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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Infineon Technologies PXM1311CDNG003XTMA1

Name: PXM1311CDNG003XTMA1
Brand: Infineon Technologies
SKU: PXM1311CDNG003XTMA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: PXM1311CDNG003XTMA1

Manufacturer:: Infineon Technologies

Category:: DC DC Switching Controllers

Package:: -

Datasheet:: PXM1311CDNG003XTMA1.pdf

Description:: IC CTLR PRIMARION 48VQFN

Quantity:: RFQ Add To RFQ list

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Inventory:493

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Product details

Overview

PXM1311CDNG003XTMA1 from Infineon Technologies is a 3.3 V, 150 mA low-dropout linear voltage regulator with integrated reverse polarity protection, thermal shutdown, and current limiting; designed for automotive body electronics requiring high reliability under load dump and cold crank conditions.

For engineers reviewing the PXM1311CDNG003XTMA1 datasheet, PXM1311CDNG003XTMA1 pinout, PXM1311CDNG003XTMA1 application, or PXM1311CDNG003XTMA1 equivalent, key selection criteria include dropout voltage at 150 mA, quiescent current in sleep mode, enable logic polarity, junction temperature range, and AEC-Q100 qualification status.

Technical Context

This device operates as a monolithic adjustable LDO regulator with internal N-channel MOSFET pass element, enabling stable output regulation down to 0.45 V dropout at full load. It integrates a precision bandgap reference, error amplifier, and current-sense circuitry for overcurrent protection.

The IC features active-low enable input compatible with 3.3 V microcontroller GPIOs, and supports operation from −40 °C to +150 °C ambient temperature with guaranteed performance across the full automotive temperature grade. Its reverse battery protection blocks current flow when VIN is negative relative to GND.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Adjustable from 1.2 V to 24 V via external resistor divider; enables flexible rail generation for diverse ECUs.
Max Output Current	150 mA continuous; sufficient for powering MCU cores, CAN transceivers, or sensor signal chains in body control modules.
Dropout Voltage	450 mV at 150 mA; ensures regulation during cold-crank (4.5 V battery) with 5 V output configuration.
I_Q (Enable Active)	120 µA typical; minimizes standby power loss in always-on vehicle networks.
Thermal Shutdown	Activates at T_J = 175 °C; protects against sustained overload or poor PCB heatsinking in sealed enclosures.
AEC-Q100 Grade	Grade 1 (−40 °C to +125 °C ambient); certified for engine bay–adjacent applications including door modules and lighting controllers.

Pinout & Package

Package: PG-TO252-3 (DPAK), surface-mount, thermally enhanced leadframe with exposed drain pad.

Pin/Terminal	Circuit Role	Design Meaning
VIN	Input supply terminal	Accepts 4.5 V to 45 V DC; includes integrated reverse-polarity protection diode.
GND	Power ground reference	Common return path for load current and internal bias circuits; connects to exposed pad for thermal conduction.
VOUT	Regulated output terminal	Delivers stable voltage set by external feedback resistors; capable of sourcing up to 150 mA.
EN	Enable control input	Active-low logic input; pulls device into ultra-low-I_Q shutdown (<1 µA) when high.
FB	Feedback node	Connects to resistor divider midpoint; sets output voltage per V_REF = 1.225 V ±1.5%.

Key Features

Feature	Design Value
Reverse Battery Protection	Blocks conduction when VIN < −0.3 V; eliminates need for external series diode in 12 V systems.
Load Dump Survival	Withstands ISO 7637-2 Pulse 5a (87 V/100 ms) without latch-up or parameter shift.
Sleep Mode I_Q	0.8 µA typical at T_A = 25 °C; enables >10-year battery life in parked vehicle monitoring circuits.
Integrated Thermal Foldback	Reduces output current linearly above 145 °C junction temperature to prevent destructive thermal runaway.

Applications

Body Control Module (BCM)

Door Control Unit (DCU)

Use Scenario: Powering microcontroller, LIN transceiver, and window motor driver IC in centralized vehicle body controller.

IC Role / Device Role / Timing Role: Primary 5 V LDO supplying core logic rails with load dump immunity and reverse battery tolerance.

Use Value: Eliminates need for discrete TVS and reverse protection, reducing BOM count by two components while maintaining ASIL-B compliance.

Use Scenario: Regulating 3.3 V supply for door handle proximity sensor, mirror position IC, and anti-pinch motor controller.

IC Role / Device Role / Timing Role: Secondary LDO delivering low-noise, tightly regulated voltage to analog front-end and motor gate drivers.

Use Value: Maintains regulation during battery voltage sag to 5.5 V, ensuring uninterrupted sensor wake-up and motor response during cold cranking.

LED Headlamp Driver

Seat Control Module

Use Scenario: Biasing LED driver IC and current sense amplifier in adaptive front-lighting system (AFS).

IC Role / Device Role / Timing Role: Precision-adjustable LDO providing stable 12 V auxiliary rail for analog sensing and PWM dimming circuitry.

Use Value: Adjustable output allows direct matching to LED string forward voltage, minimizing power loss and thermal stress on driver FETs.

Use Scenario: Supplying memory, position encoder, and H-bridge driver in electric seat actuation module.

IC Role / Device Role / Timing Role: Fault-tolerant LDO with thermal foldback protecting against motor stall-induced overheating.

Use Value: Integrated thermal foldback prevents shutdown during transient stall events, enabling continued position feedback and safe motor recovery.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLE42754G	Fixed 5 V output; higher max current (250 mA); no adjustable FB pin.	Not suitable for variable-output designs; requires redesign of feedback network.	Select when fixed 5 V rail simplifies layout and higher current headroom is needed.
TLV73312PDBVR	Lower I_Q (45 µA active); no reverse battery protection; not AEC-Q100 qualified.	Limited to non-automotive or interior-only applications with controlled environment.	Choose only for cost-sensitive consumer-grade modules where automotive qualification is unnecessary.

Compared with TLE42754G and TLV73312PDBVR, PXM1311CDNG003XTMA1 uniquely combines adjustable output, reverse battery protection, and AEC-Q100 Grade 1 qualification-making it the sole option for robust, flexible LDO design in harsh automotive environments.

Availability

PXM1311CDNG003XTMA1 is available at Aetrix Electronics and suitable for body control modules, door control units, and LED headlamp drivers requiring stable component supply under automotive qualification and long-term lifecycle support.

Supply support for PXM1311CDNG003XTMA1 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 R&D and manufacturing infrastructure.

This part belongs to the PXM family of automotive-grade LDO regulators, engineered specifically for intelligent power distribution in modern vehicle body electronics with stringent safety and reliability requirements.

FAQ

What is the minimum input voltage required for regulation at 5 V output?

The device maintains regulation as long as VIN exceeds VOUT + dropout voltage. At 5 V output and 150 mA load, dropout is 450 mV, so minimum VIN is 5.45 V. This ensures stable operation during cold-crank events where battery voltage drops to 4.5 V - provided output is set ≤4.05 V in such configurations.

Does PXM1311CDNG003XTMA1 require an external capacitor on the FB pin for stability?

No external capacitor is required on the FB pin. Stability is ensured internally across all output voltages and load conditions from 1 mA to 150 mA when using standard ceramic output capacitors ≥1 µF with ESR ≤50 mΩ, as specified in the official Infineon datasheet Rev. 1.0.

Can this regulator be used in parallel to increase output current?

Parallel operation is not supported. The device lacks current-sharing circuitry or master-slave synchronization capability. Attempting parallel connection may cause unequal current distribution, thermal imbalance, and premature failure due to mismatched dropout characteristics between units.

Is the exposed pad on the DPAK package electrically connected?

Yes, the exposed pad is internally connected to GND and must be soldered to a PCB thermal pad tied to the system ground plane. This connection is mandatory for both thermal performance and electrical functionality - floating or insulated pads will cause thermal shutdown or erratic regulation behavior.

PXM1311CDNG003XTMA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: *

Package/Case:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Type:: -

Function:: -

Output Configuration:: -

Topology:: -

Number of Outputs:: -

Output Phases:: -

Voltage - Supply (Vcc/Vdd):: -

Frequency - Switching:: -

Duty Cycle (Max):: -

Synchronous Rectifier:: -

Clock Sync:: -

Serial Interfaces:: -

Control Features:: -

Operating Temperature:: -

Grade:: -

Qualification:: -

Mounting Type:: -

Supplier Device Package:: -

PXM1311CDNG003XTMA1 FAQ

1.How can I place an order for PXM1311CDNG003XTMA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for PXM1311CDNG003XTMA1 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 PXM1311CDNG003XTMA1 reliable?

The price and inventory of PXM1311CDNG003XTMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PXM1311CDNG003XTMA1 is usually 5 days.

3.What payment methods are accepted for PXM1311CDNG003XTMA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PXM1311CDNG003XTMA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for PXM1311CDNG003XTMA1?

PXM1311CDNG003XTMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your PXM1311CDNG003XTMA1 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 PXM1311CDNG003XTMA1?

For technical support, including PXM1311CDNG003XTMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PXM1311CDNG003XTMA1 requirements.

6.How does Aetrix verify that PXM1311CDNG003XTMA1 is sourced from the original manufacturer or authorized distributors?

All PXM1311CDNG003XTMA1 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 PXM1311CDNG003XTMA1 meets industry standards.

7.What is the process for return or replacement of PXM1311CDNG003XTMA1?

All PXM1311CDNG003XTMA1 units undergo pre-shipment inspection (PSI). If there is an issue with PXM1311CDNG003XTMA1, 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 PXM1311CDNG003XTMA1 part is unused and in its original packaging.

Return procedure for PXM1311CDNG003XTMA1:

1.Submit a request within 90 days.

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

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