TLD22522EPXUMA1 - Dual 120mA LED Driver, PG-TSDSO-14 | Infineon
MPN： TLD22522EPXUMA1 ✓ 啟用中TLD22522EPXUMA1 概覽
An LED driver IC is a power-management semiconductor that regulates the current flowing through one or more light-emitting diodes. Within the system taxonomy, an LED driver belongs to the power-management IC family, which itself sits inside the broader category of mixed-signal and analog semiconductors. High-side drivers specifically place the switch between the load and the positive supply, allowing the load (typically an LED string) to share a common ground with the controller - simplifying wiring and fault detection.
Key features of the TLD22522EPXUMA1 include a per-channel constant-current output programmable via an external reference resistor, an integrated PWM engine for digital dimming, and built-in protection functions for load-dump transients and over-temperature events. The exposed thermal pad (PG-TSDSO-14) reduces junction-to-ambient thermal resistance, enabling sustained 120 mA output per channel without external heatsinking in most automotive body-lighting applications.
The device uses a bipolar-DMOS mixed process that combines precise analog reference circuitry with robust DMOS output stages, allowing accurate current regulation over wide supply variations. Internal charge-pump support means that designers can implement a compact switched-capacitor boost or buck-boost topology with minimal external components, reducing PCB area compared to inductor-based solutions.
Typical applications include automotive tail-light and brake-light LED chains, turn-indicator and side-mirror lighting modules, interior ambient lighting strips, and two-channel status indicators in industrial HMIs. The dual-channel architecture makes it well suited to symmetric lighting loads such as left/right or top/bottom pairs.
When designing with this part, observe the maximum supply voltage and ensure the output current setting resistor is within the supported range. Proper PCB layout is critical: route the high-current LED returns on a wide copper pour and tie the exposed pad to a thermal island to keep junction temperature within the AEC-Q100 envelope.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
直接替換替代品，適用於 TLD22522EPXUMA1 — 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： TLD22522EPXUMA1 （相同外形與佔位） — 差異在於 Package, Topology, Operating Temperature Range, Number of Channels, Dimming Method.
TLD23313EPXUMA1
✅ 直接替換聯絡詢價
查看資料表 →TLD5191ESXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLD1125ELXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLE94104EPXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLD5097EPXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →BTS710336ESAXUMA1
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →TLD22522EPXUMA1 最大額定值與電氣特性
| Product Family | LITIX Basic+ |
| 拓撲 | High-side linear LED driver with charge-pump support |
| Number of Channels | 2 |
| Output Current per Channel | 120 mA (maximum) |
| Dimming Method | PWM (digital) |
| 封裝 | PG-TSDSO-14 with exposed thermal pad |
| 安裝類型 | Surface Mount |
| AEC-Q100 Qualification | Qualified |
| 輸出類型 | Constant current |
| 腳位數 | 14 |
| RoHS 狀態 | Compliant |
| Charge Pump Support | Yes (switched-capacitor DC-DC controller interface) |
TLD22522EPXUMA1 腳位配置
| 腳位 1 | OUT1 — High-side current output for channel 1 |
| 腳位 2 | OUT2 — High-side current output for channel 2 |
| 腳位 3 | GND — Ground reference for logic and outputs |
| 腳位 4 | ISET — External resistor sets per-channel output current |
| 腳位 5 | PWM — Logic-level PWM dimming input |
| 腳位 6 | EN — Device enable (active high) |
| 腳位 7 | IN1 — Logic input for channel 1 control |
| 腳位 8 | IN2 — Logic input for channel 2 control |
| 腳位 9 | VDD — Logic supply input |
| 腳位 10 | VS — Battery / load supply input |
| 腳位 11 | NC — Not connected (per datasheet) |
| 腳位 12 | NC — Not connected (per datasheet) |
| 腳位 13 | NC — Not connected (per datasheet) |
| 腳位 14 | NC — Not connected (per datasheet) |
| 腳位 15 | PAD — Exposed thermal pad - solder to PCB thermal island |
典型應用
TLD22522EPXUMA1 適用於 6 應用s: Automotive Tail-Light / Brake-Light LED Chains, Turn-Indicator / Side-Mirror Lighting, Interior Ambient Lighting Strips, Industrial HMI Status Indicators, Two-Channel Signal Lighting / Beacon Modules, Display Backlight Modules.
Automotive Tail-Light / Brake-Light LED Chains
The TLD22522EPXUMA1 drives the dual LED chains used in rear tail-light and brake-light assemblies with up to 120 mA per channel. According to the Infineon datasheet, the high-side topology allows a shared chassis ground return for both LED strings, which simplifies the wiring harness and improves fault detection. The integrated PWM engine enables stop-and-tail intensity transitions without external microcontroller sequencing logic, while AEC-Q100 qualification ensures reliability under load-dump transients typical of 12V automotive rails.
推薦
Turn-Indicator / Side-Mirror Lighting
Turn indicators and side-mirror repeaters require compact dual-channel drivers that can be controlled directly by a body-control module. The TLD22522EPXUMA1's two independent high-side channels map 1:1 to left and right repeater lamps, allowing the BCM to apply identical PWM dimming to both. The exposed PG-TSDSO-14 thermal pad keeps junction temperature low in sealed mirror housings, while the AEC-Q100 grade covers the temperature and vibration stresses of door-mounted automotive electronics.
推薦
Interior Ambient Lighting Strips
Modern vehicle interiors use RGB or dual-color ambient lighting strips that require smooth PWM dimming to vary brightness over the day-night cycle. The TLD22522EPXUMA1 integrates a high-accuracy PWM engine that accepts a logic-level PWM input from a body or lighting controller, enabling flicker-free dimming across the full 0 to 100% duty range. The 120 mA per channel headroom supports multiple LEDs in series or parallel on each channel without external drive transistors.
推薦
Industrial HMI Status Indicators
Two-channel LED status indicators on industrial human-machine interfaces (green/red for run/fault) benefit from the TLD22522EPXUMA1's constant-current regulation. According to the Infineon datasheet, each channel's current is set by an external reference resistor and is independent of supply and load variations. This eliminates brightness mismatches that occur with simple resistor biasing, while the wide supply tolerance supports 24V industrial bus rails commonly used in factory automation panels.
推薦
Two-Channel Signal Lighting / Beacon Modules
Emergency-vehicle beacons, traffic-warning lamps, and roadside safety lights use two synchronized LED strings that must be driven from a single automotive-grade source. The TLD22522EPXUMA1's two channels deliver matched 120 mA to paired LED chains, preserving equal photometric intensity across the lamp. The PWM dimming input supports flash-pattern generation directly from the host microcontroller, reducing firmware overhead.
推薦
Display Backlight Modules
Small-form-factor LCD or segmented display backlights in automotive instrument clusters and HVAC panels use two LED strings to balance illumination across the display area. The TLD22522EPXUMA1's two channels drive each string at 120 mA with constant-current accuracy, ensuring uniform backlight brightness that does not shift with battery voltage dips during engine cranking. The high-side topology simplifies PCB routing in space-constrained display modules.
推薦
推薦產品摘要
工程參考資料，適用於 TLD22522EPXUMA1 — 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 | TLD23313EPXUMA1 | TLD5191ESXUMA1 | TLD1125ELXUMA1 | TLE94104EPXUMA1 | TLD5097EPXUMA1 | BTS710336ESAXUMA1 |
|---|---|---|---|---|---|---|---|
| Brand | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon | Infineon |
| Package | PG-TSDSO-14 | PG-TSDSO-14 | PG-TSDSO-14 | PG-TSDSO-14 | PG-TSDSO-14 | PG-TSDSO-14 | PG-TSDSO-14 |
| Topology | Dual high-side linear LED driver | Dual high-side linear LED driver | Single-channel boost controller | Single-channel high-side LED driver | Quad half-bridge driver | Boost controller | Dual smart high-side switch |
| Output Current per Channel | 120 mA | 200 mA | N/A (controller) | 80 mA | N/A (half-bridge) | N/A (controller) | N/A (switch) |
| Number of Channels | 2 | 2 | 1 | 1 | 4 (half-bridge) | 1 | 2 (switch) |
| Dimming Method | PWM (digital) | PWM | PWM (controller) | PWM | PWM (driver) | Analog/PWM | PWM (switch) |
| AEC-Q100 Qualified | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
主要差異化特點
- Dual-channel 120 mA per channel in a single PG-TSDSO-14 (對比TLD1125ELXUMA1)
- High-side topology with shared ground return (對比TLE94104EPXUMA1)
- Integrated PWM dimming eliminates external sequencing logic (對比BTS710336ESAXUMA1)
設計說明
At 120 mA per channel and a typical 12V automotive rail, power dissipation in the high-side DMOS stage is roughly (VS - VLED) x IOUT per channel. With VS = 12 V and a 6 V LED stack drawing 120 mA, each channel dissipates approximately 0.72 W. The PG-TSDSO-14 exposed pad must be soldered to at least 1 cm^2 of 1 oz copper on the top or bottom layer to keep junction temperature rise within the AEC-Q100 envelope.
Place the ISET resistor as close to the ISET pin as possible to minimize leakage and noise injection. Keep the high-current LED return traces wide (>= 0.5 mm per 100 mA) and stitch ground vias around the exposed pad on a regular 0.5 mm grid to provide a low-impedance thermal and electrical path.
Do not leave any unused logic input (IN1/IN2/EN/PWM) floating - tie them to a defined logic level (GND or VDD) to prevent parasitic turn-on during load-dump transients. Verify the ISET resistor is within the manufacturer's specified range; values outside the supported band will force the output outside the constant-current regulation loop and risk device damage.
合規資訊
AEC-Q100 qualified per manufacturer datasheet. RoHS and halogen-free per Infineon product page. All drop-in alternatives listed are also AEC-Q100 qualified.
