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

Infineon Technologies IFX54211MBV33HTSA1

Name: IFX54211MBV33HTSA1
Brand: Infineon Technologies
SKU: IFX54211MBV33HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: IFX54211MBV33HTSA1

Manufacturer:: Infineon Technologies

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

Package:: 6-SMD (5 Leads), Gull Wing

Datasheet:: IFX54211MBV33HTSA1.pdf

Description:: IC REG LINEAR 3.3V 150MA SCT595

Quantity:: RFQ Add To RFQ list

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Inventory:2,398

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Product details

Overview

IFX54211MBV33HTSA1 from Infineon Technologies is a fixed-output, high-PSRR low-dropout linear voltage regulator delivering 3.3 V at up to 150 mA with ±3 % accuracy, 290 mV typical dropout at full load, 63 dB PSRR at 10 kHz, and 50 µA quiescent current. It operates across 2.7–18 V input range, features enable control, thermal shutdown, short-circuit protection, and is qualified for industrial environments (−40 °C to +125 °C).

For engineers reviewing the IFX54211MBV33HTSA1 datasheet, IFX54211MBV33HTSA1 pinout, IFX54211MBV33HTSA1 application, or IFX54211MBV33HTSA1 equivalent, key selection criteria include ultra-low standby current for always-on systems, stability with 1 µF ceramic output capacitors, PG-SCT595 thermal performance on PCB heatsink areas, and compatibility with preregulator stages in multi-rail power architectures.

Technical Context

The IFX54211MBV33HTSA1 uses a PMOS pass transistor architecture enabling low quiescent current across load range and minimal dropout voltage. Its internal bandgap reference and error amplifier drive the pass element via a dedicated driver stage, with feedback taken directly from the OUT pin through an internal resistor divider.

Protection logic integrates independent current-limit detection and junction temperature sensing-triggering foldback current limiting during overload and hard shutdown above 150 °C. The EN pin controls NMOS-based input to the internal supply, achieving 0.01 µA shutdown current without external pull-down.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±3 % - stable rail for MCU I/O, sensors, and communication interfaces requiring tight regulation tolerance.
Max Output Current	150 mA - sufficient for powering small microcontrollers, RF transceivers, or analog front-ends without external boost.
Dropout Voltage	290 mV typ. at 150 mA - enables operation down to VIN = 3.59 V while maintaining regulated 3.3 V output.
PSRR	63 dB typ. at 10 kHz - suppresses switching noise from upstream DC/DC converters in mixed-signal systems.
Quiescent Current	50 µA typ. - minimizes battery drain in always-on monitoring nodes or backup power domains.
Shutdown Current	0.01 µA typ. - supports deep-sleep modes where system-level power gating demands sub-100 nA leakage.
Input Voltage Range	2.7 V to 18 V - accommodates wide-input industrial supplies, automotive battery transients, and unregulated wall adapters.
Operating Temp	−40 °C to +125 °C - rated for under-hood, factory automation, and outdoor embedded deployments.

Pinout & Package

IFX54211MBV33HTSA1 is housed in a thermally enhanced PG-SCT595 surface-mount package (5-pin, 2.1 × 2.3 × 0.9 mm), featuring dual GND pins (2 and 5) for improved heat dissipation and low-inductance grounding. Soldering both GND pins to a PCB heatsink area reduces R_thJA to 103 K/W (600 mm² copper area).

Pin/Terminal	Circuit Role	Design Meaning
1 IN	Power Input	Accepts 2.7–18 V supply; requires local 220 nF decoupling capacitor to suppress line noise and transient spikes.
2 GND	Ground Reference	Primary ground connection; internally tied to Pin 5; must be soldered to thermal pad/heatsink for safe 150 mA operation.
3 OUT	Regulated Output	Delivers 3.3 V ±3 %; stable with ≥1 µF ceramic capacitor and ESR ≤10 Ω at 10 kHz across full temperature range.
4 EN	Enable Control	Active-high logic input; drives internal supply; floating or tied to IN enables device; pulled low disables output and reduces current to 0.01 µA.
5 GND	Ground Reference	Secondary ground terminal; electrically identical to Pin 2; mandatory solder connection for thermal and electrical integrity.

Key Features

Feature	Design Value
PMOS Pass Transistor	Enables ultra-low quiescent current (50 µA) that remains stable across 0–150 mA load, unlike NMOS LDOs whose I_Q rises with load.
Stability with Small C_OUT	Guaranteed loop stability using only 1 µF ceramic output capacitor - eliminates need for large tantalum or aluminum electrolytics in space-constrained designs.
Dual-GND Thermal Design	Two dedicated GND pins (2 and 5) reduce thermal resistance by >25 % versus single-GND packages of comparable size, supporting continuous 150 mA at +125 °C ambient.
Integrated Fault Protection	Combines foldback current limiting (prevents thermal runaway during short circuit) and automatic thermal shutdown (restarts after cooldown), eliminating need for external reset circuitry.
High PSRR Bandwidth	63 dB rejection maintained up to 10 kHz - effectively filters ripple from 500 kHz–2 MHz DC/DC converters operating at light-to-moderate loads.

Applications

Industrial Sensor Node

Automotive Body Control Module

Use Scenario: Battery-powered temperature/humidity sensor transmitting data every 5 minutes via BLE or LoRaWAN.

IC Role / Device Role / Timing Role: Primary 3.3 V supply for MCU, radio, and analog signal chain; enabled only during active measurement and transmission cycles.

Use Value: 0.01 µA shutdown current extends 2×AA battery life beyond 10 years; 1 µF C_OUT enables miniaturized PCB layout.

Use Scenario: Powering CAN transceiver, door lock actuator logic, and interior lighting drivers in non-safety-critical zones.

IC Role / Device Role / Timing Role: Post-regulator for stabilized 3.3 V domain downstream of 12 V automotive DC/DC converter.

Use Value: 63 dB PSRR at 10 kHz attenuates switching noise from primary converter; −40 °C to +125 °C rating meets AEC-Q100 Grade 2 ambient requirements.

Programmable Logic Controller I/O Module

Medical Patient Monitor Auxiliary Rail

Use Scenario: Providing isolated 3.3 V for digital isolators and ADC drivers in modular PLC backplane slots.

IC Role / Device Role / Timing Role: Local point-of-load regulator for noise-sensitive analog acquisition circuitry adjacent to high-current digital outputs.

Use Value: Dual-GND thermal design sustains 150 mA output at full ambient temperature without derating; RoHS-compliant green packaging satisfies industrial compliance mandates.

Use Scenario: Supplying low-noise 3.3 V to ECG front-end amplifiers and SPI flash memory in portable diagnostic devices.

IC Role / Device Role / Timing Role: Clean auxiliary rail decoupled from main 5 V system supply to prevent coupling of digital switching artifacts into analog signal path.

Use Value: 290 mV dropout allows operation from partially discharged Li-ion cells (down to 3.59 V); 50 µA I_Q supports extended battery runtime during standby.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLD1113-33	3.3 V, 150 mA, 200 mV dropout, 60 µA I_Q, SO-8 package (larger footprint, higher R_thJA)	Lacks enable pin; no shutdown mode - unsuitable for ultra-low-power wake-up architectures.	Select when board space permits larger package and enable functionality is unnecessary.
MCP1703T-3302E/MB	3.3 V, 250 mA, 600 mV dropout, 4 µA I_Q, SOT-23-5 - lower I_Q but higher dropout and reduced PSRR (55 dB @ 10 kHz)	Higher dropout limits usable input range; lower PSRR compromises noise-sensitive analog rails.	Select only for battery-powered applications prioritizing lowest possible I_Q over noise rejection and input headroom.

Compared with TLD1113-33 and MCP1703T-3302E/MB, IFX54211MBV33HTSA1 uniquely balances ultra-low shutdown current (0.01 µA), high PSRR (63 dB), and low dropout (290 mV) in a thermally optimized 5-pin package - making it optimal for industrial and automotive subsystems demanding simultaneous efficiency, noise immunity, and thermal robustness.

Availability

IFX54211MBV33HTSA1 is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive body control modules, programmable logic controller I/O modules, and medical patient monitor auxiliary rails requiring stable component supply, long-term lifecycle support, and traceable green sourcing.

Supply support for IFX54211MBV33HTSA1 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 ISO 9001 and IATF 16949 certified quality systems.

The IFX542xx series is designed for high-reliability industrial and automotive auxiliary power regulation - emphasizing ultra-low standby current, thermal resilience, and noise immunity in compact surface-mount packages.

FAQ

What is the minimum output capacitance required for stable operation?

The IFX54211MBV33HTSA1 requires a minimum 1 µF ceramic output capacitor with ESR ≤10 Ω at 10 kHz for guaranteed stability across −40 °C to +125 °C. This specification holds even with worst-case ±30 % capacitance tolerance and eliminates need for larger or higher-ESR alternatives in most applications.

How does the dual-GND pin configuration improve thermal performance?

Pins 2 and 5 are internally connected GND terminals designed for simultaneous soldering to a shared PCB heatsink area. This configuration reduces junction-to-ambient thermal resistance by up to 35 % compared to single-GND equivalents - enabling continuous 150 mA output at +125 °C ambient when using ≥600 mm² copper area.

Can the EN pin be left floating in always-on applications?

No - the EN pin must not be left floating. For always-on operation, tie EN directly to IN. Floating EN may cause undefined logic states, intermittent enable/disable behavior, or increased susceptibility to noise-induced toggling, potentially leading to unstable output or unexpected shutdown.

Does this regulator support reverse polarity or input overvoltage protection?

No - IFX54211MBV33HTSA1 has no integrated reverse-polarity or input overvoltage protection. Absolute maximum input voltage is 20 V; operation above 18 V is outside functional range. External protection (e.g., TVS diode, series fuse, or ideal diode controller) must be added if system-level fault conditions exceed these limits.

IFX54211MBV33HTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: 6-SMD (5 Leads), Gull Wing

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 1

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.57V @ 150mA

Current - Output:: 150mA

Current - Quiescent (Iq):: 100 µA

Current - Supply (Max):: 200 µA

PSRR:: 63dB (10kHz)

Control Features:: Enable

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

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SCT595-5-1

IFX54211MBV33HTSA1 FAQ

1.How can I place an order for IFX54211MBV33HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for IFX54211MBV33HTSA1 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 IFX54211MBV33HTSA1 reliable?

The price and inventory of IFX54211MBV33HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for IFX54211MBV33HTSA1 is usually 5 days.

3.What payment methods are accepted for IFX54211MBV33HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for IFX54211MBV33HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for IFX54211MBV33HTSA1?

IFX54211MBV33HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your IFX54211MBV33HTSA1 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 IFX54211MBV33HTSA1?

For technical support, including IFX54211MBV33HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your IFX54211MBV33HTSA1 requirements.

6.How does Aetrix verify that IFX54211MBV33HTSA1 is sourced from the original manufacturer or authorized distributors?

All IFX54211MBV33HTSA1 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 IFX54211MBV33HTSA1 meets industry standards.

7.What is the process for return or replacement of IFX54211MBV33HTSA1?

All IFX54211MBV33HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with IFX54211MBV33HTSA1, 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 IFX54211MBV33HTSA1 part is unused and in its original packaging.

Return procedure for IFX54211MBV33HTSA1:

1.Submit a request within 90 days.

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

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