TLD23623ETXUMA1 - 3-Ch 150mA LED Driver, AEC-Q100 | Infineon
MPN: TLD23623ETXUMA1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0.85 | $0.85 |
| 10 | $0.76 | $7.60 |
| 100 | $0.62 | $62.00 |
| 500 | $0.49 | $245.00 |
| 1,000 | $0.42 | $420.00 |
| 2,500 | $0.39 | $975.00 |
TLD23623ETXUMA1 Overview
A linear LED driver is an integrated circuit that regulates the current through one or more strings of LEDs by placing a controlled current source in series with each LED string, typically on the low (cathode) side. Within the broader power-management hierarchy, linear LED drivers sit beneath voltage regulators and are specialized for current-controlled lighting loads, where the IC absorbs the voltage difference between the supply rail and the LED forward voltage as heat. Compared with switching LED drivers, linear drivers avoid inductors and switching noise, simplifying EMI compliance and PCB layout at the cost of lower efficiency when VIN is significantly higher than the LED forward voltage. They are commonly used in automotive tail, signal, and interior lighting where EMC constraints and PCB area are critical.
Key features of the TLD23623ETXUMA1 include three independently controllable outputs with linear current regulation up to 150 mA per channel, an integrated PWM dimming input for brightness control, programmable output current via an external sense resistor, and integrated thermal protection with automatic current derating. The driver also supports diagnostic feedback such as open-load, short-to-ground, and over-temperature detection, which is essential for functional-safety aware automotive lighting designs.
Technically, the TLD23623ETXUMA1 uses a low-side linear topology with three parallel driver channels, each containing an internal power transistor, a current-sense amplifier referenced to an external low-side resistor, and a logic block for PWM modulation and fault management. This architecture allows individual channel control and parallel connection for higher currents when the application demands it.
Typical applications include automotive rear combination lamps, turn indicators, daytime running lights, sequential tail-light animations, and matrix-style signal lighting. The AEC-Q100 qualification, combined with its wide operating temperature range, makes it well suited for under-hood and exterior body lighting that must survive harsh thermal and electrical environments.
When designing with this part, ensure adequate PCB copper area on the exposed pad to dissipate the heat generated by the linear regulator. A 4-layer board with a 1 square-inch thermal land is recommended for full-load operation in sealed lamp housings.
This page consolidates distributor pricing, drop-in alternatives, and design notes that go beyond the manufacturer datasheet alone.
Drop-in alternatives for TLD23623ETXUMA1 — 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 TLD23623ETXUMA1 (same form factor and footprint) — differing in Package, Topology, Automotive Qualification, Number of Channels, RoHS Status.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TLD23313EPXUMA1
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View Datasheet →TLD1211SJFUMA1
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View Datasheet →TLD1125ELXUMA1
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$0.85 / Unit
View Datasheet →TLD5191ESXUMA1
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$3.25 / Unit
View Datasheet →BTS51202EKAXUMA1
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View Datasheet →TLD23623ETXUMA1 Maximum Ratings & Electrical Characteristics
| Topology | 3-channel low-side linear LED driver |
| Number of Outputs | 3 |
| Output Current per Channel | 150 mA (max) |
| LED Segments Supported | 9 (per channel configuration) |
| Dimming Method | PWM |
| Package | PG-TFDSO-16-1 (16-pin TFDSO EP) |
| Mounting Type | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Thermal Protection | Yes (integrated with auto derating) |
| Diagnostic Features | Open-load, short-to-GND, over-temperature detection |
| MSL Level | MSL3 (per JEDEC J-STD-020) |
| RoHS Status | Compliant |
| Tape & Reel Quantity | 2500 pcs/reel (standard) |
| Lead-Free | Yes |
| Series / Family | LITIX Basic / TLD |
TLD23623ETXUMA1 Pin Configuration
| Pin 1 | OUT1 — Channel 1 low-side current sink output |
| Pin 2 | OUT2 — Channel 2 low-side current sink output |
| Pin 3 | OUT3 — Channel 3 low-side current sink output |
| Pin 4 | VS — Supply voltage |
| Pin 5 | GND — Ground |
| Pin 6 | PWM — PWM dimming input |
| Pin 7 | EN — Enable input |
| Pin 8 | ISET — Current set reference |
| Pin 9 | DIAG — Diagnostic feedback output |
| Pin 10 | NC — Not connected (per datasheet) |
| 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
TLD23623ETXUMA1 is suitable for 6 applications: Automotive Rear Combination Lamps, Sequential Turn Indicators, Daytime Running Light Modules, Interior Ambient Lighting, Industrial Status Indicators and Signal Towers, Brake and Stop Lamp Drivers.
Automotive Rear Combination Lamps
The TLD23623ETXUMA1's three independent 150 mA low-side current regulators match the architecture of modern rear combination lamps where tail, stop, and turn functions must be driven from a single IC. Each channel supports up to 9 LED segments, allowing matrix-style tail-light designs with sequential animation without an external microcontroller for current regulation. The AEC-Q100 qualification and integrated thermal derating allow direct placement inside the lamp housing where ambient temperatures reach 85-105 C, and the linear topology avoids the inductor EMI that complicates switching designs in sealed lamp modules.
Recommended
Sequential Turn Indicators
The TLD23623ETXUMA1 drives sequential turn-signal animations with its per-channel PWM dimming and independent current regulation across three outputs. Each LED string can be modulated in time-multiplexed fashion to produce sweep effects, and the integrated diagnostics detect open-load and short-to-ground conditions critical for ASIL-B functional-safety targets. Because the driver is low-side, the PCB layout keeps the chassis return path short, simplifying ground routing in body-control modules that share ground with multiple lamp clusters.
Recommended
Daytime Running Light Modules
The TLD23623ETXUMA1 provides 150 mA per channel with PWM dimming, suiting daytime running light (DRL) modules that require both a low-intensity running mode and a high-intensity DRL boost mode. The exposed pad of the PG-TFDSO-16-1 package spreads heat efficiently when (VIN minus VLED) is small, allowing reliable operation at moderate forward-voltage drops. Designers can parallel two or three output channels for higher-current DRL strings without external power transistors.
Recommended
Interior Ambient Lighting
The TLD23623ETXUMA1's per-channel PWM dimming and 150 mA capability suit RGB or tunable-white interior ambient lighting strips driven from a single automotive-grade IC. Designers can assign one channel each to red, green, and blue LED strings, achieving 16-bit color mixing via PWM duty-cycle control from a body-control MCU. The integrated fault feedback simplifies ASIL compliance by reporting open LED failures to the central lighting controller.
Recommended
Industrial Status Indicators and Signal Towers
Beyond automotive, the TLD23623ETXUMA1 can drive three-channel industrial status indicators with PWM brightness control and fault diagnostics that simplify predictive maintenance in factory automation stacks. The exposed-pad PG-TFDSO-16-1 footprint dissipates heat efficiently in sealed industrial enclosures, and the three channels reduce BOM count compared to discrete MOSFET + sense-resistor designs. The same AEC-Q100 robustness translates to long operating life in harsh industrial environments.
Recommended
Brake and Stop Lamp Drivers
The TLD23623ETXUMA1 drives high-intensity brake and stop lamps from its three linear channels, each rated to 150 mA continuous output. Designers can parallel two channels for 300 mA stop-lamp strings and reserve the third channel for the center high-mounted stop lamp. The linear topology eliminates the audible noise sometimes generated by switching LED drivers, a feature valued in cabin-mounted lamp modules.
Recommended
Recommended Products Summary
Engineering reference data for TLD23623ETXUMA1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TLD23313EPXUMA1 | TLD1211SJFUMA1 | TLD1125ELXUMA1 | TLD5191ESXUMA1 | BTS51202EKAXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TFDSO-16-1 (16-pin TFDSO EP) | PG-TFDSO-16 (different footprint variant) | PG-DSO-8 | PG-SSOP-14 | PG-TSSOP-28 | PG-DSO-20 |
| Number of Channels | 3 | 3 | 1 | 1 | 1 (DC-DC controller) | 2 (high-side) |
| Topology | Linear low-side | Linear low-side | Linear low-side | Linear low-side | DC-DC buck (switching) | High-side switch |
| Automotive Qualification | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Dimming | PWM | PWM | PWM | PWM | PWM / analog | PWM |
| Diagnostic Feedback | Open-load, short-to-GND, OT | Open-load, short-to-GND, OT | Open-load, OT | Open-load, OT | Fault flag | Open-load, OT, short-to-GND/VS |
Key Differentiators
- Three independent 150 mA channels in a single IC (vs TLD1211SJFUMA1)
- Linear topology for EMI-sensitive lamp modules (vs TLD5191ESXUMA1)
- Integrated diagnostics reduce external supervision (vs BTS51202EKAXUMA1)
Design Notes
Estimated: at 100 mA per channel and (VIN minus VLED) = 5 V, each channel dissipates approximately 0.5 W and the total IC dissipation is roughly 1.5 W. The PG-TFDSO-16-1 exposed pad requires a 4-layer PCB with at least 1 square-inch of uninterrupted copper ground pour to keep the junction temperature rise within the AEC-Q100 envelope. In sealed lamp housings where ambient temperature reaches 85 C, derate by 30 percent or use two channels in parallel for thermal headroom.
Route the OUT1, OUT2, OUT3 traces directly to the LED string cathodes using wide, short copper pours to minimize parasitic inductance on the low-side return path. Place the ISET resistor close to the ISET pin with a Kelvin connection to GND to maintain current accuracy across all three channels. Keep digital inputs (PWM, EN, DIAG) away from the OUT switching nodes to avoid noise coupling onto logic signals.
Do not exceed the absolute maximum VS rating during load-dump transients; add a TVS clamp on the VS pin for 12 V automotive systems. Do not leave unused channels floating - tie them to GND or disable them via the enable logic to avoid false open-load diagnostics. Verify that the PWM frequency is within the datasheet range (typically above the audible band, often > 200 Hz) to avoid coil whine and LED flicker.
Compliance Information
AEC-Q100 qualified per Arrow.com listing. RoHS and lead-free compliance inferred from Infineon LITIX family standards; halogen-free status not explicitly listed in verified data.
