TLE72732GV33XUMA1 - 3.3V 180mA LDO w/ Window Watchdog | Infineon
부품 번호: TLE72732GV33XUMA1 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $2.95 | $2.95 |
| 10 | $2.62 | $26.20 |
| 100 | $2.18 | $218.00 |
| 500 | $1.84 | $920.00 |
| 1,000 | $1.55 | $1,550.00 |
| 2,500 | $1.32 | $3,300.00 |
TLE72732GV33XUMA1 개요
An LDO (Low-Dropout) regulator is a type of linear voltage regulator that can maintain a stable output voltage even when the input voltage approaches the output voltage, with dropout typically under 500 mV. Within the broader power-management IC hierarchy, LDOs sit beneath switching regulators and are preferred for low-noise rails where efficiency is secondary to ripple rejection. The TLE7273-2G family occupies the automotive microcontroller-supply sub-segment, where integrated supervision (watchdog + reset) reduces external component count on the ECU PCB.
Key features include ±2% output voltage accuracy, an integrated adjustable-window watchdog (via external resistor), a push-pull reset output with programmable reset delay, current limiting, thermal shutdown, and reverse-polarity protection on the input. The exposed pad on the PG-DSO-14 package provides low thermal resistance for sustained 180 mA loads at elevated ambient temperatures.
The regulator uses a bipolar pass-element architecture combined with a bandgap reference, optimized for automotive transient robustness including jump-start and load-dump immunity per ISO 7637. The wide VIN window (up to 45 V transient) and AEC-Q100 Grade 1 qualification (-40 °C to +125 °C junction) make it well suited to under-hood and chassis ECUs.
Typical applications include body control modules, gateway ECUs, sensor cluster power rails, HVAC controllers, and lighting ECUs. Any 12 V or 24 V automotive ECU requiring a regulated 3.3 V logic rail with built-in microcontroller supervision is a strong fit. When designing with this part, choose the external resistor at the WADJ pin carefully to set the watchdog window to match the microcontroller's service pulse timing - a misaligned window will trigger spurious resets. The exposed pad must be soldered to a sufficient copper pour to keep junction temperature within SOA at full 180 mA load.
드롭인 대체품: TLE72732GV33XUMA1 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: TLE72732GV33XUMA1 (동일 폼 팩터 및 풋프린트) — 차이점: Input Voltage Range, Maximum Output Current, Operating Temperature, Package, RoHS Status.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
TLE72732GV33XUMA2
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLE72732GV33XT
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLE72732GV50XUMA1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLE72732GV26XUMA1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLS810A1LDV33XUMA1
✅ 드롭인✓ 재고 있음
$0.68 / 개
데이터시트 보기 →TLE42702GATMA1
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
TLE72732GV33XUMA1 최대 정격 & 전기적 특성
| Manufacturer | Infineon |
| Product Type | LDO Linear Voltage Regulator |
| 출력 유형 | Fixed |
| 출력 전압 | 3.3 V |
| Output Voltage Accuracy | ±2% |
| 최대 출력 전류 | 180 mA |
| 입력 전압 범위 | 5.5 V to 45 V |
| Watchdog Type | Integrated window watchdog |
| Reset Output | Yes, push-pull |
| 동작 온도 | -40 °C to +125 °C (AEC-Q100 Grade 1) |
| 패키지 | PG-DSO-14 (exposed pad) |
| 핀 수 | 14 |
| 실장 유형 | Surface Mount |
| Automotive Grade | AEC-Q100 qualified |
| RoHS 상태 | Compliant |
TLE72732GV33XUMA1 핀 구성
| 핀 1 | I — Input voltage (battery rail) |
| 핀 2 | I — Input voltage (battery rail, second pin for high-current) |
| 핀 3 | GND — Ground |
| 핀 4 | RO — Reset output (push-pull) |
| 핀 5 | RT — Reset delay timing (external capacitor) |
| 핀 6 | WADJ — Watchdog window adjustment (external resistor) |
| 핀 7 | WI — Watchdog input (MCU service pulse) |
| 핀 8 | Q — Output voltage (3.3V regulated) |
| 핀 9 | Q — Output voltage (second pin for high-current) |
| 핀 10 | NC — Not connected (per datasheet) |
| 핀 11 | NC — Not connected (per datasheet) |
| 핀 12 | NC — Not connected (per datasheet) |
| 핀 13 | NC — Not connected (per datasheet) |
| 핀 14 | TAB — Exposed thermal pad (connect to GND) |
일반적인 애플리케이션
TLE72732GV33XUMA1 적합 용도: 6 애플리케이션s: Automotive Body Control Module (BCM), Automotive Gateway ECU, HVAC Control Module, Automotive Sensor Cluster, Automotive Lighting ECU, Industrial 24V Sensor / Controller.
Automotive Body Control Module (BCM)
The TLE72732GV33XUMA1 is purpose-built for 12V automotive body ECUs that must supervise a 3.3V microcontroller. Its 180 mA continuous load capability comfortably powers an MCU plus CAN/LIN transceivers and discrete logic. The integrated window watchdog catches stuck-at or runaway MCU firmware - a safety-critical requirement for BCMs controlling lighting, locks, and wipers - and the AEC-Q100 Grade 1 qualification plus 45V input tolerance handles jump-start and load-dump transients. Compared to a discrete LDO plus external watchdog IC, the TLE7273-2G cuts PCB area by roughly 40%.
추천
Automotive Gateway ECU
Vehicle gateway ECUs route CAN/CAN-FD/LIN/Ethernet traffic between body, powertrain, and ADAS domains and require a reliable 3.3V rail for the host processor. The TLE72732GV33XUMA1's 5.5V-45V wide-VIN input tolerates the 24V battery systems increasingly common in heavy-truck and EV architectures. The integrated reset and window watchdog guarantee a deterministic MCU boot and ongoing firmware liveness, both mandatory for ASIL-rated gateway designs. The 14-pin PG-DSO-14 footprint minimizes PCB real estate in the typically space-constrained gateway housing.
추천
HVAC Control Module
Heating, ventilation, and air-conditioning (HVAC) modules run MCUs that control blowers, valves, and temperature sensors, all powered from a 12V battery rail. The TLE72732GV33XUMA1's ±2% output accuracy keeps sensor readings and actuator PWM references precise, while its integrated window watchdog protects against MCU lock-ups that could disable cabin climate control. The 45V transient survival comfortably handles HVAC load-dump events from the blower-motor inductive kickback. AEC-Q100 Grade 1 qualification covers the wide -40°C to +125°C under-dash temperature range.
추천
Automotive Sensor Cluster
Sensor clusters consolidate multiple IMU, pressure, and temperature sensors into a single ECU, each requiring a clean 3.3V supply. The TLE72732GV33XUMA1's low output noise and ±2% accuracy preserve sensor measurement precision, while 180 mA supports roughly 6-8 active sensors simultaneously. The integrated watchdog ensures the cluster's central MCU keeps servicing sensors and reporting data to the vehicle CAN bus - a missing reset could mask a critical sensor failure. PG-DSO-14 exposed pad simplifies thermal management in the cramped sensor housing.
추천
Automotive Lighting ECU
LED headlamp and tail-light ECUs require stable 3.3V logic rails alongside high-current LED driver stages, with microcontroller supervision for adaptive-lighting and turn-signal logic. The TLE72732GV33XUMA1 supplies the MCU and housekeeping logic, while the integrated watchdog meets ISO 26262 functional-safety expectations for lighting control - a stuck MCU must not leave high beams stuck on. Reverse-polarity and load-dump protection on-chip reduce the external TVS/MOSFET bill of materials in the headlamp module.
추천
Industrial 24V Sensor / Controller
Outside of automotive, the TLE72732GV33XUMA1 is also well suited to industrial 24V controllers and PLC I/O modules that benefit from its wide VIN tolerance and watchdog supervision. The 5.5V-45V range tolerates industrial 24V bus transients, and the window watchdog protects PLC firmware from lock-up on the factory floor. Although not specifically marketed as industrial-grade, the AEC-Q100 qualification provides headroom above typical commercial-grade temperature and reliability expectations, making the TLE7273-2G a popular choice for rugged industrial sensor platforms.
추천
추천 제품 요약
엔지니어링 참조 데이터: TLE72732GV33XUMA1 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | TLE72732GV33XUMA2 | TLE72732GV33XT | TLE72732GV50XUMA1 | TLE72732GV26XUMA1 | TLS810A1LDV33XUMA1 | TLE42702GATMA1 |
|---|---|---|---|---|---|---|---|
| Package | PG-DSO-14 (exposed pad) | PG-DSO-14 (exposed pad) - same | PG-DSO-14 (exposed pad) - same | PG-DSO-14 (exposed pad) - same | PG-DSO-14 (exposed pad) - same | PG-DSO-14 (exposed pad) - same | PG-DSO-14 (exposed pad) - same |
| Brand | Infineon | Infineon - same | Infineon - same | Infineon - same | Infineon - same | Infineon - same | Infineon - same |
| Output Voltage | 3.3 V | 3.3 V | 3.3 V | 5.0 V | 2.6 V | 3.3 V | 5.0 V |
| Maximum Output Current | 180 mA | 180 mA | 180 mA | 180 mA | 180 mA | 180 mA | 550 mA |
| Input Voltage Range | 5.5 V to 45 V | 5.5 V to 45 V | 5.5 V to 45 V | 5.5 V to 45 V | 5.5 V to 45 V | 3.0 V to 40 V | 5.5 V to 42 V |
| Window Watchdog | Yes | Yes | Yes | Yes | Yes | No | No |
| Reset Output | Yes (push-pull) | Yes | Yes | Yes | Yes | No | Yes |
| AEC-Q100 Grade | Grade 1 | Grade 1 | Grade 1 | Grade 1 | Grade 1 | Grade 1 | Grade 1 |
| Approx. 1k Price (USD) | 1.55 | 1.55 | 1.55 | 1.55 | 1.55 | 1.20 | 1.10 |
주요 차별점
- Integrated window watchdog + reset on-chip (vs TLS810A1LDV33XUMA1)
- Wider 45 V input range vs 42 V on similar regulators (vs TLE42702GATMA1)
- Lower 180 mA continuous rating vs 550 mA on TLE42702GATMA1 (vs TLE42702GATMA1)
설계 노트
The PG-DSO-14 exposed pad must be soldered to a PCB copper pour of at least 1 square inch to keep junction temperature below the 125 °C AEC-Q100 ceiling. Estimated: at VIN=12V, VOUT=3.3V, IOUT=180 mA, dissipation ≈ 1.6 W; without a thermal pad, θJA would exceed 60 °C/W. With 1-2 sq-in of 2 oz copper, θJA falls to 35-45 °C/W, yielding a junction rise of 56-72 °C above 25 °C ambient - safe headroom for under-hood ECUs at 85 °C ambient.
Place input bulk capacitance (typically 22 µF) as close to pins 1-2 (I) as possible to handle 12V automotive transients. Output capacitors (≥ 4.7 µF ceramic, low-ESR) should be within 5 mm of pins 8-9 (Q) for loop stability. Keep the WADJ resistor and RT capacitor traces short - long traces pick up noise that can falsely trigger watchdog or reset events. The exposed pad (pin 14 / TAB) should be soldered to a continuous ground pour with multiple thermal vias to the inner/ground plane.
Selecting the wrong WADJ resistor value is the most common TLE7273-2G design error - it produces spurious watchdog resets (window too narrow) or fails to catch MCU faults (window too wide). Always calculate the resistor per the datasheet's WADJ equation based on the MCU's worst-case service-pulse period under all operating conditions. Do not omit the RT reset-delay capacitor; without it the reset pulse width is undefined and the MCU may boot unpredictably. Finally, verify that input transients (jump-start, load-dump) are within the 45V absolute-max rating - additional TVS protection may be required for 24V commercial-vehicle applications.
규정 준수 정보
AEC-Q100 Grade 1 qualified per Infineon datasheet. RoHS and REACH compliant (PG = Plastic Green, lead-free). Halogen-free per Infineon product-family standard.
