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Infineon Technologies TLE4267NKSA1
- Part No.:
- TLE4267NKSA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-220-7 Formed Leads
- Datasheet:
-
TLE4267NKSA1.pdf
- Description:
- IC REG LIN 5V 400MA TO220-7-11
- Quantity:
- Payment:
- Shipping:
Inventory:3,315
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Product details
Overview
TLE4267NKSA1 from Infineon Technologies is a 5-V low-dropout linear voltage regulator in PG-TO220-7-11 package, designed for automotive power supply rails. It delivers ≥400 mA output current with ±2% output voltage tolerance, supports input voltage up to 40 V, and integrates reset generation (VRT = 4.5 V typ), on/off logic (E2/E6 pins), and overtemperature, short-circuit, reverse-polarity, and overvoltage (60 V/400 ms) protection.
For engineers reviewing the TLE4267NKSA1 datasheet, TLE4267NKSA1 pinout, TLE4267NKSA1 application in automotive body control modules or engine management systems, or TLE4267NKSA1 equivalent for AEC-Q100-compliant 5-V regulation with programmable reset delay, this page provides verified functional context, validated pin roles, and real-world design constraints including ESR-sensitive output capacitor requirements (≤3 Ω) and self-holding logic behavior.
Technical Context
The TLE4267NKSA1 uses a bandgap-referenced control amplifier driving a series pass transistor with saturation control to maintain regulation across load and temperature. Its dual-input logic (E2 active-high inhibit, E6 active-low hold) enables ignition-controlled startup and microcontroller-independent self-holding without external latching components.
Reset functionality is implemented via an external capacitor (CD) on pin D: charging occurs above VRT (4.5 V), discharging rapidly below it, with RO (open-collector) asserting low when VCD falls below VLD. The internal 30-kΩ pull-up to Q ensures defined reset state during power-up and fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - Ensures stable MCU/peripheral rail within automotive-grade tolerance bands. |
| Max Output Current | ≥400 mA - Supports multiple downstream ICs (e.g., CAN transceivers, sensors) without external boost. |
| Input Voltage Range | 5.5 V to 40 V - Compatible with 12 V and 24 V automotive battery systems including load-dump transients. |
| Reset Threshold | 4.5 V (typ) - Triggers system reset before critical logic voltage collapse in microcontrollers. |
| Standby Current | <10 μA - Enables ultra-low-power sleep modes in always-on vehicle networks. |
| Overvoltage Protection | 60 V for ≤400 ms - Survives ISO 7637-2 Pulse 5a load-dump events without latch-up or damage. |
| Operating Temperature | −40 °C to +150 °C - Qualified for under-hood deployment per AEC-Q100 Grade 0. |
Pinout & Package
Package: PG-TO220-7-11 (7-pin TO-220 variant with integrated heat sink tab; pin 4 is GND and electrically connected to rear metal tab).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary unregulated input; requires local ceramic bypass to GND to suppress high-frequency noise and line impedance resonance. |
| 2 (E2) | Inhibit | Active-high enable: ≥4.0 V turns regulator on; internal 100-kΩ pull-down ensures default OFF at power-up. |
| 3 (RO) | Reset Output | Open-collector output pulled internally to Q via 30-kΩ resistor; sinks current when VQ < VRT to signal MCU reset. |
| 4 (GND) | Ground | Power and signal reference; electrically tied to rear metal tab for thermal conduction and EMI shielding. |
| 5 (D) | Reset Delay | Connects to external capacitor to set reset timeout; charge/discharge current ID sets delay range from milliseconds to seconds. |
| 6 (E6) | Hold | Active-low hold: pulls low to maintain ON state even after E2 deactivates-enables self-holding without external circuitry. |
| 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 |
|---|---|
| Self-holding logic | E6 pin enables latched ON state without external components-reduces BOM count and PCB area in body control units. |
| Programmable reset delay | External capacitor on pin D sets delay from ~10 ms to >1 s-supports flexible power sequencing in multi-rail ECUs. |
| Integrated protection suite | Single-chip coverage of overtemperature, short-circuit, reverse polarity, and 60-V/400-ms overvoltage-eliminates need for discrete protection devices. |
| AEC-Q100 qualified | Grade 0 (−40 °C to +150 °C junction) qualification confirmed-validates suitability for engine bay and transmission control applications. |
| Green product | RoHS-compliant, lead-free, halogen-free packaging-meets global automotive environmental compliance mandates. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Auxiliary Rail |
|---|---|
Use Scenario: Powering LIN transceivers, door lock actuators, and interior lighting drivers from a switched 12 V bus. IC Role / Device Role / Timing Role: Primary 5-V LDO supplying regulated power and generating synchronized reset for microcontroller wake-up after ignition key turn-on. Use Value: Self-holding logic maintains 5-V rail during brief ignition interruptions (e.g., start-stop cycles), preventing unintended MCU resets. | Use Scenario: Providing isolated 5-V supply to crankshaft position sensor interface and knock control circuitry. IC Role / Device Role / Timing Role: Secondary regulated rail with fast-reset capability triggered by battery undervoltage during cranking. Use Value: Reset threshold of 4.5 V ensures deterministic shutdown before analog front-end ADCs lose accuracy under 9-V cranking dips. |
| Transmission Control Module (TCM) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
Use Scenario: Supplying 5-V power to solenoid drivers and gear position sensors in harsh under-transmission environments. IC Role / Device Role / Timing Role: High-temp-stable LDO with integrated reverse-polarity and short-circuit protection for fault-tolerant operation. Use Value: 150 °C junction rating and 60-V transient tolerance allow direct mounting near transmission housing without heatsink derating. | Use Scenario: Regulating power for image signal processor (ISP) and MIPI interface in rear-view camera modules. IC Role / Device Role / Timing Role: Low-noise, EMI-hardened 5-V source with controlled startup timing via programmable reset delay. Use Value: External capacitor on pin D delays ISP reset until power rail settles, eliminating frame corruption during camera boot. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 5-V automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 300 mA max output, no reset output or hold logic; SOT-23-5 package; 1.8–5.5 V input range. | Lacks automotive qualification, reset signaling, and self-holding-suitable only for non-safety infotainment peripherals. | Select only for cost-sensitive, low-current, non-AEC applications where external reset logic is acceptable. |
| MC78T05BDTRKG | Fixed 5-V output, 1.5 A rating, no enable/reset pins; TO-263-3 package; no AEC-Q100 qualification. | Higher current but no programmable logic or protection features-requires external circuits for ignition control and reset. | Choose only if raw current headroom outweighs integration needs and automotive compliance is not required. |
Compared with TLV73350PDBVR and MC78T05BDTRKG, the TLE4267NKSA1 uniquely combines AEC-Q100 Grade 0 operation, integrated self-holding logic, open-collector reset output, and 60-V transient protection-making it irreplaceable for safety-critical, ignition-managed automotive power domains where component count, reliability, and qualification are mandatory.
Availability
TLE4267NKSA1 is available at Aetrix Electronics and suitable for body control modules, engine management systems, and transmission control units requiring stable component supply with full automotive qualification and long-term lifecycle support.
Supply support for TLE4267NKSA1 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, and industrial control ICs, with leadership in AEC-Q100-qualified analog and mixed-signal solutions.
The TLE4267NKSA1 belongs to Infineon's TLE automotive linear regulator family, engineered specifically for robust, feature-rich 5-V power delivery in engine bay and chassis control units where reliability under extreme thermal and electrical stress is non-negotiable.
FAQ
What is the minimum input voltage required for regulation?
The TLE4267NKSA1 requires VI > 5.5 V to maintain 5.0 V output regulation. Below this threshold, dropout behavior begins and output voltage drops linearly with input. This ensures compatibility with nominal 12 V systems during cold-crank events down to ~6.5 V battery voltage while retaining regulation margin.
How does the self-holding function operate without external components?
When E6 is pulled low (active), the device remains ON even after E2 returns to low-leveraging internal biasing and feedback to sustain conduction. This eliminates need for external SCR or latch circuits in ignition-switched systems, reducing failure points and board space in compact ECUs.
Can the reset delay be disabled or set to zero?
No. The reset delay is inherently enabled via pin D; omitting the external capacitor disables reset functionality entirely (RO remains high). Minimum practical delay is ~10 ms using 10 nF; true instantaneous reset is not supported due to internal charge/discharge current limits and noise immunity design.
Is the GND pin (pin 4) electrically connected to the TO-220 tab?
Yes-pin 4 (GND) is internally bonded to the rear metal tab in the PG-TO220-7-11 package. This provides both low-inductance grounding and thermal conduction path; mounting the tab to a heatsink or ground plane improves thermal resistance by up to 15 °C/W and reduces EMI coupling.
TLE4267NKSA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-220-7 Formed Leads
- 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:
- P-TO220-7-11
TLE4267NKSA1 FAQ
1.How can I place an order for TLE4267NKSA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4267NKSA1 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 TLE4267NKSA1 reliable?
The price and inventory of TLE4267NKSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4267NKSA1 is usually 5 days.
3.What payment methods are accepted for TLE4267NKSA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4267NKSA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4267NKSA1?
TLE4267NKSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4267NKSA1 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 TLE4267NKSA1?
For technical support, including TLE4267NKSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4267NKSA1 requirements.
6.How does Aetrix verify that TLE4267NKSA1 is sourced from the original manufacturer or authorized distributors?
All TLE4267NKSA1 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 TLE4267NKSA1 meets industry standards.
7.What is the process for return or replacement of TLE4267NKSA1?
All TLE4267NKSA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4267NKSA1, 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 TLE4267NKSA1 part is unused and in its original packaging.
Return procedure for TLE4267NKSA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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