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Infineon Technologies TLS805B1LDV50XUMA1
- Part No.:
- TLS805B1LDV50XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 10-TFDFN Exposed Pad
- Datasheet:
-
TLS805B1LDV50XUMA1.pdf
- Description:
- IC REG LINEAR 5V 50MA TSON-10
- Quantity:
- Payment:
- Shipping:
Inventory:9,945
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Product details
Overview
TLS805B1LDV50XUMA1 from Infineon Technologies is an AEC-Q100 qualified ultra-low-quiescent-current linear voltage regulator delivering a fixed 5.0 V ±2% output at up to 50 mA, with 5.5 µA quiescent current, 2.75–42 V input range, and 100 mV typical dropout at full load-designed for permanent battery-connected automotive systems such as transceiver and sensor supplies.
For engineers reviewing the TLS805B1LDV50XUMA1 datasheet, TLS805B1LDV50XUMA1 pinout, TLS805B1LDV50XUMA1 application, or TLS805B1LDV50XUMA1 equivalent, key selection criteria include cranking-mode operation down to 2.75 V input, <1 µA off-mode current, integrated enable control, thermal shutdown, and output current limiting in PG-TSON-10 package.
Technical Context
The TLS805B1LDV50XUMA1 implements a bandgap-referenced feedback loop with internal pass transistor, enabling stable regulation across wide input voltage (2.75–42 V) and load (0–50 mA) ranges while maintaining ultra-low quiescent current. Its tracking region begins at 2.75 V, supporting operation during automotive cranking.
Protection logic includes foldback current limiting that reduces output voltage under overload, plus thermal shutdown that disables the pass element above 150°C junction temperature-restarting automatically after cooldown. Enable pin features integrated pull-down for default-off behavior and TTL/CMOS-compatible threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 5.0 V ±2% - ensures stable microcontroller or transceiver supply within automotive voltage tolerance bands |
| Quiescent Current | 5.5 µA typ. - enables always-on functionality without excessive battery drain in parked vehicles |
| Input Voltage Range | 2.75 V to 42 V - supports cold-cranking (down to 2.75 V) and load-dump (up to 42 V) conditions |
| Dropout Voltage | 100 mV typ. @ 50 mA - allows regulation even when input drops close to output, critical for low-VIN operation |
| Enable Threshold | VEN(H) ≥ 2.0 V, VEN(L) ≤ 0.8 V - compatible with standard 3.3 V/5 V logic without level-shifting |
| Thermal Shutdown | 150°C ±10°C - protects against sustained overloads or poor PCB heatsinking during continuous operation |
| Output Capacitor | ≥1 µF ceramic, ESR ≤100 Ω - enables stability with small-footprint, low-ESR MLCCs; no external compensation required |
Pinout & Package
Delivered in PG-TSON-10 (3 mm × 3 mm, 0.5 mm pitch) with exposed thermal pad. Package supports high-power-density automotive PCB layouts and efficient heat transfer via soldered exposed pad to internal ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Main power input; requires local 100 nF ceramic decoupling to suppress line transients |
| 3 (EN) | Enable Control | Active-high logic input with internal pull-down; enables regulator when ≥2.0 V, disables to <1 µA IQ |
| 5 (GND) | Ground Reference | Primary return path for input, output, and internal circuitry; must be low-impedance connection |
| 9 (Q) | Regulated Output | 5.0 V regulated source; requires ≥1 µF ceramic capacitor with ESR ≤100 Ω for loop stability |
| Exposed Pad | Thermal & Electrical Ground | Must be soldered to PCB GND plane to ensure thermal performance (RthJA = 60 K/W on 2s2p board) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 5.5 µA enables >1-year battery standby life in always-on vehicle modules (e.g., RKE receivers) |
| Extended cranking operation | Regulation starts at 2.75 V input-supports ECUs that must remain active during engine start |
| Integrated protection | Current limiting + thermal shutdown prevent damage during short-circuit or overheating faults |
| Single-output capacitor stability | Stable with only 1 µF ceramic output cap-reduces BOM count and PCB area vs. legacy LDOs |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C ambient operation-meets automotive reliability and lifetime requirements |
Applications
| Transceiver Power Supply | On-Board Sensor Module |
|---|---|
|
Use Scenario: Powering CAN/LIN transceivers in gateways or body control modules with direct battery connection. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying transceiver VCC rail; handles load dump and cranking without reset. Use Value: 42 V max input rating and 2.75 V min operating voltage ensure uninterrupted communication during all vehicle states. |
Use Scenario: Supplying MEMS accelerometers, pressure sensors, or Hall-effect ICs in ADAS or chassis modules. IC Role / Device Role / Timing Role: Low-noise, low-IQ bias source for analog front-ends requiring stable 5 V reference. Use Value: 5.5 µA quiescent current minimizes system sleep-mode power, extending battery-backed sensor node lifetime. |
| Infotainment System Backup | RKE/Immobilizer Module |
|
Use Scenario: Maintaining real-time clock, memory retention, and wake-up logic in head units during ignition-off periods. IC Role / Device Role / Timing Role: Always-on 5 V regulator feeding RTC, SRAM, and low-power MCU peripherals. Use Value: <1 µA off-mode current prevents parasitic drain-critical for multi-week vehicle parking scenarios. |
Use Scenario: Powering RF receiver ICs and secure authentication controllers in passive entry systems. IC Role / Device Role / Timing Role: Standby supply enabling fast wake-up (<100 µs) from deep-sleep upon RF signal detection. Use Value: Fast startup with no overshoot and integrated enable allow precise power sequencing in security-critical modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fixed-output automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | 500 mA output, 65 µA IQ, SOT-23-5 package, no AEC-Q100 qualification | Higher current but higher quiescent draw; suitable for non-automotive industrial use only | Select only if >50 mA load current is required and AEC-Q100 is not mandated |
| MAX1725EUT+T | 5 V ±2%, 150 mA, 3.5 µA IQ, SOT-23-5, AEC-Q100 Grade 2 (−40°C to +105°C) | Lower max ambient temperature rating; lacks extended cranking support below 3.0 V | Prefer when ultra-low IQ is primary and cranking operation is not required |
Compared with TLV73350PDBVR and MAX1725EUT+T, TLS805B1LDV50XUMA1 uniquely combines AEC-Q100 Grade 1 qualification, 2.75 V cranking capability, and 5.5 µA IQ in a thermally enhanced TSON package-making it optimal for safety-critical, battery-permanent automotive nodes.
Availability
TLS805B1LDV50XUMA1 is available at Aetrix Electronics and suitable for automotive infotainment backup power, transceiver supply, and on-board sensor modules requiring stable component supply across extended temperature and voltage extremes.
Supply support for TLS805B1LDV50XUMA1 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 industrial control solutions, with global manufacturing and quality certification aligned to ISO/TS 16949.
TLS805B1LDV50XUMA1 belongs to the OPTIREG™ linear regulator product line, engineered specifically for automotive subsystems demanding ultra-low standby power, cranking resilience, and AEC-Q100 compliance.
FAQ
What is the minimum input voltage required for regulation during cranking?
The TLS805B1LDV50XUMA1 maintains regulation down to 2.75 V input-verified per functional range specifications. This enables continuous operation during engine cranking events where battery voltage dips below 6 V, ensuring uninterrupted power to critical transceivers and sensors without brownout resets.
Does this regulator require an input capacitor for stability?
No input capacitor is required for loop stability, but a 100 nF ceramic capacitor placed close to pins 1 (I) and 5 (GND) is recommended to suppress high-frequency line transients and improve EMC performance-especially when connected directly to the vehicle battery rail.
How does the enable pin behave during power-up?
The EN pin has an internal pull-down resistor (~1 MΩ), ensuring default-off state at power-up. It activates the regulator when driven to ≥2.0 V (logic high); deactivates to <1 µA quiescent current when pulled ≤0.8 V. No external pull-up is needed unless active-low control is implemented externally.
Can the exposed thermal pad be left floating?
No-the exposed pad must be soldered to a PCB copper pour connected to GND. Leaving it unconnected degrades thermal resistance by >100 K/W and risks thermal shutdown under 50 mA load. Per JEDEC JESD51-7 simulation, RthJA rises from 60 K/W to 188 K/W on a single-layer board without pad grounding.
TLS805B1LDV50XUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 10-TFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 42V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 50mA
- Current - Output:
- 50mA
- Current - Quiescent (Iq):
- 8 µA
- Current - Supply (Max):
- 12 µA
- PSRR:
- 55dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-TSON-10
TLS805B1LDV50XUMA1 FAQ
1.How can I place an order for TLS805B1LDV50XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS805B1LDV50XUMA1 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 TLS805B1LDV50XUMA1 reliable?
The price and inventory of TLS805B1LDV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS805B1LDV50XUMA1 is usually 5 days.
3.What payment methods are accepted for TLS805B1LDV50XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS805B1LDV50XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS805B1LDV50XUMA1?
TLS805B1LDV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS805B1LDV50XUMA1 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 TLS805B1LDV50XUMA1?
For technical support, including TLS805B1LDV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS805B1LDV50XUMA1 requirements.
6.How does Aetrix verify that TLS805B1LDV50XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS805B1LDV50XUMA1 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 TLS805B1LDV50XUMA1 meets industry standards.
7.What is the process for return or replacement of TLS805B1LDV50XUMA1?
All TLS805B1LDV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS805B1LDV50XUMA1, 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 TLS805B1LDV50XUMA1 part is unused and in its original packaging.
Return procedure for TLS805B1LDV50XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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