My Inquiry
My Account
Infineon Technologies TLF42772ELXUMA1
- Part No.:
- TLF42772ELXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLF42772ELXUMA1.pdf
- Description:
- IC REG LIN POS ADJ 300MA 14SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,358
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLF42772ELXUMA1 from Infineon Technologies is a monolithic low-dropout linear voltage regulator with integrated current monitor, adjustable output voltage (5–12 V), 300 mA output current capability, and automotive-grade protection features including overvoltage, overtemperature, and reverse-polarity protection. It serves as a dedicated supply for active antennas in car infotainment systems (e.g., DAB, FM/AM, SiriusXM).
For engineers reviewing the TLF42772ELXUMA1 datasheet, TLF42772ELXUMA1 pinout, TLF42772ELXUMA1 application, or TLF42772ELXUMA1 equivalent, this device supports precise load monitoring via its CSO pin, enables system-level fault diagnosis through ST status signaling, and delivers stable regulation across wide input (up to 40 V) and junction temperature (−40°C to +150°C) ranges.
Technical Context
The TLF42772ELXUMA1 employs a PNP pass transistor architecture with internal bandgap reference and feedback loop controlling output voltage via external ADJ pin voltage divider. Its current-sense function provides real-time analog current monitoring at CSO, while ST offers open-collector digital fault indication (e.g., overvoltage, thermal shutdown).
Protection logic integrates adjustable output-current limitation, reverse-polarity protection, short-circuit tolerance, and thermal shutdown with hysteresis. The IC operates within AEC-Q100 Grade 0 qualification and supports enable-controlled power sequencing via EN pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage range | 5 V to 12 V, set by external resistor divider on ADJ pin - enables flexible supply matching for diverse antenna modules. |
| Max output current | 300 mA continuous - sufficient for powering multi-band active antennas without external boost stages. |
| Input voltage range | VI = VQ + Vdr to 40 V - supports direct battery connection (12 V/24 V systems) with headroom for load dump transients. |
| Dropout voltage | Typ. 300 mV at 300 mA - ensures regulation stability even under low VIN–VOUT margin conditions. |
| Current sense accuracy | ±10% full-scale error - enables reliable load diagnostics and system-level current budgeting in safety-critical applications. |
| Junction temperature range | −40°C to +150°C - qualified for under-hood and module-integrated automotive environments per AEC-Q100. |
| Output capacitor requirement | 1 µF ceramic with ESR ≤10 Ω - simplifies layout with minimal external components and eliminates need for tantalum or electrolytic caps. |
Pinout & Package
TLF42772ELXUMA1 is housed in PG-SSOP14-EP (exposed paddle) package, offering enhanced thermal performance in SO8-compatible footprint. The exposed paddle must be soldered to PCB ground plane for optimal thermal dissipation (RthJC = 8 K/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | IC supply input | Primary power input; requires local decoupling capacitor to GND for line noise suppression. |
| 4 (EN) | Enable control | Active-high logic input; ties to I if always-on operation required; enables power sequencing and standby mode. |
| 7 (CSO) | Current-sense output | Analog current monitor output (0–5 V); provides proportional signal for real-time load current measurement and fault detection. |
| 8 (ST) | Status output | Open-collector digital fault indicator; pulls low during overvoltage, overtemperature, or overcurrent events. |
| 10 (GND) | Ground reference | Main signal and power return path; connects to PCB ground plane and exposed paddle. |
| 12 (ADJ) | Voltage feedback adjust | Connects to external resistor divider; sets regulated output voltage via VQ = VREF × (1 + R1/R2). |
| 14 (Q) | Regulated output | Power delivery node; requires ≥1 µF ceramic capacitor to GND with ESR ≤10 Ω for loop stability. |
| PAD | Thermal pad | Exposed copper paddle; must be soldered to large PCB GND area for thermal management and electrical grounding. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current monitor | Provides analog current-proportional output (CSO) enabling real-time load diagnostics without external shunt or amplifier. |
| Adjustable output current limit | Configurable via external resistor on ILIM pin - allows precise protection tuning for different antenna loads. |
| Reverse-polarity protection | Withstands −16 V input without damage - eliminates need for external series diode in battery-connected applications. |
| Stable with 1 µF ceramic output cap | Reduces BOM count and board space; avoids reliability risks associated with electrolytic or tantalum capacitors. |
| AEC-Q100 qualified | Grade 0 (−40°C to +150°C) qualification confirms suitability for permanent battery-connected automotive modules. |
Applications
| FM/AM Active Antenna Supply | DAB Digital Radio Module Supply |
|---|---|
|
Use Scenario: Powering analog-tuned FM/AM active antennas in vehicle head units with direct 12 V battery connection. IC Role / Device Role / Timing Role: Primary LDO regulator providing clean, adjustable 5–6 V supply with reverse-polarity and transient protection. Use Value: Eliminates need for discrete protection diodes and external current sensing, reducing component count by ≥3 parts per antenna channel. |
Use Scenario: Supplying DAB+ tuner modules requiring stable 7–9 V output and diagnostic capability for antenna cable fault detection. IC Role / Device Role / Timing Role: Adjustable LDO with integrated current monitor used for both power delivery and open-circuit/short-circuit diagnostics on antenna feed line. Use Value: Enables software-based antenna health monitoring via CSO analog output, improving field failure diagnostics without added sensors. |
| SiriusXM Satellite Radio Supply | Automotive Camera ECU Power |
|
Use Scenario: Delivering regulated 12 V to SiriusXM receiver modules operating continuously in parked mode with battery backup. IC Role / Device Role / Timing Role: Low-quiescent LDO with EN control and thermal shutdown, supporting always-on functionality with safe power gating. Use Value: Quiescent current <100 µA in shutdown mode extends battery life during vehicle sleep cycles without compromising wake-up responsiveness. |
Use Scenario: Powering image sensor and ISP in rear-view or surround-view camera ECUs mounted near hot zones (e.g., trunk lid, bumper). IC Role / Device Role / Timing Role: High-temperature-rated LDO supplying 5 V to camera SoC with built-in overtemperature shutdown and status reporting. Use Value: Junction temperature monitoring via ST pin triggers system-level thermal throttling before sensor degradation occurs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-dropout linear regulator applications with current monitoring capability.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLE42764GV50 | Fixed 5.0 V output; no ADJ pin; lacks current monitor; lower max input (28 V); same PG-SSOP14-EP package. | Suitable only for fixed-voltage antenna supplies; cannot replace TLF42772ELXUMA1 where adjustable output or current diagnostics are required. | Select when cost-sensitive designs require fixed 5 V and omit diagnostics - not a functional substitute for adjustable or monitored use cases. |
| TLF49492ELXUMA1 | Higher output current (500 mA); no current monitor; includes watchdog timer; wider temp range (−40°C to +175°C); same package. | Better suited for high-power radar or ADAS ECUs needing watchdog supervision but no load current visibility. | Choose for higher-current, safety-critical applications where current monitoring is unnecessary and watchdog functionality adds value. |
Compared with TLE42764GV50 and TLF49492ELXUMA1, the TLF42772ELXUMA1 uniquely combines adjustable output voltage, integrated current monitoring, and automotive-grade protection in a single SSOP-14 package - making it irreplaceable for diagnostic-capable active antenna systems.
Availability
TLF42772ELXUMA1 is available at Aetrix Electronics and suitable for automotive sensor supply, active antenna power, and permanently battery-connected peripheral applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TLF42772ELXUMA1 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 manufacturing and R&D infrastructure.
This device belongs to the OPTIREG™linear family, designed specifically for robust, diagnostic-capable power supply in automotive infotainment and connectivity modules - emphasizing reliability, integration, and functional safety readiness.
FAQ
What is the minimum output capacitance required for stable operation?
The TLF42772ELXUMA1 requires a minimum 1 µF ceramic output capacitor with ESR ≤10 Ω (measured at 10 kHz). This value ensures control-loop stability across all load currents and temperatures. Using smaller or higher-ESR capacitors may cause oscillation or dropout under transient loads.
How does the current-sense output (CSO) relate to actual load current?
The CSO pin delivers an analog voltage proportional to load current: VCSO = ILOAD × RCSO, where RCSO is an internal 1 kΩ resistor (±10%). For example, 300 mA load yields ~3.0 V output. External RC filtering (RCSO = 850–25.5 kΩ, CCSO = 1–4.7 µF) suppresses noise for accurate ADC sampling.
Can the ST pin drive an LED directly for fault indication?
Yes - the ST pin is an open-collector output rated for 20 mA sink current. Connecting a 2.2 kΩ resistor from 5 V to ST enables direct LED indication: LED illuminates when ST pulls low during overvoltage, overtemperature, or overcurrent events. No additional driver circuitry is needed.
Is reverse-polarity protection active during enable-disable transitions?
Yes - reverse-polarity protection remains fully functional regardless of EN pin state. The IC withstands −16 V applied to pin 1 (I) even when disabled, preventing damage during incorrect battery connection or jump-start scenarios in automotive service environments.
TLF42772ELXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- 12V
- Voltage Dropout (Max):
- 0.5V @ 200mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- 11 mA
- PSRR:
- 65dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-EP
TLF42772ELXUMA1 FAQ
1.How can I place an order for TLF42772ELXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF42772ELXUMA1 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 TLF42772ELXUMA1 reliable?
The price and inventory of TLF42772ELXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF42772ELXUMA1 is usually 5 days.
3.What payment methods are accepted for TLF42772ELXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF42772ELXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF42772ELXUMA1?
TLF42772ELXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF42772ELXUMA1 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 TLF42772ELXUMA1?
For technical support, including TLF42772ELXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF42772ELXUMA1 requirements.
6.How does Aetrix verify that TLF42772ELXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLF42772ELXUMA1 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 TLF42772ELXUMA1 meets industry standards.
7.What is the process for return or replacement of TLF42772ELXUMA1?
All TLF42772ELXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF42772ELXUMA1, 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 TLF42772ELXUMA1 part is unused and in its original packaging.
Return procedure for TLF42772ELXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLF42772ELXUMA1 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
