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Infineon Technologies TLS835D2ELVSEXUMA1
- Part No.:
- TLS835D2ELVSEXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS835D2ELVSEXUMA1.pdf
- Description:
- IC REG LIN POS PROG 350MA SSOP14
- Quantity:
- Payment:
- Shipping:
Inventory:1,925
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Product details
Overview
TLS835D2ELVSEXUMA1 from Infineon Technologies is an AEC-Q100 qualified automotive-grade low-dropout linear voltage regulator with selectable 5 V or 3.3 V output, ±2% output voltage precision, 350 mA output current capability, and ultra-low 20 µA quiescent current. It operates across 3.0–40 V input range and supports cranking conditions in permanently battery-connected systems such as body control modules and infotainment power rails.
For engineers reviewing the TLS835D2ELVSEXUMA1 datasheet, TLS835D2ELVSEXUMA1 pinout, TLS835D2ELVSEXUMA1 application, or TLS835D2ELVSEXUMA1 equivalent, key selection criteria include adjustable reset threshold (down to 2 V), enable-controlled operation, ceramic-capacitor stability (1 µF), thermal shutdown, and output current limiting-critical for automotive supply integrity under load transients and cold-crank voltage dips.
Technical Context
This regulator implements a high-stability control loop optimized for fast transient response and compatibility with low-ESR ceramic capacitors. Its architecture integrates bandgap reference, current-limiting circuitry, overtemperature protection, and a programmable reset generator with external delay timing capacitor and adjustable undervoltage threshold via RADJ pin.
The device supports dual-output-voltage configuration via SEL pin logic (5 V when tied to Q, 3.3 V when grounded), and features open-collector reset output (RO) with internal pull-up to Q. Reset assertion occurs at input voltage below programmable threshold, with power-on delay set by capacitor on D pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - enables operation during automotive cold-crank (down to ~3 V) and withstands load-dump transients up to 40 V. |
| Output Voltage Options | 3.3 V or 5.0 V - selected by SEL pin logic; supports dual-rail MCU or sensor subsystems without external resistive dividers. |
| Output Voltage Accuracy | ≤ ±2% - ensures reliable logic-level compliance for downstream 3.3 V/5 V digital ICs across temperature and line/load variations. |
| Max Output Current | 350 mA - sufficient for powering microcontrollers, CAN transceivers, and small peripheral clusters in body electronics. |
| Quiescent Current | 20 µA typical - minimizes standby power loss in always-on automotive domains (e.g., alarm, telematics, gateway wake-up circuits). |
| Dropout Voltage | 100 mV @ 100 mA (5 V mode), 120 mV @ 100 mA (3.3 V mode) - preserves regulation margin during low-input-voltage cranking events. |
| Output Capacitor | 1 µF ceramic - eliminates need for bulk electrolytic capacitors; reduces PCB area and improves long-term reliability. |
Pinout & Package
Package: PG-SSOP-14 (exposed pad), RoHS-compliant, thermally enhanced for automotive under-hood mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 I | Input voltage supply | Primary VIN connection; requires local 100 nF ceramic decoupling to GND per layout best practice. |
| 4 EN | Enable control input | Active-high logic input with internal pull-down; allows system-level power sequencing and sleep-mode control. |
| 7 GND | Ground reference | Power and signal ground; exposed pad must be soldered to PCB thermal plane for thermal performance. |
| 8 D | Reset delay timing | Connects external capacitor to GND to set power-on reset delay time (e.g., 100 nF ≈ 100 ms). |
| 10 RO | Reset open-collector output | Asserts low when input falls below programmed threshold; pulled up internally to Q for direct MCU reset pin interface. |
| 11 RADJ | Reset threshold adjustment | Accepts external voltage divider to set undervoltage detection threshold down to 2 V for flexible system brown-out management. |
| 12 SEL | Output voltage select | Logic-selects 5 V (connected to Q) or 3.3 V (connected to GND); no external components required. |
| 14 Q | Regulated output | Delivers stable 3.3 V or 5 V; connects directly to load and 1 µF ceramic output capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable output voltage | Hardware-configurable 3.3 V or 5 V via SEL pin-eliminates BOM variants and simplifies design reuse across platforms. |
| Adjustable reset threshold | Programmable down to 2 V using external resistor divider on RADJ-enables precise brown-out detection aligned with system MCU requirements. |
| Ultra-low quiescent current | 20 µA typical-meets ISO 16750-2 Class D (standby current ≤ 50 µA) for automotive always-on modules. |
| Ceramic-capacitor stability | Stable with 1 µF/≤50 Ω ESR output capacitor-reduces component count, footprint, and aging-related failure modes vs. tantalum/electrolytic. |
| Integrated protection | Thermal shutdown + output current limiting-prevents latch-up or destruction during short-circuit or overtemperature fault conditions. |
Applications
| Body Control Module (BCM) | Infotainment Power Rail |
|---|---|
Use Scenario: Powers microcontroller, LIN transceivers, and LED drivers in vehicle door modules and central junction boxes. IC Role / Device Role / Timing Role: Primary 5 V LDO supplying logic domain; provides regulated rail during cranking and battery disconnect events. Use Value: 3.0 V minimum input enables uninterrupted operation down to battery voltages seen during engine start (≈3.5 V), preventing MCU resets. | Use Scenario: Supplies 3.3 V domain for audio DSP, display controller, and USB PHY in head unit designs. IC Role / Device Role / Timing Role: Secondary LDO with reset supervision; coordinates safe power-up sequencing with main SoC. Use Value: Adjustable RADJ threshold ensures reset assertion before SoC enters invalid operating voltage range, avoiding firmware corruption. |
| Telematics Control Unit (TCU) | Automotive Gateway |
Use Scenario: Powers GPS/GNSS receiver, cellular modem baseband, and secure element in connected car telematics units. IC Role / Device Role / Timing Role: Always-on 3.3 V regulator with EN control for wake-on-LIN/CAN; supports low-power tracking mode. Use Value: 20 µA quiescent current meets OEM requirements for <50 µA total module standby draw, extending battery life during parking mode. | Use Scenario: Provides isolated 5 V supply for CAN FD transceivers and diagnostic interfaces in multi-bus gateways. IC Role / Device Role / Timing Role: Fault-tolerant LDO with current limiting and thermal protection-ensures bus interface remains functional during short-circuit faults. Use Value: Integrated current limit prevents damage to CAN transceivers during bus wiring faults, eliminating need for external polyfuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 3.3 V fixed output only; 300 mA max; 40 V max input; no reset or SEL functionality | Lacks reset supervision, voltage selection, and automotive qualification (not AEC-Q100) | Use only in non-automotive, cost-sensitive industrial applications where reset and configurability are unnecessary. |
| TPS7B8250QDGNRQ1 | AEC-Q100 qualified; 5 V fixed output; 500 mA; includes watchdog timer but no SEL or adjustable reset threshold | Higher current, integrated watchdog-but no output voltage selection or RADJ flexibility | Prefer when higher output current and system-level watchdog are required, and dual-voltage support is not needed. |
Compared with TLV73333PDBVR and TPS7B8250QDGNRQ1, TLS835D2ELVSEXUMA1 uniquely combines AEC-Q100 qualification, dual-output-voltage hardware selection, adjustable reset threshold, and ultra-low IQ in a single PG-SSOP-14 package-making it optimal for space-constrained, multi-rail automotive ECUs requiring cranking resilience and flexible brown-out management.
Availability
TLS835D2ELVSEXUMA1 is available at Aetrix Electronics and suitable for body control modules, telematics units, and automotive gateways requiring stable component supply, AEC-Q100 compliance, and cranking-condition operation.
Supply support for TLS835D2ELVSEXUMA1 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.
This device belongs to the OPTIREG™ linear regulator product line, engineered specifically for robust, low-power, cranking-capable voltage regulation in automotive electronic control units.
FAQ
What is the function of the RADJ pin?
The RADJ pin allows external adjustment of the reset undervoltage detection threshold from the default value down to 2 V using a resistor divider. It connects to an internal comparator reference and enables precise alignment with downstream MCU reset requirements, supporting flexible brown-out management without changing the LDO itself.
Can the TLS835D2ELVSEXUMA1 operate during cold-cranking conditions?
Yes. With a minimum input voltage of 3.0 V and dropout as low as 100 mV at 100 mA, it maintains regulated output during automotive cold-cranking events where battery voltage may dip to 3.5 V or lower-ensuring continuous operation of safety-critical and always-on ECUs without reset or brown-out.
Is an external output capacitor mandatory, and what type is recommended?
Yes, a 1 µF ceramic capacitor with ≤50 Ω ESR is mandatory at the Q pin for stability. The regulator's control loop is designed exclusively for ceramic capacitors; aluminum or tantalum types are not supported and may cause oscillation or instability per the datasheet validation.
How does the SEL pin configure output voltage?
The SEL pin selects output voltage by logic level: connecting SEL to Q (output) sets 5 V output; connecting SEL to GND sets 3.3 V output. No external resistors or programming are needed-this hardware-based selection simplifies BOM and eliminates configuration errors in production.
TLS835D2ELVSEXUMA1 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):
- 3.3V, 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.60V @ 250mA, 0.5V @ 250mA
- Current - Output:
- 350mA
- Current - Quiescent (Iq):
- 30 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (100Hz), 63db (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
TLS835D2ELVSEXUMA1 FAQ
1.How can I place an order for TLS835D2ELVSEXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS835D2ELVSEXUMA1 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 TLS835D2ELVSEXUMA1 reliable?
The price and inventory of TLS835D2ELVSEXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS835D2ELVSEXUMA1 is usually 5 days.
3.What payment methods are accepted for TLS835D2ELVSEXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS835D2ELVSEXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS835D2ELVSEXUMA1?
TLS835D2ELVSEXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS835D2ELVSEXUMA1 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 TLS835D2ELVSEXUMA1?
For technical support, including TLS835D2ELVSEXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS835D2ELVSEXUMA1 requirements.
6.How does Aetrix verify that TLS835D2ELVSEXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS835D2ELVSEXUMA1 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 TLS835D2ELVSEXUMA1 meets industry standards.
7.What is the process for return or replacement of TLS835D2ELVSEXUMA1?
All TLS835D2ELVSEXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS835D2ELVSEXUMA1, 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 TLS835D2ELVSEXUMA1 part is unused and in its original packaging.
Return procedure for TLS835D2ELVSEXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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