TLE4270-2D - 5V 650mA LDO Regulator, 42V Input | Infineon
N.º da peça: TLE4270-2D ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para TLE4270-2D — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com TLE4270-2D (mesmo formato e footprint) — diferindo em Output Voltage, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TLE4270DNTMA1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE4675D
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MIC5295-5.0YD
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TL751M05QKVURQ1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE4270-2D Classificações máximas e características elétricas
| Tipo de saída | Fixed 5 V |
| Tensão de saída | 5 V |
| Output Voltage Tolerance | ≤ ±2 % |
| Corrente máxima de saída | 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 |
| Encapsulamento | TO-252-5-11 (DPAK, 4 leads + tab) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do TLE4270-2D
| Pino 1 | IN — Input voltage (up to 42 V continuous, 65 V transient ≤ 400 ms) |
| Pino 2 | GND — Ground reference |
| Pino 3 | RESET — Reset output (open-collector, active-low) with adjustable delay |
| Pino 4 | ADJ/RESET DELAY — Reset delay timing capacitor connection |
| Pino 5 | OUT — Regulated 5 V output, up to 650 mA |
| Pino TAB | TAB — Exposed thermal tab, internally connected to GND (must be soldered to copper pour) |
Aplicações típicas
TLE4270-2D é adequado para 7 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TLE4270-2D — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- 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)
Notas de projeto
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.
Informações de conformidade
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.
