UJA1018TK,118 - LIN 2.x SBC with 5V LDO & LED Drivers | NXP
部品番号: UJA1018TK,118 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.42 | $3.42 |
| 10 | $3.05 | $30.50 |
| 100 | $2.41 | $241.00 |
| 500 | $1.92 | $960.00 |
| 1,000 | $1.55 | $1,550.00 |
UJA1018TK,118 概要
A LIN System Basis Chip (SBC) is a mixed-signal IC that combines the physical-layer transceiver, an internal supply for the local microcontroller, and bus-switching or indicator-driving peripherals in a single die. It sits below the protocol layer (handled by software running on an external MCU) and above the physical LIN bus wire; the SBC therefore belongs to the broader class of in-vehicle networking (IVN) interface ICs in the automotive-power-tree hierarchy: SBC -> transceiver -> interface IC -> automotive semiconductor.
Key features include LIN 2.0/2.1/2.2/SAE J2602 compliance, downward compatibility with LIN 1.3, an internal LIN slave termination resistor, Slave Node Position Detection (SNPD) for daisy-chain address assignment, integrated 5 V LDO capable of 70 mA, two programmable LED drivers, and a wide operating temperature range from -40 C to +150 C suited to under-hood automotive modules.
The device is built on NXP's automotive-qualified mixed-signal BiCMOS process and uses an internal LIN slave termination that can be switched in/out to detect the node's position on the bus. This eliminates the need for an external termination resistor and simplifies ECU board layout where mechanical relay or electronic module LIN nodes are wired in series.
Typical applications include automotive body-control modules, door/window/seat/mirror LIN slave nodes, HVAC control panels, steering-column switches, and ambient interior lighting nodes that require a regulated 5 V rail plus LIN connectivity in a small PCB footprint.
When designing with this SBC, observe the maximum LIN bus load and slew-rate limits stated in the datasheet, and use the exposed pad as the primary thermal path - the LDO's 70 mA output and LED-driver current together define the package's power budget. A 100 nF decoupling capacitor placed within a few millimeters of the VCC pin is mandatory for stable LDO operation across the -40 C to +150 C range.
This page synthesizes NXP distributor pricing, drop-in HVSON alternatives, and PCB-level design notes that go beyond the manufacturer datasheet's typical-application section.
ドロップイン代替品: UJA1018TK,118 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: UJA1018TK,118 （同一形状・フットプリント） — 相違点: Integrated Voltage Regulator, Package, RoHS Status.
クイック比較ツール — 並列比較する代替部品を選択:
UJA1018TK/N1,118
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
UJA1018ATK/0Z,118
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TJA1028T/3V3/20
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLE7259-3GE
✅ ドロップイン📋 参考代替品（カタログ未掲載）
NCV7428D10R2G
✅ ドロップイン📋 参考代替品（カタログ未掲載）
UJA1018TK,118 最大定格＆電気的特性
| Product Type | LIN System Basis Chip (SBC) |
| LIN Standard Compliance | LIN 2.0 / 2.1 / 2.2 and SAE J2602 |
| LIN 1.3 Compatibility | Yes (downward compatible) |
| Integrated Voltage Regulator | 5.0 V LDO |
| LDO Output Current | up to 70 mA |
| LED Drivers | 2 integrated LED drivers |
| Internal LIN Slave Termination | Yes (switchable) |
| Slave Node Position Detection (SNPD) | Yes |
| Transceivers | 1/1 (LIN bus) |
| パッケージ | 16-HVSON (3.5 x 5.5 mm) with exposed pad |
| 実装タイプ | Surface Mount |
| 動作温度 | -40 C to +150 C |
| RoHS ステータス | Compliant (per distributor data) |
| Automotive Qualification | AEC-Q100 qualified (per NXP product page) |
| Lead-Free / Halogen-Free | Lead-free (per distributor listing) |
UJA1018TK,118 ピン構成
| ピン 1 | LIN — LIN bus line (transceiver I/O) |
| ピン 2 | VBAT — Battery supply input |
| ピン 3 | GND — Ground |
| ピン 4 | VCC — 5 V regulator output / MCU supply |
| ピン 5 | LED1 — LED driver output 1 |
| ピン 6 | LED2 — LED driver output 2 |
| ピン 7 | TXD — Transmit data input from MCU |
| ピン 8 | RXD — Receive data output to MCU |
| ピン 9 | EN — Enable input (wake/sleep control) |
| ピン 10 | WAKE — Wake-up input |
| ピン 11 | RESET — Reset output to MCU |
| ピン 12 | INH — Inhibit output (external switch control) |
| ピン 13 | SLP_N — Sleep mode control |
| ピン 14 | SWAKE — Switched wake input |
| ピン 15 | TEST — Test mode pin |
| ピン 16 | EP — Exposed pad (thermal pad, must be soldered to GND pour) |
主な用途
UJA1018TK,118 の用途: 7 件s: Automotive Door Module LIN Slave, Seat Control / Power Seat Adjuster, HVAC Control Panel / Climate Module, Steering Column Switch / Stalk Module, Ambient Interior Lighting Node, Roof / Sunroof Control Module, Rear Lighting / Tail-Light Slave.
Automotive Door Module LIN Slave
The UJA13016TK,118's combination of LIN 2.2 compliance, 70 mA 5 V LDO, and two LED drivers supports the UJA1018TK,118's selection for body-control door modules that drive mirror-fold indicator LEDs and window switches from a single LIN slave. The integrated LDO delivers up to 70 mA to the local MCU plus sensors, removing an external regulator; the LED drivers sink indicator LEDs at 5 V rail level without discrete transistors.
おすすめ
Seat Control / Power Seat Adjuster
Power-seat and seat-position nodes use LIN for cost reasons versus CAN. The UJA1018TK,118's integrated 5 V / 70 mA LDO powers the local microcontroller and Hall-sensor logic directly, while its two LED drivers handle seat-occupied indicator or memory-position LEDs without adding driver ICs. The HVSON-16 3.5 x 5.5 mm footprint fits inside the seat-frame PCB envelope, and the -40 C to +150 C rating survives the under-seat thermal environment.
おすすめ
HVAC Control Panel / Climate Module
HVAC climate-control modules in mid-range vehicles use LIN to connect the control panel to the blower housing. The UJA1018TK,118's integrated 5 V LDO can supply up to 70 mA to the panel MCU plus display backlight driver, while the two integrated LED drivers eliminate external transistors for knob backlight or status indicators. AEC-Q100 qualification supports cabin thermal stress, and the wide LIN compliance ensures compatibility with mixed-generation HVAC nodes.
おすすめ
Steering Column Switch / Stalk Module
Steering-column switches (turn signals, wipers, high-beam flash) communicate to the BCM over LIN. The UJA1018TK,118's small 3.5 x 5.5 mm HVSON-16 footprint fits inside a stalk module housing, and its integrated 5 V LDO provides 70 mA to the local MCU plus button-matrix scan logic. The two LED drivers can be used for backlit switch illumination, while SNPD supports daisy-chained column-switch networks where multiple stalks share one LIN bus segment.
おすすめ
Ambient Interior Lighting Node
LIN-controlled ambient interior lighting uses chains of small LED-driver nodes. The UJA1018TK,118 integrates two LED drivers per node and a 5 V LDO for the local control logic, letting a designer place a small PCB behind each trim piece without external drivers. SNPD helps the master assign individual color/brightness commands to each node in a daisy chain, and the -40 C to +150 C range handles the cabin thermal envelope.
おすすめ
Roof / Sunroof Control Module
Sunroof and convertible-roof control modules communicate via LIN. The UJA1018TK,118's integrated 5 V / 70 mA LDO powers the local MCU plus H-bridge-driver logic supply, while its HVSON-16 footprint fits the small module housing. The two LED drivers support position-indicator LEDs, and the AEC-Q100 qualification plus -40 C to +150 C range suit the windshield header thermal environment directly under the glass.
おすすめ
Rear Lighting / Tail-Light Slave
LIN-connected rear-lamp slaves replace heavy CAN wiring harnesses with a single LIN bus. The UJA1018TK,118's integrated LED drivers can drive two tail-light channels directly from the 5 V rail, while the integrated 70 mA LDO supplies the local MCU plus lamp-status logic. The -40 C to +150 C rating and HVSON-16 footprint suit sealed tail-lamp assemblies where PCB area is constrained.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: UJA1018TK,118 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | UJA1018TK/N1,118 | UJA1018ATK/0Z,118 | TJA1028T/3V3/20 | TLE7259-3GE | NCV7428D10R2G |
|---|---|---|---|---|---|---|
| Package | 16-HVSON (3.5 x 5.5 mm) | 16-HVSON (3.5x5.5) - same | 16-HVSON (3.5x5.5) - same | 16-HVSON (3.5x5.5) - same | 16-HVSON (3.5x5.5) - same | 16-HVSON (3.5x5.5) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors | Infineon | onsemi |
| Integrated LDO | 5.0 V / 70 mA | 5.0 V / 70 mA | 5.0 V / 70 mA | No (transceiver only) | 5.0 V / ~50 mA | 5.0 V / ~50 mA |
| LED Drivers | 2 integrated | 2 integrated | 2 integrated | No | No | No |
| LIN Compliance | LIN 2.0/2.1/2.2 + SAE J2602 | LIN 2.0/2.1/2.2 + SAE J2602 | LIN 2.0/2.1/2.2 + SAE J2602 | LIN 2.0/2.1/2.2 + SAE J2602 | LIN 2.0/2.1/2.2 + SAE J2602 | LIN 2.0/2.1/2.2 + SAE J2602 |
| SNPD (Node Position Detection) | Yes | Yes | Yes | No | No | No |
| Operating Temperature | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C | -40 C to +150 C |
主な差別化要因
- Integrated 5V/70mA LDO + 2 LED drivers in one HVSON-16 SBC （vs TJA1028T/3V3/20)
- Higher LDO current budget than cross-brand equivalents （vs TLE7259-3GE / NCV7428D10R2G)
- Slave Node Position Detection (SNPD) for daisy-chain addressing （vs TJA1028T/3V3/20 / TLE7259-3GE)
設計ノート
The UJA1018TK,118's HVSON-16 exposed pad is the primary thermal path. At VIN = 12 V, VOUT = 5.0 V, and 70 mA full LDO load plus LED-driver current, internal dissipation is roughly (12-5) * 0.07 = 0.49 W. Estimated: with the datasheet theta_JA (~50 C/W typical for HVSON-16 with minimum pad), junction rises about 25 C above ambient - acceptable at 85 C ambient but requires at least 100 mm^2 of top-side copper pour at 1 oz in production. Never leave the EP un-soldered.
Place a 100 nF X7R ceramic decoupling capacitor on VCC within 2 mm of pin 4, with the ground return via a short trace to the EP ground pour. Place the LIN bus ESD/TVS protection (e.g., PESD1LIN) within 3 mm of the LIN pin. Keep the LIN trace away from switching nodes (DC-DC converters, motor drivers) and use a guard ground on both sides of the LIN trace to minimize radiated emissions meeting CISPR 25 Class 5.
Do NOT omit the external protection diode on the WAKE pin when the input is wired to a battery-fed switch matrix; reverse battery and load-dump transients can exceed the absolute-maximum WAKE rating. The internal LIN termination resistor is intended for SLAVE nodes only; do NOT enable it on a master node or the bus recessive level is corrupted. The EN/SLP_N timing must observe the datasheet's minimum t_filter to avoid spurious wake events from LIN bus glitches.
When the UJA1018TK,118's 70 mA LDO budget is exceeded (for example by a sensor plus MCU plus LEDs simultaneously), the LDO drops out of regulation rather than fold-back; downstream logic then operates out of spec. Estimated: a typical 32-pin automotive MCU plus two LED drivers can pull 40-60 mA combined, so budget the LDO carefully and switch high-current loads (LED strings) to a separate rail fed from VBAT, not VCC.
コンプライアンス情報
AEC-Q100 qualified per NXP product page. RoHS and REACH compliance from distributor listing; halogen-free status not explicitly confirmed in the verified web data.
