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Infineon Technologies TLS850D0TEV33ATMA1
- Part No.:
- TLS850D0TEV33ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLS850D0TEV33ATMA1.pdf
- Description:
- IC REG LINEAR 3.3V 500MA TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,999
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Product details
Overview
TLS850D0TEV33ATMA1 from Infineon Technologies is a fixed-output 3.3 V, 500 mA automotive-grade low dropout linear voltage regulator in PG-TO252-5 package. It operates from 3.0 V to 40 V input, delivers ±2 % output voltage accuracy, features 70 mV typical dropout at 100 mA, and integrates enable control, undervoltage reset with 16.5 ms delay, overtemperature shutdown, and current limiting - designed for battery-permanent automotive ECUs requiring cranking support.
For engineers reviewing the TLS850D0TEV33ATMA1 datasheet, TLS850D0TEV33ATMA1 pinout, TLS850D0TEV33ATMA1 application, or TLS850D0TEV33ATMA1 equivalent, key selection criteria include its 3.3 V fixed output, 40 µA quiescent current, ceramic-capacitor stability (1 µF), AEC-Q100 qualification, and integrated reset/enable functionality in a thermally enhanced surface-mount package.
Technical Context
The TLS850D0TEV33ATMA1 implements a bandgap-referenced regulation loop optimized for fast transient response and stability with minimal external components. Its architecture integrates an internal current-limiting circuit, thermal shutdown with hysteresis, and open-collector reset output with built-in pull-up to Q.
It supports extended input operation down to 3.0 V for cold-cranking resilience and maintains regulation across −40 °C to +150 °C junction temperature. The enable input includes an integrated pull-down resistor, and the reset function monitors output voltage with programmable delay and undervoltage detection thresholds.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2 % - ensures stable MCU core/logic supply under load and temperature variation |
| Max Output Current | 500 mA - sufficient for microcontroller, CAN transceiver, and sensor interface power domains |
| Dropout Voltage | 80 mV typ. @100 mA - enables operation during 12 V battery cranking (down to ~6 V input) |
| Quiescent Current | 40 µA typ. - minimizes standby power loss in always-on automotive modules |
| Input Voltage Range | 3.0 V to 40 V - covers cold-crank, load-dump, and dual-battery system requirements |
| Reset Delay | 16.5 ms at power-on - provides reliable microcontroller initialization timing after supply stabilization |
| Thermal Shutdown | Active at Tj ≥ 170 °C with hysteresis - protects against sustained overload or poor heatsinking |
Pinout & Package
Package: PG-TO252-5 (DPAK) with exposed thermal slug connected to GND - requires PCB copper pour for thermal dissipation and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input Supply | Accepts 3.0–40 V input; requires local 100 nF ceramic decoupling to GND for noise immunity |
| 2 (EN) | Enable Control | Active-high logic input with internal pull-down; drives IC into ultra-low-power shutdown state when low |
| 3 (GND) | Ground Reference | Primary signal and power return; must be connected to thermal slug and PCB ground plane |
| 4 (RO) | Reset Output | Open-collector output with internal pull-up to Q; asserts low on undervoltage or fault conditions |
| 5 (Q) | Regulated Output | 3.3 V regulated supply; requires ≥1 µF ceramic capacitor with ≤100 Ω ESR for loop stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 40 µA typical - extends battery life in always-on vehicle modules (e.g., telematics, alarm systems) |
| Ceramic-capacitor stability | Stable with 1 µF output capacitor - eliminates need for costly tantalum or aluminum electrolytic capacitors |
| Integrated reset generator | 16.5 ms power-on delay + undervoltage detection - replaces discrete reset IC in MCU power sequencing |
| Thermal and current protection | Auto-recovering overtemperature shutdown + foldback current limit - prevents latch-up during short-circuit events |
| AEC-Q100 qualified | Grade 1 (−40 °C to +125 °C ambient) - certified for engine bay and chassis-mounted automotive applications |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera ECU |
|---|---|
Use Scenario: Powering microcontroller, LIN transceiver, and door-lock actuators in 12 V vehicle architecture. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying MCU core and peripheral I/O rails with cranking resilience. Use Value: Maintains regulation down to 3.0 V input during engine start, preventing brownout resets and enabling fail-safe actuator control. |
Use Scenario: Providing clean, sequenced 3.3 V supply to image sensor and ISP in rear-view camera module. IC Role / Device Role / Timing Role: Regulated power source with integrated reset signal for synchronized sensor initialization. Use Value: 16.5 ms reset delay ensures stable power before sensor firmware execution, eliminating boot failures. |
| Infotainment Head Unit | Electric Power Steering (EPS) Sensor Interface |
Use Scenario: Supplying 3.3 V to audio codec, touch controller, and display driver ICs in infotainment mainboard. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO for analog-sensitive subsystems with enable-controlled power gating. Use Value: 40 µA quiescent current reduces parasitic drain during vehicle sleep mode, meeting OEM <100 µA requirement. |
Use Scenario: Powering Hall-effect position sensors and signal-conditioning amplifiers in EPS torque-sensing path. IC Role / Device Role / Timing Role: Safety-relevant 3.3 V rail with undervoltage reset and thermal monitoring per ISO 26262 ASIL-B decomposition. Use Value: Integrated current limiting and overtemperature shutdown prevent fault propagation in safety-critical sensor chains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3.3 V automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA max output, 50 µA IQ, no integrated reset, SOT-23-5 package | Lacks reset output and automotive qualification; suitable only for non-safety consumer-grade modules | Select only if reset signaling is handled externally and AEC-Q100 is not required |
| TPS7B8733QKVURQ1 | 500 mA, 28 µA IQ, adjustable reset threshold, wettable flank QFN package | Higher precision reset (±0.5 %) and smaller footprint, but requires external capacitor for delay tuning | Prefer when programmable reset voltage or space-constrained layout outweighs cost and design simplicity |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, TLS850D0TEV33ATMA1 offers integrated 16.5 ms reset delay and AEC-Q100 Grade 1 qualification out-of-box, reducing BOM count and validation effort for mainstream automotive ECUs - while maintaining competitive thermal performance via its exposed DPAK slug.
Availability
TLS850D0TEV33ATMA1 is available at Aetrix Electronics and suitable for body control modules, ADAS camera ECUs, infotainment head units, and electric power steering sensor interfaces requiring stable component supply across automotive production lifecycles.
Supply support for TLS850D0TEV33ATMA1 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 electronics, and security solutions, with global manufacturing and R&D infrastructure.
This device belongs to Infineon's TLS family of automotive LDO regulators - engineered specifically for permanent-battery-connected vehicle systems demanding cranking resilience, ultra-low IQ, and functional safety support.
FAQ
What is the minimum input voltage required for regulation at full load?
The TLS850D0TEV33ATMA1 maintains regulation down to 3.0 V input across its full operating temperature range, even at 500 mA output current. Below this threshold, output voltage drops linearly with input (dropout behavior), enabling operation during severe cold-crank events where battery voltage dips below 6 V.
Can the RO pin drive a microcontroller reset input directly?
Yes - the RO pin is an open-collector output with internal pull-up to Q (3.3 V), delivering a clean active-low reset signal compatible with standard CMOS reset inputs. No external pull-up is needed unless higher voltage logic (e.g., 5 V MCU) is used, in which case a level-shifting resistor divider is required.
Is external compensation required for stability?
No - the regulator is internally compensated and stable with a single 1 µF ceramic output capacitor (±30 % tolerance) and ESR ≤100 Ω. This eliminates external compensation networks and simplifies layout, especially in space-constrained automotive modules.
How does the enable function behave during power-up?
The EN pin has an integrated pull-down resistor (~100 kΩ), ensuring the device remains disabled until a valid high-level signal (>2.0 V) is applied. This prevents uncontrolled power-on sequencing and allows precise control of system wake-up timing via MCU GPIO or ignition-sense circuitry.
TLS850D0TEV33ATMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.43V @ 250mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 52 µA
- Current - Supply (Max):
- 82 µA
- PSRR:
- 59dB (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-TO252-5
TLS850D0TEV33ATMA1 FAQ
1.How can I place an order for TLS850D0TEV33ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS850D0TEV33ATMA1 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 TLS850D0TEV33ATMA1 reliable?
The price and inventory of TLS850D0TEV33ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS850D0TEV33ATMA1 is usually 5 days.
3.What payment methods are accepted for TLS850D0TEV33ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS850D0TEV33ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS850D0TEV33ATMA1?
TLS850D0TEV33ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS850D0TEV33ATMA1 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 TLS850D0TEV33ATMA1?
For technical support, including TLS850D0TEV33ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS850D0TEV33ATMA1 requirements.
6.How does Aetrix verify that TLS850D0TEV33ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLS850D0TEV33ATMA1 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 TLS850D0TEV33ATMA1 meets industry standards.
7.What is the process for return or replacement of TLS850D0TEV33ATMA1?
All TLS850D0TEV33ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS850D0TEV33ATMA1, 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 TLS850D0TEV33ATMA1 part is unused and in its original packaging.
Return procedure for TLS850D0TEV33ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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