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Infineon Technologies TLS820F0ELV33XUMA1
- Part No.:
- TLS820F0ELV33XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 14-LSSOP (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS820F0ELV33XUMA1.pdf
- Description:
- IC REG LIN 3.3V 200MA SSOP-14-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
TLS820F0ELV33XUMA1 from Infineon Technologies is an AEC-Q100 qualified automotive-grade low dropout linear voltage regulator delivering a fixed 3.3 V output at up to 200 mA, with ±2 % output voltage accuracy, 70 mV typical dropout at 100 mA, and ultra-low quiescent current of 40 µA - designed for permanent battery-connected systems such as engine control units and body electronics.
For engineers reviewing the TLS820F0ELV33XUMA1 datasheet, TLS820F0ELV33XUMA1 pinout, TLS820F0ELV33XUMA1 application, or TLS820F0ELV33XUMA1 equivalent, key selection criteria include its integrated watchdog (16/32/48/96 ms timing), programmable reset delay (8.5/16.5 ms), adjustable reset threshold down to 2.50 V, enable control, and stability with 1 µF ceramic output capacitor.
Technical Context
The TLS820F0ELV33XUMA1 integrates voltage regulation, undervoltage reset, delayed power-on reset, and a current-dependent watchdog in a single PG-SSOP-14 package. Its loop architecture enables fast transient response while maintaining stability with only 1 µF ceramic output capacitance.
Reset functionality includes dual delay options (8.5 ms or 16.5 ms) and an externally adjustable threshold via RADJ pin; watchdog deactivation occurs when quiescent current exceeds 5.5 mA, supporting flexible microcontroller supervision without external timing components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2 % - ensures stable MCU core/logic supply under automotive load and temperature variation. |
| Max Output Current | 200 mA - sufficient to power small microcontrollers, sensors, and CAN transceivers directly. |
| Dropout Voltage | 80 mV typ. @100 mA - enables operation during cold-crank (input down to 3.0 V) without dropout. |
| Quiescent Current | 40 µA typ. - minimizes battery drain in always-on vehicle subsystems. |
| Input Voltage Range | 3.0 V to 40 V - covers full automotive battery range including load dump transients. |
| Reset Threshold | Adjustable down to 2.50 V via RADJ pin - allows precise brown-out detection for 3.3 V systems. |
| Watchdog Timeout | 16 / 32 / 48 / 96 ms - selectable via DT1/DT2 pins; deactivates automatically above 5.5 mA IQ. |
Pinout & Package
Package: PG-SSOP-14 (exposed thermal pad), RoHS-compliant, AEC-Q100 qualified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 I | Input | Main power input (3–40 V); requires local 100 nF ceramic decoupling to GND. |
| 3 EN | Enable | Active-high logic input with internal pull-down; disables regulator and watchdog when low. |
| 5 GND | Ground | Power and signal reference; connects to exposed thermal pad for heat dissipation. |
| 7 WI | Watchdog Input | Trigger input for watchdog timer; toggled by MCU to prevent timeout-induced reset. |
| 8 RADJ | Reset Threshold Adjustment | Connects to external voltage divider to set custom reset threshold down to 2.50 V. |
| 9 DT1, 10 DT2 | Delay Timing Control | Binary-select pins for reset delay (8.5/16.5 ms) and watchdog timeout (16/32/48/96 ms). |
| 11 RO | Reset Output | Open-drain active-low output; asserts during undervoltage or delayed power-on reset. |
| 12 WO | Watchdog Output | Open-drain active-low output; asserts on watchdog timeout unless refreshed via WI. |
| 14 Q | Output | Regulated 3.3 V output; requires ≥1 µF ceramic capacitor to GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Watchdog | Four selectable timeouts (16/32/48/96 ms) with automatic deactivation above 5.5 mA IQ - eliminates need for external watchdog IC. |
| Programmable Reset Delay | Two factory-set delays (8.5 ms or 16.5 ms) selected via DT1/DT2 - avoids false resets during power ramp-up. |
| Ceramic-Capacitor Stability | Stable with 1 µF ceramic output capacitor (low ESR) - reduces BOM count and PCB area vs. tantalum alternatives. |
| Extended Cranking Support | Operates down to 3.0 V input - sustains regulation during engine start when battery dips below 6 V. |
| Thermal Protection | Internal overtemperature shutdown - prevents damage during sustained overload or poor heatsinking. |
Applications
| Engine Control Unit (ECU) | Body Control Module (BCM) |
|---|---|
Use Scenario: Powers 3.3 V microcontroller and associated sensors in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Primary LDO regulator with integrated reset and watchdog for MCU supervision and safe startup. Use Value: Maintains regulation during cranking (≥3.0 V input), provides deterministic reset timing, and detects MCU lockup via watchdog - critical for ASIL-B compliance. | Use Scenario: Supplies door module, lighting, and window control electronics in 12 V vehicle architectures. IC Role / Device Role / Timing Role: System power supervisor with adjustable brown-out detection and delayed reset for sequenced initialization. Use Value: RADJ pin enables precise 3.3 V reset threshold tuning; low 40 µA quiescent current extends battery life in sleep mode. |
| Advanced Driver Assistance Systems (ADAS) | Infotainment Power Management |
Use Scenario: Powers radar sensor interface MCU and CAN transceiver in front/rear ADAS cameras or radar modules. IC Role / Device Role / Timing Role: Fault-tolerant 3.3 V supply with watchdog-triggered fail-safe behavior upon MCU hang. Use Value: Watchdog timeout selection (16–96 ms) matches MCU instruction cycle time; open-drain RO/WO outputs interface directly to safety controller inputs. | Use Scenario: Supplies audio DSP, display controller, and Bluetooth/Wi-Fi SoC in head unit designs. IC Role / Device Role / Timing Role: Secondary LDO with enable control for power domain sequencing and low-power standby modes. Use Value: EN pin enables full system shutdown; 200 mA output supports burst-mode processing loads without voltage sag. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70733PDPKR | Lower max current (300 mA), no watchdog/reset, no AEC-Q100 qualification | Targeted at consumer/portable, not automotive safety-critical systems | Select only for non-automotive cost-sensitive designs where supervision features are omitted. |
| MAX16910ATA+T | Higher IQ (65 µA), fixed 3.3 V, includes watchdog but no programmable reset delay or RADJ | Lacks adjustable reset threshold and dual-delay option - less flexible for brown-out tuning | Prefer when watchdog-only supervision suffices and AEC-Q100 is required, but fine-grained reset control is unnecessary. |
Compared with TLV70733PDPKR and MAX16910ATA+T, TLS820F0ELV33XUMA1 uniquely combines AEC-Q100 qualification, programmable reset delay, adjustable threshold, and four watchdog timeout options - enabling tighter system-level fault coverage in ASIL-B designs without external components.
Availability
TLS820F0ELV33XUMA1 is available at Aetrix Electronics and suitable for engine control units, body control modules, ADAS sensor nodes, and infotainment subsystems requiring stable component supply across automotive production lifecycles.
Supply support for TLS820F0ELV33XUMA1 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, and industrial control ICs, with leadership in AEC-Q100-qualified analog and mixed-signal solutions.
The TLS820F0 product line delivers integrated power-supervision regulators for automotive ECUs and body electronics, designed to replace discrete reset/watchdog circuits while meeting stringent ASIL-B functional safety requirements.
FAQ
What is the minimum input voltage required for regulation at full load?
The TLS820F0ELV33XUMA1 maintains regulation down to 3.0 V input across its full operating temperature range (−40 °C to +150 °C junction), with a typical dropout of 80 mV at 100 mA. At 200 mA, dropout rises to approximately 120 mV - so minimum input for full-load 3.3 V output is 3.42 V.
How is the reset delay time selected?
Reset delay is selected using pins DT1 and DT2: connect both to GND for 8.5 ms delay, or DT1 to GND and DT2 to Q (output) for 16.5 ms delay. These configurations are defined in Table 8 of the datasheet and are independent of watchdog timing selection.
Can the watchdog be disabled entirely?
Yes - the watchdog is disabled when the EN pin is held low, or when quiescent current remains below 5.5 mA. In normal operation, it activates automatically once IQ exceeds this threshold, eliminating need for software initialization or configuration registers.
Is an external capacitor required on the RADJ pin?
No external capacitor is required on RADJ. It accepts a DC voltage divider (e.g., two resistors from Q to GND) to set the reset threshold between 2.50 V and 3.3 V. The datasheet specifies maximum source impedance of 10 kΩ for stable threshold setting.
TLS820F0ELV33XUMA1 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:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 5 µA
- Current - Supply (Max):
- 80 µA
- PSRR:
- 63dB (100Hz)
- Control Features:
- Delay, Enable, Reset, Watchdog
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-SSOP-14-5
TLS820F0ELV33XUMA1 FAQ
1.How can I place an order for TLS820F0ELV33XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS820F0ELV33XUMA1 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 TLS820F0ELV33XUMA1 reliable?
The price and inventory of TLS820F0ELV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS820F0ELV33XUMA1 is usually 5 days.
3.What payment methods are accepted for TLS820F0ELV33XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS820F0ELV33XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS820F0ELV33XUMA1?
TLS820F0ELV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS820F0ELV33XUMA1 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 TLS820F0ELV33XUMA1?
For technical support, including TLS820F0ELV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS820F0ELV33XUMA1 requirements.
6.How does Aetrix verify that TLS820F0ELV33XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS820F0ELV33XUMA1 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 TLS820F0ELV33XUMA1 meets industry standards.
7.What is the process for return or replacement of TLS820F0ELV33XUMA1?
All TLS820F0ELV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS820F0ELV33XUMA1, 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 TLS820F0ELV33XUMA1 part is unused and in its original packaging.
Return procedure for TLS820F0ELV33XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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