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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLE4287G

Name: TLE4287G
Brand: Infineon Technologies
SKU: TLE4287G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4287G

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TLE4287G.pdf

Description:: IC REG LINEAR FIXED STNDRD REG

Quantity:: RFQ Add To RFQ list

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Inventory:22,500

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Product details

Overview

TLE4287G from Infineon Technologies is a monolithic 5-V automotive voltage regulator in PG-DSO-14 package, delivering ≥250 mA output current with ±2% output voltage tolerance, input voltage range of 7.5–42 V, and integrated reset generator with adjustable delay. It serves as primary power supply for microcontrollers and safety-critical ECUs in engine control units.

For engineers reviewing the TLE4287G datasheet, TLE4287G pinout, TLE4287G application, or TLE4287G equivalent, key selection criteria include its AEC-Q100 qualification, self-holding logic (EN/H dual-control), reverse polarity protection, overtemperature shutdown, and reset threshold at 4.5 V with external capacitor programmability.

Technical Context

The TLE4287G implements a bandgap-referenced control amplifier driving a series pass transistor, regulating output to 5.0 V ±2% across 7.5–42 V input and -40 °C to +150 °C junction temperature. Its reset generator uses an input-voltage-independent reference compared against a scaled output voltage.

Turn-on/turn-off logic combines EN (active-high enable) and H (active-low hold) pins to support ignition-controlled startup and controller-maintained self-holding without external latching components. Reset delay time is set by external capacitor on pin 8, with upper/lower timing thresholds at 2.2–3.6 V and 0.1–0.8 V respectively.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2% (4.90–5.10 V); ensures stable MCU core supply under load and temperature variation
Max Output Current	250 mA; supports mid-power automotive sensors and interface ICs without external boost
Input Voltage Range	7.5–42 V; accommodates cold-crank (≥4.5 V post-dropout) and load-dump transients up to 42 V
Reset Threshold	4.50–4.80 V; triggers system reset before MCU brown-out, with hysteresis via internal timing thresholds
Standby Current	≤10 μA (OFF state); enables ultra-low-power sleep mode in always-on vehicle networks
Thermal Protection	Active shutdown at T_j ≥150 °C; prevents thermal runaway during sustained overload or poor PCB heatsinking
Package	PG-DSO-14 (RoHS-compliant); surface-mount SOIC variant with 7 GND pins for low-inductance grounding and EMI suppression

Pinout & Package

PG-DSO-14 package: 14-pin thermally enhanced SOIC with exposed thermal pad (pin 4 used for thermal measurement), 7 dedicated GND terminals (pins 3,4,5,10,11,12,14) for low-impedance return paths.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input supply	Primary VIN connection; requires local ceramic decoupling to ground to suppress line transients
2 (N.C.)	No connect	Internally unconnected; must remain floating, not tied to any net
3,4,5,10,11,12,14 (GND)	Ground reference	Seven independent GND pins minimize ground bounce and improve PSRR in noisy automotive environments
6 (EN)	Enable control	Active-high logic input (≥4 V); internal 100 kΩ pull-down enables default OFF state at power-up
7 (RO)	Reset open-collector output	Drives LOW when V_Q < 4.5 V; internal 30 kΩ pull-up to V_Q eliminates external resistor need
8 (D)	Reset delay capacitor node	Connects to GND via external capacitor (e.g., 100 nF → ~100 ms delay); sets reset timeout independently of supply
9 (H)	Hold/release control	Active-low latching input; when LOW, maintains regulator ON even after EN goes LOW (self-hold mode)
13 (Q)	Regulated 5-V output	Delivers ≥250 mA; requires ≥100 nF ceramic capacitor to GND for loop stability across full temp range

Key Features

Feature	Design Value
Self-holding logic (EN + H)	Eliminates external latch circuitry; enables ignition-triggered startup and controller-sustained operation without added components
Adjustable reset delay	External capacitor on pin 8 sets delay from milliseconds to seconds, enabling precise power sequencing in multi-rail systems
Reverse polarity protection	Withstands -0.5 V to -42 V input without damage, critical for battery terminal reversal during service
Short-circuit proof output	Internal current limiting prevents failure during output short to GND or battery, supporting robust field deployment
AEC-Q100 qualified	Rated for Grade 0 (-40 °C to +150 °C), validated for permanent installation in engine compartments and transmission control modules

Applications

Engine Control Unit (ECU)

Transmission Control Module (TCM)

Use Scenario: Powers 32-bit MCU, CAN transceivers, and analog front-ends in gasoline/diesel engine management systems.

IC Role / Device Role / Timing Role: Primary 5-V rail regulator with integrated reset signaling for safe boot and fault recovery.

Use Value: Self-holding logic sustains power during ignition cycling; reset delay prevents spurious restarts during cranking transients.

Use Scenario: Supplies 5-V logic and sensor interfaces in automatic transmission controllers exposed to high under-hood temperatures.

IC Role / Device Role / Timing Role: High-temp-stable voltage source with thermal shutdown and reverse-polarity resilience.

Use Value: 150 °C junction rating and 7-GND-pin layout ensure reliability in confined, poorly ventilated TCM enclosures.

Body Control Module (BCM)

Advanced Driver Assistance System (ADAS) Power Hub

Use Scenario: Provides regulated 5-V supply to door module MCUs, LIN transceivers, and window motor drivers.

IC Role / Device Role / Timing Role: Always-on regulator with <10 μA standby current and programmable reset for wake-from-sleep sequences.

Use Value: Ultra-low quiescent current extends battery life in parked vehicle modes; reset delay aligns with microcontroller wake latency.

Use Scenario: Serves as secondary 5-V source in radar/EPS fusion controllers requiring clean, sequenced power rails.

IC Role / Device Role / Timing Role: Regulator with precise 4.5 V reset threshold and PSRR >55 dB at 100 Hz for noise-sensitive analog signal chains.

Use Value: High PSRR and low-output-capacitor requirement (≥100 nF) simplify layout near RF sections while maintaining stability.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5-V automotive regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV70750PDRVR	Lower IQ (250 nA), lower max current (300 mA), no reset function, SOT-563 package	Lacks reset generation and self-hold logic; suited for non-safety-critical always-on nodes only	Select only if reset signaling is handled externally and thermal derating below 125 °C is acceptable
MAX16910ATA+T	Includes watchdog timer, higher PSRR (70 dB), 40 V max input, TDFN-EP package	Requires external reset capacitor; lacks dual-control (EN/H) self-hold architecture	Prefer when system-level watchdog supervision is needed and board space constraints favor smaller footprint

Compared with TLV70750PDRVR and MAX16910ATA+T, the TLE4287G uniquely integrates EN/H latching, 7-GND-pin DSO-14 thermal performance, and AEC-Q100 Grade 0 rating-making it the only choice for engine bay–mounted regulators requiring autonomous reset and cranking resilience.

Availability

TLE4287G is available at Aetrix Electronics and suitable for engine control units, transmission control modules, body control modules, and ADAS power hubs requiring stable component supply across extended automotive lifecycles.

Supply support for TLE4287G includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive ICs, and security solutions, with global manufacturing and automotive qualification infrastructure.

The TLE4287G belongs to Infineon's TLE automotive linear regulator family, designed specifically for demanding power-supply roles in engine, transmission, and chassis control systems where functional safety and long-term reliability are mandatory.

FAQ

What is the minimum input voltage required for regulation?

The TLE4287G requires a minimum input voltage of 7.5 V to maintain 5.0 V output regulation, as specified in Table 4. Below this, dropout behavior occurs - output drops linearly with input. This threshold ensures sufficient headroom for the internal series pass transistor and control amplifier to operate within specification across temperature and load.

How does the self-holding function work with EN and H pins?

When EN is driven HIGH (>4 V) and H is pulled LOW, the device enters self-hold mode: it remains ON even after EN returns LOW. Pin 9 (H) must be actively held LOW by the controller (e.g., MCU GPIO) to sustain conduction. Releasing H (letting it float or pulling HIGH) disables the regulator, dropping V_Q to 0 V with <10 μA quiescent current.

Can the reset delay time be adjusted without external components?

No - reset delay is set exclusively by an external capacitor connected between pin 8 (D) and GND. The internal timing circuit charges/discharges this capacitor between 0.1–0.8 V (lower threshold) and 2.2–3.6 V (upper threshold). No resistor or other passive is required; delay scales linearly with capacitance value (e.g., 47 nF ≈ 50 ms, 220 nF ≈ 230 ms).

Is the TLE4287G compatible with 12-V and 24-V vehicle electrical systems?

Yes - the TLE4287G operates across 7.5–42 V input, covering nominal 12-V (e.g., 13.5–14.4 V running, 6–9 V cranking) and 24-V (e.g., 27–28.8 V running, 12–18 V cranking) systems. Its 42-V absolute maximum rating withstands ISO 7637-2 pulse 5a (load dump), making it suitable for both passenger car and commercial vehicle applications.

TLE4287G Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Bulk

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 42V

Voltage - Output (Min/Fixed):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 2.5V @ 200mA

Current - Output:: 250mA

Current - Quiescent (Iq):: 5 mA

Current - Supply (Max):: -

PSRR:: 55dB (100Hz)

Control Features:: Enable, Hold, Reset

Protection Features:: Antisaturation, Over Temperature, Reverse Polarity, Short Circuit

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: PG-DSO-14

TLE4287G FAQ

1.How can I place an order for TLE4287G through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4287G on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLE4287G reliable?

The price and inventory of TLE4287G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4287G is usually 5 days.

3.What payment methods are accepted for TLE4287G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4287G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4287G?

TLE4287G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4287G order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLE4287G?

For technical support, including TLE4287G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4287G requirements.

6.How does Aetrix verify that TLE4287G is sourced from the original manufacturer or authorized distributors?

All TLE4287G products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLE4287G meets industry standards.

7.What is the process for return or replacement of TLE4287G?

All TLE4287G units undergo pre-shipment inspection (PSI). If there is an issue with TLE4287G, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLE4287G part is unused and in its original packaging.

Return procedure for TLE4287G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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