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Infineon Technologies TLE4267SNKSA1
- Part No.:
- TLE4267SNKSA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-220-7
- Datasheet:
-
TLE4267SNKSA1.pdf
- Description:
- IC REG LIN 5V 400MA TO220-7-12
- Quantity:
- Payment:
- Shipping:
Inventory:2,271
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Product details
Overview
TLE4267SNKSA1 from Infineon Technologies is a 5-V automotive-grade low-dropout linear voltage regulator in PG-TO220-7-11 package, delivering ≥400 mA output current with ±2% output voltage tolerance, input voltage range 5.5–40 V, and integrated reset function triggered at 4.5 V (typ). It serves as primary power supply for ECUs, body control modules, and sensor interfaces requiring stable 5-V rail under harsh automotive conditions.
For engineers reviewing the TLE4267SNKSA1 datasheet, TLE4267SNKSA1 pinout, TLE4267SNKSA1 application, or TLE4267SNKSA1 equivalent, key selection criteria include its dual logic-controlled enable/hold inputs (E2/E6), open-collector reset output (RO), adjustable reset delay via external capacitor on pin D, reverse polarity protection, and AEC-Q100 qualification for under-hood use.
Technical Context
The TLE4267SNKSA1 implements a bandgap-referenced control amplifier driving a series pass transistor with saturation control to prevent over-saturation across load currents up to 400 mA. Its reset generator uses an internal current source (ID) to charge an external capacitor on pin D, enabling programmable delay before RO assertion when VQ falls below 4.5 V.
Turn-on/off logic combines active-high inhibit (E2) and active-low hold (E6) to support self-holding operation without external latching components - E6 clamped low maintains regulation even after E2 returns low, enabling ignition-independent runtime in body electronics and gateway modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - ensures compatibility with 5-V microcontrollers and CAN transceivers without external trimming. |
| Max Output Current | ≥400 mA - sufficient to power multiple downstream ICs (e.g., MCU + CAN PHY + sensor interface) from single regulator. |
| Input Voltage Range | 5.5 V to 40 V - supports 12-V and 24-V automotive battery systems including cold-crank (5.5 V) and load-dump (40 V). |
| Reset Threshold | 4.5 V (typ) - triggers system reset before MCU brown-out, with external capacitor on pin D setting delay from µs to seconds. |
| Standby Current | <10 µA - enables ultra-low-power sleep mode in always-on vehicle networks (e.g., LIN wake-up receivers). |
| Protection Features | Overtemperature, short-circuit, reverse polarity, overvoltage (60 V/400 ms), ESD (2 kV HBM) - eliminates need for external protection circuitry. |
| Operating Temp | −40 °C to +150 °C - qualified for engine bay and transmission control unit mounting locations. |
Pinout & Package
Package: PG-TO220-7-11 - thermally enhanced through-hole package with exposed rear-side GND tab for direct heatsink mounting; pin 4 is electrically connected to the tab and must be tied to system ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary DC input connection; requires local 100-nF ceramic capacitor directly to GND (pin 4) for stability. |
| 2 (E2) | Inhibit | Active-high enable: ≥4.0 V turns regulator ON; internal 100-kΩ pull-down ensures safe default-OFF state. |
| 3 (RO) | Reset Output | Open-collector output pulled high via internal 30-kΩ resistor to Q; asserts low when VQ < 4.5 V after programmed delay. |
| 4 (GND) | Ground | Power and signal reference; electrically tied to metal tab - must be soldered to PCB ground plane for thermal and electrical integrity. |
| 5 (D) | Reset Delay | Connects to external timing capacitor to GND; sets reset assertion delay by controlling charge rate of internal current source ID. |
| 6 (E6) | Hold | Active-low latch control: pulled low by microcontroller to maintain ON state even after E2 deactivates - enables self-hold without external components. |
| 7 (Q) | 5-V Output | Regulated output; requires ≥22-μF output capacitor with ESR ≤3 Ω for loop stability across −40 °C to +150 °C. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Reset Delay | Programmable via external capacitor on pin D - supports delay ranges from milliseconds to seconds for coordinated system power sequencing. |
| Self-Holding Logic | E2/E6 dual-input control allows microcontroller to assert E6 low and release E2, maintaining regulation without continuous ignition signal - reduces wiring complexity in body domain ECUs. |
| Reverse Polarity Protection | Withstands −42 V input - eliminates need for external series diode in battery-connected applications, improving efficiency and thermal margin. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40 °C to +125 °C ambient) and extended junction temperature (150 °C) - validated for automotive safety-critical power rails. |
| Green Product | RoHS-compliant, lead-free, halogen-free - meets EU ELV and OEM environmental requirements for vehicle production. |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Core Rail |
|---|---|
Use Scenario: Powers 5-V microcontroller, CAN transceiver, and analog sensor front-end in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary LDO supplying regulated 5-V rail; reset output (RO) feeds MCU's NMI or reset pin to enforce safe shutdown during undervoltage events. Use Value: Withstands 40-V load dump and −42-V reverse battery; self-hold logic enables post-ignition diagnostics without re-enabling E2. | Use Scenario: Supplies 5-V logic for door module microcontrollers, window lift drivers, and LIN transceivers in centralized body electronics. IC Role / Device Role / Timing Role: Centralized power source with programmable reset delay - coordinates power-down sequence across multiple sub-modules during vehicle sleep entry. Use Value: E6 hold function allows BCM to remain active after ignition-off for 30+ seconds (via capacitor timing), enabling delayed window closure or anti-pinch memory retention. |
| Automotive Gateway Node | Transmission Control Unit (TCU) Interface Rail |
Use Scenario: Provides isolated 5-V supply for gateway MCU and multi-protocol transceivers (CAN FD, LIN, Ethernet PHY side-rail). IC Role / Device Role / Timing Role: Secondary regulator fed from main 12-V rail; RO output signals gateway health status to central domain controller. Use Value: 400-mA output supports concurrent operation of two CAN FD controllers and one LIN PHY; reverse polarity protection avoids field failures due to battery misconnection. | Use Scenario: Powers 5-V interface circuitry between TCU MCU and solenoid driver ICs or position sensors in automatic transmission assemblies. IC Role / Device Role / Timing Role: Local LDO with precise 5-V output and fast reset response - ensures deterministic sensor sampling during gear-shift transients. Use Value: ±2% output tolerance maintains ADC reference accuracy; short-circuit proofing prevents latch-up during solenoid coil fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 5-V automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300-mA output, no reset output, no E2/E6 logic, SOT-23-5 package | Lacks self-hold and programmable reset - suitable only for simple always-on 5-V loads without sequencing or fault signaling | Select only if space-constrained and reset/control logic is handled externally by MCU. |
| MAX1725EUT+T | 250-mA output, fixed 5-V, no hold logic, SOT-23-5, no reverse polarity protection | No reverse-battery tolerance or self-hold capability - requires external diode and latch circuit for automotive use | Not recommended for direct replacement; limited to non-critical interior modules with protected power distribution. |
Compared with TLV73350PDBVR and MAX1725EUT+T, TLE4267SNKSA1 uniquely integrates automotive-grade protections (reverse polarity, 60-V load dump), dual-control logic for self-hold, and programmable reset - making it the only option among the three qualified for under-hood ECU and TCU core power rails.
Availability
TLE4267SNKSA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, and automotive gateways requiring stable component supply under AEC-Q100 compliance, extended temperature operation, and long-term automotive lifecycle support.
Supply support for TLE4267SNKSA1 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 industrial control solutions, with global R&D and manufacturing infrastructure.
The TLE4267 belongs to Infineon's TLE automotive linear regulator product line, designed specifically for robust, fault-tolerant power supply in engine, transmission, and chassis control systems where reliability under extreme electrical stress is mandatory.
FAQ
What is the minimum input voltage required for regulation?
The TLE4267SNKSA1 requires a minimum input voltage of 5.5 V to maintain 5.0 V output regulation. Below this threshold, the device enters dropout and output voltage drops linearly with input. This specification ensures compatibility with automotive cold-crank conditions where battery voltage may dip to 5.5 V while cranking.
How is the reset delay time calculated from the external capacitor value?
Reset delay tD ≈ CD × 1.2 V / ID, where ID is the internal constant-current source (~1.2 µA typical). For example, a 10-µF capacitor yields ~10 s delay. The exact relationship is confirmed in Figure 6 of the Rev. 2.51 datasheet, and capacitor tolerance directly impacts timing accuracy.
Can pin E6 be left unconnected in applications without self-hold functionality?
No - pin E6 has an internal 50-kΩ pull-up to output voltage (Q). Leaving it floating risks unintended self-hold activation due to noise or leakage. If not used, tie E6 directly to Q (5 V) to force inactive state, or connect to a controlled GPIO configured as open-drain low when needed.
Is thermal derating required when operating above 100 °C ambient?
Yes - the PG-TO220-7-11 package requires thermal derating above 100 °C ambient. At 125 °C ambient with 20 K/W heatsink, max continuous output current drops to ~250 mA. Derating curves are provided in Figure 9 of the datasheet; forced-air cooling or copper pour area ≥10 cm² is recommended for full 400-mA operation at 150 °C junction.
TLE4267SNKSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-220-7
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 400mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 4 mA
- Current - Supply (Max):
- 80 mA
- PSRR:
- 54dB (100Hz)
- Control Features:
- Inhibit, Reset
- Protection Features:
- Over Temperature, Over Voltage, Reverse Polarity, Short Circuit, Transient Voltage
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Through Hole
- Supplier Device Package:
- PG-TO220-7-12
TLE4267SNKSA1 FAQ
1.How can I place an order for TLE4267SNKSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4267SNKSA1 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 TLE4267SNKSA1 reliable?
The price and inventory of TLE4267SNKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4267SNKSA1 is usually 5 days.
3.What payment methods are accepted for TLE4267SNKSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4267SNKSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4267SNKSA1?
TLE4267SNKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4267SNKSA1 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 TLE4267SNKSA1?
For technical support, including TLE4267SNKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4267SNKSA1 requirements.
6.How does Aetrix verify that TLE4267SNKSA1 is sourced from the original manufacturer or authorized distributors?
All TLE4267SNKSA1 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 TLE4267SNKSA1 meets industry standards.
7.What is the process for return or replacement of TLE4267SNKSA1?
All TLE4267SNKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4267SNKSA1, 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 TLE4267SNKSA1 part is unused and in its original packaging.
Return procedure for TLE4267SNKSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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