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Infineon Technologies TLF50201ELXUMA2
- Part No.:
- TLF50201ELXUMA2
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLF50201ELXUMA2.pdf
- Description:
- IC REG BUCK 5V 500MA SSOP-14
- Quantity:
- Payment:
- Shipping:
Inventory:2,435
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Product details
Overview
TLF50201ELXUMA2 from Infineon is a 2.2 MHz, 500 mA synchronous step-down DC/DC regulator with integrated PMOS power switch, fixed 5 V output (±2% tolerance), 4.75–45 V input range, and quiescent current <45 µA - designed for automotive dashboard, engine management, and braking systems requiring high efficiency under light-load conditions.
For engineers reviewing the TLF50201ELXUMA2 datasheet, TLF50201ELXUMA2 pinout, TLF50201ELXUMA2 application, or TLF50201ELXUMA2 equivalent, this device delivers automotive-grade reliability (AEC-Q100 qualified), PFM/PWM dual-mode operation, synchronization capability, soft-start, and thermal shutdown in a PG-SSOP-14 package with exposed pad.
Technical Context
The TLF50201ELXUMA2 implements current-mode PWM regulation with internal compensation, enabling excellent line transient rejection and stable loop behavior without external compensation components. Its 2.2 MHz fixed-frequency operation supports compact filter design using 3.3–22 µH inductors and 10–50 µF output capacitors.
Under light load, it automatically transitions to PFM mode-disabling internal control circuitry between pulses-to maintain >85% efficiency at 1 mA load. Synchronization via SYNC pin and frequency adjustment via external resistor on FREQ pin provide system-level timing coordination and EMI optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2% - eliminates need for external feedback resistors; ensures compliance with 5 V logic and microcontroller supply rails. |
| Max Output Current | 500 mA continuous - supports multiple automotive ECUs (e.g., sensor interfaces, CAN transceivers) from single regulator. |
| Input Voltage Range | 4.75 V to 45 V - accommodates cold-crank (4.5 V) and load-dump (40 V+) events per ISO 7637-2 without external protection. |
| Quiescent Current | <45 µA at nominal battery voltage - enables always-on functionality in body electronics with minimal battery drain. |
| Switching Frequency | 2.2 MHz nominal - allows use of sub-3 mm height inductors and reduces EMI fundamental frequency above AM band. |
| Operating Junction Temp | −40°C to +150°C - validated for under-hood placement per AEC-Q100 Grade 0 requirements. |
| Protection Features | Cycle-by-cycle current limit, overtemperature shutdown, input UVLO - prevents latch-up and thermal runaway during fault conditions. |
Pinout & Package
Package: PG-SSOP-14 with exposed thermal pad (connected to GND and heatsink area).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 6, 8, 12, 14 | N.C. | Internally unconnected; may be left open or tied to GND for mechanical stability and EMI reduction. |
| 4 | SYNC | Synchronization input - accepts external clock to align switching edges across multiple regulators, reducing beat frequencies. |
| 5 | FREQ | Frequency adjustment - resistor-to-GND sets nominal frequency; required when SYNC is unused or to fine-tune near sync target. |
| 7 | FB | Feedback input - directly connected to output capacitor; also supplies internal bias rail from regulated output. |
| 9, 10 | GND | Power ground - low-inductance, wide-trace connection essential for noise immunity and thermal dissipation via exposed pad. |
| 11 | SWO | Buck switch output - connects to inductor and catch diode cathode; carries high di/dt switching current; requires short, low-inductance routing. |
| 13 | VS | Supply voltage input - accepts full 4.75–45 V range; internal UVLO asserts below 4.2 V typical to prevent unstable startup. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS Power Switch | Eliminates external high-side MOSFET and gate driver, reducing BOM count and PCB footprint by ≥30% vs discrete buck controllers. |
| PFM Mode at Light Load | Maintains >85% efficiency at 1 mA output - critical for always-on modules (e.g., door lock controllers) where standby power dominates lifetime energy use. |
| Soft-Start Function | Internal ramp limits inrush current during startup, preventing input voltage sag and output overshoot - no external capacitor required. |
| AEC-Q100 Qualified | Validated for automotive Grade 0 (−40°C to +150°C TJ); includes HTOL, temperature cycling, and ESD testing per JEDEC standards. |
| 100% Duty Cycle Capability | Enables dropout operation down to VS = VOUT (5 V), supporting extended cold-crank operation where input drops to 5.5 V. |
Applications
| Dashboard Instrument Cluster | Engine Control Unit (ECU) |
|---|---|
|
Use Scenario: Powering microcontroller, display drivers, and analog sensors in digital instrument clusters with strict EMC and thermal constraints. IC Role / Device Role / Timing Role: Primary 5 V power supply for MCU core and peripherals; operates in PFM mode during vehicle sleep state. Use Value: Ultra-low quiescent current extends battery life during 14-day key-off period; 2.2 MHz switching avoids interference with FM radio band. |
Use Scenario: Supplying 5 V to crank-angle sensor interface, fuel injector drivers, and CAN transceivers in engine bay environments. IC Role / Device Role / Timing Role: High-reliability buck regulator handling ISO 7637-2 pulse 5a (load dump) and pulse 4 (cold crank) without derating. Use Value: 45 V absolute max input rating and integrated overtemperature shutdown ensure uninterrupted operation at 150°C junction temperature. |
| Braking System ABS Module | Automotive Infotainment Head Unit |
|
Use Scenario: Providing clean, stable 5 V rail to ABS microcontroller and wheel speed sensor signal conditioners in vibration-prone locations. IC Role / Device Role / Timing Role: Safety-critical power stage with cycle-by-cycle current limiting and fast UVLO response (<10 µs) to prevent brownout-induced faults. Use Value: AEC-Q100 qualification and −40°C to +150°C operation guarantee functional safety compliance per ISO 26262 ASIL-B requirements. |
Use Scenario: Powering USB host controllers, audio codecs, and touch controller ICs in head units with variable ambient temperature and EMI-sensitive RF sections. IC Role / Device Role / Timing Role: Secondary 5 V regulator synchronized to main SoC clock to minimize conducted EMI coupling into AM/FM receivers. Use Value: SYNC pin enables deterministic switching edge alignment, reducing peak spectral amplitude by up to 12 dB compared to free-running operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54302DDCR (TI) | 3.5 V–28 V input, 3 A output, 500 kHz switching - lacks PFM mode and AEC-Q100 qualification. | Targeted at industrial power supplies; not validated for automotive temperature or stress profiles. | Select only for non-automotive designs where higher current and lower cost outweigh thermal/EMI trade-offs. |
| MPQ4420AGL-A (Monolithic Power) | 4–36 V input, 2 A output, 2.2 MHz, AEC-Q100 Grade 1 (−40°C to +125°C) - wider current range but lower max junction temperature. | Acceptable for cabin modules (e.g., HVAC controls) but not under-hood due to 125°C TJ limit. | Choose when 2 A output is needed and operating temperature stays below 125°C; verify thermal margin with RthJA = 54 K/W. |
Compared with TPS54302DDCR and MPQ4420AGL-A, the TLF50201ELXUMA2 uniquely combines AEC-Q100 Grade 0 qualification, 150°C operation, and sub-45 µA IQ - making it the only option qualified for direct engine compartment placement with zero derating.
Availability
TLF50201ELXUMA2 is available at Aetrix Electronics and suitable for automotive dashboard, engine management, and braking systems requiring stable component supply across long production lifecycles and stringent environmental validation.
Supply support for TLF50201ELXUMA2 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 qualification infrastructure.
The TLF50201ELXUMA2 belongs to Infineon's automotive-grade DC/DC converter product line, engineered specifically for harsh-environment power conversion in engine control, chassis, and body electronics.
FAQ
Is the TLF50201ELXUMA2 pin-compatible with earlier TLF50201 variants?
Yes - TLF50201ELXUMA2 shares identical PG-SSOP-14 pinout, electrical characteristics, and thermal performance with TLF50201ELV50 and TLF50201EL. The 'XUMA2' suffix denotes tape-and-reel packaging per AEC-Q200 standard; no functional or layout changes are introduced.
Can the SYNC pin be left unconnected if not used?
No - the SYNC pin must be pulled to GND via a 10 kΩ resistor if synchronization is disabled. Leaving it floating may cause erratic switching behavior or increased EMI due to noise coupling into the high-impedance input node.
What is the minimum output capacitance required for stable operation?
The datasheet specifies 10 µF minimum ceramic output capacitance with ESR ≤0.1 Ω. Using less than 10 µF risks instability and excessive output ripple; X7R or X5R dielectrics are recommended for −40°C to +125°C performance consistency.
Does the TLF50201ELXUMA2 require an external bootstrap capacitor?
No - the device uses an integrated PMOS high-side switch and does not employ bootstrap gate drive. Unlike NMOS-based controllers, it draws internal bias from the FB pin (i.e., output voltage), eliminating need for external bootstrap components or charge pumps.
TLF50201ELXUMA2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.75V
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 500mA
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14
TLF50201ELXUMA2 FAQ
1.How can I place an order for TLF50201ELXUMA2 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLF50201ELXUMA2 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 TLF50201ELXUMA2 reliable?
The price and inventory of TLF50201ELXUMA2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLF50201ELXUMA2 is usually 5 days.
3.What payment methods are accepted for TLF50201ELXUMA2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLF50201ELXUMA2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLF50201ELXUMA2?
TLF50201ELXUMA2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLF50201ELXUMA2 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 TLF50201ELXUMA2?
For technical support, including TLF50201ELXUMA2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLF50201ELXUMA2 requirements.
6.How does Aetrix verify that TLF50201ELXUMA2 is sourced from the original manufacturer or authorized distributors?
All TLF50201ELXUMA2 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 TLF50201ELXUMA2 meets industry standards.
7.What is the process for return or replacement of TLF50201ELXUMA2?
All TLF50201ELXUMA2 units undergo pre-shipment inspection (PSI). If there is an issue with TLF50201ELXUMA2, 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 TLF50201ELXUMA2 part is unused and in its original packaging.
Return procedure for TLF50201ELXUMA2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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