TLE4270-2D - 5V 650mA LDO Regulator, 42V Input | Infineon
部品番号: TLE4270-2D ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.56 | $1.56 |
| 10 | $1.4 | $14.00 |
| 100 | $1.18 | $118.00 |
| 500 | $1.02 | $510.00 |
| 1,000 | $0.89 | $890.00 |
TLE4270-2D 概要
An LDO (Low-Dropout) linear regulator is a type of voltage regulator that maintains a stable output voltage even when the input voltage approaches the output voltage through a low-dropout pass element. LDOs sit within the broader power management hierarchy as linear regulators, below switching DC-DC converters in efficiency but above Zener diodes in accuracy and regulation. They are preferred for noise-sensitive analog rails because, unlike switching converters, they introduce no switching ripple.
Key features of the TLE4270-2D include integrated overvoltage protection, reverse-polarity protection, overtemperature shutdown, short-circuit current limiting, and ±2 kV HBM ESD protection. The reset functionality with adjustable reset delay and wide operating temperature range make it especially suited to automotive electronics where transients and load-dump events are common. The output voltage tolerance of ≤ ±2 % is maintained across the operating envelope, and the device is short-circuit-proof.
Internally, the TLE4270-2D uses a bipolar pass transistor architecture with a precision bandgap reference, achieving the combination of high input voltage tolerance, low quiescent consumption, and robust automotive transient immunity. The integrated reset circuit generates a power-on reset signal with programmable delay, allowing microcontrollers to supervise the 5 V rail directly.
Typical applications include automotive body and chassis ECUs, industrial PLC I/O supplies, sensor bias rails, microcontroller 5 V supplies with reset supervision, and point-of-load regulation following a switching pre-regulator. The wide input range makes it tolerant of load-dump and jump-start transients in 12 V automotive systems.
When designing with this device, place input and output capacitors close to the pins to ensure stability and transient response. The DPAK tab must be soldered to a sufficient copper pour (typically ≥ 1 square inch) for thermal dissipation under high VIN − VOUT × IOUT conditions. The reset delay is programmed with an external timing capacitor.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
ドロップイン代替品: TLE4270-2D — 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: TLE4270-2D （同一形状・フットプリント） — 相違点: Output Voltage, Package.
クイック比較ツール — 並列比較する代替部品を選択:
TLE4270DNTMA1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLE4675D
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MIC5295-5.0YD
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TL751M05QKVURQ1
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TLE4270-2D 最大定格＆電気的特性
| 出力タイプ | Fixed 5 V |
| 出力電圧 | 5 V |
| Output Voltage Tolerance | ≤ ±2 % |
| 最大出力電流 | 650 mA |
| Input Voltage Range (continuous) | Up to 42 V |
| Input Voltage (transient, ≤ 400 ms) | Up to 65 V (overvoltage protection) |
| Regulation Accuracy (≤ 26 V VIN, ≤ 650 mA) | ±2 % |
| Short-Circuit Protection | Current limit > 650 mA |
| Overvoltage Protection | Yes, up to 65 V (≤ 400 ms) |
| Reverse Polarity Protection | Yes |
| Overtemperature Protection | Yes (integrated thermal shutdown) |
| ESD Protection (HBM) | ±2 kV |
| Reset Functionality | Yes, with adjustable reset delay |
| パッケージ | TO-252-5-11 (DPAK, 4 leads + tab) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
TLE4270-2D ピン構成
| ピン 1 | IN — Input voltage (up to 42 V continuous, 65 V transient ≤ 400 ms) |
| ピン 2 | GND — Ground reference |
| ピン 3 | RESET — Reset output (open-collector, active-low) with adjustable delay |
| ピン 4 | ADJ/RESET DELAY — Reset delay timing capacitor connection |
| ピン 5 | OUT — Regulated 5 V output, up to 650 mA |
| ピン TAB | TAB — Exposed thermal tab, internally connected to GND (must be soldered to copper pour) |
主な用途
TLE4270-2D の用途: 7 件s: Automotive Body and Chassis ECU Supply, Industrial 24 V PLC I/O Power, Sensor Bias and Analog Rail Supply, Microcontroller 5 V Supply with Reset Supervision, Point-of-Load Regulation After Switching Pre-Regulator, HVAC and Climate Control Module Power, Battery Management System Auxiliary Rail.
Automotive Body and Chassis ECU Supply
The TLE4270-2D delivers a stable 5 V rail for body controllers, door modules, and lighting ECUs from a 12 V vehicle battery bus. Its 42 V continuous / 65 V transient input rating absorbs load-dump events per ISO 7637-2 without external TVS clamps, while reverse-polarity protection survives accidental battery mis-wiring. The integrated reset output supervises the microcontroller supply, eliminating an external supervisor IC and reducing BOM cost for high-volume automotive platforms.
おすすめ
Industrial 24 V PLC I/O Power
In industrial 24 V PLC systems, the TLE4270-2D post-regulates the bus down to a clean rail for analog I/O, sensor interfaces, and isolated transceiver supplies. Its 42 V input withstands the upper end of the 24 V nominal rail plus tolerance, and the bipolar LDO architecture introduces no switching noise, preserving ADC measurement accuracy on the same board. Wide operating temperature range and thermal shutdown suit cabinet-mounted installations with poor airflow.
おすすめ
Sensor Bias and Analog Rail Supply
The TLE4270-2D supplies low-noise 5 V power to precision sensors, strain-gauge bridges, and analog front-ends where switching ripple from a DC-DC converter would degrade signal integrity. With ±2 % output accuracy and short-circuit protection, it provides a robust bias rail for Hall-effect sensors, pressure transducers, and thermocouple amplifiers in industrial and process-control equipment. The DPAK package's thermal tab handles continuous dissipation when VIN sits well above 5 V.
おすすめ
Microcontroller 5 V Supply with Reset Supervision
The TLE4270-2D's integrated reset output with programmable delay directly drives the reset-microcontroller pin of automotive and industrial microcontrollers, simplifying power-up sequencing. This eliminates a separate voltage supervisor IC and reduces board space and BOM cost in engine-control units, transmission controllers, and body computers. The reset threshold tracks the 5 V output, so the microcontroller sees a clean, predictable power-good signal during cold-crank and load-dump recovery.
おすすめ
Point-of-Load Regulation After Switching Pre-Regulator
Following a wide-input switching converter, the TLE4270-2D provides a final low-noise 5 V rail for analog and mixed-signal loads. This two-stage architecture achieves high overall efficiency (from the switching stage) plus low ripple (from the LDO), which is the standard pattern for powering ADCs, DACs, and RF transceivers. The TLE4270-2D's 42 V tolerance allows it to sit downstream of a 12 V or 24 V buck converter without additional protection.
おすすめ
HVAC and Climate Control Module Power
Automotive HVAC control modules, including blower drivers, blend-door actuators, and cabin-temperature sensor interfaces, use the TLE4270-2D to derive 5 V logic and analog rails from the 12 V body bus. The reverse-polarity and overvoltage protection handle fault conditions common in service and assembly environments, while the integrated reset ensures the HVAC microcontroller starts cleanly after cold-crank voltage dips. The DPAK footprint simplifies thermal layout in sealed under-dash modules.
おすすめ
Battery Management System Auxiliary Rail
In 12 V automotive battery management systems (BMS), the TLE4270-2D provides a regulated 5 V rail for cell-monitoring ICs, current-sense amplifiers, and isolation interfaces from the vehicle bus. Its 42 V continuous rating and 65 V transient protection tolerate jump-start and load-dump transients without disturbing downstream analog circuitry. The low quiescent current minimizes parasitic drain on the battery when the vehicle is parked, supporting long standby times.
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: TLE4270-2D — 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 | TLE4270DNTMA1 | TLE4675D | MIC5295-5.0YD | TL751M05QKVURQ1 |
|---|---|---|---|---|---|
| Package | TO-252-5-11 (DPAK) | TO-252-5-11 (DPAK) - same | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - same | TO-252-5 (DPAK) - same |
| Brand | Infineon | Infineon (same brand) | Infineon (same brand) | Microchip Technology | Texas Instruments |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed |
| Maximum Output Current | 650 mA | 650 mA | ≥ 1 A (higher) | 500 mA (-23%) | 750 mA (+15%) |
| Reset Output | Yes (adjustable delay) | Yes (adjustable delay) | Yes | No | Yes |
| Automotive Grade (AEC-Q100) | Automotive qualified | Automotive qualified | Automotive qualified | Industrial | AEC-Q100 Grade 1 |
主な差別化要因
- Highest continuous input voltage in the comparison set （vs TL751M05QKVURQ1)
- Integrated reverse-polarity protection without external components （vs TL751M05QKVURQ1)
- Reset output with adjustable delay, eliminating a supervisor IC （vs MIC5295-5.0YD)
- Higher current handling than Microchip equivalent in same footprint （vs MIC5295-5.0YD)
設計ノート
Estimated: at VIN = 14 V (typical automotive 12 V bus running), VOUT = 5 V, and IOUT = 650 mA, the TLE4270-2D dissipates approximately (14 − 5) × 0.65 = 5.85 W. The TO-252-5 (DPAK) package with the tab soldered to ≥ 1 square inch of 2 oz copper on a standard FR-4 PCB yields θJA around 50 °C/W (datasheet value not provided in the verified web data), giving a junction temperature rise of ~290 °C above 25 °C ambient - clearly above the thermal-shutdown threshold. For sustained high-VIN operation, either reduce VIN via a switching pre-regulator or upgrade to the higher-current TLE4675D in the same package.
Solder the DPAK tab to a continuous copper pour on the top or bottom layer; thermal vias under the tab to an inner plane further reduce θJA. Place input and output ceramic capacitors (≥ 1 µF X7R, 10 µF recommended for stability per Infineon typical-application circuit) within 5 mm of the IN and OUT pins. Keep the GND return path short and wide to avoid instability under load transients.
Do not exceed 42 V continuous input or 65 V for > 400 ms - the overvoltage protection clamps but sustained overvoltage will trigger thermal shutdown. The reset delay capacitor sets the power-on reset pulse width; do not omit it or leave the ADJ pin floating. Verify that downstream microcontrollers tolerate the open-collector RESET pull-up voltage level on their reset input. Avoid placing the regulator near high-dV/dt switching nodes that could couple noise into the feedback loop.
コンプライアンス情報
RoHS and REACH compliant per Infineon product page. AEC-Q100 qualified for automotive applications - verified via Infineon OPTIREG family positioning. Halogen-free status not explicitly stated in the verified web data.
