TLD21313EPXUMA1 - 3-Ch 60mA LED Driver, 40V LITIX Linear | Infineon
MPN： TLD21313EPXUMA1 ✓ 啟用中TLD21313EPXUMA1 概覽
An LED driver IC is a specialized power management device that regulates the current flowing through an LED string, rather than simply setting the voltage. By forcing a constant current, the driver eliminates the brightness variation that would otherwise occur with temperature drift, supply fluctuation, or LED forward-voltage binning spread. Within the broader semiconductor taxonomy, the TLD21313EPXUMA1 belongs to the LITIX Linear family, which sits inside the Power Management IC (PMIC) category of linear LED drivers - a sub-class of voltage regulators that are optimized for low-noise, low-EMI current regulation rather than high-efficiency conversion.
Key features include a 5% output current accuracy, integrated reverse-polarity protection, an enable/diagnostic pin, and built-in thermal shutdown with auto-recovery. The exposed thermal pad on the TSSOP-14-EP package keeps junction temperatures manageable even when all three channels are active at full 60 mA load, while the wide 5.5 V to 40 V input range tolerates load-dump transients common in 12 V and 24 V automotive systems.
Typical applications include automotive rear combination lamps, turn indicators, brake lights, and interior ambient lighting, where the TLD21313EPXUMA1's combination of three independently dimmable channels in a single compact package reduces BOM cost and PCB area. Each output is driven by a constant-current sink, so the same board design can be reused across vehicle programs simply by changing the external sense resistor.
When designing with this part, ensure the exposed pad is soldered to a sufficiently large copper pour to keep junction temperature below the thermal shutdown threshold. The PWM dimming input accepts logic-level signals, but a small RC filter on the PWMI pin reduces EMI. Designers should also leave adequate headroom above the LED string's total forward voltage to maintain constant-current regulation across the full dimming range.
This page synthesizes distributor pricing, automotive-grade drop-in alternatives, and practical PCB layout guidance not collected in any single datasheet.
直接替換替代品，適用於 TLD21313EPXUMA1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： TLD21313EPXUMA1 （相同外形與佔位） — 差異在於 Package, Topology, Dimming Method, Operating Temperature Range, Automotive Qualification.
TLD21421EPXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLD23313EPXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLD11203EPXUMA1
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
BCR401UWQ-7
✅ 直接替換📋 參考替代品（不在目錄中）
BCR402UWQ-7
✅ 直接替換📋 參考替代品（不在目錄中）
TLD21313EPXUMA1 最大額定值與電氣特性
| 拓撲 | Linear Current Source / Sink |
| 輸出數量 | 3 |
| Output Current per Channel | 60 mA (typical) |
| 輸入電壓範圍 | 5.5 V to 40 V |
| Output Current Accuracy | 5% |
| Dimming Method | Built-in PWM |
| 工作溫度範圍 | -40 C to +150 C |
| 封裝 | PG-TSDSO-14 (TSSOP-14-EP, 150 mil) |
| 安裝類型 | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Thermal Protection | Thermal Shutdown with Auto-Recovery |
| Diagnostic Features | Open-load / short-to-GND detection (per datasheet) |
| RoHS 狀態 | Compliant |
TLD21313EPXUMA1 腳位配置
| 腳位 1 | OUT1 — Constant-current output channel 1 |
| 腳位 2 | ISET1 — Channel 1 current set resistor |
| 腳位 3 | GND — Ground |
| 腳位 4 | OUT2 — Constant-current output channel 2 |
| 腳位 5 | ISET2 — Channel 2 current set resistor |
| 腳位 6 | PWMI — PWM dimming logic input |
| 腳位 7 | OUT3 — Constant-current output channel 3 |
| 腳位 8 | ISET3 — Channel 3 current set resistor |
| 腳位 9 | VS — Supply voltage |
| 腳位 10 | VS — Supply voltage |
| 腳位 11 | DIAG — Diagnostic / enable output |
| 腳位 12 | NC — Not connected (per datasheet) |
| 腳位 13 | NC — Not connected (per datasheet) |
| 腳位 14 | NC — Not connected (per datasheet) |
典型應用
TLD21313EPXUMA1 適用於 6 應用s: Automotive Rear Combination Lamps, Daytime Running Lights (DRL), Turn Indicators and Brake Lights, Interior Ambient Lighting, Industrial Status and Indicator LEDs, Architectural and Signage LED Modules.
Automotive Rear Combination Lamps
The TLD21313EPXUMA1's three independent 60 mA current sinks make it a natural fit for automotive rear combination lamps where tail, brake, and turn-indicator functions share one PCB. With AEC-Q100 qualification across -40 C to +150 C and a 5.5 V to 40 V input range that absorbs 12 V and 24 V automotive load-dump transients, the driver sits directly on the vehicle harness without extra protection circuitry. Each LED string is regulated by an external sense resistor, allowing the same BOM to be reused for different lamp brightness levels simply by changing resistor values. The PG-TSDSO-14 exposed-pad package keeps junction temperature manageable even when all three channels are active at full load.
推薦
Daytime Running Lights (DRL)
Daytime running lights demand a tightly regulated constant current to maintain photometric consistency across temperature and supply variation. The TLD21313EPXUMA1's 5% current accuracy and built-in PWM dimming input let designers program brightness profiles via a simple logic-level signal from the BCM, with no extra MCU PWM peripheral required. Because the LITIX topology is linear rather than switching, no EMI filters are needed on the input - a meaningful advantage when DRLs are mounted near AM/FM antennas or radar modules. The 40 V input ceiling also tolerates jump-start and load-dump events typical of automotive 12 V systems.
推薦
Turn Indicators and Brake Lights
Turn indicators and brake lights require precise current regulation to meet ECE R7 and SAE photometric specifications, and the TLD21313EPXUMA1 delivers 5% accuracy across three channels that can each drive an independent LED string. The device's diagnostic pin reports open-load and short-to-ground faults, enabling compliance with automotive functional-safety requirements without an extra diagnostic IC. With PWM dimming built in, the same hardware can implement variable-intensity brake-light functions (such as emergency-stop flashing) by modulating the PWMI pin from the BCM.
推薦
Interior Ambient Lighting
Interior ambient lighting modules typically use multiple RGB or single-color LED strings driven from a compact PCB, and the TLD21313EPXUMA1's three-channel integration simplifies the BOM. The PG-TSDSO-14 footprint is small enough to fit inside a door handle, footwell, or headliner module, while the -40 C to +150 C range comfortably covers cabin thermal extremes including direct sunlight through glass. Because LITIX linear drivers generate no audible noise or switching ripple, they do not introduce whine into the cabin audio system - a known complaint with switching LED drivers in premium vehicles.
推薦
Industrial Status and Indicator LEDs
Outside of automotive, the TLD21313EPXUMA1's three-channel constant-current regulation is well suited to industrial control panels, machine-status towers, and HMI backlights where multiple channels must present a uniform brightness. The 5.5 V to 40 V input tolerance means the same PCB can run from 12 V, 24 V, or 36 V industrial supplies without component changes. The TSSOP-14-EP package is compatible with standard SMT assembly lines, simplifying migration of existing panel designs that already use TSSOP-14 footprints.
推薦
Architectural and Signage LED Modules
Architectural LED signage and channel-letter illumination often require multiple constant-current LED strings driven from a 24 V supply. The TLD21313EPXUMA1's three channels can each drive one letter segment with independently programmable brightness via the PWMI pin, enabling chasing or fading effects without per-string driver ICs. The wide input range and linear topology avoid the EMI challenges of switching drivers in retail and hospitality environments where radio receivers and audio systems may be co-located with the signage.
推薦
推薦產品摘要
工程參考資料，適用於 TLD21313EPXUMA1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | TLD21421EPXUMA1 | TLD23313EPXUMA1 | TLD11203EPXUMA1 | BCR401UWQ-7 | BCR402UWQ-7 |
|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Diodes Incorporated | Diodes Incorporated |
| Package | PG-TSDSO-14 (TSSOP-14-EP) | PG-TSDSO-14 (TSSOP-14-EP) - same | PG-TSDSO-14 (TSSOP-14-EP) - same | PG-TSDSO-14 (TSSOP-14-EP) - same | TSSOP-14 - same | TSSOP-14 - same |
| Number of Channels | 3 | 2 | 3 | 1 | 1 | 1 |
| PWM Dimming | Built-in | Built-in | Built-in | Built-in | Built-in | Built-in |
| Automotive Grade (AEC-Q100) | Yes | Yes | Yes | Yes | No (industrial) | No (industrial) |
| RoHS | Compliant | Compliant | Compliant | Compliant | Compliant | Compliant |
| Topology | Linear | Linear | Linear | Linear | Linear | Linear |
主要差異化特點
- Three independent 60 mA channels in a single TSSOP-14-EP package (對比BCR401UWQ-7)
- AEC-Q100 automotive qualification with diagnostic pin (對比BCR402UWQ-7)
- Same LITIX family pinout as TLD21421EPXUMA1 (對比TLD21421EPXUMA1)
設計說明
Estimated: at VIN=12 V driving a single 2 V white LED per channel at 60 mA, each channel dissipates roughly (12 V - 2 V) x 60 mA = 0.6 W; with all three channels active total dissipation approaches 1.8 W. The PG-TSDSO-14 package thermal pad must be tied to a copper pour of at least 1 square inch to keep the junction below the 150 C shutdown threshold. Without this copper area, the device will enter thermal shutdown under full three-channel load.
Place the ISET resistors for each channel as close as possible to the corresponding ISET pin to minimize parasitic capacitance that could disturb the current-regulation loop. Route the OUT traces with adequate copper width - at least 0.5 mm per ampere - to handle 60 mA continuous current without significant voltage drop. Keep the OUT traces away from sensitive analog or RF traces to avoid coupling.
A common pitfall is forgetting to solder the exposed thermal pad: the PG-TSDSO-14 lead frame relies on the pad for primary heat removal, and missing solder joints will cause thermal shutdown even at moderate loads. Another common mistake is leaving the PWMI pin floating - the pin must be tied to VS or GND through a defined logic level, otherwise the dimming state is undefined at power-up and the LEDs can flicker. Finally, verify headroom: VLED_total + 1 V < VIN is required for the linear regulator to maintain constant-current regulation.
合規資訊
AEC-Q100 qualified per Infineon LITIX family documentation. RoHS compliant per DigiKey product page. REACH and conflict-minerals compliance per Infineon corporate policy.
