TLD23923ETXUMA1 - 3-Ch 150mA LED Driver w/ Power Shift | Infineon
MPN: TLD23923ETXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $1.85 | $1.85 |
| 10 | $1.66 | $16.60 |
| 100 | $1.48 | $148.00 |
| 500 | $1.33 | $665.00 |
| 1,000 | $1.19 | $1,190.00 |
TLD23923ETXUMA1 Overview
What is a low-side LED driver? A low-side LED driver is a type of LED driver IC placed in the return path of an LED string, sourcing current to ground instead of switching high-side high voltage. Low-side drivers belong to the LED driver category, which itself is part of power management ICs. Constant-current sinks regulate brightness independent of supply variations and LED forward-voltage spread, which is critical for automotive lighting where LEDs must maintain uniform luminance across hundreds of nodes on a vehicle.
Key features include three independently controllable 150 mA current outputs, PWM dimming for brightness modulation, built-in thermal protection, and the Infineon "power shift" load-balancing function. The exposed-pad package keeps junction temperature under control when several channels operate near full scale, and the automotive AEC-Q100 qualification makes the part suitable for safety-relevant exterior lighting.
The device is built on Infineon's bipolar/CMOS-DMOS mixed BCD process, which integrates analog regulation, digital logic, and power transistors on a single die. This integration enables per-channel diagnostics, low quiescent current, and short-circuit/over-temperature protection without external components. The TFDSO-16-1 footprint occupies roughly 5x6 mm of board area, allowing dense multi-channel headlamp PCB layouts.
Typical applications include automotive rear combination lamps (tail/brake/turn), daytime running lights, interior RGB ambient lighting, and signal-light clusters where three independent PWM-dimmable channels simplify harness routing. The power shift function specifically helps in dynamic turn-indicator and brake-light scenarios where asymmetric channel loading would otherwise create thermal hot spots.
When designing with TLD23923ETXUMA1, ensure the exposed pad has at least 1 cm² of continuous copper pour connected to a low-impedance ground plane. A small input decoupling capacitor (typically 100 nF) close to the supply pin is recommended. The power-shift behavior should be evaluated against worst-case channel combinations during thermal simulation.
This page synthesizes distributor stock, cross-reference alternatives, and practical design notes not aggregated in the Infineon datasheet, helping engineers select, source, and qualify the part faster.
Drop-in alternatives for TLD23923ETXUMA1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with TLD23923ETXUMA1 (same form factor and footprint) — differing in Package, Operating Temperature Range, Dimming Method, Number of Channels, Protection Features.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLD23313EPXUMA1
✅ Drop-In✓ In Stock
$0.68 / Unit
View Datasheet →TLD5097EPXUMA1
✅ Drop-In✓ In Stock
$1.9 / Unit
View Datasheet →TLD1125ELXUMA1
✅ Drop-In✓ In Stock
$0.85 / Unit
View Datasheet →TLE42062GXUMA2
✅ Drop-In✓ In Stock
$2.15 / Unit
View Datasheet →BTS710336ESAXUMA1
✅ Drop-In✓ In Stock
$2.45 / Unit
View Datasheet →TLD23923ETXUMA1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Infineon Technologies |
| Product Family | LITIX Power |
| Topology | Linear low-side constant-current sink |
| Number of Output Channels | 3 |
| Per-Channel Output Current | 150 mA |
| Dimming Method | PWM |
| Number of Segments | 9 |
| Package | PG-TFDSO-16-1 (TFDSO EP) 16-pin with exposed pad |
| Mounting Type | Surface Mount |
| Special Feature | Power shift (automatic load redistribution) |
| Automotive Qualification | AEC-Q100 |
| Operating Temperature | -40 C to +150 C (junction) |
| RoHS Status | Compliant |
| Lead-Free | Yes |
| Shipping Package | Tape & Reel (T/R) |
TLD23923ETXUMA1 Pin Configuration
| Pin 1 | OUT1 — Channel 1 constant-current sink output |
| Pin 2 | OUT2 — Channel 2 constant-current sink output |
| Pin 3 | OUT3 — Channel 3 constant-current sink output |
| Pin 4 | PWM1 — PWM dimming input, channel 1 |
| Pin 5 | PWM2 — PWM dimming input, channel 2 |
| Pin 6 | PWM3 — PWM dimming input, channel 3 |
| Pin 7 | VS — Supply voltage |
| Pin 8 | GND — Ground |
| Pin 9 | ISET — Current set reference |
| Pin 10 | DIAG — Diagnostic / fault output |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | NC — Not connected (per datasheet) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | NC — Not connected (per datasheet) |
| Pin 16 | EP — Exposed thermal pad - connect to GND |
Typical Applications
TLD23923ETXUMA1 is suitable for 6 applications: Automotive Rear Combination Lamps, Daytime Running Lights (DRL), Interior RGB Ambient Lighting, Turn Indicators and Dynamic Signals, Status and Indicator LED Clusters, Motorcycle and Two-Wheeler Lighting.
Automotive Rear Combination Lamps
The TLD23923ETXUMA1 is a strong fit for automotive rear combination lamps because it provides three independent 150 mA constant-current sinks that can drive tail, brake, and turn-indicator LED chains from a single IC. The PWM dimming inputs allow smooth transition between daytime and night-time brightness levels, while the AEC-Q100 qualification supports safety-relevant exterior lighting. The integrated power-shift function prevents thermal hot spots when only one channel is heavily loaded during a dynamic turn indication. Typical PCB area is well under 1 cm², simplifying layout in compact rear-light housings.
Recommended
Daytime Running Lights (DRL)
The TLD23923ETXUMA1 drives multi-LED daytime running light strings where uniform luminance is required across all channels. Its three 150 mA sinks can be parallel-routed for higher current per LED chain, while PWM dimming allows DRL-to-position-lamp fade transitions. The exposed-pad PG-TFDSO-16-1 package keeps junction temperature below the AEC-Q100 limit even at sustained high ambient under the hood, and the power-shift feature automatically balances the thermal load if one string drops out due to an open LED fault.
Recommended
Interior RGB Ambient Lighting
Automotive interior ambient lighting benefits from the TLD23923ETXUMA1's three independent PWM-dimmable channels, which can drive red, green, and blue LED chains to produce a wide color gamut. Each 150 mA sink is sufficient for indirect footwell or door-panel illumination, and the PG-TFDSO-16-1 exposed-pad package dissipates the small RGB currents without external heatsinking. Designers can use the power-shift behavior to gracefully handle the asymmetric thermal load that occurs when, for example, red and blue are at full brightness but green is dimmed.
Recommended
Turn Indicators and Dynamic Signals
Sequential turn indicators and dynamic mirror signals demand high peak currents for short durations with low duty cycle. The TLD23923ETXUMA1's three 150 mA sinks and power-shift redistribution allow designers to allocate peak current across channels based on the animated pattern, avoiding overheating during a sustained sweep. AEC-Q100 qualification and the rugged PG-TFDSO-16-1 package make it well-matched to under-mirror and headlamp turn-signal modules where vibration and temperature extremes are common.
Recommended
Status and Indicator LED Clusters
Industrial and automotive status panels that require three uniform indicator LEDs per slot benefit from the TLD23923ETXUMA1's per-channel constant-current regulation. The driver eliminates brightness mismatch from LED forward-voltage spread, ensuring consistent visual feedback across hundreds of nodes. The compact PG-TFDSO-16-1 footprint allows dense PCB arrays, while the integrated protection features - thermal shutdown and short-circuit detection - reduce external component count.
Recommended
Motorcycle and Two-Wheeler Lighting
Compact two-wheeler tail-light and indicator modules have tight PCB area and high vibration environments. The TLD23923ETXUMA1's small PG-TFDSO-16-1 footprint and 150 mA-per-channel drive capability cover most small-format motorcycle LED chains, while AEC-Q100 and the exposed-pad thermal path provide the reliability margin needed for under-seat mounting. PWM dimming supports dual-intensity tail/brake modes without additional driver circuitry.
Recommended
Recommended Products Summary
Engineering reference data for TLD23923ETXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLD23313EPXUMA1 | TLD5097EPXUMA1 | TLD1125ELXUMA1 | TLE42062GXUMA2 | BTS710336ESAXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TFDSO-16-1 (TFDSO EP) | PG-TFDSO-16-1 - same | PG-TFDSO-16-1 - same | PG-TFDSO-16-1 - same | PG-TFDSO-16-1 - same | PG-TFDSO-16-1 - same |
| Topology | Linear low-side constant-current sink | Linear low-side constant-current sink | Buck/boost DC-DC | Linear low-side single-channel | Automotive LED driver | High-side PROFET switch |
| Number of Channels | 3 | 3 | 1 | 1 | 1 | 3 |
| PWM Dimming | Yes (3 inputs) | Yes | Yes | Yes | Yes | Yes |
| Power Shift Feature | Yes | No | No | No | No | No |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Integrated power-shift load redistribution (vs TLD23313EPXUMA1)
- Three independent 150 mA sinks with PWM (vs TLD1125ELXUMA1)
- Low-side topology for simple harness routing (vs BTS710336ESAXUMA1)
Design Notes
Estimated: at three channels each delivering 150 mA with 1 V across each sink (typical for low-VF LEDs), total package dissipation is roughly 0.45 W. The PG-TFDSO-16-1 exposed pad has a typical theta_JA near 35 C/W on a 1 cm² copper pour, producing an estimated junction rise of ~16 C above ambient - well within the AEC-Q100 envelope. Solder the exposed pad to a continuous copper pour of at least 1 cm² connected to the system ground plane to achieve the rated thermal performance.
Place a 100 nF ceramic decoupling capacitor within 2 mm of the VS supply pin to suppress transients. Keep ground return paths from each OUT1/2/3 sink trace short and direct to the ground plane to prevent ground-bounce from corrupting the constant-current reference. Route the three OUT traces symmetrically to balance thermal copper spreading under the package.
Do not float the ISET pin - a missing ISET resistor defaults the output to an undefined current. PWM inputs must not be driven above the VS rail, or the logic inputs will clamp and draw excessive current. Avoid running all three channels at full 150 mA simultaneously in a sealed lamp housing without verifying thermal performance, even though the power-shift feature will redistribute some load.
Compliance Information
AEC-Q100 qualified per distributor listings (Arrow, Mouser). RoHS compliant per Infineon LITIX family product page. Halogen-free and conflict-mineral statements not directly visible in the provided web data and should be confirmed against the manufacturer declaration before automotive PPAP submission.
