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Infineon Technologies TLE7272D
- Part No.:
- TLE7272D
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLE7272D.pdf
- Description:
- IC REG LINEAR 5V 300MA TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,150
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Product details
Overview
TLE7272D from Infineon Technologies is a monolithic 5-V low-dropout linear voltage regulator with ±2% output accuracy, 300 mA load capability, and ultra-low quiescent current (20 µA typ). It integrates reset monitoring (4.65 V threshold, 16 ms delay), inhibit control, and reverse-current protection, and is qualified for automotive battery-supplied microcontroller power rails.
For engineers reviewing the TLE7272D datasheet, TLE7272D pinout, TLE7272D application, or TLE7272D equivalent, key selection criteria include dropout voltage at 200 mA (250 mV typ), reset hysteresis (100 mV), thermal resistance (8 K/W junction-to-case), ceramic capacitor stability (≥470 nF), and inhibit input logic thresholds (3.1 V turn-on, 0.8 V turn-off).
Technical Context
The TLE7272D uses a charge-pump-based bandgap reference and internal current-limiting circuitry to maintain regulation across 5.5–42 V input while delivering up to 300 mA. Its reset generator monitors output voltage with 4.65 V falling-edge threshold and 16 ms delay before asserting high-impedance open-collector RO.
Thermal shutdown activates at 150 °C junction temperature, and the device sustains stable operation with ceramic output capacitors ≥470 nF (ESR < 3 Ω). Inhibit input disables regulation, reducing quiescent current to 5 µA, and integrated sink circuitry clamps Q-pin voltage to ≤5.5 V during reverse current events.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - ensures reliable µC supply within automotive-grade tolerance bands |
| Max Output Current | 320 mA - supports full-load operation of mid-complexity automotive ECUs |
| Dropout Voltage | 250 mV @ 200 mA - enables regulation down to VI = 5.25 V, critical for cold-crank scenarios |
| Quiescent Current | 20 µA typ - allows permanent VBAT connection without excessive battery drain |
| Reset Threshold | 4.65 V (±150 mV) - triggers controlled µC reset before brown-out lockup |
| Inhibit Logic | Turn-on at 3.1 V, turn-off at 0.8 V - compatible with standard CMOS logic levels |
| Thermal Resistance | 8 K/W (junct.-case) - enables direct PCB heatsinking in TO252-5 package |
Pinout & Package
Package: P-TO252-5 (D-PAK), thermally enhanced surface-mount package with Pin 3 internally connected to heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Primary VIN node; requires local 100 nF ceramic decoupling directly at IC |
| 2 (RO) | Reset Output | Open-collector output with 30 kΩ internal pull-up; asserts LOW until VQ ≥ 4.65 V + 16 ms delay |
| 3 (GND) | Ground / Heatsink | Electrical ground and primary thermal path; must be soldered to large copper pour |
| 4 (INH) | Inhibit Input | Active-low enable; internal pull-down; draws ≤1 µA when held LOW |
| 5 (Q) | Regulated Output | 5 V regulated rail; requires ≥470 nF ceramic capacitor (ESR < 3 Ω) for loop stability |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-current sink protection | Clamps Q-pin voltage to ≤5.5 V during backfeed, preventing downstream overvoltage damage |
| Stable with ceramic capacitors | Guaranteed loop stability with ≥470 nF ceramic output cap (ESR < 3 Ω), eliminating bulk electrolytic dependency |
| Automotive-grade thermal shutdown | Activates at 150 °C junction temperature and auto-recovers after cooldown, supporting under-hood deployment |
| Low-noise reset timing | 16 ms fixed reset delay with 12 µs reaction time ensures deterministic µC initialization sequence |
| Ultra-low standby consumption | 5 µA max inhibited current enables always-on systems (e.g., CAN wake-up receivers) without parasitic drain |
Applications
| Body Control Module (BCM) | Engine Control Unit (ECU) Sub-Rail |
|---|---|
Use Scenario: Powering 8-bit/16-bit microcontrollers and CAN transceivers in vehicle door modules and lighting controllers. IC Role / Device Role / Timing Role: Primary 5 V supply with integrated reset signaling for safe boot and brown-out recovery. Use Value: 20 µA quiescent current prevents battery discharge during vehicle sleep mode; inhibit input enables centralized power gating. | Use Scenario: Providing auxiliary 5 V rail for sensor signal conditioning and diagnostic circuitry alongside main ECU regulator. IC Role / Device Role / Timing Role: Secondary LDO with independent reset assertion to isolate faults in sub-systems without resetting main controller. Use Value: 4.65 V reset threshold and 100 mV hysteresis prevent oscillatory resets during transient load dips; 300 mA capacity supports multiple op-amps and ADCs. |
| Telematics Control Unit (TCU) | Advanced Driver Assistance Systems (ADAS) Camera Module |
Use Scenario: Supplying GPS baseband processor and cellular modem in always-connected telematics gateways. IC Role / Device Role / Timing Role: Always-on 5 V regulator with inhibit-controlled shutdown during deep-sleep states. Use Value: 5 µA inhibited current meets ISO 16750-2 quiescent drain requirements; 42 V absolute max input withstands load-dump transients. | Use Scenario: Powering image signal processor (ISP) and serializer ICs in rear-view or surround-view camera ECUs. IC Role / Device Role / Timing Role: Low-noise, thermally robust 5 V source with fast-reset response for fault-tolerant vision processing startup. Use Value: 8 K/W junction-to-case thermal resistance enables conduction cooling on compact PCBs; 12 µs reset reaction time supports tight boot timing budgets. |
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 | Lower IQ (4 µA), lower max current (300 mA), no integrated reset or inhibit | Lacks reset monitoring and inhibit control; requires external reset IC and enable logic | Choose for cost-sensitive non-safety-critical consumer applications where reset functionality is handled externally |
| TPS7B6950QDCYRQ1 | Higher accuracy (±1%), higher PSRR (70 dB), no charge-pump noise, but higher IQ (35 µA) | Superior noise performance suits analog sensor front-ends; lacks reverse-current sink protection | Prefer for precision analog subsystems where low noise outweighs reverse-current protection needs |
Compared with TLV73350PDBVR and TPS7B6950QDCYRQ1, the TLE7272D uniquely combines automotive-grade reset, inhibit, reverse-current protection, and ultra-low IQ in a single TO252-5 package-making it optimal for safety-critical, always-on ECU sub-rails requiring minimal external components.
Availability
TLE7272D is available at Aetrix Electronics and suitable for body control modules, engine control units, telematics gateways, and ADAS camera modules requiring stable component supply across automotive production lifecycles.
Supply support for TLE7272D 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.
The TLE7272D belongs to Infineon's TLE automotive voltage regulator family, engineered specifically for battery-supplied microcontroller power domains in harsh environments-including cold-crank, load-dump, and extended temperature operation.
FAQ
What is the minimum output capacitor required for stable operation?
The TLE7272D requires a minimum 470 nF ceramic output capacitor with ESR < 3 Ω to ensure loop stability across all operating conditions. Adding a parallel 4.7–47 µF electrolytic capacitor improves transient load response but is not mandatory for basic regulation stability.
How does the reset function behave during power-up?
At power-up, the RO pin remains LOW until the output voltage reaches 4.65 V, then stays LOW for an additional 16 ms (typical) before transitioning HIGH. This ensures the microcontroller receives a clean, debounced reset signal after stable 5 V is established.
Can the TLE7272D be used with input voltages below 6 V?
No-the device is specified for operation only above 5.5 V input. Below this, regulation is not guaranteed, and the reset circuit may not initialize correctly. It is not designed for USB-powered or low-voltage battery applications.
Is an external pull-up resistor required on the RO pin?
No-an internal 30 kΩ pull-up resistor is integrated. An external resistor ≥10 kΩ to Q is optional and only needed if stronger pull-up strength or different voltage referencing is required; it is not necessary for standard microcontroller reset input compatibility.
TLE7272D 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, Reset
- 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
TLE7272D FAQ
1.How can I place an order for TLE7272D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE7272D 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 TLE7272D reliable?
The price and inventory of TLE7272D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7272D is usually 5 days.
3.What payment methods are accepted for TLE7272D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7272D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE7272D?
TLE7272D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE7272D 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 TLE7272D?
For technical support, including TLE7272D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7272D requirements.
6.How does Aetrix verify that TLE7272D is sourced from the original manufacturer or authorized distributors?
All TLE7272D 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 TLE7272D meets industry standards.
7.What is the process for return or replacement of TLE7272D?
All TLE7272D units undergo pre-shipment inspection (PSI). If there is an issue with TLE7272D, 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 TLE7272D part is unused and in its original packaging.
Return procedure for TLE7272D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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