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Infineon Technologies TLS203B0EJV33XUMA1
- Part No.:
- TLS203B0EJV33XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS203B0EJV33XUMA1.pdf
- Description:
- IC REG LIN 3.3V 300MA 8DSO E-PAD
- Quantity:
- Payment:
- Shipping:
Inventory:1,658
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Product details
Overview
TLS203B0EJV33 from Infineon Technologies is a fixed-output, 3.3 V, 300 mA low-dropout linear voltage regulator with 270 mV dropout at full load, 24 µVRMS output noise (10 Hz–100 kHz), and 30 µA quiescent current. It features reverse polarity protection, overtemperature/overcurrent shutdown, and AEC-Q100 qualification for automotive post-regulation in battery-supplied ECUs.
For engineers reviewing the TLS203B0EJV33 datasheet, TLS203B0EJV33 pinout, TLS203B0EJV33 application, or TLS203B0EJV33 equivalent, key selection criteria include its 2.5% output accuracy across temperature and load, stability with ≥3.3 µF ceramic output capacitors, exposed-pad DSO-8 thermal performance, and integrated reverse-current blocking without external diodes.
Technical Context
The TLS203B0EJV33 implements a micropower bandgap reference with error amplifier feedback to the pass transistor, enabling precise 3.3 V regulation down to 2.3 V input. Its internal saturation control and thermal foldback ensure safe operation under overload or high ambient conditions.
It integrates reverse-battery protection via internal MOSFET architecture that blocks reverse current from Q to I, eliminating need for external series diodes. The SENSE pin enables Kelvin sensing for improved load regulation, while BYP supports 10 nF capacitor connection to reduce noise by bypassing the reference node.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2.5% over −40°C to +125°C junction temperature and full 0–300 mA load range. |
| Dropout Voltage | 270 mV at 300 mA load; enables regulation with only 3.8 V input, critical for 12 V automotive systems under cranking. |
| Output Noise | 24 µVRMS (10 Hz–100 kHz) with 10 nF BYP capacitor; meets stringent noise requirements for ADC references and RF power supply rails. |
| Quiescent Current | 30 µA typical; sustains ultra-low standby power in always-on automotive modules such as body controllers and telematics. |
| Input Voltage Range | 3.8 V to 20 V; accommodates wide automotive battery transients including load dump up to 20 V and cold-crank dips to 3.8 V. |
| Shutdown Current | <1 µA when EN = low; enables deep-sleep mode for infotainment and ADAS subsystems during vehicle off-state. |
| Thermal Resistance | RthJA = 66 K/W with 300 mm² PCB copper heatsink; supports 300 mA continuous operation at +85°C ambient without forced air. |
Pinout & Package
Package: PG-DSO-8 exposed-pad (RoHS-compliant, green product). Exposed pad (Pin 9) must be soldered to PCB ground plane and electrically tied to Pin 6 (GND) for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Regulated Output | Delivers 3.3 V to load; requires ≥3.3 µF output capacitor (ceramic/tantalum/aluminum) for stability; peak transient response depends on CQ value and ESR. |
| 2 SENSE | Output Voltage Sense | Kelvin sense input for error amplifier; connects directly to load to compensate for PCB trace IR drop; improves load regulation to ≤0.1%. |
| 3,7 NC | No Connect | Internally unconnected; may be left floating or tied to GND per layout best practice; no electrical function. |
| 4 BYP | Bypass Reference Node | Accepts 10 nF capacitor to Q to shunt reference noise; clamped to ±0.6 V; unused pin must remain open. |
| 5 EN | Enable Control | Active-high logic input; pulls output off when low; compatible with 3.3 V/5 V CMOS or open-drain drivers with pull-up; must not float. |
| 6 GND | Power Ground | Main return path for load current and internal bias; bottom of resistor divider (for adjustable variant) connects here for optimal load regulation. |
| 8 I | Input Supply | Accepts 3.8–20 V input; reverse-polarity protected-blocks current flow if battery installed backward; no external diode required. |
| 9 Tab | Exposed Thermal Pad | Primary thermal path to PCB; must be soldered to solid GND copper area ≥300 mm² for RthJA = 66 K/W performance. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse Polarity Protection | Integrated MOSFET architecture blocks reverse current from Q to I during battery reversal-eliminates need for external series diode and associated 0.3–0.7 V drop. |
| Low-Noise Regulation | 24 µVRMS output noise achieved via internal reference bypass (BYP pin + 10 nF cap); enables clean power for precision analog and RF circuits. |
| Ultra-Low Quiescent Current | 30 µA typical IQ allows >10-year battery life in always-on automotive modules powered by 12 V lead-acid or LiFePO₄ backup cells. |
| Wide Input Range & Cranking Tolerance | Operates from 3.8 V input-supports engine cranking events where battery voltage drops below 6 V without dropout or reset. |
| AEC-Q100 Qualified | Qualified to Grade 1 (−40°C to +125°C) per AEC-Q100 Rev G; includes stress testing for HTOL, TC, UHAST, and ESD (2 kV HBM). |
Applications
| Body Control Module (BCM) | Advanced Driver Assistance Systems (ADAS) Camera Power |
|---|---|
|
Use Scenario: Powering microcontrollers, CAN transceivers, and sensor interfaces in vehicle body electronics with variable battery voltage and long sleep periods. IC Role / Device Role / Timing Role: Primary 3.3 V post-regulator supplying stable voltage to MCU core and peripherals after main DC/DC conversion. Use Value: 30 µA quiescent current minimizes parasitic drain during vehicle-off state; reverse polarity protection prevents field failures from incorrect battery jump-starts. |
Use Scenario: Providing ultra-low-noise 3.3 V supply to image sensors and ISP processors in surround-view or forward-facing cameras. IC Role / Device Role / Timing Role: Low-noise LDO placed immediately before sensor analog front-end to suppress switching noise from upstream buck converters. Use Value: 24 µVRMS noise ensures <1 LSB error in 12-bit image sensor ADCs; 270 mV dropout maintains regulation during 12 V bus sag during acceleration. |
| Telematics Control Unit (TCU) | Automotive Infotainment Processor Core Rail |
|
Use Scenario: Regulating power to LTE/GNSS modems and secure boot MCUs in connected car gateways requiring persistent network connectivity. IC Role / Device Role / Timing Role: Always-on 3.3 V rail supervisor with EN-controlled shutdown during deep sleep cycles. Use Value: <1 µA shutdown current extends backup battery life; AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle. |
Use Scenario: Delivering clean, stable 3.3 V to application processor I/O banks and DDR memory interfaces in head-unit designs. IC Role / Device Role / Timing Role: Secondary LDO filtering ripple from primary PMIC outputs to meet tight voltage tolerance and noise specs of SoC I/O domains. Use Value: 2.5% output accuracy guarantees compliance with JEDEC JESD8-12A I/O voltage limits; SENSE pin enables accurate regulation at point-of-load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, automotive-grade LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73333PDBVR | 300 mA, 3.3 V fixed, 40 µVRMS noise, 50 µA IQ, SOT-23-5 package, no reverse polarity protection. | Lacks reverse-battery protection and Kelvin sense; suitable for non-automotive or secondary rails where input polarity is guaranteed. | Select when board space is constrained and reverse protection is handled upstream; avoid in direct-battery-connected nodes. |
| TPS7B8733QKVURQ1 | 500 mA, 3.3 V fixed, 25 µVRMS noise, 35 µA IQ, thermal shutdown, but no SENSE pin or reverse polarity blocking. | Higher current capability but no Kelvin sensing or reverse-current blocking; requires external diode for reverse protection. | Prefer when higher output current is needed and PCB layout allows external protection components; less integrated than TLS203B0EJV33. |
Compared with TLV73333PDBVR and TPS7B8733QKVURQ1, TLS203B0EJV33 uniquely combines reverse polarity protection, Kelvin sense, and sub-30 µA quiescent current in a single AEC-Q100-qualified device-reducing BOM count and improving fault resilience in battery-connected automotive domains.
Availability
TLS203B0EJV33 is available at Aetrix Electronics and suitable for automotive body electronics, ADAS camera modules, telematics gateways, and infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLS203B0EJV33 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 industrial control solutions, with global manufacturing and quality certification to ISO/TS 16949.
The TLS203B0EJV33 belongs to Infineon's OPTIREG™ linear regulator family, designed specifically for demanding automotive post-regulation tasks where low noise, reverse-battery resilience, and ultra-low standby power are mandatory.
FAQ
What is the minimum input voltage required for regulation at 300 mA?
The TLS203B0EJV33 requires a minimum input voltage of 3.8 V to maintain 3.3 V output at 300 mA load, based on its 270 mV dropout specification. Below this, output voltage collapses linearly with input; operation is guaranteed down to 3.8 V per functional range Table 2 (P_4.2.1).
Can the SENSE pin be left unconnected in standard applications?
Yes-the SENSE pin may be directly connected to the Q (output) pin in standard configurations where PCB trace resistance between regulator and load is negligible (<10 mΩ). Leaving it unconnected risks instability; tying it to Q ensures proper error amplifier feedback and maintains specified load regulation accuracy.
Is an input capacitor mandatory, and what value is recommended?
An input capacitor is mandatory if the regulator is located >15 cm from the main battery filter or if input wiring exhibits significant inductance. A 1–10 µF ceramic capacitor placed close to Pin 8 (I) is recommended; typical value is 4.7 µF, rated ≥25 V, to suppress high-frequency noise and support transient response during cranking.
Does the TLS203B0EJV33 require a minimum load current to maintain regulation?
No-the TLS203B0EJV33 operates stably with zero load current. Its micropower design and internal biasing allow full regulation from 0 mA to 300 mA without external load resistors or minimum current requirements, making it ideal for intermittent-load automotive subsystems.
TLS203B0EJV33XUMA1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- OPTIREG™
- Package/Case:
- 8-SOIC (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):
- 20V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4 @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 12 mA
- PSRR:
- 65dB (120Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8-27
TLS203B0EJV33XUMA1 FAQ
1.How can I place an order for TLS203B0EJV33XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS203B0EJV33XUMA1 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 TLS203B0EJV33XUMA1 reliable?
The price and inventory of TLS203B0EJV33XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS203B0EJV33XUMA1 is usually 5 days.
3.What payment methods are accepted for TLS203B0EJV33XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS203B0EJV33XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS203B0EJV33XUMA1?
TLS203B0EJV33XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS203B0EJV33XUMA1 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 TLS203B0EJV33XUMA1?
For technical support, including TLS203B0EJV33XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS203B0EJV33XUMA1 requirements.
6.How does Aetrix verify that TLS203B0EJV33XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS203B0EJV33XUMA1 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 TLS203B0EJV33XUMA1 meets industry standards.
7.What is the process for return or replacement of TLS203B0EJV33XUMA1?
All TLS203B0EJV33XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS203B0EJV33XUMA1, 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 TLS203B0EJV33XUMA1 part is unused and in its original packaging.
Return procedure for TLS203B0EJV33XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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