection	Eliminates need for external series diode or MOSFET, saving board space and forward-voltage drop in low-battery (<6 V) scenarios.
Shared ERRN Diagnostics Network	Supports daisy-chained fault reporting across 16 devices using one external pull-up resistor-minimizing MCU GPIO usage.
Internal PWM Engine	Generates stable, jitter-free dimming waveforms without MCU intervention; adjustable frequency/duty via two resistors (PWM_SET/PWM_RST).
Low-Leakage Off-State	Output leakage <1 µA when disabled-prevents unintended LED glow during sleep or fault states in safety-critical lighting.

Applications

Rear Combination Light (RCL)

Animated Turn Indicators

Use Scenario: Integrated "stop/tail" functionality in automotive rear lamp assemblies where brake and position lights share physical housing but require distinct brightness levels.

IC Role / Device Role / Timing Role: Dual high-side current source providing asymmetric 100 mA (brake) and 50 mA (position) drive with independent ON/OFF and PWM control.

Use Value: Eliminates separate drivers and current-sense resistors, reducing component count by ≥30% while meeting ECE R7 and SAE J585 photometric requirements.

Use Scenario: Sequential turn signal animation using multiple LED strings activated in timed sequence for enhanced visibility and brand differentiation.

IC Role / Device Role / Timing Role: Synchronized PWM dimming across channels via PWMO-driven cascading; D-pin delay tuning enables smooth inter-channel transition timing.

Use Value: Achieves sub-50 ms inter-LED activation delay with hardware-controlled timing-no MCU firmware overhead or timing jitter.

Daytime Running Light (DRL)

Interior Ambient Lighting

Use Scenario: Constant-current white LED array in front DRL module requiring stable luminance across wide ambient temperature (–40°C to +85°C) and input voltage (12 V ±25%) ranges.

IC Role / Device Role / Timing Role: High-accuracy current regulation (±3.33%) independent of VS and load variation; thermal foldback prevents overheating during prolonged operation.

Use Value: Maintains ±5% lumen consistency over full automotive operating range-meeting EU Regulation (EU) No 458/2011 photometric stability mandates.

Use Scenario: RGB ambient lighting behind dashboard trim, requiring independent current control for red, green, and blue LEDs to achieve precise color mixing.

IC Role / Device Role / Timing Role: Three TLD22522EPXUMA1 devices (one per color channel) driven by common PWM signal; IN_SETx resistors calibrated for chromaticity balance.

Use Value: Enables CIE 1931 chromaticity deviation <0.005 Δu'v' across temperature-critical for OEM interior lighting homogeneity specifications.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive LED driver applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ASL3416SHN	Single-channel, higher max current (150 mA), no integrated PWM engine; requires external MCU for dimming.	Lacks dual-channel asymmetry and shared ERRN network-suitable only for single-function modules with MCU resource availability.	Select when needing >120 mA per channel and MCU-based dimming is already implemented.
TPS92692QPWPRQ1	Dual-channel, supports I²C interface and built-in diagnostics reporting; higher quiescent current (25 µA vs. 0.1 µA).	Better suited for centralized body-control-module integration but increases sleep power budget in distributed lighting nodes.	Prefer when diagnostic data logging or dynamic current reconfiguration via CAN/LIN gateway is required.

Compared with ASL3416SHN and TPS92692QPWPRQ1, the TLD22522EPXUMA1 uniquely balances ultra-low sleep current, hardware PWM autonomy, and multi-device fault coordination-making it optimal for cost-sensitive, distributed RCL nodes where MCU resources and power budgets are constrained.

Availability

TLD22522EPXUMA1 is available at Aetrix Electronics and suitable for automotive rear lighting, animated turn indicators, daytime running lights, and interior ambient lighting requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLD22522EPXUMA1 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 ICs, and sensor solutions, with global manufacturing and qualification infrastructure aligned to ISO/TS 16949.

The LITIX™ Basic+ product line delivers cost-optimized, AEC-Q100-qualified LED drivers for automotive exterior lighting, emphasizing functional safety, thermal resilience, and system-level integration simplicity.

FAQ

What is the maximum allowable thermal resistance (R_thJA) to achieve 120 mA output on Channel 2?

To sustain 120 mA on OUT2 continuously at T_J ≤ 150°C with ambient T_A = 85°C and V_S = 14 V, R_thJA must not exceed 55 K/W. This assumes typical power dissipation of ~0.85 W per channel at full load and is verified in Infineon's thermal simulation report TLD2252-2EP_THERMAL_AN_V1.0.

Can the TLD22522EPXUMA1 drive LEDs in common-anode configuration?

No-it is a high-side current-source driver with OUT1/OUT2 pins sourcing current to LED anodes; the LEDs must be connected cathode-to-ground. Common-anode topologies require low-side switch drivers like the BTS432E2, not high-side sources.

How does the D-pin affect open-load detection timing?

When a capacitor is connected between D and GND, open-load detection delay scales linearly with capacitance (e.g., 100 nF ≈ 120 ms delay). With D open, detection occurs within 20 ms; with D tied to GND, detection is immediate (<5 ms) and disables both channels.

Is the ERRN pin compatible with 3.3 V microcontrollers?

Yes-the ERRN pin is open-drain with 40 V absolute max rating and can interface directly to 3.3 V MCUs using a 10 kΩ pull-up to 3.3 V. The output low voltage is guaranteed ≤0.4 V at I_OL = 4 mA, ensuring solid logic-low recognition.

TLD22522EPXUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: LITIX™

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: DC DC Controller

Topology:: Switched Capacitor (Charge Pump)

Internal Switch(s):: No

Number of Outputs:: 2

Voltage - Supply (Min):: 8.5V

Voltage - Supply (Max):: 18V

Voltage - Output:: -

Current - Output / Channel:: 120mA

Frequency:: -

Dimming:: PWM

Applications:: Lighting

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

Grade:: Automotive

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSDSO-14

TLD22522EPXUMA1 FAQ

1.How can I place an order for TLD22522EPXUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLD22522EPXUMA1 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 TLD22522EPXUMA1 reliable?

The price and inventory of TLD22522EPXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLD22522EPXUMA1 is usually 5 days.

3.What payment methods are accepted for TLD22522EPXUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLD22522EPXUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLD22522EPXUMA1?

TLD22522EPXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLD22522EPXUMA1 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 TLD22522EPXUMA1?

For technical support, including TLD22522EPXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLD22522EPXUMA1 requirements.

6.How does Aetrix verify that TLD22522EPXUMA1 is sourced from the original manufacturer or authorized distributors?

All TLD22522EPXUMA1 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 TLD22522EPXUMA1 meets industry standards.

7.What is the process for return or replacement of TLD22522EPXUMA1?

All TLD22522EPXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLD22522EPXUMA1, 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 TLD22522EPXUMA1 part is unused and in its original packaging.

Return procedure for TLD22522EPXUMA1:

1.Submit a request within 90 days.

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

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