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

Infineon Technologies TLE7270D

Name: TLE7270D
Brand: Infineon Technologies
SKU: TLE7270D
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE7270D

Manufacturer:: Infineon Technologies

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

Package:: TO-252-5, DPAK (4 Leads + Tab), TO-252AD

Datasheet:: TLE7270D.pdf

Description:: IC REG LINEAR FIXED LDO REG

Quantity:: RFQ Add To RFQ list

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Inventory:2,050

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Product details

Overview

TLE7270D from Infineon Technologies is a monolithic 5-V low-dropout voltage regulator with ±2% output accuracy, 20 µA quiescent current, and 300 mA output capability, designed for automotive microcontroller supply in harsh environments up to 150 °C junction temperature. It integrates power-on/undervoltage reset, output current limitation, overtemperature shutdown, and reverse-current protection via internal sink circuitry.

For engineers reviewing the TLE7270D datasheet, TLE7270D pinout, TLE7270D application, or TLE7270D equivalent, key selection criteria include ultra-low I_Q for always-on battery systems, reset timing configurability via DT pin, ceramic capacitor compatibility down to 470 nF, and AEC-Q100 qualification for automotive power rail stability.

Technical Context

The TLE7270D employs a charge pump-based LDO architecture enabling stable regulation at ultra-low quiescent current (20 µA typ.), with integrated bandgap reference and reset generator featuring selectable power-on delay via DT pin connection to GND or Q. Its output stage includes current limiting (301 mA trip) and thermal shutdown with hysteresis.

It supports input voltages from 5.5 V to 42 V and maintains regulation down to V_I = V_Q + 250 mV (typ.) at 200 mA load. The open-collector RO pin provides reset assertion down to V_Q = 1 V, and internal sink circuitry clamps Q pin voltage ≤5.5 V during reverse current events.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.0 V ±2% - ensures reliable µC core/logic supply across temperature and line/load variation
Quiescent Current	20 µA typ. - enables permanent VBAT connection without excessive battery drain
Max Output Current	300 mA - sufficient for mid-tier automotive MCUs and peripheral ICs
Dropout Voltage	250 mV typ. at 200 mA - allows operation with minimal headroom above 5 V rail
Reset Threshold	Asserts RO low when V_Q drops to 1 V - provides early fault detection before logic failure
Operating Temp	−40 °C to +150 °C - qualified for under-hood automotive placement
ESD Rating	HBM ±3 kV, CDM ±1.5 kV - meets AEC-Q100 stress requirements

Pinout & Package

Package: PG-TO252-5 (TO-252-5), thermally enhanced surface-mount package with exposed heat slug internally connected to GND.

Pin/Terminal	Circuit Role	Design Meaning
1 (I)	Input	High-voltage input (up to 42 V); requires local ceramic decoupling directly at pin
2 (RO)	Reset Output	Open-collector reset signal with internal pull-up; asserts low on undervoltage or power-on delay expiry
3 (GND)	Ground	Power and signal reference; internally bonded to heat slug
4 (DT)	Delay Timing	Selects POR delay time: connect to GND for short delay (~10 ms), to Q for long delay (~100 ms)
5 (Q)	Output	Regulated 5 V output; requires external capacitor (≥470 nF, ESR ≤10 Ω @ 10 kHz) near pin

Key Features

Feature	Design Value
Ultra-low quiescent current	20 µA typical - extends battery life in always-on automotive modules (e.g., body control units)
Configurable power-on reset delay	Two timing options via DT pin (GND or Q) - eliminates need for external RC timing network
Ceramic capacitor support	Stable with ≥470 nF X7R/X5R ceramics - reduces board space and cost vs. tantalum/electrolytic
Reverse current protection	Integrated sink circuit limits Q pin to ≤5.5 V - prevents overvoltage damage to downstream devices
AEC-Q100 qualified	Grade 0 (−40 °C to +150 °C) - validated for engine compartment and transmission control applications

Applications

Body Control Module (BCM)

Engine Control Unit (ECU) Sub-Supply

Use Scenario: Powering CAN transceivers and sensor interface ICs in vehicle door modules with constant battery connection.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic rails and enabling wake-up via RO signal during sleep mode.

Use Value: 20 µA I_Q minimizes parasitic drain; RO assertion at V_Q = 1 V ensures deterministic restart after brownout.

Use Scenario: Providing regulated 5 V to non-critical ECU peripherals (e.g., solenoid drivers, analog sensors) alongside main MCU supply.

IC Role / Device Role / Timing Role: Secondary regulator with independent reset signaling, decoupled from primary power domain.

Use Value: DT pin configuration allows synchronized or staggered reset timing relative to main controller supply.

Transmission Control Module (TCM)

Advanced Driver Assistance Systems (ADAS) Camera Power

Use Scenario: Supplying 5 V to gear position sensors and shift solenoid logic in high-temperature transmission housings.

IC Role / Device Role / Timing Role: High-temp-stable LDO with overtemperature shutdown and current limiting for fault-tolerant operation.

Use Value: 150 °C max junction rating and thermal shutdown with hysteresis prevent latch-up during oil-cooled operation.

Use Scenario: Powering image signal processors and serializer ICs in rear-view or surround-view camera modules.

IC Role / Device Role / Timing Role: Low-noise–tolerant supply where moderate PSRR (60 dB @ 100 Hz) suffices for DC-coupled video paths.

Use Value: Ceramic capacitor compatibility simplifies layout in space-constrained camera PCBs; RO pin enables system-level health monitoring.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 5 V automotive LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV73350PDBVR	Lower I_Q (4.5 µA), lower max I_OUT (300 mA), no integrated reset, not AEC-Q100 qualified	Suitable for non-automotive industrial or consumer modules requiring ultra-low I_Q but no reset or high-temp operation	Select when reset signaling and −40 °C to +150 °C operation are unnecessary and cost is prioritized
TLE4271-2D	Higher I_Q (150 µA), same 5 V ±2%, integrated watchdog, AEC-Q100 Grade 0, TO-252-5 package	Used where system-level fault detection (watchdog timeout) is required alongside regulation	Select when watchdog functionality is needed and higher quiescent current is acceptable

Compared with TLV73350PDBVR and TLE4271-2D, the TLE7270D uniquely balances ultra-low I_Q, integrated POR/UVLO reset, AEC-Q100 Grade 0 qualification, and ceramic capacitor compatibility - making it optimal for cost-sensitive, high-reliability automotive sub-supplies where reset coordination matters.

Availability

TLE7270D is available at Aetrix Electronics and suitable for body control modules, engine control units, transmission control modules, and ADAS camera power supplies requiring stable component supply across extended automotive lifecycles.

Supply support for TLE7270D 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.

The TLE7270D belongs to Infineon's TLE72xx automotive LDO family, engineered specifically for robust, low-power microcontroller supply in engine bay and chassis applications where thermal resilience and battery drain minimization are critical.

FAQ

What is the minimum output capacitance required for stable operation?

The TLE7270D requires a minimum output capacitance of 470 nF with ESR ≤10 Ω at 10 kHz. This value accounts for worst-case ±30% capacitor tolerance and ensures phase margin >45° across temperature and load. X7R or X5R ceramic types are recommended due to stable capacitance and low ESR.

How does the DT pin affect reset timing?

Connecting DT to GND selects a short power-on reset delay (~10 ms), while connecting DT to Q selects a long delay (~100 ms). This dual-mode timing eliminates external RC components and allows synchronization with other system rails or accommodates slow-rising input voltages in cold-cranking conditions.

Can the TLE7270D be used with input voltages below 6 V?

No - the functional input voltage range starts at 5.5 V. Operation below this threshold is outside specification; the device will not regulate, and RO may assert unpredictably. For 3.3 V or lower input systems, a different regulator family (e.g., TLE4274) must be selected.

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

An external pull-up resistor is optional. The RO pin has an internal pull-up; however, if stronger drive or noise immunity is needed, a ≥10 kΩ resistor to Q is permitted. Leaving RO unconnected is acceptable if reset signaling is unused, as the internal pull-up maintains high-Z default state.

TLE7270D Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: TO-252-5, DPAK (4 Leads + Tab), TO-252AD

Packaging:: Bulk

Product Status:: Active

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):: 40 µA

Current - Supply (Max):: -

PSRR:: 60dB (100Hz)

Control Features:: Delay, Reset

Protection Features:: Over Current, Over Temperature, Short Circuit

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: P-TO252-5-1

TLE7270D FAQ

1.How can I place an order for TLE7270D through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE7270D 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 TLE7270D reliable?

The price and inventory of TLE7270D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE7270D is usually 5 days.

3.What payment methods are accepted for TLE7270D?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE7270D transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE7270D?

TLE7270D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE7270D 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 TLE7270D?

For technical support, including TLE7270D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE7270D requirements.

6.How does Aetrix verify that TLE7270D is sourced from the original manufacturer or authorized distributors?

All TLE7270D 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 TLE7270D meets industry standards.

7.What is the process for return or replacement of TLE7270D?

All TLE7270D units undergo pre-shipment inspection (PSI). If there is an issue with TLE7270D, 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 TLE7270D part is unused and in its original packaging.

Return procedure for TLE7270D:

1.Submit a request within 90 days.

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

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