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

Infineon Technologies TLE72782GV33XUMA1

Name: TLE72782GV33XUMA1
Brand: Infineon Technologies
SKU: TLE72782GV33XUMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE72782GV33XUMA1

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE72782GV33XUMA1.pdf

Description:: IC REG LINEAR 3.3V 180MA DSO14

Quantity:: RFQ Add To RFQ list

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Inventory:4,148

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Product details

Overview

TLE72782GV33XUMA1 from Infineon Technologies is an automotive-grade monolithic low-dropout voltage regulator with integrated watchdog and reset generator, delivering 3.3 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 power supply under battery-permanent connection.

For engineers reviewing the TLE72782GV33XUMA1 datasheet, TLE72782GV33XUMA1 pinout, TLE72782GV33XUMA1 application, or TLE72782GV33XUMA1 equivalent, key selection criteria include reset delay adjustability, current-dependent watchdog deactivation, EN-controlled shutdown (<3 µA), dropout voltage performance, and AEC-Q100 qualification for harsh automotive environments.

Technical Context

The device integrates a bandgap reference, charge pump, reset generator with adjustable power-on delay (t_RD), and a standard watchdog whose deactivation threshold depends on output load current - enabling automatic disable during MCU standby. Its enable input (EN) forces shutdown with sub-3 µA current draw.

Thermal protection includes overtemperature shutdown and output current limiting (short-circuit/overload). Input voltage range is 4.2 V to 45 V, supporting wide automotive battery transients; output stability requires ≥470 nF ceramic capacitor with ESR ≤3 Ω at 10 kHz.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±2% - tight regulation ensures reliable MCU core logic supply under load and temperature variation
Max Output Current	180 mA - sufficient for low-power automotive MCUs and peripheral interfaces
Quiescent Current	<36 µA - enables always-on battery-connected systems without excessive parasitic drain
Dropout Voltage	Typ. 200 mV @ 100 mA - maintains regulation even during cold-crank battery dips to ~6 V
Input Voltage Range	4.2 V to 45 V - accommodates 12 V automotive systems including load dump transients
Junction Temp Range	-40 °C to +150 °C - qualified for under-hood ECU placement per AEC-Q100 Grade 0
Reset Threshold	V_RT = 92% of V_Q - ensures clean MCU reset before valid supply rail establishment

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 output requiring external pull-up; asserts low during power-up/down outside V_RT window
2–5, 10–12 GND	Ground Connect Pins	Multiple pins tied to PCB ground plane and thermal pad area for low-impedance return and heat dissipation
6 WM2 / 7 WM1	Watchdog Mode Select Bits	Binary configuration inputs selecting watchdog timeout and reset behavior per Figure 5 in datasheet
8 WDI	Watchdog Input	Edge-triggered pulse input; pulled low to disable watchdog when unused
9 Q	Regulated Output	3.3 V supply output; requires ≥470 nF ceramic capacitor with ≤3 Ω ESR placed adjacent to pin
13 I	Input Voltage	Main supply input (4.2–45 V); bypassed with 100 nF ceramic capacitor directly at pin
14 EN	Enable Input	Active-low enable; internal pull-down ensures default disable; drives IC into <3 µA shutdown state

Key Features

Feature	Design Value
Adjustable Power-On Reset Delay	t_RD configurable via external capacitor - allows synchronization with system boot timing requirements
Current-Dependent Watchdog Deactivation	Auto-disable below ~10 mA output load - eliminates false timeouts during MCU sleep modes
Integrated Overtemperature Shutdown	Triggers at T_j ≥150 °C - protects against thermal runaway in sealed enclosures
Output Current Limitation	Soft-limited to ~250 mA - prevents damage during short-circuit while maintaining safe fault energy
AEC-Q100 Qualified	Grade 0 (-40 °C to +150 °C) - validated for engine compartment deployment without derating

Applications

Engine Control Unit (ECU)

Transmission Control Module (TCM)

Use Scenario: Powers 32-bit MCU and CAN transceiver in gasoline direct injection ECU exposed to under-hood temperatures up to 140 °C.

IC Role / Device Role / Timing Role: Primary 3.3 V LDO with integrated reset and watchdog - replaces discrete reset IC + regulator combo.

Use Value: Eliminates external reset timing components and reduces BOM count by consolidating supervision functions.

Use Scenario: Supplies safety-critical transmission controller operating continuously during vehicle ignition-off battery monitoring.

IC Role / Device Role / Timing Role: Always-on regulator with <36 µA quiescent current and EN-controlled deep-sleep mode.

Use Value: Enables >1-year battery standby life without compromising fast wake-up capability via reset assertion.

Body Control Module (BCM)

Advanced Driver Assistance System (ADAS) Camera ECU

Use Scenario: Regulates power for LIN gateway MCU and sensor interface circuitry in door module with intermittent load profiles.

IC Role / Device Role / Timing Role: Load-adaptive watchdog supervisor - disables during MCU sleep to prevent spurious resets.

Use Value: Reduces firmware complexity by offloading watchdog management from MCU software stack.

Use Scenario: Provides stable 3.3 V rail for image signal processor and serializer in rear-view camera module mounted near exhaust.

IC Role / Device Role / Timing Role: High-temp LDO with overtemperature shutdown - sustains operation at 135 °C ambient with thermal derating.

Use Value: Avoids need for external thermal foldback circuitry while meeting ASIL-B functional safety constraints.

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive LDO-with-supervision applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV70733PDQNR	3.3 V, 300 mA, no integrated watchdog/reset; 25 µA IQ; SOT-23-5 package	Lacks supervision features; requires external reset IC and watchdog timer	Choose only if system already implements discrete supervision and needs higher current or smaller footprint
MAX16126ETA+T	3.3 V, 250 mA, integrated reset with fixed 200 ms delay; no watchdog; 15 µA IQ; 8-pin TDFN	Fixed reset delay; no current-sensitive watchdog deactivation or EN-controlled ultra-low-IQ shutdown	Select when watchdog functionality is unnecessary and deterministic reset timing suffices

Compared with TLV70733PDQNR and MAX16126ETA+T, TLE72782GV33XUMA1 uniquely combines AEC-Q100 Grade 0 qualification, current-dependent watchdog disable, adjustable reset delay, and <36 µA quiescent current - making it the sole option for compact, self-contained MCU supervision in thermally demanding automotive nodes.

Availability

TLE72782GV33XUMA1 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and body control modules requiring stable component supply under extended temperature and automotive transient conditions.

Supply support for TLE72782GV33XUMA1 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, and industrial control ICs, with global manufacturing and AEC-Q100 validation infrastructure.

This part belongs to Infineon's TLE7278 family of automotive LDO regulators with integrated supervision - designed specifically for single-chip microcontroller power and reset management in harsh under-hood environments.

FAQ

What is the minimum output capacitance required for stability?

The TLE72782GV33XUMA1 requires a minimum 470 nF ceramic output capacitor with ESR ≤3 Ω at 10 kHz. This value accounts for worst-case ±30% capacitance tolerance and ensures phase margin >45° across temperature and load. Using lower capacitance or higher ESR risks oscillation or poor transient response.

How does the watchdog deactivate automatically?

The watchdog deactivates when output load current falls below approximately 10 mA - corresponding to typical MCU standby mode. This current-dependent behavior is implemented internally via sensing of the pass transistor's conduction state, eliminating software polling or external current-sense circuitry.

Is an external pull-up resistor needed on the RO pin?

Yes - because TLE72782GV33XUMA1 uses an open-drain RO output. An external pull-up to 3.3 V or 5 V is mandatory. For 5 V pull-up, a minimum 4.75 kΩ resistor is required based on sink current (1.0 mA) and V_RO(min) (0.25 V); 5.6 kΩ is recommended for margin.

Can the reset delay time be adjusted, and how?

Yes - t_RD is set by an external capacitor connected between RO and GND. The delay scales linearly with capacitance: t_RD ≈ 100 ms per 100 nF. Values from 10 ms to 1 s are supported, allowing precise alignment with MCU boot sequence timing requirements.

TLE72782GV33XUMA1 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):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: -

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

TLE72782GV33XUMA1 FAQ

1.How can I place an order for TLE72782GV33XUMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE72782GV33XUMA1 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 TLE72782GV33XUMA1 reliable?

The price and inventory of TLE72782GV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE72782GV33XUMA1 is usually 5 days.

3.What payment methods are accepted for TLE72782GV33XUMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE72782GV33XUMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE72782GV33XUMA1?

TLE72782GV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE72782GV33XUMA1 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 TLE72782GV33XUMA1?

For technical support, including TLE72782GV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE72782GV33XUMA1 requirements.

6.How does Aetrix verify that TLE72782GV33XUMA1 is sourced from the original manufacturer or authorized distributors?

All TLE72782GV33XUMA1 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 TLE72782GV33XUMA1 meets industry standards.

7.What is the process for return or replacement of TLE72782GV33XUMA1?

All TLE72782GV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE72782GV33XUMA1, 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 TLE72782GV33XUMA1 part is unused and in its original packaging.

Return procedure for TLE72782GV33XUMA1:

1.Submit a request within 90 days.

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

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