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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Infineon Technologies TLE72732GV50XUMA1

Name: TLE72732GV50XUMA1
Brand: Infineon Technologies
SKU: TLE72732GV50XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE72732GV50XUMA1

Manufacturer:: Infineon Technologies

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: TLE72732GV50XUMA1.pdf

Description:: IC REG LINEAR 5V 180MA DSO14

Quantity:: RFQ Add To RFQ list

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Inventory:3,003

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Product details

Overview

TLE72732GV50XUMA1 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 36 µA quiescent current, and operation from 5.5 V to 45 V input across –40 °C to +150 °C junction temperature - used for microcontroller supply in always-on battery-connected ECUs such as body control modules.

For engineers reviewing the TLE72732GV50XUMA1 datasheet, TLE72732GV50XUMA1 pinout, TLE72732GV50XUMA1 application, or TLE72732GV50XUMA1 equivalent, key selection considerations include its adjustable power-on reset delay, current-dependent watchdog deactivation, integrated 20 kΩ RO pull-up (GV50 variant), thermal shutdown, and AEC-Q100 qualification for harsh automotive environments.

Technical Context

The TLE72732GV50XUMA1 integrates a bandgap-referenced LDO regulator, charge-pump-based window watchdog with mode selection via WM1/WM2 pins, and a reset generator with glitch immunity (t_RR = 10 µs). Its reset threshold (V_RT) is fixed at 4.65 V, and power-on reset delay (t_RD) is typ. 16 ms.

Watchdog timing is configurable: WM1/WM2 set open-window duration (typ. 32–256 ms) and ignore-window length (32 ms); deactivation occurs when watchdog current falls below 100 µA. The device uses internal current limiting and overtemperature shutdown (T_j > 165 °C) for fault protection.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2% - ensures stable MCU core/logic supply within automotive voltage tolerance bands
Max Output Current	180 mA - supports mid-complexity microcontrollers (e.g., 32-bit ARM Cortex-M) without external boost
Quiescent Current	< 36 µA - enables <10 µA system sleep current when EN = low, critical for battery drain compliance
Input Voltage Range	5.5 V to 45 V - accommodates cold-crank (5.5 V) and load-dump (45 V) transients per ISO 7637-2
Dropout Voltage	Typ. 300 mV @ 180 mA - maintains regulation during low-battery conditions down to 5.3 V input
Reset Threshold	4.65 V - triggers RO low when V_Q drops below safe MCU operating level, with 10 µs glitch immunity
Operating Temp	–40 °C to +150 °C - qualified for under-hood placement (e.g., engine control units)

Pinout & Package

Package: PG-DSO-14 (14-pin exposed-pad SOIC variant, RoHS-compliant, AEC-Q100 qualified).

Pin/Terminal	Circuit Role	Design Meaning
1 RO	Reset Output	Open-drain (GV33/GV26) or integrated 20 kΩ pull-up to Q (GV50); asserts low on V_Q undervoltage or watchdog timeout
2–5, 10–12 GND	Ground / Thermal Pad	Multiple GND pins required for low-impedance return path and PCB heat sinking; pins 4–5 & 10–12 connect to heatsink area
6 WM2, 7 WM1	Watchdog Mode Control	Binary-select watchdog timing window (fast/normal/slow); tied to Q or GND to configure behavior per Figure 5
8 WDI	Watchdog Input	Edge-triggered pulse input; must be toggled within open window to prevent reset; grounded to disable watchdog
9 Q	Regulated Output	5 V output; requires ≥470 nF ceramic capacitor with ESR ≤3 Ω placed adjacent to pin for stability
13 I	Input Voltage	45 V max input; requires 100 nF ceramic decoupling capacitor directly at pin for transient suppression
14 EN	Enable Input	Active-low enable; internal pull-down ensures default disable; drives IC into <3 µA shutdown state when low

Key Features

Feature	Design Value
Adjustable Power-On Reset Delay	t_RD = 16 ms typ. - prevents premature MCU boot before supply stabilization, configurable via external RC on RO
Current-Dependent Watchdog Deactivation	Deactivates when watchdog current <100 µA - avoids false resets during low-current MCU sleep modes
Integrated Output Current Limit	180 mA foldback limit - protects against sustained short-circuit without external current-sense components
Overtemperature Shutdown	Triggers at T_j > 165 °C - latches off until thermal recovery, preventing silicon damage during overload
AEC-Q100 Grade 0 Qualification	Validated for 150 °C ambient operation - meets requirements for engine compartment deployment

Applications

Body Control Module (BCM)

Engine Control Unit (ECU)

Use Scenario: Always-on power rail for 32-bit MCU managing door locks, lighting, and HVAC interfaces.

IC Role / Device Role / Timing Role: Primary 5 V LDO with watchdog supervision and cold-crank tolerant input range.

Use Value: Enables <10 µA sleep current and survives 45 V load-dump events without external TVS or shutdown logic.

Use Scenario: Microcontroller supply in high-temperature engine bay location with intermittent ignition pulses.

IC Role / Device Role / Timing Role: Regulator + reset + watchdog co-located on same die for deterministic fault response.

Use Value: Eliminates need for discrete reset IC and external watchdog timer, reducing BOM count by two components.

Transmission Control Module (TCM)

Advanced Driver Assistance System (ADAS) Camera ECU

Use Scenario: Powering safety-critical transmission controller requiring fail-safe reset signaling.

IC Role / Device Role / Timing Role: Provides synchronized reset assertion and window watchdog monitoring of MCU firmware execution.

Use Value: Guarantees t_RR = 10 µs noise immunity on V_Q, preventing spurious resets during CAN bus switching transients.

Use Scenario: Always-on imaging subsystem with wake-on-motion capability and thermal constraints.

IC Role / Device Role / Timing Role: Low-quiescent LDO enabling <36 µA standby draw while maintaining watchdog supervision.

Use Value: Extends vehicle battery life in parking mode beyond 30 days without recharge, meeting OEM specifications.

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
TLV70733PDRVR	3.3 V fixed output, no watchdog/reset, 200 mA, 25 µA IQ, SOT-563 package	Lacks integrated watchdog, reset, and high-temp rating; limited to cabin-located non-safety systems	Select only if watchdog functionality is handled externally and ambient temp stays ≤105 °C
MAX16910ATA+T	5 V output, integrated watchdog & reset, but 60 µA IQ, -40°C to +125°C, TDFN-10	Higher quiescent current and lower max junction temperature reduce suitability for under-hood use	Prefer where PCB space is constrained and thermal margin >25°C is available

Compared with TLV70733PDRVR and MAX16910ATA+T, the TLE72732GV50XUMA1 uniquely combines AEC-Q100 Grade 0 qualification, 150 °C operation, sub-36 µA IQ, and integrated window watchdog - making it the only option qualified for direct engine-compartment placement with full functional safety supervision.

Availability

TLE72732GV50XUMA1 is available at Aetrix Electronics and suitable for body control modules, engine control units, and transmission control modules requiring stable component supply under automotive qualification and extended temperature operation.

Supply support for TLE72732GV50XUMA1 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 AEC-Q100 validation infrastructure.

The TLE7273-2 product line delivers integrated power-supply supervision ICs for automotive microcontrollers - designed specifically to replace discrete LDO + reset + watchdog combinations in space- and reliability-constrained ECU designs.

FAQ

What is the function of the WM1 and WM2 pins?

WM1 and WM2 are binary watchdog mode configuration inputs that select open-window duration (32–256 ms) and ignore-window length (32 ms) per Figure 5 of the datasheet. They must be tied to Q (output voltage) or GND - floating states are undefined and may cause unpredictable watchdog behavior or reset assertion.

Does TLE72732GV50XUMA1 require an external pull-up resistor on the RO pin?

No - the GV50 variant integrates a 20 kΩ pull-up resistor from RO to Q. External pull-up is only required for TLE7273-2GV33 and TLE7273-2GV26 variants, which feature open-drain RO outputs. For those, a ≥5.6 kΩ resistor to 5 V is recommended.

Can the watchdog be disabled permanently?

Yes - tie both WM1 and WM2 to Q (5 V), and connect WDI to GND. This disables watchdog monitoring while preserving reset functionality. The device remains fully operational as a 5 V LDO with power-on reset and thermal protection.

What is the minimum output capacitance required for stability?

The minimum output capacitance is 470 nF ceramic with ESR ≤3 Ω at 10 kHz. This value accounts for worst-case ±30% capacitance tolerance. Using smaller or higher-ESR capacitors risks oscillation or poor transient response, especially during load steps up to 180 mA.

TLE72732GV50XUMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: OPTIREG™

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):: 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-DSO-14

TLE72732GV50XUMA1 FAQ

1.How can I place an order for TLE72732GV50XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE72732GV50XUMA1 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 TLE72732GV50XUMA1 reliable?

The price and inventory of TLE72732GV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE72732GV50XUMA1 is usually 5 days.

3.What payment methods are accepted for TLE72732GV50XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE72732GV50XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE72732GV50XUMA1?

TLE72732GV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE72732GV50XUMA1 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 TLE72732GV50XUMA1?

For technical support, including TLE72732GV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE72732GV50XUMA1 requirements.

6.How does Aetrix verify that TLE72732GV50XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE72732GV50XUMA1 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 TLE72732GV50XUMA1 meets industry standards.

7.What is the process for return or replacement of TLE72732GV50XUMA1?

All TLE72732GV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE72732GV50XUMA1, 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 TLE72732GV50XUMA1 part is unused and in its original packaging.

Return procedure for TLE72732GV50XUMA1:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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