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

Infineon Technologies TLE4299GMV33

Name: TLE4299GMV33
Brand: Infineon Technologies
SKU: TLE4299GMV33
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLE4299GMV33

Manufacturer:: Infineon Technologies

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

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

Datasheet:: TLE4299GMV33.pdf

Description:: IC REG LINEAR FIXED POS LDO REG

Quantity:: RFQ Add To RFQ list

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Product details

Overview

TLE4299GMV33 from Infineon is a monolithic low-drop fixed 3.3 V linear voltage regulator delivering up to 150 mA output current, featuring an inhibit input (INH), reset output (RO), sense input (SI), and adjustable reset threshold via RADJ pin. It operates across 4.4 V to 45 V input range, supports automotive ambient temperatures (−40 °C to +150 °C), and provides early warning and undervoltage reset functions for microcontroller systems in engine control units.

For engineers reviewing the TLE4299GMV33 datasheet, TLE4299GMV33 pinout, TLE4299GMV33 application, or TLE4299GMV33 equivalent, key selection criteria include its 1 µA off-state quiescent current, reset delay programmability via external capacitor, SI-based early warning capability, and AEC-Q100 qualification for automotive power supply integrity.

Technical Context

The TLE4299GMV33 implements a PNP-based linear regulation architecture with internal bandgap reference and current-saturation control, enabling stable 3.3 V ±2% output under wide input voltage transients. Its reset logic monitors VQ down to 1 V and asserts open-collector RO low when output drops below user-adjustable threshold set by RADJ and external resistor divider on SI.

Early warning functionality uses hysteresis on SI input: SO pulls low when SI falls below V_SI,low, and returns high only after SI rises above V_SI,high. The inhibit function disables regulation entirely, reducing quiescent current to <1 µA - critical for ECU sleep-mode compliance in 12 V automotive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±2% - ensures stable MCU core/logic supply within automotive voltage tolerance bands
Max Output Current	150 mA - sufficient for small microcontrollers, CAN transceivers, and sensor interfaces
Input Voltage Range	4.4 V to 45 V - supports cold-crank (4.4 V) and load-dump (45 V) conditions per ISO 7637-2
Quiescent Current (ON)	Typ. 150 µA - enables always-on monitoring without excessive battery drain
Off-State Current	<1 µA with INH = low - meets OEM requirements for ECU standby power budgets
Reset Threshold Range	Adjustable from 2.2 V to 3.1 V via RADJ - allows precise match to MCU reset voltage spec
Operating Junction Temp	−40 °C to +150 °C - qualified for under-hood placement per AEC-Q100 Grade 0

Pinout & Package

Package: PG-DSO-14 (14-pin exposed pad SOIC), RoHS-compliant, thermally enhanced for automotive under-hood mounting.

Pin/Terminal	Circuit Role	Design Meaning
1 RADJ	Reset threshold adjust input	Connects to resistor divider on SI to set V_SI,low/V_SI,high; defines reset activation point
2 D	Reset delay capacitor node	External capacitor to GND sets reset assertion/deassertion timing (typ. 1–100 ms)
3,4,5,10,11,12 GND	Ground terminals	Multiple low-inductance GND paths reduce noise coupling and improve thermal dissipation
6 INH	Inhibit control input	High = regulator enabled; low = shutdown with <1 µA I_Q; pulled up internally if unused
7 RO	Open-collector reset output	Pulled up to Q via 20 kΩ; sinks current when V_Q drops below threshold - drives MCU /RESET pin
8 SO	Open-collector sense output	Asserts low during early warning; requires external pull-up for MCU interrupt or status flag
9 Q	Regulated 3.3 V output	Requires 22 µF ceramic output cap with ESR 0.4–3.7 Ω for stability and transient response
13 I	Main input voltage	Connect ceramic bypass cap directly at pin; supports 45 V transients without clamping
14 SI	Sense input for early warning	Monitors battery or rail voltage; hysteresis prevents chatter during slow voltage decay

Key Features

Feature	Design Value
Adjustable Reset Threshold	Set via external resistor divider on SI and RADJ - enables precise alignment with target MCU reset spec
Programmable Reset Delay	Determined by capacitor on D pin - avoids false resets during short dips (e.g., fuel injector switching)
Early Warning Output (SO)	Hysteresis-enabled low-active signal - gives MCU time to save state before full reset occurs
AEC-Q100 Qualified	Grade 0 (−40 °C to +150 °C) - validated for direct engine compartment mounting without derating
Inhibit-Controlled Shutdown	INH-driven disable reduces I_Q to <1 µA - satisfies OEM sleep-mode current limits for body control modules

Applications

Engine Control Unit (ECU) Power Supply

Body Control Module (BCM) Standby Rail

Use Scenario: Supplies 3.3 V to MCU, CAN controller, and analog sensors in gasoline/diesel engine ECUs exposed to cranking and load-dump events.

IC Role / Device Role / Timing Role: Primary LDO regulator with integrated reset and early warning - replaces discrete supervisor + LDO solution.

Use Value: Maintains regulated output down to 1 V input and asserts reset before MCU brownout, preventing corrupted flash writes during voltage collapse.

Use Scenario: Powers real-time clock, door lock logic, and LIN transceivers in BCM during vehicle sleep mode.

IC Role / Device Role / Timing Role: Always-on regulator with INH-controlled shutdown - enables zero-power wake-on-LIN while preserving battery life.

Use Value: Achieves <1 µA off-state current and delivers clean 3.3 V upon wake event, eliminating need for secondary low-I_Q supervisor IC.

Advanced Driver Assistance System (ADAS) Camera Module

Electric Power Steering (EPS) Sensor Interface

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

IC Role / Device Role / Timing Role: High-temp tolerant LDO with early warning - detects battery sag before camera freeze or frame loss.

Use Value: SO output triggers firmware-initiated graceful shutdown, avoiding video artifacts caused by abrupt power loss.

Use Scenario: Powers torque sensor signal conditioning and SPI interface in EPS motor control units.

IC Role / Device Role / Timing Role: Reset-capable regulator with programmable delay - ensures deterministic MCU restart after voltage recovery post-load dump.

Use Value: Adjustable reset timing prevents spurious restarts during transient overvoltage, improving steering system functional safety compliance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE4269G	No inhibit function; fixed 3.3 V output; same PG-DSO-8 package but 8-pin vs. 14-pin	Lacks INH control and early warning; limited to always-on applications	Select when system does not require sleep-mode current reduction or SI monitoring
TLV73333PDBVR	Non-automotive grade; 300 mA output; no reset/early warning; SOT-23-5 package	Not AEC-Q100 qualified; lacks automotive protection features (reverse polarity, load dump)	Use only in non-safety-critical, non-under-hood consumer or industrial designs

Compared with TLE4299GMV33, TLE4269G offers simpler integration where inhibit and early warning are unnecessary, while TLV73333PDBVR provides higher current in compact packaging but omits automotive-grade supervision and protection - making TLE4299GMV33 the sole choice for AEC-Q100-compliant reset-aware ECU power rails.

Availability

TLE4299GMV33 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera systems, and electric power steering sensor interfaces requiring stable component supply across automotive production lifecycles.

Supply support for TLE4299GMV33 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 qualification infrastructure.

The OPTIREG™ Linear product line delivers AEC-Q100-qualified voltage regulators designed specifically for automotive subsystems requiring robustness against load dump, reverse battery, and extreme temperature operation.

FAQ

What is the minimum input voltage required for regulation?

The TLE4299GMV33 maintains regulation down to 4.4 V input under full 150 mA load, with dropout voltage ≤300 mV at 100 mA. Below 4.4 V, output follows input linearly, but reset functionality remains active down to V_I = 1 V - enabling reliable brownout detection even during severe cranking.

How is the reset delay time calculated?

Reset delay is set by capacitor C_D connected between pin D and GND. Typical delay ranges from 1 ms (10 nF) to 100 ms (1 µF), with linear relationship: t_delay ≈ C_D × 100 kΩ. The internal constant-current source charges/discharges C_D to define assertion and release thresholds V_ST and V_DT.

Can the SI pin monitor voltages other than battery?

Yes - SI accepts any DC voltage within −0.3 V to 45 V. Using an external resistor divider, it can monitor MCU core voltage, sensor supply rails, or isolated auxiliary supplies. Hysteresis (typically 100 mV) prevents oscillation during slow voltage transitions, making it suitable for battery state-of-charge estimation.

Is thermal derating required at 150 °C junction temperature?

No derating is needed - the device is fully specified and tested at T_j = 150 °C per AEC-Q100 Grade 0. With PG-DSO-14's R_thJA = 70 K/W (300 mm² copper), maximum continuous power dissipation at 150 °C ambient is ~1.1 W - sufficient for 150 mA at 3.3 V output with typical 12 V input (P_D ≈ 1.3 W).

TLE4299GMV33 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Bulk

Product Status:: Active

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:: 150mA

Current - Quiescent (Iq):: 105 µA

Current - Supply (Max):: -

PSRR:: 66dB (100Hz)

Control Features:: Inhibit, 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:: PG-DSO-14

TLE4299GMV33 FAQ

1.How can I place an order for TLE4299GMV33 through Aetrix?

Please submit a Request for Quotation (RFQ) for TLE4299GMV33 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 TLE4299GMV33 reliable?

The price and inventory of TLE4299GMV33 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4299GMV33 is usually 5 days.

3.What payment methods are accepted for TLE4299GMV33?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4299GMV33 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLE4299GMV33?

TLE4299GMV33 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLE4299GMV33 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 TLE4299GMV33?

For technical support, including TLE4299GMV33 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4299GMV33 requirements.

6.How does Aetrix verify that TLE4299GMV33 is sourced from the original manufacturer or authorized distributors?

All TLE4299GMV33 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 TLE4299GMV33 meets industry standards.

7.What is the process for return or replacement of TLE4299GMV33?

All TLE4299GMV33 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4299GMV33, 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 TLE4299GMV33 part is unused and in its original packaging.

Return procedure for TLE4299GMV33:

1.Submit a request within 90 days.

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

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