TLE4270-2G - 5V 650mA LDO Regulator 42V | Infineon
N.º da peça: TLE4270-2G ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.5 | $25,00 |
| 100 | $2.05 | $205,00 |
| 500 | $1.72 | $860,00 |
| 1.000 | $1.45 | $1.450,00 |
TLE4270-2G Visão geral
An LDO (Low-Dropout) linear regulator is a member of the linear regulator family, which in turn belongs to the broader category of voltage regulators inside power management ICs (PMICs). Unlike switching converters, an LDO dissipates VIN−VOUT as heat and adds no switching noise to the output, which makes it preferable for low-noise analog rails where a small dropout is acceptable. The TLE4270-2G sits at the high-input-voltage end of the LDO hierarchy, designed specifically for automotive 12 V/24 V bus environments that can see load-dump transients of 65 V.
Key features include ≤ ±2% output tolerance across the operating range, 650 mA continuous output current capability, integrated short-circuit and overvoltage protection, thermal shutdown with hysteresis, low quiescent current suitable for always-on standby rails, and a wide operating temperature range qualified for automotive use. The TO-263-5 package with an exposed power tab provides low thermal resistance suitable for surface-mount PCB layouts without an external heatsink at moderate dissipation.
The regulator uses a PNP-Darlington pass architecture with on-chip trimming to achieve ±2% output accuracy, current foldback limiting, and an internal reference stabilized across temperature. Its 42 V continuous / 65 V transient rating is specifically tailored to absorb ISO 7637-style automotive transients, simplifying the upstream protection network on 12 V and 24 V boards.
Typical applications include automotive body and chassis ECUs, 24 V industrial sensor supplies, CAN/LIN transceiver rails, and always-on standby rails in battery-powered systems. In all of these, the TLE4270-2G replaces discrete series-pass designs with a single, protected IC.
When designing with this part, place input and output ceramic capacitors as close to the IC pins as possible and observe the thermal resistance of the TO-263 tab. Designers should also consider the TLE4270-2D (TO-252) variant when a smaller footprint is acceptable, or TLE7270-2G when an enhanced ESD/EMC profile is needed.
This page consolidates distributor stock data, parametric drop-in alternatives, and PCB design guidance not found in a quick datasheet scan, helping engineers select and qualify the TLE4270-2G faster.
Alternativas drop-in para TLE4270-2G — 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 TLE4270-2G (mesmo formato e footprint) — diferindo em Output Voltage, Package.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TLE4270-2D
✅ Drop-In✓ Em estoque
$0.89 / unidade
Ver ficha técnica →TLE4270G
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE7270-2G
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE4675G
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TPS7A6050QKTTRQ1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE72702GATMA1
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TLE4270-2G Classificações máximas e características elétricas
| Tipo de saída | Fixed 5 V |
| Tensão de saída | 5 V (nominal, ±2% tolerance) |
| Corrente máxima de saída | 650 mA |
| Input Voltage Range (continuous) | up to 42 V |
| Input Voltage (transient ≤ 400 ms) | up to 65 V |
| Regulation Accuracy Band | ±2% up to 26 V input at 650 mA |
| Short-Circuit Current Limit | > 650 mA (current foldback) |
| Protection Features | Short-circuit, overvoltage, thermal shutdown |
| Faixa de temperatura de operação | -40 C to +125 C (automotive grade) |
| Encapsulamento | TO-263-5 (PG-TO263-5-1) with exposed tab |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
| Automotive Qualification | AEC-Q100 suitable (automotive grade) |
Configuração de pinos do TLE4270-2G
| Pino 1 | IN — Input voltage (up to 42 V continuous / 65 V transient) |
| Pino 2 | GND — Ground |
| Pino 3 | OUT — Regulated 5 V output, up to 650 mA |
| Pino 4 | N/C — Not connected (variant-dependent, refer to datasheet) |
| Pino 5 | TAB — Exposed thermal tab (electrically tied to GND/OUT per datasheet) |
Aplicações típicas
TLE4270-2G é adequado para 6 aplicaçãos: Automotive Body and Chassis ECU Rails, CAN/LIN Transceiver Standby Rails, 24 V Industrial Sensor Supplies, Battery-Powered Always-On Standby Rails, Truck and Agricultural 24 V Vehicle Systems, Harsh-Environment Industrial PLCs.
Automotive Body and Chassis ECU Rails
The TLE4270-2G is a textbook fit for body and chassis ECUs that draw power from the 12 V or 24 V automotive bus. Its 42 V continuous / 65 V transient (≤ 400 ms) input rating directly absorbs ISO 7637 load-dump pulses without an external TVS clamp, while the ±2% regulation accuracy across -40 C to +125 C keeps MCU and sensor rails stable. The TO-263-5 exposed tab provides a low thermal resistance path so designers can drop 650 mA continuous into the load without an external heatsink. Compared to a discrete series-pass design, the TLE4270-2G folds short-circuit, overvoltage, and thermal protection into a single 5-pin IC, shrinking the BOM and improving reliability.
Recomendado
CAN/LIN Transceiver Standby Rails
CAN and LIN transceivers in modern vehicles require a clean 5 V rail that remains alive during ignition-off for wake-up signalling. The TLE4270-2G's low quiescent current and absence of an enable pin make it a natural fit for these always-on rails, since the output is present whenever the input bus voltage exceeds the dropout threshold. Its 650 mA capability is more than adequate to feed a CAN transceiver plus local logic, and the ±2% regulation prevents false wake-ups from a sagging rail. Compared to a switching pre-regulator, the LDO adds zero switching noise to the CAN bus supply, which keeps EMI margins intact.
Recomendado
24 V Industrial Sensor Supplies
Industrial 24 V sensor buses and PLC I/O cards routinely need a 5 V rail to power microcontrollers and digital isolators. The TLE4270-2G accepts the full 24 V nominal plus the voltage transients common in factory environments, and regulates to 5 V at up to 650 mA without a switching converter. With ±2% output accuracy and short-circuit foldback limiting, it tolerates capacitive loads and accidental shorts at the connector without latch-up. Compared to a TO-220 linear regulator on a heatsink, the surface-mount TO-263-5 package cuts assembly cost and supports reflow soldering.
Recomendado
Battery-Powered Always-On Standby Rails
In battery-backed systems, the TLE4270-2G can provide a 5 V rail directly from a 12 V lead-acid battery, surviving cold-crank dips and load-dump spikes without external protection. Its wide input range and integrated thermal shutdown make it robust against the unpredictable transients of a vehicle battery, while ±2% regulation holds the rail stable for RTC, SRAM, and microcontroller wake-up logic. Compared to a buck converter plus LDO cascade, this single-IC solution reduces quiescent loss and component count, extending standby battery life.
Recomendado
Truck and Agricultural 24 V Vehicle Systems
Trucks, buses, and agricultural machinery use a 24 V nominal bus with high transient voltages that easily destroy commodity LDOs. The TLE4270-2G's 42 V continuous and 65 V surge ratings are designed exactly for this environment, allowing it to feed 5 V rails for cab electronics, telematics, and sensor clusters without complex upstream protection. The exposed TO-263-5 tab provides sufficient thermal dissipation for sustained 650 mA loads, and AEC-Q100 qualification confirms reliability under hood thermal and vibration stress.
Recomendado
Harsh-Environment Industrial PLCs
Industrial PLCs and distributed I/O nodes often operate in cabinets where ambient temperature reaches +85 C. The TLE4270-2G's -40 C to +125 C operating range and thermal shutdown with hysteresis give it ample margin to ride out sustained overloads without latching off, while the ±2% regulation accuracy keeps analog front-end rails within calibration limits. Compared to a TO-220 regulator that requires a clip-on heatsink and through-hole mounting, the surface-mount TO-263-5 package simplifies automated assembly and improves long-term thermal cycling reliability.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TLE4270-2G — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | TLE4270-2D | TLE4270G | TLE7270-2G | TLE4675G | TLE72702GATMA1 | TPS7A6050QKTTRQ1 |
|---|---|---|---|---|---|---|---|
| Brand | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Texas Instruments |
| Package | TO-263-5 (PG-TO263-5-1) | TO-252-5 (PG-TO252-5) | TO-263-5 (PG-TO263-5-1) - same | TO-263-5 (PG-TO263-5-1) - same | TO-263-5 (PG-TO263-5-1) - same | TO-263-5 (PG-TO263-5-1) - same | TO-263-5 (DDPAK/TO-263) |
| Output Voltage | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed | 5 V fixed (family) | 5 V fixed | 5 V fixed |
| Automotive Qualification (AEC-Q100) | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Principais diferenciais
- 65 V transient input rating (vs TPS7A6050QKTTRQ1)
- Exposed TO-263-5 tab for heatsink-free 650 mA (vs TLE4270-2D (TO-252-5))
- Infineon OPTIREG automotive pedigree (vs TLE4270G (legacy Siemens second-source))
Notas de projeto
Estimated: at VIN=24 V, VOUT=5 V, and 650 mA continuous load, the TLE4270-2G dissipates roughly 12.4 W. The TO-263-5 exposed tab provides the primary thermal path; per the Infineon datasheet the tab must be soldered to a minimum 1 square inch copper pour on the PCB to keep the junction within the 125 C rating. For sustained loads above 400 mA, expand the copper pour or add thermal vias to inner planes.
Place the input and output ceramic capacitors as close as possible to the IN and OUT pins to minimize parasitic inductance that can cause instability on the regulation loop. Use a 10 uF X7R ceramic on the input and a 10 uF X7R ceramic on the output, with a 0.1 uF ceramic bypass in parallel. Keep the high-current ground return path wide and short, and tie the exposed tab to the same ground pour.
Do not exceed the 42 V continuous / 65 V transient input rating; place an external TVS clamp upstream if the source can produce transients beyond 65 V. Avoid using electrolytic capacitors on the output, which add ESR and can degrade loop stability - prefer low-ESR ceramics. Do not load the tab with mechanical stress, as it is the primary thermal and electrical path. Refer to the Infineon OPTIREG datasheet for the recommended capacitor ESR range.
Informações de conformidade
AEC-Q100 qualified per Infineon OPTIREG datasheet family specifications. RoHS and REACH compliant per product page. Halogen-free status not explicitly stated in the verified data - set to unknown.
