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Infineon Technologies TLE7273G V50
- Part No.:
- TLE7273G V50
- Manufacturer:
- Infineon Technologies
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE7273G V50.pdf
- Description:
- IC REG LINEAR 5V 180MA DSO14
- Quantity:
- Payment:
- Shipping:
Inventory:4,956
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Product details
Overview
TLE7273GV50 from Infineon Technologies is a monolithic automotive-grade low-dropout voltage regulator with integrated window watchdog and reset generator, delivering 5.0 V ±2% output at up to 180 mA load, ultra-low quiescent current (<35 µA), and wide input range (5.5–45 V). It serves as the primary power supply and system supervision IC for microcontrollers in engine control units, body electronics, and ADAS modules under harsh thermal conditions.
For engineers reviewing the TLE7273GV50 datasheet, TLE7273GV50 pinout, TLE7273GV50 application, or TLE7273GV50 equivalent, key selection criteria include its adjustable power-on reset delay, current-dependent watchdog deactivation, -40 °C to +150 °C junction temperature operation, and integrated short-circuit/overtemperature protection - all critical for battery-connected automotive ECUs requiring ASIL-B capable supervision.
Technical Context
The TLE7273GV50 integrates a bandgap-referenced LDO regulator, a window watchdog with dual mode-select pins (WM1/WM2), and a reset generator with programmable delay. Its inhibit input enables deep-sleep mode (<3 µA), while the open-drain reset output (RO) features an internal 20 kΩ pull-up for GV50 variant.
Watchdog activation is triggered by WDI pulses; deactivation occurs when load current falls below threshold, enabling adaptive fault response. Protection logic includes foldback current limiting, thermal shutdown at ~170 °C, and reverse-output current blocking up to 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.00 V ±2% (1 mA–180 mA load, 6–16 V input); ensures stable MCU core voltage across battery transients |
| Quiescent Current | <35 µA (active), <3 µA (inhibited); enables always-on ECU functionality without battery drain |
| Dropout Voltage | 250 mV typical at 180 mA; sustains regulation down to VI = 5.25 V, supporting cold-crank scenarios |
| Input Voltage Range | 5.5 V to 45 V; covers full automotive battery range including load dump (40 V surge) |
| Junction Temp Range | -40 °C to +150 °C; qualified for under-hood placement per AEC-Q100 Grade 0 |
| Reset Output Type | Open-drain RO with internal 20 kΩ pull-up (GV50); simplifies interface to MCU reset pin without external resistor |
| Watchdog Mode Control | WM1/WM2 pins select 4 watchdog modes (windowed/non-windowed, enabled/disabled); enables configuration via PCB strapping |
Pinout & Package
P-DSO-14-8 package: thermally enhanced 14-pin exposed pad SOIC with 0.8 mm pitch; pins 2–5 and 10–12 must be connected to GND plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RO | Reset Output | Open-drain active-low reset signal; internal 20 kΩ pull-up enables direct MCU reset connection |
| 2–5, 10–12 GND | Ground / Thermal Pad | Multiple GND connections required for low-impedance return path and heat dissipation to PCB copper area |
| 6 WM2, 7 WM1 | Watchdog Mode Select | Dual digital inputs configuring watchdog behavior (windowed/non-windowed, enable/disable) via fixed voltage levels |
| 8 WDI | Watchdog Input | Edge-triggered pulse input; must be pulled low if watchdog disabled to prevent spurious resets |
| 9 VQ | Regulated Output | 5 V output requiring ≥470 nF ceramic capacitor placed adjacent to pin for stability |
| 13 VI | Input Voltage | Main supply input (5.5–45 V); requires 100 nF ceramic capacitor directly at pin for high-frequency decoupling |
| 14 INH | Inhibit Input | Active-low enable; internal pull-down allows default-off operation; <3 µA standby current when asserted |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable Power-On Reset Delay | Configurable via external capacitor on RO pin; enables synchronization with MCU boot sequence timing |
| Current-Dependent Watchdog Deactivation | Automatically disables watchdog when output current drops below threshold; prevents false timeouts during sleep modes |
| Integrated Short-Circuit Protection | Foldback current limiting reduces power dissipation during sustained short; avoids thermal runaway |
| Wide Input Range with Load Dump Tolerance | Withstands 40 V transients per ISO 7637-2 Pulse 5a; eliminates need for upstream TVS in many designs |
| Thermal Shutdown with Hysteresis | Triggers at ~170 °C junction temperature; restarts only after cooldown >15 °C to prevent cycling |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Supplies 5 V to 32-bit MCU and CAN transceivers in gasoline/diesel engine management systems operating continuously under hood temperatures up to 150 °C. IC Role / Device Role / Timing Role: Primary regulated power source and system supervisor; provides reset assertion during brown-out and watchdog monitoring of firmware execution. Use Value: Enables ASIL-B compliant fail-safe behavior via window watchdog and thermal shutdown, reducing need for external supervision ICs. | Use Scenario: Powers microcontroller and LIN transceivers in door modules and lighting controllers with permanent battery connection and infrequent wake-ups. IC Role / Device Role / Timing Role: Always-on LDO with inhibit-controlled deep-sleep mode; delivers precise 5 V while consuming <3 µA during vehicle sleep states. Use Value: Extends battery life in parked vehicles by minimizing quiescent draw without sacrificing fast wake-up capability. |
| Advanced Driver Assistance System (ADAS) | Transmission Control Unit (TCU) |
Use Scenario: Regulates power for vision-processing SoCs and radar sensor interfaces in forward collision warning and lane departure systems. IC Role / Device Role / Timing Role: High-reliability voltage source with integrated reset and watchdog; monitors real-time processing firmware for lockup detection. Use Value: Meets functional safety requirements (ISO 26262) through deterministic reset timing and current-triggered watchdog disable during low-power states. | Use Scenario: Supplies 5 V to transmission microcontrollers and solenoid drivers in automatic gearboxes subjected to vibration, oil immersion, and thermal cycling. IC Role / Device Role / Timing Role: Robust power manager with overtemperature shutdown and short-circuit protection; maintains regulation during cranking (VI ≥ 5.5 V). Use Value: Eliminates need for discrete thermal protection circuitry and supports extended lifetime in harsh mechanical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO-with-watchdog applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70750PDBVR | Single 5 V LDO only; no watchdog, reset, or inhibit function; 200 mA max output; 25 µA IQ | Lacks system supervision features; suitable only for non-safety-critical 5 V rail where MCU handles reset/watchdog | Select when supervision logic is implemented externally and cost is prioritized over integration |
| MAX16922ATP/V+T | 5 V LDO + watchdog + reset; 250 mA output; 30 µA IQ; operates to 42 V; no current-dependent watchdog disable | Fixed watchdog timeout; lacks adaptive deactivation based on load current; different pinout and enable polarity | Choose when standardized watchdog timing suffices and compatibility with Maxim's ecosystem is required |
Compared with TLV70750PDBVR and MAX16922ATP/V+T, the TLE7273GV50 uniquely combines ultra-low quiescent current, current-triggered watchdog disable, and AEC-Q100 Grade 0 qualification - making it optimal for battery-connected automotive ECUs demanding both efficiency and functional safety.
Availability
TLE7273GV50 is available at Aetrix Electronics and suitable for engine control units, body control modules, advanced driver assistance systems, and transmission control units requiring stable component supply across automotive production lifecycles.
Supply support for TLE7273GV50 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 expertise.
The TLE7273 series belongs to Infineon's automotive power system IC portfolio, designed specifically to integrate voltage regulation, reset generation, and watchdog supervision into a single AEC-Q100-qualified device for microcontroller-based ECU power domains.
FAQ
What is the purpose of the WM1 and WM2 pins on the TLE7273GV50?
WM1 and WM2 are digital mode-select inputs that configure the window watchdog behavior - including enabled/disabled state and windowed/non-windowed operation - using fixed voltage thresholds (e.g., >4.0 V for high, <0.8 V for low). They allow hardware-based configuration without MCU intervention, supporting fail-safe boot and static system design.
Does the TLE7273GV50 require an external capacitor on the RO pin for reset delay?
Yes - an external capacitor connected between RO and GND sets the power-on reset delay time. The delay increases linearly with capacitance value (e.g., 100 nF ≈ 10 ms), enabling precise alignment with MCU boot timing requirements without software configuration.
How does the current-dependent watchdog deactivation work?
When output current IQ falls below a device-specific threshold (typically ~10–20 mA), the watchdog automatically disables to prevent timeout during MCU sleep modes. This behavior is intrinsic to the analog supervision circuitry and requires no external components or firmware control.
Can the TLE7273GV50 operate with input voltage below 6 V?
Yes - the minimum operating input voltage is 5.5 V, allowing operation during cold-crank events where battery voltage dips to ~5.8 V. Below 5.5 V, regulation ceases and RO asserts reset; dropout voltage is 250 mV typical at 180 mA, so VQ remains stable down to VI = 5.25 V.
TLE7273G V50 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 180mA
- Current - Output:
- 180mA
- Current - Quiescent (Iq):
- 35 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Inhibit, Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- P-DSO-14-8
TLE7273G V50 FAQ
1.How can I place an order for TLE7273G V50 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE7273G V50 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 TLE7273G V50 reliable?
The price and inventory of TLE7273G V50 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7273G V50 is usually 5 days.
3.What payment methods are accepted for TLE7273G V50?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7273G V50 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE7273G V50?
TLE7273G V50 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE7273G V50 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 TLE7273G V50?
For technical support, including TLE7273G V50 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7273G V50 requirements.
6.How does Aetrix verify that TLE7273G V50 is sourced from the original manufacturer or authorized distributors?
All TLE7273G V50 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 TLE7273G V50 meets industry standards.
7.What is the process for return or replacement of TLE7273G V50?
All TLE7273G V50 units undergo pre-shipment inspection (PSI). If there is an issue with TLE7273G V50, 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 TLE7273G V50 part is unused and in its original packaging.
Return procedure for TLE7273G V50:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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