TLE8444SLXUMA1 - Quad Half-Bridge Motor Driver, 24V, AEC-Q100 | Infineon
MPN： TLE8444SLXUMA1 ✓ 啟用中TLE8444SLXUMA1 概覽
What is a half-bridge motor driver? A half-bridge driver is a power semiconductor topology containing two switches (high-side and low-side) that together drive one terminal of a load. A quad half-bridge IC integrates four such bridges on a single die, enabling flexible load configurations: two DC motors, one stepper motor (as two full H-bridges), four solenoids, four LEDs, or any combination. These ICs belong to the broader motor driver family, which sits under power management ICs in the system hierarchy (motor driver -> power management IC -> semiconductor). The half-bridge topology is the foundational building block of all H-bridge and 3-phase motor drivers.
Key differentiating features include an SPI/parallel control interface, integrated freewheeling diodes, overcurrent shutdown with diagnostics, overtemperature protection, undervoltage lockout, and open-load detection. The BiCDMOS architecture allows logic-level inputs (3.3 V/5 V CMOS compatible) to directly drive the high-current DMOS outputs, eliminating external gate drivers and level shifters. Each half-bridge can deliver continuous load current up to its rated RDS(on) limit, and parallel-mode operation enables higher per-channel current.
The TLE8444SL is targeted primarily at automotive body electronics and industrial motion control, where it controls small DC motors, stepper motors, relays, and solenoids. Its AEC-Q100 qualification makes it suitable for under-hood and body modules, while the parallel interface simplifies integration with microcontrollers that lack SPI peripherals. The SSOP-24 package with exposed pad provides low thermal resistance for sustained high-current operation.
Typical applications include throttle and flap actuators in HVAC systems, headlight beam-leveling motors, DC and stepper motor control in industrial automation, and solenoid/valve drivers. The integrated diagnostics (open load, short to ground/battery, overtemperature) significantly reduce external protection circuitry.
When designing with this device, ensure the supply voltage stays within the rated range and place a 100 nF decoupling capacitor close to the VBB pin. The exposed thermal pad must be soldered to a sufficient copper pour to handle the worst-case dissipation across all four channels.
This page consolidates distributor pricing, parametric drop-in alternatives, and practical PCB-level design guidance not found in the manufacturer datasheet, making it a complete sourcing and engineering reference for the TLE8444SLXUMA1.
直接替換替代品，適用於 TLE8444SLXUMA1 — 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： TLE8444SLXUMA1 （相同外形與佔位） — 差異在於 Diagnostic Features, Motor Type, Operating Temperature, Package, Topology.
TLE8444SL
✅ 直接替換📋 參考替代品（不在目錄中）
TLE8444SLXT
✅ 直接替換📋 參考替代品（不在目錄中）
TLE8444SLXUMA1 最大額定值與電氣特性
| Motor Type | Bipolar, Unipolar DC / Stepper |
| 拓撲 | Quad Half-Bridge |
| 輸出數量 | 4 half-bridges |
| Supply Voltage (VBB) | 4.5 V to 24 V |
| Overcurrent Shutdown | 0.9 A typical per channel |
| On-Resistance (RDS(on)) | 1.3 Ohm typical per switch |
| 介面 | Parallel (direct logic input) |
| Technology | SPT BiCDMOS (Bipolar + CMOS + DMOS) |
| 工作溫度 | -40 C to +150 C junction |
| 封裝 | PG-SSOP-24-7 (exposed pad) |
| 安裝類型 | Surface Mount |
| 腳位數 | 24 |
| AEC-Q100 Qualification | Qualified (automotive grade) |
| RoHS 狀態 | Compliant |
| Integrated Freewheeling Diodes | Yes |
| Diagnostic Features | Open load, short-to-GND, short-to-VBB, overtemperature |
| Undervoltage Lockout | Yes |
TLE8444SLXUMA1 腳位配置
| 腳位 1 | GND — Ground reference |
| 腳位 2 | OUT1 — Half-bridge 1 output (high-side drain / low-side drain) |
| 腳位 3 | VBB — Battery supply voltage (4.5 V - 24 V) |
| 腳位 4 | OUT2 — Half-bridge 2 output |
| 腳位 5 | GND — Ground |
| 腳位 6 | IN1 — Logic input 1 (high-side enable when high) |
| 腳位 7 | IN2 — Logic input 2 (low-side enable when high) |
| 腳位 8 | IN3 — Logic input 3 (high-side enable channel 3) |
| 腳位 9 | IN4 — Logic input 4 (low-side enable channel 4) |
| 腳位 10 | INH — Inhibit / master enable (active low) |
| 腳位 11 | GND — Ground |
| 腳位 12 | OUT3 — Half-bridge 3 output |
| 腳位 13 | VBB — Battery supply voltage |
| 腳位 14 | OUT4 — Half-bridge 4 output |
| 腳位 15 | GND — Ground |
| 腳位 16 | NC — Not connected (per datasheet) |
| 腳位 17 | NC — Not connected (per datasheet) |
| 腳位 18 | NC — Not connected (per datasheet) |
| 腳位 19 | NC — Not connected (per datasheet) |
| 腳位 20 | NC — Not connected (per datasheet) |
| 腳位 21 | NC — Not connected (per datasheet) |
| 腳位 22 | NC — Not connected (per datasheet) |
| 腳位 23 | NC — Not connected (per datasheet) |
| 腳位 24 | EP — Exposed thermal pad - must be soldered to PCB copper pour for heat dissipation |
典型應用
TLE8444SLXUMA1 適用於 6 應用s: Automotive HVAC Flap Actuators, Headlight Beam-Leveling Motor Drive, Industrial Stepper Motor Control, Solenoid and Valve Driver Array, DC Motor Bidirectional Drive (Forward/Reverse), LED Array and Indicator Matrix.
Automotive HVAC Flap Actuators
The TLE8444SLXUMA1's four half-bridges directly drive up to four small DC brush motors used in HVAC mode-door, recirculation, and temperature-mix flaps. Each half-bridge delivers up to 0.9 A continuous with overcurrent shutdown, well matched to actuator stall currents of 200-500 mA. The exposed PG-SSOP-24-7 pad keeps junction temperature within the -40 C to +150 C automotive grade envelope. AEC-Q100 qualification permits direct integration into under-dash ECUs.
推薦
Headlight Beam-Leveling Motor Drive
Two of the TLE8444SLXUMA1's four half-bridges configured as a single full H-bridge drive the bi-directional leveling motor in adaptive headlamp modules. The 1.3 Ohm RDS(on) minimizes conduction loss at the typical 200-400 mA operating current, while integrated open-load and short-to-ground diagnostics detect mechanical stalls. AEC-Q100 Grade 0 temperature rating tolerates under-hood thermal stress. Logic-level inputs interface directly to 3.3 V body-controller MCUs.
推薦
Industrial Stepper Motor Control
Wire the TLE8444SLXUMA1's four outputs as two full H-bridges to drive a bipolar stepper motor with up to 0.9 A peak phase current. The 1.3 Ohm RDS(on) provides adequate torque margin for NEMA 11 and small NEMA 17 frame sizes, while the parallel interface allows direct connection to industrial PLCs or microcontroller GPIO. The exposed thermal pad supports continuous four-channel operation on a 4-layer PCB.
推薦
Solenoid and Valve Driver Array
Each half-bridge can drive a low-side solenoid or relay coil, and pairs of bridges form push-pull valve actuators. The TLE8444SLXUMA1's integrated freewheeling diodes eliminate external flyback components, while the 0.9 A overcurrent threshold protects against coil short circuits. Diagnostic feedback flags open-load and short-to-battery conditions to the host MCU, critical for safety-critical fluid control systems.
推薦
DC Motor Bidirectional Drive (Forward/Reverse)
Two half-bridges of the TLE8444SLXUMA1 form a complete H-bridge for bidirectional control of a single brushed DC motor in applications such as seat adjusters, mirror tilt, or window lift modules. With 1.3 Ohm RDS(on) per switch and 0.9 A overcurrent protection, the driver handles small motor inrush transients. AEC-Q100 qualification and the SSOP-24 footprint support direct placement on compact automotive PCBAs.
推薦
LED Array and Indicator Matrix
The TLE8444SLXUMA1's four half-bridges drive up to four independent LED strings with PWM dimming via the logic inputs. Each low-side switch sources up to 0.9 A, sufficient for automotive interior lighting, status indicators, or small signage arrays. The device's parallel interface allows direct 3.3 V MCU control with no driver level shifters required, reducing BOM cost versus SPI-led alternatives.
推薦
推薦產品摘要
工程參考資料，適用於 TLE8444SLXUMA1 — 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 | TLE8444SL | TLE8444SLXT |
|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies - same | Infineon Technologies - same |
| Package | PG-SSOP-24-7 (exposed pad) | PG-SSOP-24-7 - same | PG-SSOP-24-7 - same |
| Topology | Quad Half-Bridge | Quad Half-Bridge - same | Quad Half-Bridge - same |
| Supply Voltage | 4.5 V to 24 V | 4.5 V to 24 V | 4.5 V to 24 V |
| On-Resistance (RDS(on)) | 1.3 Ohm typical | 1.3 Ohm typical | 1.3 Ohm typical |
| Overcurrent Shutdown | 0.9 A per channel | 0.9 A per channel | 0.9 A per channel |
| Interface | Parallel | Parallel | Parallel |
| AEC-Q100 | Qualified | Qualified | Qualified |
主要差異化特點
- Quad half-bridge topology in a single SSOP-24 package (對比BTN7971B (single half-bridge, TO-263 package))
- Parallel logic interface (no SPI required) (對比TLE8082ESXUMA1 (LIN interface))
- AEC-Q100 Grade 0 with 150 C junction temperature (對比Industrial-only motor drivers without AEC-Q100)
設計說明
Estimated: at VBB=12 V, full H-bridge output driving 500 mA continuous through both switches, conduction loss per switch is approximately 325 mW (I^2 x RDS(on)). Four bridges fully loaded would dissipate around 1.3 W. The PG-SSOP-24-7 exposed pad is the primary thermal path - solder it to a minimum 1 sq.in. copper pour on a 4-layer PCB to keep junction temperature rise within the 150 C automotive limit.
Place a 100 nF ceramic decoupling capacitor as close as possible to the VBB pin to suppress supply transients caused by DMOS switching. Add a bulk electrolytic (>= 47 uF) on the VBB rail to handle motor back-EMF. The integrated freewheeling diodes handle inductive kickback, but external TVS protection is recommended for severe automotive load-dump events exceeding 35 V transient rating.
Route the high-current OUT1-OUT4 traces with minimum 2 oz copper or wider traces to limit voltage drop. Keep logic inputs (IN1-IN4, INH) physically separated from power outputs to avoid capacitive coupling that could falsely trigger logic transitions. Place the exposed thermal pad on a continuous copper plane with thermal vias (0.3 mm drill, 1 mm pitch) to inner copper planes for optimal heat spreading.
Do not drive the logic inputs (IN1-IN4) with voltages exceeding 5.5 V; the inputs are 5 V CMOS tolerant and 3.3 V compatible but not 12 V tolerant. Do not leave the INH pin floating - tie it to logic high through a 10 kOhm resistor to ensure the device defaults to enabled state at power-up. Never operate without the exposed thermal pad soldered, as thermal resistance degrades sharply and may trigger overtemperature shutdown.
合規資訊
AEC-Q100 qualified per Newark product description and Infineon automotive marketing. RoHS and REACH compliance confirmed by Infineon product page. Halogen-free status not explicitly stated in the verified web data.
