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Infineon Technologies TLE7276D
- Part No.:
- TLE7276D
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLE7276D.pdf
- Description:
- IC REG LIN 5V 300MA TO252-5-11
- Quantity:
- Payment:
- Shipping:
Inventory:2,789
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Product details
Overview
TLE7276D from Infineon Technologies is a monolithic 5 V ±2% fixed-output low-drop linear voltage regulator for automotive load currents up to 300 mA, featuring ultra-low quiescent current (20 μA typ.), inhibit control input, short-circuit protection, and operation with ceramic output capacitors as low as 470 nF. It regulates input voltages from 5.5 V to 42 V and is qualified for under-hood automotive environments.
For engineers reviewing the TLE7276D datasheet, TLE7276D pinout, TLE7276D application, or TLE7276D equivalent, key selection considerations include its 250 mV typical drop voltage at 200 mA, thermal shutdown behavior, inhibit logic thresholds (VINH_ON = 3.1 V), reverse-current sink capability (VQ ≤ 5.5 V), and compatibility with ceramic output caps in space-constrained ECUs.
Technical Context
The TLE7276D integrates a charge pump-based bandgap reference and internal overtemperature shutdown circuitry, enabling stable regulation across −40 °C to +150 °C junction temperature. Its inhibit input features an integrated pull-down resistor and supports active-low disable with <1 μA leakage in shutdown mode.
It delivers regulated 5 V output with ±2% accuracy over 0.1–300 mA load and 6–40 V input range, while maintaining PSRR of 60 dB at 100 Hz. The device's output sink path clamps reverse current to limit Q-pin voltage to ≤5.5 V, protecting downstream components during battery reversal or load dump transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - ensures microcontroller I/O and sensor biasing remain within TTL/CMOS logic thresholds across temperature and load. |
| Drop Voltage | 250 mV typ. at 200 mA - enables regulation from 5.5 V input, critical for cold-crank operation in 12 V automotive systems. |
| Quiescent Current | 20 μA typ. - allows permanent VBAT connection without excessive battery drain in always-on modules (e.g., alarm controllers). |
| Output Current Limit | 320 mA min. - provides robust short-circuit protection while sustaining 300 mA continuous load for body control units. |
| Input Voltage Range | 5.5 V to 42 V - accommodates 12 V system transients including load dump (up to 40 V) and cold-crank dips. |
| Output Capacitor | ≥470 nF ceramic (ESR < 3 Ω) - eliminates need for large tantalum/electrolytic caps, reducing PCB area and improving reliability. |
| Inhibit Threshold | VINH_ON ≥ 3.1 V, VINH_OFF ≤ 0.8 V - compatible with standard 3.3 V/5 V GPIOs for MCU-controlled power sequencing. |
Pinout & Package
Package: P-TO252-5-1 (D-PAK, 5-pin, exposed tab for thermal conduction). Pin 3 (GND) and the exposed tab are internally connected to system ground and serve as primary heat dissipation path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Connects directly to battery rail via local 100 nF ceramic capacitor; requires low-inductance layout to suppress line noise. |
| 2 (INH) | Inhibit Control | Active-low enable; internal pull-down ensures safe default-off state during MCU boot or reset. |
| 3 (GND) | Ground Reference | Primary return path and thermal interface; must be soldered to large copper pour for Rthj-a ≤ 80 K/W. |
| 4 (N.C.) | No Connection | Unbonded pad; electrically isolated and must not be connected to any net. |
| 5 (Q) | Regulated Output | Delivers 5 V to loads; requires ≥470 nF ceramic cap and optional 4.7 µF electrolytic for transient surge suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-current sink protection | Clamps Q-pin voltage to ≤5.5 V during reverse-battery or inductive kickback, eliminating need for external blocking diode. |
| Ultra-low standby current | 5–9 μA in inhibited state enables >10-year battery life in always-connected telematics modules. |
| Stable with minimal output capacitance | Guaranteed stability with 470 nF ceramic cap (ESR < 3 Ω), reducing BOM cost and board space vs. legacy LDOs requiring ≥10 µF. |
| Integrated thermal shutdown | Activates at ~150 °C junction temperature and auto-recovers after cooldown, preventing latch-up during sustained overload. |
| Automotive qualification | AEC-Q100 Grade 1 (−40 °C to +125 °C ambient), compliant with ISO 7637-2 pulse 5a/b for load dump immunity. |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sensor Power |
|---|---|
Use Scenario: Powering LIN transceivers, door lock actuators, and interior lighting drivers in 12 V vehicle architectures. IC Role / Device Role / Timing Role: Primary 5 V supply regulator with inhibit control synchronized to ignition state. Use Value: 20 μA quiescent current prevents parasitic drain during vehicle sleep mode; 300 mA output sustains multiple parallel loads. | Use Scenario: Providing stable 5 V bias to oxygen sensors, crankshaft position sensors, and knock sensors near engine block. IC Role / Device Role / Timing Role: Local post-regulator after main DC/DC, delivering low-noise 5 V despite high EMI and thermal cycling. Use Value: Stable operation from 5.5 V input enables function during cold-crank; thermal shutdown protects against under-hood overheating. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Always-on 5 V rail for GPS/GSM baseband processors and secure boot ROM in connected car gateways. IC Role / Device Role / Timing Role: Standby-power regulator with MCU-controlled inhibit for secure firmware update sequencing. Use Value: Inhibit input allows precise power gating during OTA updates; reverse-current sink prevents damage during battery replacement. | Use Scenario: Powering image signal processor (ISP) and MIPI interface in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Secondary 5 V regulator decoupled from noisy main power rail, minimizing analog sensor noise coupling. Use Value: Ceramic-cap stability avoids microphonics and aging issues common with electrolytics in vibration-prone mounting locations. |
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 | Lower IQ (4.5 μA), but max input 6.5 V and no inhibit pin; rated only to 125 °C junction. | Not suitable for 12 V load-dump or under-hood use; limited to infotainment head units with clean 5 V input. | Select only if input stays ≤6.5 V and thermal environment is controlled. |
| TPS7B6750QPWPRQ1 | Higher IQ (45 μA), 40 V max input, integrated watchdog timer, AEC-Q100 Grade 0 (−40 °C to +150 °C). | Supports higher ambient temps and adds safety monitoring; lacks reverse-current sink on output. | Prefer when functional safety (ASIL-B) monitoring is required, and external reverse-protection diode is acceptable. |
Compared with TLV73350PDBVR and TPS7B6750QPWPRQ1, the TLE7276D uniquely combines 42 V input tolerance, 20 μA quiescent current, inhibit control, and reverse-current sink in a single AEC-Q100 Grade 1 package-making it optimal for cost-sensitive, thermally demanding, always-on automotive subsystems without added safety overhead.
Availability
TLE7276D is available at Aetrix Electronics and suitable for Body Control Modules, Engine Control Units, Telematics Control Units, and ADAS Camera Modules requiring stable component supply under automotive qualification and long-term production continuity.
Supply support for TLE7276D 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 manufacturing and AEC-Q100 validation infrastructure.
The TLE7276D belongs to Infineon's TLE automotive linear regulator family, engineered specifically for permanent-battery-connected modules in passenger vehicles and commercial trucks where ultra-low standby current and robust transient immunity are mandatory.
FAQ
What is the maximum allowable input voltage for continuous operation?
The TLE7276D supports continuous operation up to 42 V input, validated per ISO 7637-2 Pulse 5a (load dump) testing. Absolute maximum rating is 45 V for ≤10 seconds; sustained exposure above 42 V risks thermal runaway or accelerated parametric drift even if within absolute limits.
Can the TLE7276D operate without an output capacitor?
No. A minimum 470 nF ceramic output capacitor with ESR < 3 Ω is mandatory for loop stability. Omitting it causes oscillation and unregulated output voltage collapse under load. An additional 4.7 µF electrolytic capacitor is recommended for transient surge suppression but not required for basic regulation.
How does the inhibit function behave during power-up?
The INH pin has an internal pull-down resistor (~100 kΩ), ensuring the device remains disabled until the MCU or system controller actively drives INH ≥3.1 V. This prevents unintended power-on during brown-out or reset conditions, supporting fail-safe boot sequencing in automotive ECUs.
Is the exposed tab electrically isolated from other pins?
No. The exposed tab is internally connected to Pin 3 (GND) and serves as both the primary thermal path and electrical ground reference. It must be soldered to a grounded copper pour; isolation or floating mounting violates thermal and electrical specifications and voids AEC-Q100 compliance.
TLE7276D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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):
- 0.5V @ 200mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 30 µA
- Current - Supply (Max):
- 40 µA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Inhibit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TO252-5-11
TLE7276D FAQ
1.How can I place an order for TLE7276D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE7276D 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 TLE7276D reliable?
The price and inventory of TLE7276D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7276D is usually 5 days.
3.What payment methods are accepted for TLE7276D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7276D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE7276D?
TLE7276D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE7276D 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 TLE7276D?
For technical support, including TLE7276D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7276D requirements.
6.How does Aetrix verify that TLE7276D is sourced from the original manufacturer or authorized distributors?
All TLE7276D 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 TLE7276D meets industry standards.
7.What is the process for return or replacement of TLE7276D?
All TLE7276D units undergo pre-shipment inspection (PSI). If there is an issue with TLE7276D, 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 TLE7276D part is unused and in its original packaging.
Return procedure for TLE7276D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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