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Infineon Technologies TLS835B2ELVXUMA1
- Part No.:
- TLS835B2ELVXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS835B2ELVXUMA1.pdf
- Description:
- IC REG LIN POS PROG 350MA SSOP14
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TLS835B2ELVXUMA1 from Infineon Technologies is an automotive-qualified adjustable low-dropout linear voltage regulator delivering 350 mA output current with ≤±2% output voltage accuracy across 1.5 V–6 V, ultra-low 20 µA quiescent current, and 100 mV dropout at 100 mA (5 V output), designed for permanent battery-connected systems operating through cranking.
For engineers reviewing the TLS835B2ELVXUMA1 datasheet, TLS835B2ELVXUMA1 pinout, TLS835B2ELVXUMA1 application, or TLS835B2ELVXUMA1 equivalent, key selection criteria include input voltage range (3.0–40 V), enable-controlled operation, ceramic capacitor stability (1 µF), thermal shutdown, and AEC-Q100 qualification for automotive environments.
Technical Context
The TLS835B2ELVXUMA1 implements a high-stability control loop optimized for fast transient response and compatibility with low-ESR ceramic capacitors as small as 1 µF. Its internal bandgap reference and adjustable feedback via ADJ pin enable precise output setting without external error amplifiers.
It operates across -40°C to +150°C junction temperature, supports extended input down to 3.0 V for cranking resilience, and integrates protection including overtemperature shutdown and output current limiting-triggered by short-to-GND or overload conditions-not intended for continuous fault operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - enables direct connection to automotive battery with cranking support down to 3 V. |
| Output Voltage Range | 1.5 V to 6 V (adjustable via external resistor divider) - supports diverse MCU, sensor, and interface rail requirements. |
| Output Current | Up to 350 mA - sufficient for powering microcontrollers, CAN transceivers, and analog front-ends in body electronics. |
| Quiescent Current | Typ. 20 µA - minimizes standby power loss in always-on automotive modules (e.g., door modules, telematics). |
| Dropout Voltage | Typ. 100 mV at 100 mA (5 V output) - maintains regulation during low-VIN events like cold-cranking. |
| Output Accuracy | ≤ ±2% over temperature and load - ensures reliable logic-level compliance for 3.3 V/5 V digital subsystems. |
| Stability Capacitor | 1 µF ceramic (low-ESR ≤40 Ω) - eliminates need for bulky electrolytics; reduces PCB area and cost. |
Pinout & Package
Package: PG-SSOP-14 (exposed thermal pad), RoHS-compliant, AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Main VIN connection; requires local 100 nF ceramic decoupling to GND for line noise suppression. |
| 4 (EN) | Enable Input | Active-high logic control with integrated pull-down; enables full shutdown (20 µA IQ) when low. |
| 7 (GND) | Ground Reference | Primary return path; must be connected to exposed thermal pad for thermal performance and noise immunity. |
| 12 (ADJ) | Feedback Adjustment | Connects to center tap of external R1/R2 divider to set output voltage per VOUT = VREF × (1 + R1/R2). |
| 14 (Q) | Regulated Output | Delivers stable output; requires 1 µF ceramic capacitor placed close to pin with ESR ≤40 Ω. |
| Exposed Pad | Thermal & Electrical Ground | Must be soldered to PCB copper pour tied to GND for thermal dissipation and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Quiescent Current | 20 µA typical - extends battery life in always-on vehicle modules such as alarm controllers and occupancy sensors. |
| Wide Input Range with Cranking Support | Operates down to 3.0 V input - sustains regulation during engine start-up when battery dips below 6 V. |
| Ceramic-Capacitor Stability | Stable with 1 µF/≤40 Ω ESR output cap - avoids tantalum or aluminum electrolytics, improving reliability and lifetime. |
| Integrated Protection | Thermal shutdown + current limiting - prevents latch-up or destruction during short-circuit or overtemperature faults. |
| Adjustable Output Architecture | External resistor divider on ADJ pin - enables single BOM to support multiple output rails (e.g., 3.3 V, 5.0 V, 2.5 V). |
Applications
| Body Control Module (BCM) | Door Module Electronics |
|---|---|
|
Use Scenario: Powering microcontroller, LIN transceiver, and window motor driver IC in a vehicle door module with permanent battery connection. IC Role / Device Role / Timing Role: Primary LDO supplying 3.3 V rail; regulates against battery fluctuations during cranking and sleep-mode leakage. Use Value: 20 µA quiescent current prevents excessive parasitic drain; 100 mV dropout ensures uninterrupted MCU operation down to 3.3 V input. |
Use Scenario: Providing stable 5.0 V supply to mirror control IC and proximity sensor in side mirror assembly. IC Role / Device Role / Timing Role: Adjustable LDO configured for 5.0 V output; enabled only during vehicle wake-up to minimize standby loss. Use Value: EN pin allows synchronized power gating; ±2% accuracy guarantees sensor ADC reference stability across temperature. |
| Telematics Control Unit (TCU) | Occupancy Detection System |
|
Use Scenario: Generating 3.3 V for cellular modem, GNSS receiver, and secure element in always-connected TCU. IC Role / Device Role / Timing Role: Always-on LDO with cranking resilience; supplies critical communication subsystem during ignition-off data upload. Use Value: 3.0–40 V input range accommodates jump-start and alternator transients; AEC-Q100 qualification ensures field reliability. |
Use Scenario: Powering capacitive touch controller and signal-conditioning amplifier in seat occupancy detection. IC Role / Device Role / Timing Role: Low-noise, precision-adjustable LDO delivering 2.5 V reference for analog sensing chain. Use Value: 1 µF ceramic stability eliminates capacitor aging drift; ±2% output tolerance maintains consistent capacitance measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR (TI) | Fixed 3.3 V output; 300 mA max; 40 µA IQ; 1.8–5.5 V input; SOT-23-5 package. | Lacks adjustability and automotive qualification; suitable only for non-cranking, non-AEC designs. | Select only for cost-sensitive consumer-grade 3.3 V point-of-load where cranking support and AEC-Q100 are unnecessary. |
| MAX1725EUK33+T (Analog Devices) | Fixed 3.3 V; 250 mA; 3.5 µA IQ; 2.5–16 V input; SOT-23-5; no enable or thermal shutdown. | No enable control, no overtemperature protection, limited input range - insufficient for automotive battery tie-in. | Use only in ultra-low-power industrial sensor nodes with stable 3.3 V input; not viable for automotive battery systems. |
Compared with TLV73333PDBVR and MAX1725EUK33+T, TLS835B2ELVXUMA1 uniquely combines AEC-Q100 qualification, 3.0–40 V cranking-capable input, adjustable output, and integrated enable + thermal protection - making it the sole fit for production automotive body electronics requiring functional safety-aware power management.
Availability
TLS835B2ELVXUMA1 is available at Aetrix Electronics and suitable for automotive body electronics, telematics control units, and occupancy detection systems requiring stable component supply under harsh thermal and voltage conditions.
Supply support for TLS835B2ELVXUMA1 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 leadership.
The OPTIREG™ linear family delivers robust, AEC-Q100-qualified voltage regulators targeting permanent-battery automotive systems - emphasizing ultra-low IQ, cranking resilience, and ceramic-capacitor simplicity.
FAQ
What is the minimum input voltage required for regulation at 5 V output?
The TLS835B2ELVXUMA1 maintains regulation down to 3.0 V input (extended operating range), meaning it sustains 5 V output even when VIN drops to 3.0 V - critical for engine cranking where battery voltage may fall below 6 V. Below 3.0 V, output collapses per the functional range specification.
Can the device operate without an external resistor divider?
No - the ADJ pin requires an external resistor divider to set output voltage; open-circuit or floating ADJ will result in undefined or unregulated output. The internal reference is 1.25 V, so VOUT = 1.25 V × (1 + R1/R2); omitting the divider disables regulation.
Is the exposed thermal pad electrically connected internally?
Yes - the exposed pad is internally connected to GND and must be soldered to a PCB GND copper pour. It serves dual functions: thermal dissipation (reducing junction temperature rise) and electrical grounding (improving noise immunity and stability).
Does the enable pin tolerate 12 V directly, or does it require level-shifting?
The EN pin accepts up to 40 V (per absolute maximum rating), so it can be driven directly from automotive battery (12 V nominal or up to ~16 V during charging) without level-shifting. Its integrated pull-down ensures safe default-off behavior during power-up or floating states.
TLS835B2ELVXUMA1 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:
- Active
- Output Configuration:
- Positive
- Output Type:
- Programmable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- 6V
- Voltage Dropout (Max):
- 0.50V @ 250mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (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-SSOP-14-5
TLS835B2ELVXUMA1 FAQ
1.How can I place an order for TLS835B2ELVXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS835B2ELVXUMA1 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 TLS835B2ELVXUMA1 reliable?
The price and inventory of TLS835B2ELVXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS835B2ELVXUMA1 is usually 5 days.
3.What payment methods are accepted for TLS835B2ELVXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS835B2ELVXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS835B2ELVXUMA1?
TLS835B2ELVXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS835B2ELVXUMA1 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 TLS835B2ELVXUMA1?
For technical support, including TLS835B2ELVXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS835B2ELVXUMA1 requirements.
6.How does Aetrix verify that TLS835B2ELVXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS835B2ELVXUMA1 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 TLS835B2ELVXUMA1 meets industry standards.
7.What is the process for return or replacement of TLS835B2ELVXUMA1?
All TLS835B2ELVXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS835B2ELVXUMA1, 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 TLS835B2ELVXUMA1 part is unused and in its original packaging.
Return procedure for TLS835B2ELVXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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