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Infineon Technologies TLF42772EPXUMA1
- Part No.:
- TLF42772EPXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- -
- Datasheet:
-
TLF42772EPXUMA1.pdf
- Description:
- OPTIREG LINEAR
- Quantity:
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- Shipping:
Inventory:2,500
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Product details
Overview
TLF42772EPXUMA1 from Infineon Technologies is an automotive-qualified low-dropout linear voltage regulator with integrated current monitor, adjustable output (3–16 V), 400 mA output current capability, and diagnostic status outputs (CSO, ST). It functions as a protected high-side power switch for critical sensor and radar supplies in harsh environments.
For engineers reviewing the TLF42772EPXUMA1 datasheet, TLF42772EPXUMA1 pinout, TLF42772EPXUMA1 application, or TLF42772EPXUMA1 equivalent, key selection criteria include adjustable current limiting, reverse-polarity protection, ceramic capacitor stability (1 µF), AEC-Q100 qualification, and thermal shutdown behavior under load faults.
Technical Context
The TLF42772EPXUMA1 integrates a precision bandgap reference, adjustable LDO pass element, linear current monitor with external resistor scaling (637 Ω to 25.5 kΩ), and dual fault-reporting outputs: CSO (analog current sense + digital fault flag) and ST (open-collector status signal). Its enable input supports system-level power sequencing.
It operates across a 3–40 V input range with dropout voltage < 300 mV at 400 mA, maintains regulation down to –40°C, and shuts down thermally above 150°C junction temperature. The exposed-pad PG-TSDSO-14 package enables thermal resistance as low as 41 K/W with optimized PCB copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | Up to 400 mA - sufficient to power automotive radar MMICs or multi-sensor clusters without external boost stages. |
| Input voltage range | 3 V to 40 V - supports cold-crank (3 V) and load-dump (40 V) transients per ISO 7637-2 without external clamping. |
| Adjustable output | 3 V to 16 V via ADJ pin voltage divider - enables single BOM for multiple sensor supply rails (e.g., 5 V camera, 12 V radar). |
| Current monitor gain | Configurable via RCSO (637 Ω–25.5 kΩ) - provides ±5% full-scale accuracy for real-time load diagnostics and fault logging. |
| Dropout voltage | <300 mV at 400 mA - ensures stable 5 V output even during 5.5 V battery brownout conditions. |
| Thermal shutdown | Activates at Tj ≥ 150°C - protects die integrity during sustained overload or poor heatsinking in confined ECU enclosures. |
| ESD robustness | HBM ±2 kV, CDM ±750 V on corner pins - meets automotive board-level ESD requirements without additional protection devices. |
Pinout & Package
TLF42772EPXUMA1 uses the PG-TSDSO-14 package: a thermally enhanced SO-8 footprint with 14 terminals, including an exposed thermal pad connected to GND. The package supports ≤41 K/W junction-to-ambient thermal resistance when mounted on a 2-layer PCB with 600 mm² copper pour and thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | IC supply input | Primary power input; requires local 100 nF ceramic decoupling to GND to suppress line impedance effects. |
| 4 (EN) | Enable control | Active-high logic input; tie to I if unused - enables system-level sleep/wake coordination without external pull-up. |
| 7 (CSO) | Current-sense output | Analog voltage proportional to load current + digital fault flag; open-drain compatible with 3.3 V/5 V microcontrollers. |
| 8 (ST) | Status output | Open-collector fault indicator - low = overvoltage, overtemperature, or short-circuit detected at Q output. |
| 10 (GND) | Ground reference | Main signal and power return; must be connected to PCB ground plane with low-inductance path. |
| 12 (ADJ) | Voltage adjust | Feedback node for external resistor divider - sets output voltage per VOUT = VREF × (1 + R1/R2), where VREF = 1.25 V. |
| 14 (Q) | Regulator output | High-current regulated output; requires 1 µF ceramic capacitor (ESR ≤10 Ω @ 10 kHz) placed adjacent to pin. |
| Exposed pad | Thermal sink | Internally connected to GND; must be soldered to large PCB copper area for thermal management and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated current monitor | Provides real-time analog current feedback and fault-triggered digital flag on same pin (CSO), eliminating need for external sense amplifier and comparator. |
| Adjustable output current limit | Set via external resistor on ILIM pin - allows precise matching to downstream load surge requirements without overdesigning protection. |
| Reverse-polarity protection | Withstands –16 V on I pin - prevents damage during battery misconnection in service or assembly without external diode. |
| Stable with 1 µF ceramic output cap | Eliminates need for bulk electrolytic capacitors - reduces board space, improves reliability, and avoids aging-related ESR drift. |
| AEC-Q100 qualified | Qualified to Grade 0 (–40°C to +150°C Tj) - validated for engine bay, radar, and ADAS ECU deployments without derating. |
Applications
| Automotive Radar Supply | Camera Module Power |
|---|---|
Use Scenario: Powers 77 GHz radar transceiver ICs in front-end ADAS modules requiring clean, fault-monitored 5 V or 12 V rails. IC Role / Device Role / Timing Role: High-side regulated power switch with real-time current monitoring and thermal fault reporting. Use Value: Enables early detection of antenna mismatch or RF stage failure via CSO current deviation before catastrophic thermal runaway occurs. |
Use Scenario: Supplies image sensor, ISP, and lens actuator in surround-view or driver-monitoring cameras. IC Role / Device Role / Timing Role: Adjustable LDO with reverse-polarity and short-circuit protection for compact, sealed camera housings. Use Value: Maintains stable 3.3 V output during cold-crank (down to 3 V input) while reporting overcurrent events to host MCU for graceful shutdown. |
| Engine Control Sensor Hub | Telematics Control Unit (TCU) |
Use Scenario: Provides regulated power to multiple pressure, temperature, and position sensors in engine management systems. IC Role / Device Role / Timing Role: Multi-sensor supply hub with shared current monitoring and consolidated fault signaling (ST pin). Use Value: Reduces wiring harness complexity by replacing discrete regulators and fault monitors with single-diagnostic-point IC. |
Use Scenario: Powers LTE/V2X modem, GNSS receiver, and secure MCU in vehicle connectivity gateways. IC Role / Device Role / Timing Role: Protected 5 V/3.3 V supply with enable-controlled deep-sleep mode for low-quiescent operation. Use Value: Achieves <10 µA quiescent current in disabled state while retaining fast wake-up (<10 µs) for emergency telematics alerts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO with current monitoring applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLF4935D0EJXUMA1 | Fixed 5 V output; no ADJ pin; identical CSO/ST functionality and thermal specs. | Suitable only where fixed 5 V is acceptable; lacks flexibility for multi-rail designs. | Select when BOM simplification outweighs need for output voltage adjustment. |
| MAX16910ATA+T | Higher 500 mA output; wider 3.5–36 V input; no integrated current monitor - requires external sense resistor + op-amp. | Better for higher-current loads but adds design complexity and board area for diagnostics. | Choose when >400 mA is required and external monitoring circuitry is already present. |
Compared with TLF42772EPXUMA1, TLF4935D0EJXUMA1 trades adjustability for pin-count reduction and guaranteed 5 V compliance, while MAX16910ATA+T offers higher current headroom at the cost of diagnostic integration and AEC-Q100 Grade 0 assurance.
Availability
TLF42772EPXUMA1 is available at Aetrix Electronics and suitable for automotive radar supply, camera module power, and engine control sensor hub applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for TLF42772EPXUMA1 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 automotive qualification infrastructure.
TLF42772EPXUMA1 belongs to the OPTIREG™ linear regulator product line, designed specifically for fault-tolerant, diagnostic-capable power delivery in safety-critical automotive subsystems such as ADAS and powertrain control.
FAQ
What is the minimum output capacitance required for stable operation?
The TLF42772EPXUMA1 requires a minimum 1 µF ceramic output capacitor with ESR ≤10 Ω at 10 kHz. This value accounts for worst-case ±30% capacitance tolerance and ensures phase margin >45° across temperature and load. Larger values improve transient response but do not affect stability.
How does the current monitor (CSO) function during fault conditions?
During normal operation, CSO outputs an analog voltage proportional to load current (VCSO = ILOAD × RCSO). When overtemperature, overvoltage, or overcurrent is detected, CSO pulls low and holds that state until the fault clears and EN is toggled - providing latched fault indication without external memory.
Can the ST pin drive a microcontroller GPIO directly?
Yes - ST is an open-collector output rated for 45 V maximum and 5 mA sink current. It can interface directly with 3.3 V or 5 V microcontroller GPIOs using a pull-up resistor (typically 10 kΩ) to the MCU's I/O supply rail, enabling hardware interrupt-based fault handling.
Is reverse-polarity protection active when the device is disabled (EN = low)?
Yes - reverse-polarity protection remains fully functional regardless of EN state. The internal protection circuitry blocks current flow from GND to I pin even when the regulator is disabled, preventing damage during battery reversal in maintenance or jump-start scenarios.
TLF42772EPXUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- -
- Output Type:
- -
- Number of Regulators:
- -
- Voltage - Input (Max):
- -
- Voltage - Output (Min/Fixed):
- -
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- -
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
TLF42772EPXUMA1 FAQ
1.How can I place an order for TLF42772EPXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF42772EPXUMA1 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 TLF42772EPXUMA1 reliable?
The price and inventory of TLF42772EPXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF42772EPXUMA1 is usually 5 days.
3.What payment methods are accepted for TLF42772EPXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF42772EPXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF42772EPXUMA1?
TLF42772EPXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF42772EPXUMA1 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 TLF42772EPXUMA1?
For technical support, including TLF42772EPXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF42772EPXUMA1 requirements.
6.How does Aetrix verify that TLF42772EPXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLF42772EPXUMA1 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 TLF42772EPXUMA1 meets industry standards.
7.What is the process for return or replacement of TLF42772EPXUMA1?
All TLF42772EPXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLF42772EPXUMA1, 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 TLF42772EPXUMA1 part is unused and in its original packaging.
Return procedure for TLF42772EPXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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