TLD1124ELXUMA1 - 360mA 1-Ch Linear LED Driver | Infineon LITIX
MPN: TLD1124ELXUMA1 ✓ فعالTLD1124ELXUMA1 جائزہ
A linear LED driver (also called an LED controller or linear current regulator) is a power-management IC that maintains a constant, programmed current through an LED or LED string rather than a constant voltage. Within the broader power hierarchy, linear LED drivers sit beneath switching DC-DC LED drivers and above simple ballast resistors; they trade conversion efficiency for ultra-low EMI, fast PWM dimming response, and minimal external component count — making them the preferred topology for noise-sensitive or cost-sensitive automotive lamp modules.
Key features of the TLD1124ELXUMA1 include an adjustable constant output current up to 360 mA set by a single external sense resistor, a wide supply range suited to automotive 12 V and 24 V bus systems, integrated PWM dimming via an enable/dimming input, and comprehensive protection including open-LED, short-to-GND, short-to-battery, over-temperature, and over-current diagnostics. The exposed thermal pad of the PG-SSOP-14-EP package provides a low θJA path to the PCB copper, which is essential when dissipating several watts in a linear topology.
The device is qualified to AEC-Q100 for automotive use and is targeted at rear lamps, daytime running lights, interior mood lighting, and instrument-panel backlighting. Typical design tips: choose a sense resistor of roughly 0.5 Ω to 1.5 Ω to program the 360 mA nominal current, keep the input bypass capacitor within 5 mm of the VS pin, and connect the exposed pad to a copper area of at least 1 cm². This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
کے لیے ڈراپ اِن متبادل TLD1124ELXUMA1 — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں TLD1124ELXUMA1 (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Automotive Qualification, Package, Topology, Operating Temperature Range, Maximum Output Current.
TLD1125ELXUMA1
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →TLD1211SJFUMA1
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →TLD1124ELXUMA1 زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| ٹوپولوجی | Linear high-side constant-current LED driver |
| Number of Output Channels | 1 |
| Maximum Output Current per Channel | 360 mA |
| Supply Voltage Range (VS) | 5.5 V to 40 V |
| Dimming Method | PWM via EN/DIM input |
| Output Current Setting | External sense resistor (RSET) |
| آپریٹنگ درجہ حرارت رینج | -40 °C to +150 °C (Tj) |
| پیکیج | PG-SSOP-14-EP (14-pin SSOP with exposed pad) |
| ماؤنٹنگ ٹائپ | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Protection Features | Open-LED, short-to-GND, short-to-battery, over-temperature, over-current |
| Diagnostic Output | Yes (fault flag) |
| RoHS اسٹیٹس | Compliant |
| Series | LITIX™ Basic |
TLD1124ELXUMA1 پن کنفیگریشن
| پن 1 | VS — Supply voltage (5.5 V to 40 V) |
| پن 2 | OUT — Current-regulated output to LED anode |
| پن 3 | NC — Not connected (per datasheet) |
| پن 4 | NC — Not connected (per datasheet) |
| پن 5 | IS — Current sense resistor to GND |
| پن 6 | GND — Ground |
| پن 7 | EN/DIM — Enable and PWM dimming input |
| پن 8 | FAULT — Diagnostic fault output (open-drain) |
| پن 9 | NC — Not connected (per datasheet) |
| پن 10 | NC — Not connected (per datasheet) |
| پن 11 | NC — Not connected (per datasheet) |
| پن 12 | NC — Not connected (per datasheet) |
| پن 13 | NC — Not connected (per datasheet) |
| پن 14 | NC — Not connected (per datasheet) |
| پن 15 | EP — Exposed thermal pad — solder to copper for heatsinking |
عام استعمالات
TLD1124ELXUMA1 کے لیے موزوں ہے 6 ایپلیکیشنs: Automotive Rear Combination Lamp (Tail / Brake / Turn), Daytime Running Light (DRL) LED String, Automotive Interior Ambient Lighting, Instrument-Cluster Backlighting, Indicator / Side-Marker LED Modules, Commercial-Vehicle 24 V LED Lighting.
Automotive Rear Combination Lamp (Tail / Brake / Turn)
The TLD1124ELXUMA1's 360 mA single-channel output and 5.5 V to 40 V VS rating make it a drop-in constant-current source for automotive rear lamps fed directly from the 12 V battery bus. The high-side linear topology adds zero switching EMI — important because adjacent CAN/LIN transceivers and FM tuners in the rear harness are EMI-sensitive. AEC-Q100 qualification and integrated open-LED/short-to-battery diagnostics allow the Body Control Module to flag a failed lamp to the driver. With a 1 Ω sense resistor the part delivers ~300 mA, matching typical 1 W and 3 W LED strings used in modern tail/brake/turn modules.
تجویز کردہ
Daytime Running Light (DRL) LED String
The TLD1124ELXUMA1 is well matched to DRL LED strings because its PWM dimming input allows the BCM to vary brightness between daytime running and parking-light modes without changing the sense resistor. The 40 V VS ceiling provides margin against 12 V load-dump transients up to ISO 7637-2 pulse profiles. Its linear regulation produces a clean DC current, which extends LED lifetime by eliminating the current ripple and thermal cycling that switching drivers can introduce at low duty cycles — a measurable reliability advantage in under-hood ambient temperatures up to 85 °C.
تجویز کردہ
Automotive Interior Ambient Lighting
Interior ambient and mood lighting typically uses 20 mA to 60 mA LED strings, well below the TLD1124ELXUMA1's 360 mA ceiling, so a single channel can drive several parallel strings. The PG-SSOP-14-EP exposed pad enables placement in compact overhead-console and door-trim PCBs where the available copper area is limited. Because the part has zero switching noise, it does not couple EMI into the cabin audio amplifier or the wireless-charger coil. The PWM dimming input is compatible with LIN-bridged BCM dim commands for smooth 1% to 100% brightness control.
تجویز کردہ
Instrument-Cluster Backlighting
Instrument-cluster backlights demand uniform brightness and zero audible noise — exactly what the TLD1124ELXUMA1's linear regulator delivers. A single channel can drive the cluster's main backlight string at 60 mA to 100 mA with no inductor whine, eliminating a long-standing complaint with switching LED drivers. The fault-diagnostic output can be routed back to the cluster microcontroller to illuminate a 'check lamp' warning when an LED fails open, satisfying OEM warranty and functional-safety requirements. The wide 5.5 V to 40 V input also supports 24 V commercial-vehicle clusters.
تجویز کردہ
Indicator / Side-Marker LED Modules
Side-marker and turn-indicator LEDs typically run at 30 mA to 150 mA per string, comfortably handled by the TLD1124ELXUMA1 at 360 mA. Mounting the IC directly on the lamp PCB reduces wiring harness complexity and improves EMC because there is no inductive switching node to radiate. The exposed pad of the PG-SSOP-14-EP package can be soldered to a small copper land, sufficient for the 1 W to 2 W dissipation typical of indicator strings. AEC-Q100 qualification ensures the lamp module can be qualified once and reused across global vehicle platforms.
تجویز کردہ
Commercial-Vehicle 24 V LED Lighting
The TLD1124ELXUMA1's 40 V VS ceiling is well above the 24 V truck and bus bus voltage plus transient overshoots, making it suitable for commercial-vehicle exterior lighting. Its linear topology means the part dissipates the excess (VS − VLED) as heat, which must be budgeted against the PCB copper area; at 24 V supply and a single 3 V white LED at 350 mA this is around 7 W. Designers therefore select the supply voltage and series-LED count to keep dissipation below 3 W per channel. AEC-Q100 qualification supports trucks, buses, and agricultural machinery.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا TLD1124ELXUMA1 — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | TLD1125ELXUMA1 | TLD1211SJFUMA1 |
|---|---|---|---|
| Package | PG-SSOP-14-EP | PG-SSOP-14-EP — same | PG-DSO-8 — verify before drop-in |
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Number of Channels | 1 | 2 | 1 |
| Maximum Output Current | 360 mA | 180 mA per channel (360 mA total) | Lower current — verify per datasheet |
| Topology | Linear high-side | Linear high-side | Linear high-side |
| Dimming | PWM via EN/DIM | PWM via EN/DIM | PWM |
| AEC-Q100 | Yes | Yes | Yes |
اہم امتیازی خصوصیات
- Single-channel 360 mA in PG-SSOP-14-EP (بمقابلہTLD1125ELXUMA1)
- Wide 5.5 V to 40 V supply range (بمقابلہTLD1211SJFUMA1)
- Integrated diagnostics (FAULT output) (بمقابلہDiscrete transistor LED driver)
ڈیزائن نوٹس
Estimated: at VS = 12 V, VLED = 3.2 V, ILED = 300 mA, the TLD1124ELXUMA1 dissipates approximately (12 V − 3.2 V) × 0.3 A = 2.6 W. The PG-SSOP-14-EP exposed pad must be soldered to a copper area of at least 1 cm² on the top layer (and ideally 2 cm² with thermal vias) to keep θJA below 50 K/W; without adequate copper the junction will exceed the 150 °C Tj maximum within seconds. Derate ILED above 70 °C ambient.
Place the 100 nF VS bypass capacitor within 5 mm of the VS pin and the sense resistor within 3 mm of the IS pin to minimize parasitic inductance that can inject voltage transients into the current regulation loop. Route the OUT trace away from the EN/DIM and FAULT traces to prevent coupling. Keep the LED string return close to GND to avoid ground bounce that disturbs the sense-resistor measurement.
Do not connect the exposed pad to a floating or signal-only copper island — it must be soldered to a continuous ground copper pour, otherwise θJA rises sharply and the IC will overheat at full 360 mA. The sense resistor must be a low-inductance type (thick-film or wire-wound SMD, NOT a long-path thin-film) to prevent PWM dimming transients from disturbing the regulation loop. The FAULT pin is open-drain and requires an external pull-up to the logic rail.
تعمیل کی معلومات
AEC-Q100 qualified per Infineon LITIX™ Basic datasheet; RoHS compliant; lead-free reflow-compatible per PG-SSOP-14-EP package. Halogen-free status not stated in the verified data.
