Infineon Technologies TLD2314ELXUMA1

Overview

TLD2314ELXUMA1 from Infineon Technologies is a 3-channel high-side LED current source IC designed for automotive exterior and interior lighting. It delivers up to 120 mA per channel with ±7% output current accuracy at RSET = 12 kΩ, operates from 5.5 V to 40 V supply, and integrates open-load and short-to-GND diagnosis. It drives red LED chains (e.g., 3 LEDs/channel) in tail/brake lights and ambient RGB lighting.

For engineers reviewing the TLD2314ELXUMA1 datasheet, TLD2314ELXUMA1 pinout, TLD2314ELXUMA1 application, or TLD2314ELXUMA1 equivalent, key selection factors include channel count, high-side current sourcing capability, integrated diagnostics (DEN-controlled), thermal protection, and PG-SSOP-14 package with exposed heatslug for automotive-grade thermal management.

Technical Context

The device implements three independent high-side current sources with external RSET-based current programming and internal thermal shutdown. Each channel features dedicated IN_SETx pins for precision current setting and OUTx outputs capable of sustaining up to 40 V load voltage.

Diagnosis is controlled via the DEN pin, enabling or disabling open-load detection and short-to-GND fault reporting on the ST pin. The internal supply regulates from VS, supporting undervoltage lockout at 5 V and reverse polarity protection without external components.

Key Specifications

Pinout & Package

Package: PG-SSOP-14 with exposed thermal pad (EP), RoHS-compliant, moisture sensitivity level MSL3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 3-channel high-side LED driver applications.

Compared with ASL3416SHN and TLD2035EL, TLD2314ELXUMA1 uniquely balances channel count, hardware-diagnostic flexibility via DEN, and thermal performance in a single PG-SSOP-14 package-making it optimal for cost-sensitive, diagnosis-aware automotive lighting modules.

Availability

TLD2314ELXUMA1 is available at Aetrix Electronics and suitable for automotive tail/brake light control, interior ambient lighting, side marker illumination, and dashboard backlighting requiring stable component supply across production lifecycles.

Supply support for TLD2314ELXUMA1 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 automotive qualification expertise.

The LITIX™Basic product line delivers robust, AEC-Q100-qualified LED drivers for cost-sensitive automotive lighting, emphasizing integrated protection, diagnosis, and thermal resilience without MCU dependency.

FAQ

What is the maximum continuous output current per channel?

The TLD2314ELXUMA1 supports up to 120 mA per channel continuously, provided thermal resistance (RthJA) remains ≤45 K/W on a 2s2p PCB. At 60 mA nominal (e.g., 3 red LEDs/channel), junction temperature stays within −40°C to +150°C across 8–18 V supply. Derating is required above 125°C ambient.

How does the DEN pin affect diagnosis functionality?

The DEN pin enables or disables open-load and short-to-GND detection: diagnosis activates when VDEN exceeds VDEN(act) (typically VS − 6 V), and deactivates below VDEN(dis). It does not affect output switching - channels operate independently of DEN state after power-on reset completes.

Can the TLD2314ELXUMA1 drive white LEDs directly?

Yes, it can drive white LEDs directly when forward voltage (VF) per string is ≤36 V (e.g., 10×3.6 V white LEDs at 25°C). Total VF must remain below VS − 2 V to maintain regulation. Thermal design must accommodate higher power dissipation versus red LEDs due to higher VF and lower efficacy.

Is external reverse polarity protection required?

No. The device withstands −16 V on the VS pin per absolute maximum ratings, providing inherent reverse-battery protection. This eliminates the need for an external series Schottky diode in automotive installations where battery terminal reversal may occur during service.