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Infineon Technologies TLE72732EV50XUMA1
- Part No.:
- TLE72732EV50XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE72732EV50XUMA1.pdf
- Description:
- IC REG LIN 5V 180MA SSOP-14-EP
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TLE72732EV50XUMA1 from Infineon Technologies is a monolithic automotive-grade low-dropout voltage regulator with integrated window watchdog and power-on reset, delivering 5 V ±2% output at up to 180 mA, ultra-low quiescent current (<36 µA), and operation across -40 °C to +150 °C junction temperature - deployed in engine control units for microcontroller supply under battery-permanent connection.
For engineers reviewing the TLE72732EV50XUMA1 datasheet, TLE72732EV50XUMA1 pinout, TLE72732EV50XUMA1 application, or TLE72732EV50XUMA1 equivalent, key selection criteria include watchdog mode configuration (WM1/WM2), reset delay timing (tRD = 16 ms typ.), exposed-pad thermal performance (RthJA = 47 K/W), enable-controlled shutdown (<3 µA), and PG-SSOP-14 package compatibility with heatsink-area PCB layout.
Technical Context
The TLE72732EV50XUMA1 integrates a bandgap-referenced LDO regulator, charge-pump-based window watchdog with adjustable timing via WM1/WM2 pins, and a reset generator with 16 ms power-up delay and glitch immunity (tRR). Its architecture supports fail-safe microcontroller supervision in always-on automotive domains.
It operates across 5.5–45 V input range, delivers regulated 5 V output with <36 µA quiescent current in active mode and <3 µA in EN-disabled state, and includes overtemperature shutdown, output current limiting, and AEC-Q100 Grade 0 qualification for under-hood applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5 V ±2% - ensures stable MCU core supply within automotive voltage tolerance bands |
| Max Output Current | 180 mA - sufficient for ASIL-B-compliant microcontrollers and peripheral logic |
| Quiescent Current | <36 µA - enables >1-year battery standby without excessive drain in always-on systems |
| Dropout Voltage | Typ. 300 mV @ 100 mA - maintains regulation down to 5.3 V input during cold-crank transients |
| Reset Delay Time | 16 ms typ. - provides deterministic power-on sequencing before MCU release from reset |
| Watchdog Window | Configurable via WM1/WM2 - supports fast (32 ms open window) or slow timing modes per system safety requirements |
| Junction Temp Range | −40 °C to +150 °C - validated for direct mounting on engine control module PCBs near heat sources |
Pinout & Package
Package: PG-SSOP-14 with exposed thermal pad - requires PCB-level GND-connected heatsink area (≥300 mm² recommended) for RthJA = 66 K/W thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 RO | Reset Output | Open-drain with integrated 20 kΩ pull-up to Q - asserts active-low reset to MCU until VQ ≥ VRT and tRD expires |
| 2,5 GND | Ground Reference | Primary signal and power return; must be low-impedance connection to PCB ground plane |
| 3,4,10,11,12 n.c. | No Connect | Internally unconnected; may be left floating or tied to GND for mechanical stability |
| 6 WM2 / 7 WM1 | Watchdog Mode Control | Binary-select watchdog timing and reset behavior; connect to Q or GND per Figure 5 state diagram |
| 8 WDI | Watchdog Input | Edge-triggered pulse input; pull to GND with WM1/WM2 high to disable watchdog function |
| 9 Q | Regulated Output | 5 V supply output; requires ≥470 nF ceramic capacitor with ESR ≤3 Ω placed adjacent to pin |
| 13 I | Input Voltage | 45 V max input; requires 100 nF ceramic decoupling capacitor directly at pin |
| 14 EN | Enable Input | Active-low enable; internal pull-down ensures safe default-off state when un-driven |
| Pad (Exposed) | Thermal Pad | Must be soldered to GND-connected copper area on PCB for thermal dissipation and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Window Watchdog | Configurable timing via WM1/WM2 pins - enables ASIL-B-compliant fault detection without external timer IC |
| Power-On Reset Generator | 16 ms typ. delay with glitch immunity (tRR) - prevents spurious MCU resets during supply ramp-up |
| Ultra-Low Quiescent Current | <36 µA active / <3 µA disabled - meets ISO 16750-2 Class D battery drain limits for parked vehicles |
| Thermal Protection | Automatic overtemperature shutdown - latches off until Tj falls below 135 °C hysteresis threshold |
| AEC-Q100 Qualified | Grade 0 (−40 °C to +150 °C) - certified for engine compartment deployment without derating |
Applications
| Engine Control Unit (ECU) | Transmission Control Module (TCM) |
|---|---|
Use Scenario: Continuous 12 V battery supply powering 32-bit MCU and CAN transceivers in under-hood environment. IC Role / Device Role / Timing Role: Primary 5 V LDO regulator with watchdog supervision and reset generation for MCU boot integrity. Use Value: Maintains regulation during cold-crank (5.5 V min), survives 150 °C ambient, and prevents runaway via configurable watchdog window. | Use Scenario: Power management for dual-core safety MCU in ZF 8HP transmission controller with functional safety requirements. IC Role / Device Role / Timing Role: Safety-critical voltage supervisor providing reset assertion and watchdog monitoring per ISO 26262 ASIL-B decomposition. Use Value: Integrated reset delay and window watchdog eliminate need for discrete supervisor IC, reducing BOM count and board space. |
| Body Control Module (BCM) | Advanced Driver Assistance System (ADAS) Camera ECU |
Use Scenario: Always-on power rail for LIN gateway MCU and sensor interface circuitry in door module. IC Role / Device Role / Timing Role: Low-quiescent LDO enabling >1-year battery life in sleep mode, with EN-controlled wake-up sequencing. Use Value: <3 µA shutdown current meets OEM parasitic drain targets; integrated pull-up on RO simplifies reset net routing. | Use Scenario: Powering image signal processor and SerDes in rear-view camera ECU mounted near exhaust manifold. IC Role / Device Role / Timing Role: High-temp-stable 5 V regulator with thermal shutdown and watchdog for vision processing chain. Use Value: Exposed-pad package achieves RthJA = 56 K/W with 600 mm² heatsink - sustains 180 mA output at 135 °C case temperature. |
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-channel 5 V LDO only; no watchdog, reset, or EN; 200 mA output; SOT-23-5 package | Lacks safety functions - suitable for non-safety MCU peripherals only | Select only if watchdog/reset supervision is handled externally or not required |
| MAX16910ATP/V+T | 5 V LDO + watchdog + reset; 250 mA; 40 V max input; TQFN-20 package; higher quiescent current (60 µA) | Higher pin count and larger footprint; supports wider input but less thermally efficient in SSOP form factor | Prefer when higher output current or extended input range outweighs thermal and layout constraints |
Compared with TLV70750PDBVR and MAX16910ATP/V+T, TLE72732EV50XUMA1 uniquely balances AEC-Q100 Grade 0 qualification, ultra-low quiescent current (<36 µA), SSOP-14 exposed-pad thermal performance, and integrated watchdog timing configurability - making it optimal for compact, high-temp, safety-aware engine and transmission ECUs.
Availability
TLE72732EV50XUMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply with automotive-grade reliability and long-term lifecycle support.
Supply support for TLE72732EV50XUMA1 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 electronics, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.
The TLE7273 series belongs to Infineon's automotive power system basis chips (SBC) portfolio, designed specifically for robust, integrated power and supervision of microcontrollers in harsh under-hood environments.
FAQ
What is the minimum input voltage required for regulation at full load?
The TLE72732EV50XUMA1 maintains 5 V regulation down to 5.5 V input at 180 mA load, based on its 300 mV typical dropout voltage. Below 5.5 V, output voltage drops linearly with input; cold-crank operation must ensure VI remains ≥5.5 V to sustain MCU functionality.
How is the watchdog window timing configured using WM1 and WM2?
WM1 and WM2 pins set watchdog timing per Figure 5 in the datasheet: WM1=LOW/WM2=LOW selects fast mode (32 ms open window), WM1=HIGH/WM2=LOW selects medium, and both HIGH disables watchdog. Pins must be hard-wired to Q or GND - no dynamic reconfiguration during operation.
Does the RO pin require an external pull-up resistor?
No - the TLE72732EV50XUMA1 integrates a 20 kΩ pull-up resistor from RO to Q, eliminating external components. This differs from the GV33/GV26 variants, which require external pull-ups. The internal resistor activates only when VQ ≥ 1 V.
What PCB layout practices are critical for thermal performance?
For optimal thermal performance, the exposed pad must be soldered to a ≥300 mm² GND-connected copper area with ≥6 thermal vias (0.3 mm diameter) connecting to inner GND planes. Avoid isolating the pad or routing signals underneath it - this reduces RthJA from 141 K/W (footprint-only) to 66 K/W.
TLE72732EV50XUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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):
- 36 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable, Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-EP
TLE72732EV50XUMA1 FAQ
1.How can I place an order for TLE72732EV50XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE72732EV50XUMA1 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 TLE72732EV50XUMA1 reliable?
The price and inventory of TLE72732EV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE72732EV50XUMA1 is usually 5 days.
3.What payment methods are accepted for TLE72732EV50XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE72732EV50XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE72732EV50XUMA1?
TLE72732EV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE72732EV50XUMA1 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 TLE72732EV50XUMA1?
For technical support, including TLE72732EV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE72732EV50XUMA1 requirements.
6.How does Aetrix verify that TLE72732EV50XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE72732EV50XUMA1 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 TLE72732EV50XUMA1 meets industry standards.
7.What is the process for return or replacement of TLE72732EV50XUMA1?
All TLE72732EV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE72732EV50XUMA1, 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 TLE72732EV50XUMA1 part is unused and in its original packaging.
Return procedure for TLE72732EV50XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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