TLD23723ETXUMA1 - 3-Ch 150mA LED Driver w/ Power Shift | Infineon
MPN: TLD23723ETXUMA1 ✓ Hoạt độngTLD23723ETXUMA1 Tóm tắt
A low-side LED driver is an integrated circuit that controls current through an LED string by switching or regulating the path to ground on the cathode side, rather than to the positive supply. Low-side drivers sit within the broader power management IC hierarchy: LED driver -> constant-current driver -> power management IC -> semiconductor. Compared to high-side drivers, low-side topologies are simpler, less expensive, and tolerant of high output voltages, but require the LED string to be tied to a fixed positive rail.
Key specifications of the TLD23723ETXUMA1 include three independent 150 mA output channels, integrated Power Shift current redistribution, wide supply voltage support typical for LITIX Basic+ parts, PWM dimming capability, and per-channel diagnostic feedback. The exposed thermal pad (PG-TFDSO EP) reduces junction-to-ambient thermal resistance, supporting continuous operation in thermally constrained lamp housings. The IC is designed for 12 V automotive buses and tolerates load-dump transients defined in ISO 7637.
Architecturally, the device pairs three linear current sinks with shared diagnostic logic and a serial interface for PWM duty and fault reporting. Power Shift monitors voltage across each sink and recovers unused compliance headroom by steering surplus current to other channels - a key advantage over fixed 150 mA-per-channel competitors when one LED string draws less than its maximum.
Typical applications include automotive tail-light clusters, daytime running lights (DRL), turn-indicator modules, and interior RGB ambient lighting. The AEC-Q100 qualification and 16-pin thermally enhanced package make it equally suited to motorcycle and commercial-vehicle lighting. When designing with this part, ensure PCB copper pour beneath the exposed pad is maximized to meet thermal targets; for PWM dimming below 1 kHz, place a small capacitor across each LED string to suppress line-side ringing.
Bộ thay thế dễ dàng lắp đặt cho TLD23723ETXUMA1 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với TLD23723ETXUMA1 (cùng hình factor và footprint) — khác nhau ở Package, Topology, Operating Temperature Range, Automotive Qualification, Dimming Method.
TLD23313EPXUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLD1125ELXUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLE42062GXUMA2
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLD1211SJFUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLD5097EPXUMA1
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →TLD23723ETXUMA1 Tỷ lệ tối đa & tính chất điện
| Product Family | LITIX Basic+ |
| Cấu trúc | Low-side constant-current LED driver |
| Number of Channels | 3 |
| Output Current per Channel | 150 mA |
| Dimming Method | Linear PWM |
| Power Shift Feature | Yes (redistributes current between channels) |
| Hộp | PG-TFDSO-16-1 (TFDSO EP, 16-pin) |
| Khoảng nhiệt độ hoạt động | -40 C to +150 C (TJ) |
| Automotive Qualification | AEC-Q100 |
| Diagnostics | Per-channel fault feedback |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Lead-Free | Yes |
Cấu hình chân TLD23723ETXUMA1
| Chân 1 | OUT1 — Channel 1 current sink output |
| Chân 2 | OUT1 — Channel 1 current sink output |
| Chân 3 | OUT2 — Channel 2 current sink output |
| Chân 4 | OUT2 — Channel 2 current sink output |
| Chân 5 | GND — Ground reference |
| Chân 6 | DIAG — Diagnostic output (open-drain) |
| Chân 7 | PWMIN — PWM dimming input |
| Chân 8 | VS — Supply voltage |
| Chân 9 | SET — Current set reference |
| Chân 10 | OUT3 — Channel 3 current sink output |
| Chân 11 | OUT3 — Channel 3 current sink output |
| Chân 12 | NC — Not connected (per datasheet) |
| Chân 13 | NC — Not connected (per datasheet) |
| Chân 14 | NC — Not connected (per datasheet) |
| Chân 15 | NC — Not connected (per datasheet) |
| Chân 16 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
TLD23723ETXUMA1 phù hợp cho 6 Áp dụngs: Automotive Tail-Light Cluster, Daytime Running Light (DRL) Module, Turn-Indicator / Blinker Module, Interior Ambient Lighting, Motorcycle Brake and Tail Lighting, Commercial-Vehicle Marker Lights.
Automotive Tail-Light Cluster
The TLD23723ETXUMA1 drives three LED strings (brake, tail, turn) in a 12 V automotive tail-light, with each channel delivering up to 150 mA. Its Power Shift feature rebalances current when one string (e.g., a 2-LED turn) draws less than its allocation, lifting effective brightness on the active string by up to 20-30% versus fixed-per-channel drivers. AEC-Q100 qualification and the exposed-pad 16-pin PG-TFDSO EP package support under-hood and exterior lamp housings, while per-channel diagnostics flag open-LED or short-to-GND faults to the body control module over the diagnostic pin.
Được đề xuất
Daytime Running Light (DRL) Module
The TLD23723ETXUMA1 is well suited to DRL modules where two or three LED strings must operate at uniform brightness from a 12 V bus. Its 150 mA per channel covers typical 1-2 W DRL strings, while PWM dimming supports DRL-off / DRL-on and adaptive brightness modes. The exposed thermal pad (PG-TFDSO EP) reduces theta-JA so the IC can dissipate the linear-drop heat without a heatsink, allowing a compact PCB that fits inside a sealed lamp assembly.
Được đề xuất
Turn-Indicator / Blinker Module
Turn indicators need precise current regulation for legal brightness compliance and graceful degradation when one LED fails. The TLD23723ETXUMA1's per-channel diagnostic feedback reports open-LED conditions to the BCM, which can then adjust flash cadence or warn the driver. Each 150 mA channel drives standard 2-LED turn strings at 12 V, and the AEC-Q100 qualification covers the automotive thermal and vibration profile required for exterior signaling modules.
Được đề xuất
Interior Ambient Lighting
The TLD23723ETXUMA1 powers RGB or warm-white interior ambient lighting strips, with three channels at 150 mA each driving independent color or zone strings. PWM dimming enables smooth brightness transitions via the body or infotainment controller, while the low-side constant-current topology prevents color shift caused by supply-voltage variation. The 16-pin PG-TFDSO EP package keeps the PCB footprint small enough for door-panel and headliner integration where space is constrained.
Được đề xuất
Motorcycle Brake and Tail Lighting
The TLD23723ETXUMA1's 3 channels at 150 mA suit motorcycle combined brake/tail/indicator lamps, where the 12 V bus is shared and lamp electronics must fit a small housing. AEC-Q100 qualification and -40 C to +150 C junction temperature handle under-seat and rear-fender mounting, where ambient temperatures can reach 85 C in summer. The exposed pad supports continuous operation at 150 mA per channel without external heatsinking, simplifying lamp assembly and improving long-term reliability.
Được đề xuất
Commercial-Vehicle Marker Lights
The TLD23723ETXUMA1 drives clearance, identification, and side-marker LEDs on trucks and trailers, where 24 V buses (with 12 V-tolerant LED strings) are common. Each 150 mA channel handles one or two high-brightness LEDs in series, and the Power Shift feature compensates for LED forward-voltage variation between strings from different bins. AEC-Q100 qualification supports the long-life and vibration requirements of commercial-vehicle exterior lighting.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho TLD23723ETXUMA1 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | TLD23313EPXUMA1 | TLD1125ELXUMA1 | TLE42062GXUMA2 | TLD1211SJFUMA1 | TLD5097EPXUMA1 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies |
| Package | PG-TFDSO-16-1 (TFDSO EP) | PG-TFDSO-16-1 (TFDSO EP) - same | PG-TFDSO-16-1 (TFDSO EP) - same | PG-TFDSO-16-1 (TFDSO EP) - same | PG-TFDSO-16-1 (TFDSO EP) - same | PG-TFDSO-16-1 (TFDSO EP) - same |
| Topology | Low-side linear | Low-side linear | Low-side linear | Low-side linear | Low-side linear | DC-DC buck/boost |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | Yes | Yes |
| PWM Dimming | Yes | Yes | Yes | Yes | Yes | Yes |
Bảo phân biệt quan trọng
- Power Shift current redistribution between channels (vsTLD23313EPXUMA1)
- 3 channels in a 16-pin thermally enhanced package (vsTLD1125ELXUMA1)
- Low-side linear topology with integrated diagnostics (vsTLD5097EPXUMA1)
Ghi chú thiết kế
The TLD23723ETXUMA1 dissipates linear-drop power in each current sink. Estimated: at 12 V supply with a 2-LED string at 2.5 V forward drop and 150 mA, each sink dissipates roughly (12 - 5) * 0.150 = 1.05 W. With three channels active, total package dissipation approaches 3 W, requiring a copper pour of at least 1 square inch under the exposed pad to keep junction temperature below 125 C at 85 C ambient.
Solder the exposed thermal pad (PG-TFDSO EP) directly to a copper pour with multiple thermal vias to the inner or bottom layer. Use a star-ground topology for the SET reference resistor to prevent ground-shift errors that would otherwise modulate the 150 mA set point. Place the SET resistor as close to the SET pin as possible, with the ground return running back to the device GND pin rather than the power ground plane.
Do not float unused OUT pins - unused outputs should be tied to VS or left open per the datasheet, but never left floating in noisy automotive environments where stray coupling can trigger diagnostics. For PWM dimming below 1 kHz, add a small capacitor (10-100 nF) across each LED string to suppress line-side ringing and maintain EMC compliance per automotive standards.
Thông tin tuân thủ
AEC-Q100 qualified per Arrow.com listing. RoHS and lead-free confirmed by Infineon product page. Halogen-free status not explicitly stated in retrieved web data.
