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Infineon Technologies TLS850C2TEV33ATMA1
- Part No.:
- TLS850C2TEV33ATMA1
- Manufacturer:
- Infineon Technologies
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
TLS850C2TEV33ATMA1.pdf
- Description:
- IC REG LINEAR 3.3V 500MA TO252-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,732
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Product details
Overview
TLS850C2TEV33ATMA1 from Infineon Technologies is a low-dropout linear voltage regulator designed for automotive battery-connected systems. It delivers a fixed 3.3 V output with ±2% accuracy, supports up to 500 mA load current, achieves 120 mV dropout at <100 mA, and consumes only 20 µA quiescent current - enabling reliable operation during cranking conditions.
For engineers reviewing the TLS850C2TEV33ATMA1 datasheet, TLS850C2TEV33ATMA1 pinout, TLS850C2TEV33ATMA1 application, or TLS850C2TEV33ATMA1 equivalent, key selection criteria include input voltage range (3–40 V), reset functionality with adjustable delay, ceramic capacitor stability (1 µF), thermal performance on PCB heatsink areas, and AEC-Q100 qualification for automotive use.
Technical Context
This regulator employs an internal bandgap reference and error amplifier driving a pass transistor in a closed-loop configuration. Its loop design enables fast transient response while maintaining stability with only 1 µF ceramic output capacitance and ESR ≤50 Ω.
The device integrates undervoltage-detecting reset logic with programmable delay via external capacitor on pin D, open-collector reset output (RO) with internal pull-up to Q, and dual protection: foldback current limiting and thermal shutdown triggered above 150 °C junction temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 40 V - supports direct battery connection including cold-crank transients down to 3 V. |
| Output Voltage | 3.3 V ±2% - tight regulation suitable for MCU core/logic supply in automotive ECUs. |
| Max Output Current | 500 mA - sufficient for microcontroller, CAN transceiver, and sensor interface loads. |
| Dropout Voltage | 120 mV typical at <100 mA - enables high efficiency at low VIN–VOUT differentials. |
| Quiescent Current | 20 µA typical - minimizes standby power loss in always-on vehicle modules. |
| Reset Threshold | Undervoltage detection at ~92% of nominal VQ - ensures clean system reset before logic corruption. |
| Operating Temp | −40 °C to +150 °C junction - qualified per AEC-Q100 Grade 0 for under-hood applications. |
Pinout & Package
Package: PG-TO252-5 (DPAK-5), thermally enhanced with exposed heat slug connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (I) | Input | Main power input; requires local 100 nF ceramic decoupling to suppress line noise. |
| 2 (D) | Reset Delay Timing | Capacitor-connected node setting reset timeout duration; open if reset unused. |
| 3 (GND) | Ground Reference | Common return path for input, output, and internal circuitry; tied to heat slug. |
| 4 (RO) | Reset Output | Open-collector active-low reset signal pulled up internally to Q; drives external reset logic. |
| 5 (Q) | Regulated Output | 3.3 V regulated supply; requires 1 µF ceramic capacitor with ≤50 Ω ESR for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1 µF ceramic output cap | Eliminates need for large tantalum or electrolytic capacitors - reduces BOM cost and board area. |
| Adjustable reset delay | External capacitor on pin D sets precise power-on reset timing without external timer IC. |
| Integrated overtemperature shutdown | Auto-restarts after cooling - protects against sustained overload without requiring external thermal management. |
| Reverse polarity protection ready | Compatible with series diode or MOSFET-based reverse-input protection schemes per application note. |
| AEC-Q100 qualified | Validated for automotive Grade 0 (−40 °C to +150 °C) - meets reliability requirements for engine control units. |
Applications
| Engine Control Unit (ECU) Power Supply | Body Control Module (BCM) Always-On Rail |
|---|---|
Use Scenario: Powers 32-bit MCU, CAN FD transceiver, and analog sensors in engine bay under wide temperature and cranking stress. IC Role / Device Role / Timing Role: Primary 3.3 V LDO supplying core logic and communication peripherals with reset supervision. Use Value: 3 V minimum operating input and 120 mV dropout ensure uninterrupted operation during 6 V cranking dips. | Use Scenario: Provides always-on 3.3 V rail for door module microcontrollers and LIN transceivers in parked vehicle state. IC Role / Device Role / Timing Role: Low-quiescent-current regulator maintaining system readiness while drawing only 20 µA from battery. Use Value: Ultra-low IQ extends battery life during weeks-long parking without parasitic drain concerns. |
| Advanced Driver Assistance System (ADAS) Camera ECU | Automotive Infotainment Power Sequencing |
Use Scenario: Supplies image signal processor and serializer in front-facing camera module mounted behind windshield. IC Role / Device Role / Timing Role: Post-regulator delivering clean, stable 3.3 V after primary DC/DC conversion; provides reset signal to ISP. Use Value: 1 µF ceramic stability simplifies layout in space-constrained camera housings and avoids ESR-related oscillation. | Use Scenario: Generates controlled 3.3 V supply for audio DSP and display controller with synchronized reset assertion. IC Role / Device Role / Timing Role: Regulator with programmable reset delay ensuring proper power-up sequencing across multiple SoC domains. Use Value: Adjustable delay via pin D capacitor eliminates need for external RC timing network or sequencer IC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | Lower max input (5.5 V), higher IQ (45 µA), no reset output, SOT-23-5 package | Not suitable for direct battery connection; limited to post-regulated 3.3 V rails | Select only for non-automotive, low-voltage, space-constrained designs without reset requirement |
| TPS7B8733QKVURQ1 | Wider input (4–40 V), same 3.3 V output, 35 µA IQ, integrated watchdog, TO-263-5 package | Includes watchdog timer; higher quiescent current; pinout differs (no dedicated reset delay pin) | Prefer when system-level fault monitoring beyond reset is required; verify PCB layout compatibility |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, TLS850C2TEV33ATMA1 uniquely balances ultra-low IQ (20 µA), cranking-capable 3 V start-up, and user-adjustable reset timing - making it optimal for cost-sensitive, thermally constrained automotive modules needing precise power sequencing.
Availability
TLS850C2TEV33ATMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS camera ECUs, and infotainment power sequencing requiring stable component supply across automotive production lifecycles.
Supply support for TLS850C2TEV33ATMA1 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 R&D infrastructure.
This part belongs to the OPTIREG™ linear voltage regulator product line, engineered specifically for automotive power supply resilience - emphasizing cranking operation, low IQ, AEC-Q100 compliance, and integration of supervisory functions like reset.
FAQ
What is the minimum input voltage required for regulation?
The TLS850C2TEV33ATMA1 maintains regulation down to 3.0 V input - its extended operating range enables continuous operation during severe battery voltage sag in automotive cranking events, unlike standard LDOs requiring ≥VOUT + VDO (e.g., 3.3 V + 0.3 V). This 3 V capability is validated across −40 °C to +150 °C junction temperature.
Can the reset function be disabled?
Yes - the reset function is fully optional. Leave pin D (reset delay timing) and pin RO (reset output) unconnected to disable reset behavior. The regulator operates normally as a standalone 3.3 V LDO. No external pull-ups or resistors are needed; RO is open-collector with internal pull-up to Q, and D has no default bias path.
Is an input capacitor mandatory?
An input capacitor (CI) is recommended but not strictly mandatory for basic functionality. A 100 nF ceramic capacitor placed close to pin I improves immunity to line transients and reduces high-frequency noise coupling - especially critical in automotive environments with alternator ripple and load dump spikes. Without CI, EMI susceptibility increases significantly.
How does thermal performance vary with PCB layout?
Thermal resistance (RthJA) ranges from 26 K/W (2-layer board with thermal vias) to 101 K/W (single-layer board with no copper pour). Mounting the exposed heat slug to ≥300 mm² GND copper area reduces RthJA to 48 K/W, enabling 500 mA continuous output at +85 °C ambient. Layout directly determines maximum sustainable load current under thermal constraint.
TLS850C2TEV33ATMA1 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:
- Active
- 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):
- 0.6V @ 250mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 30 µA
- Current - Supply (Max):
- 42 µA
- PSRR:
- 63dB (100Hz)
- Control Features:
- Reset
- 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
TLS850C2TEV33ATMA1 FAQ
1.How can I place an order for TLS850C2TEV33ATMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS850C2TEV33ATMA1 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 TLS850C2TEV33ATMA1 reliable?
The price and inventory of TLS850C2TEV33ATMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS850C2TEV33ATMA1 is usually 5 days.
3.What payment methods are accepted for TLS850C2TEV33ATMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS850C2TEV33ATMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS850C2TEV33ATMA1?
TLS850C2TEV33ATMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS850C2TEV33ATMA1 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 TLS850C2TEV33ATMA1?
For technical support, including TLS850C2TEV33ATMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS850C2TEV33ATMA1 requirements.
6.How does Aetrix verify that TLS850C2TEV33ATMA1 is sourced from the original manufacturer or authorized distributors?
All TLS850C2TEV33ATMA1 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 TLS850C2TEV33ATMA1 meets industry standards.
7.What is the process for return or replacement of TLS850C2TEV33ATMA1?
All TLS850C2TEV33ATMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS850C2TEV33ATMA1, 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 TLS850C2TEV33ATMA1 part is unused and in its original packaging.
Return procedure for TLS850C2TEV33ATMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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