TLIN1029DRBRQ1 - LIN Transceiver w/ Vreg 20kBd Auto AEC-Q100
料号： TLIN1029DRBRQ1 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $1.65 | $1.65 |
| 10 | $1.45 | $14.50 |
| 100 | $1.18 | $118.00 |
| 500 | $0.92 | $460.00 |
| 1,000 | $0.78 | $780.00 |
| 3,000 | $0.66 | $1,980.00 |
TLIN1029DRBRQ1 概述
A LIN (Local Interconnect Network) transceiver is a single-wire bidirectional bus interface IC that connects low-cost body-electronics modules (door locks, mirrors, seat controllers, HVAC flaps) to a vehicle's central body control module. As a sub-class of in-vehicle networking, LIN sits below CAN-FD in the automotive network hierarchy - LIN -> sub-bus -> body network -> vehicle network -> automotive electronics. The TLIN1029 family specifically adds an integrated LDO to power the local microcontroller from the LIN bus supply, eliminating the need for an external regulator.
Key features of the TLIN1029DRBRQ1 include AEC-Q100 Grade 1 qualification for automotive applications, integrated dominant state timeout to prevent a single node from hogging the bus, ±42-V bus fault tolerance, ±15-kV HBM ESD protection on the LIN pin, and ultra-low current sleep mode with remote/local wake-up support. The integrated LDO delivers up to 70 mA to power local sensors or microcontrollers directly from the bus.
Technically, the part operates over a 4.5-V to 36-V supply range (Load Dump tolerant up to 42 V), consumes less than 10 µA in sleep mode, and includes thermal shutdown, undervoltage lockout, and reverse-battery protection. The 8-pin VSON EP (3x3 mm) package provides an exposed thermal pad for enhanced power dissipation in harsh under-hood or door-module operating environments.
Typical applications include automotive body control modules, HVAC control, mirror and seat adjustment modules, steering column switches, sunroof controllers, and lighting modules. The integrated regulator eliminates one external component, reducing BOM cost and PCB area in space-constrained body-electronics modules.
When designing with the TLIN1029DRBRQ1, add a reverse-battery protection diode or MOSFET on the supply pin for ISO 7637-2 transient compliance, and follow the LIN bus termination guidelines (master typically adds 1 kΩ + diode; slave uses internal pull-up). The WAKE pin allows local wake-up from the bus without a full MCU boot.
This page synthesizes distributor availability, AEC-Q100 qualified drop-in alternatives, and automotive LIN bus design notes not found in the manufacturer datasheet alone.
直接替换替代料： TLIN1029DRBRQ1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
TLIN1029DRBTQ1
✅ 直接替换📋 参考替代料（不在目录中）
TLIN1021ADRBRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TLIN2029DRBRQ1
✅ 直接替换📋 参考替代料（不在目录中）
TLIN1029DRBRQ1 规格参数
| 功能 | LIN Transceiver with Integrated Vreg |
| Protocol | LIN 2.0/2.1/2.2/2.2A, ISO 17987-4, SAE J2602-1 |
| 数据速率 | up to 20 kbps |
| Number of Drivers/Receivers | 1/1 |
| Supply Voltage Range | 4.5 V to 36 V (Load Dump tolerant to 42 V) |
| Bus Fault Tolerance | ±42 V on LIN pin |
| ESD Protection (HBM, LIN pin) | ±15 kV |
| Integrated LDO Output Current | up to 70 mA |
| Sleep Current | < 10 µA (typical) |
| Dominant State Timeout | Yes (built-in) |
| 工作温度范围 | -40 °C to +125 °C |
| 封装 | 8-pin VSON EP (DRB) 3x3 mm |
| 安装类型 | Surface Mount |
| AEC-Q100 Qualification | Grade 1, Qualified |
| RoHS / Lead-Free | Compliant / Lead-free |
TLIN1029DRBRQ1 引脚配置
| 引脚 1 | TXD — Transmit data input from MCU |
| 引脚 2 | GND — Ground reference |
| 引脚 3 | VCC — Integrated LDO regulator output (up to 70 mA) |
| 引脚 4 | RXD — Receive data output to MCU |
| 引脚 5 | VSUP — Battery supply input (4.5 V to 36 V) |
| 引脚 6 | LIN — LIN bus line (single-wire bidirectional) |
| 引脚 7 | WAKE — Local wake-up input |
| 引脚 8 | EN — Enable input (active high) |
典型应用
TLIN1029DRBRQ1 适用于 6 应用s: Automotive Body Control Modules, HVAC Zone and Air Damper Modules, Power Mirror and Seat Adjustment Modules, Steering Column Switch and Stalk Modules, Sunroof and Convertible Top Controllers, Interior Lighting and Ambient LED Modules.
Automotive Body Control Modules
The TLIN1029DRBRQ1's AEC-Q100 Grade 1 qualification and integrated LDO make it ideal for body control modules that switch lighting, locks, and accessory relays. The integrated regulator supplies up to 70 mA to a small MCU, eliminating a separate 3.3 V regulator. With ±42 V bus fault tolerance and ±15 kV HBM ESD on the LIN pin, the part survives ISO 7637-2 transients and ESD strikes common in body-electronic environments. Designers typically place 1 nF + 100 nF bypass caps near VCC and use a 1 kΩ master pull-up with reverse-battery diode.
推荐
HVAC Zone and Air Damper Modules
For HVAC zone controllers, the TLIN1029DRBRQ1 acts as a slave node on a LIN sub-bus connected to the climate control master. The integrated LDO powers the local MCU that drives stepper motors or BLDC damper actuators. With 20 kbps LIN bandwidth and dominant-state timeout, the bus is protected from a faulty node holding the line low. Per TI datasheet guidance, the WAKE pin supports local wake-up from the climate control panel push-button, allowing instant response from sleep mode under 10 µA quiescent current.
推荐
Power Mirror and Seat Adjustment Modules
Mirror and seat modules are classic LIN slave nodes due to their moderate bandwidth needs and cost-sensitive BOM targets. The TLIN1029DRBRQ1's integrated regulator supplies both the position-feedback MCU and the motor-driver logic from a single rail. AEC-Q100 Grade 1 qualification ensures compliance with automotive temperature and reliability requirements up to +125 °C. The VSON-8 EP (3x3 mm) footprint allows compact PCB layouts inside mirror glass housings and beneath seat trim panels where board area is at a premium.
推荐
Steering Column Switch and Stalk Modules
Steering column switches integrate turn-signal, wiper, headlight, and cruise-control inputs and route them over a single LIN wire to the BCM. The TLIN1029DRBRQ1's low sleep current under 10 µA preserves battery life when the vehicle is parked, while the WAKE pin allows instant wake-up on any stalk actuation. Its ±42 V bus fault tolerance and ±15 kV HBM ESD protect the IC from the noisy electrical environment near the steering column, where the harness is routed close to switched inductive loads.
推荐
Sunroof and Convertible Top Controllers
Sunroof and convertible top modules require a robust LIN slave interface to receive commands from the body controller while driving motors, Hall sensors, and rain/light sensors. The TLIN1029DRBRQ1's integrated LDO simplifies the BOM, and its wide 4.5-36 V supply range tolerates 12 V cranking transients. With dominant state timeout built in, a stalled mechanism cannot lock the LIN bus, improving overall vehicle network reliability. Designers add a 100 Ω LIN bus termination and reverse-battery protection on VSUP per TI datasheet recommendations.
推荐
Interior Lighting and Ambient LED Modules
Interior ambient lighting modules use LIN slaves to control RGB LED strings, reading illumination setpoints from the body controller. The TLIN1029DRBRQ1's small VSON-8 EP (3x3 mm) footprint fits inside narrow light-guide housings. The integrated LDO powers the local MCU that drives an LED driver like the TLC5558. AEC-Q100 Grade 1 qualification and -40 to +125 °C operation cover the harsh thermal environment inside headliner and door-trim LED modules that may see direct sunlight through glass.
推荐
推荐产品汇总
工程参考数据： TLIN1029DRBRQ1 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | TLIN1029DRBTQ1 | TLIN1021ADRBRQ1 | TLIN2029DRBRQ1 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 8-VSON EP (DRB) 3x3 mm | 8-VSON EP (DRB) 3x3 mm - same | 8-VSON EP (DRB) 3x3 mm - same | 8-VSON EP (DRB) 3x3 mm - same |
| Integrated LDO | Yes (up to 70 mA) | Yes (up to 70 mA) | No (external regulator required) | Yes (lower-power variant) |
| LIN Protocol | LIN 2.0/2.1/2.2/2.2A, ISO 17987-4 | LIN 2.0/2.1/2.2/2.2A, ISO 17987-4 | LIN 2.0/2.1/2.2/2.2A, ISO 17987-4 | LIN 2.0/2.1/2.2/2.2A, ISO 17987-4 |
| Bus Fault Tolerance | ±42 V | ±42 V | ±42 V | ±42 V |
| AEC-Q100 | Yes (Grade 1) | Yes (Grade 1) | Yes (Grade 1) | Yes (Grade 1) |
| Dominant State Timeout | Yes | Yes | Yes | Yes |
| Packaging Quantity | 3000 / reel | 250 / reel | 3000 / reel | 3000 / reel |
关键差异点
- Integrated 70 mA LDO regulator inside LIN transceiver （对比 TLIN1021ADRBRQ1)
- Same DRB package as TLIN1021A family for design reuse （对比 TLIN1029DQ1 (SOIC-8 variant))
- AEC-Q100 Grade 1 with ±15 kV HBM ESD on LIN pin （对比 Industrial-only LIN transceivers)
设计说明
Add a reverse-battery protection diode or P-MOSFET on the VSUP pin to protect against reverse polarity and to meet ISO 7637-2 transient immunity for 12-V automotive systems. Place a 100 nF ceramic bypass capacitor as close as possible to the VSUP pin and a 1 µF to 10 µF bulk capacitor on the VCC (LDO) pin to ensure stable regulator operation. The integrated LDO delivers up to 70 mA; derate by 25% at +125 °C for thermal margin.
Solder the exposed pad (EP) of the VSON-8 DRB package to a continuous ground copper pour for both thermal dissipation and low-impedance ground return. Recommended land pattern follows TI's VSON-8 EP footprint in the datasheet (3 mm × 3 mm body). Keep the LIN bus trace short and routed away from noisy switching signals; place the LIN bus pull-up master resistor and series diode near the master node connector, not at every slave.
The LIN bus is a single-wire interface with controlled slew rate to limit EMI emissions. Avoid adding capacitive load beyond the LIN specification (typically < 250 pF node capacitance including cable and stub). The TLIN1029DRBRQ1's integrated slew-rate control meets LIN 2.x EMC requirements without external capacitors. For CISPR 25 Class 5 compliance, add a ferrite bead on the VSUP supply line and a common-mode choke on the LIN harness if long cable runs are present.
Do not omit the dominant-state timeout disable if required for legacy systems - the TLIN1029DRBRQ1 includes dominant timeout per LIN 2.x spec. Always use 1% tolerance resistors for the bus termination master pull-up (typically 1 kΩ + diode). Do not apply voltages above 36 V to VSUP during jump-start or load-dump events without external TVS protection - the internal clamp handles ISO 7637-2 pulses but sustained overvoltage will damage the IC.
For long LIN bus harnesses (>1.5 m total bus length), verify that the round-trip propagation delay does not exceed the LIN spec for 20 kbps (which gives ~14 nms bit time budget for the master to detect slave response). The TLIN1029DRBRQ1's RXD output rise/fall times meet the LIN 2.x/ISO 17987-4 specification with margin, but stubs longer than 30 cm should be avoided. Use twisted-pair or twisted-with-ground LIN cable per SAE J2602-1 vehicle practice.
合规信息
AEC-Q100 Grade 1 qualified per TI datasheet. RoHS and lead-free confirmed by TI product page. Halogen-free status not explicitly stated in verified data - marked unknown. Conflict-minerals compliance per TI corporate CMRT filings.
