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Infineon Technologies TLS203B0EJV50XUMA1
- Part No.:
- TLS203B0EJV50XUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS203B0EJV50XUMA1.pdf
- Description:
- IC REG LIN 5V 300MA 8DSO E-PAD
- Quantity:
- Payment:
- Shipping:
Inventory:4,128
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Product details
Overview
TLS203B0EJV50XUMA1 from Infineon Technologies is a low-dropout, low-noise linear voltage regulator delivering 5.0 V at up to 300 mA with 290 mV dropout, 42 µVRMS output noise (10 Hz–100 kHz), and 30 µA quiescent current. It features reverse polarity protection, overcurrent/overtemperature shutdown, and operates from 5.5 V to 20 V input - designed as a post-regulator in automotive battery-powered systems requiring stable 5 V supply under load transients.
For engineers reviewing the TLS203B0EJV50XUMA1 datasheet, TLS203B0EJV50XUMA1 pinout, TLS203B0EJV50XUMA1 application, or TLS203B0EJV50XUMA1 equivalent, key selection criteria include its AEC-Q100 qualification, Kelvin sense capability for precision regulation, exposed-pad thermal performance, and compatibility with ceramic, tantalum, or aluminum output capacitors ≥3.3 µF without series ESR requirements.
Technical Context
The TLS203B0EJV50XUMA1 implements a micropower error amplifier with internal voltage reference and saturation-controlled pass transistor, enabling stable regulation down to 2.3 V internal supply headroom. Its architecture integrates reverse-battery protection via internal diode emulation and eliminates external protection diodes by blocking reverse current at both input and output terminals.
It supports low-noise operation via external 10 nF bypass capacitor on the BYP pin, reducing output noise to 42 µVRMS across 10 Hz–100 kHz bandwidth. The SENSE pin enables Kelvin sensing for remote load regulation, compensating for trace resistance drops up to several hundred milliohms between Q and load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0 V ±2.5% over full temperature and load range - ensures reliable logic-level compatibility with automotive microcontrollers and sensors. |
| Max Output Current | 300 mA continuous - sufficient to power multiple CAN transceivers, MCU cores, or sensor signal chains in distributed ECUs. |
| Dropout Voltage | 290 mV at 300 mA - enables operation with input as low as 5.29 V, critical for cold-crank scenarios in 12 V automotive systems. |
| Output Noise | 42 µVRMS (10 Hz–100 kHz) with 10 nF BYP cap - meets stringent analog front-end and ADC reference stability requirements. |
| Quiescent Current | 30 µA - minimizes standby drain on vehicle battery during ignition-off periods, supporting >10-year parasitic load budgets. |
| Shutdown Current | <1 µA - enables deep-sleep modes in always-on domains such as telematics or body control modules. |
| Input Voltage Range | 5.5 V to 20 V - accommodates wide automotive supply variations including load dump (up to 20 V) and cold-crank (down to 5.5 V). |
Pinout & Package
Package: PG-DSO-8 exposed-pad (RoHS-compliant, green product), with thermal pad (Pin 9) requiring solder connection to PCB ground plane for optimal thermal dissipation (RthJA = 52 K/W with 600 mm² heatsink area).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Regulated output | Supplies 5 V to load; requires ≥3.3 µF output capacitor for stability; connects to SENSE in standard configuration. |
| 2 SENSE | Output voltage sense input | Enables Kelvin sensing for remote load regulation; eliminates voltage drop error caused by PCB trace resistance between Q and load. |
| 3,7 NC | No connect | Internally unconnected; may be tied to GND or left floating per layout constraints. |
| 4 BYP | Bypass reference node | Accepts 10 nF capacitor to Q to reduce reference noise; clamped to ±0.6 V internally; must be left open if unused. |
| 5 EN | Enable control | Active-high logic input (3.3 V/5 V compatible); pulls output off when low; must not float - tie to VI if unused. |
| 6 GND | Power ground | Reference for all internal circuitry; must be connected to exposed pad (Pin 9) and system ground plane. |
| 8 I | Input supply | Accepts 5.5–20 V input; includes reverse-polarity protection - blocks reverse current if battery is misconnected. |
| 9 Tab | Thermal pad / GND | Exposed copper pad for heat dissipation; must be soldered to PCB ground plane and electrically tied to Pin 6. |
Key Features
| Feature | Design Value |
|---|---|
| Kelvin sense capability | SENSE pin allows remote feedback placement at load, eliminating regulation error from PCB trace IR drop - critical for high-accuracy sensor power rails. |
| Reverse polarity protection | Internal circuitry blocks reverse current flow during battery reversal, protecting both regulator and downstream loads without external diodes. |
| Low-noise bypass architecture | External 10 nF capacitor on BYP pin reduces output noise to 42 µVRMS - enables clean power for precision ADCs, PLLs, and RF receivers. |
| Ceramic capacitor compatibility | Stable with ≥3.3 µF ceramic output capacitors and zero ESR requirement - simplifies layout and eliminates need for bulky tantalum or aluminum electrolytics. |
| AEC-Q100 qualified | Qualified to Grade 1 (-40°C to +125°C Tj) for automotive applications - validated for reliability in engine bay, infotainment, and ADAS subsystems. |
Applications
| Engine Control Unit (ECU) Power Rail | Automotive Camera Module Supply |
|---|---|
|
Use Scenario: Powers microcontroller core, CAN interface, and analog sensors in engine management systems where supply must remain stable during cranking and load dump events. IC Role / Device Role / Timing Role: Post-regulator providing clean, regulated 5 V after main DC-DC converter - maintains voltage accuracy despite input ripple and transient dips. Use Value: 290 mV dropout enables operation down to 5.29 V input, ensuring uninterrupted function during 6 V cold-crank; 30 µA quiescent current extends battery life in sleep mode. |
Use Scenario: Supplies image sensor and ISP in rear-view or surround-view camera modules requiring ultra-low noise to prevent pixel pattern noise and SNR degradation. IC Role / Device Role / Timing Role: Low-noise LDO delivering 5 V to analog sensor front-end and clock distribution circuitry - suppresses switching noise from adjacent DC-DC converters. Use Value: 42 µVRMS output noise (with 10 nF BYP cap) meets <50 µVRMS requirement for 12-bit+ image sensors; Kelvin sense ensures stable voltage at sensor die despite flex cable resistance. |
| Body Control Module (BCM) Always-On Domain | Telematics Control Unit (TCU) Backup Power |
|
Use Scenario: Provides always-on 5 V rail for real-time clock, wake-up logic, and CAN transceiver in BCMs that monitor door status and alarm triggers during vehicle sleep. IC Role / Device Role / Timing Role: Micropower regulator maintaining regulated output while drawing only 30 µA - enables multi-year battery hold-up without excessive parasitic drain. Use Value: <1 µA shutdown current allows complete disablement of non-critical circuits; reverse polarity protection prevents damage during service battery swaps. |
Use Scenario: Supplies GPS module and secure element in TCUs requiring guaranteed power during main battery disconnect or crash event. IC Role / Device Role / Timing Role: Fault-tolerant post-regulator with overtemperature and overcurrent protection - sustains operation during short-term thermal overload or load fault conditions. Use Value: Integrated thermal shutdown prevents latch-up during enclosure overheating; stable with 3.3 µF ceramic capacitor enables compact, high-reliability backup power design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, AEC-Q100 qualified LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV76650QWDRBRQ1 | 500 mA output, 250 mV dropout at 500 mA, 40 µVRMS noise, 25 µA IQ, DSBGA-8 package | Higher current capacity but smaller thermal pad; no Kelvin sense pin; lower max input voltage (18 V) | Select when higher output current is needed and board space is constrained; verify thermal margin without exposed pad. |
| NCP1117ST50T3G | 1 A output, 1.2 V dropout at 800 mA, 400 µVRMS noise, 6 mA IQ, SOT-223 package | Higher quiescent current limits battery-life suitability; no AEC-Q100 qualification; no reverse polarity or Kelvin sense | Use only in non-automotive, cost-sensitive industrial applications where noise and low IQ are not critical. |
Compared with TLV76650QWDRBRQ1, TLS203B0EJV50XUMA1 offers superior noise performance with Kelvin sensing and broader input range, while NCP1117ST50T3G lacks automotive qualification and fails to meet low-noise/low-IQ requirements for modern ECU domains.
Availability
TLS203B0EJV50XUMA1 is available at Aetrix Electronics and suitable for automotive engine control units, camera modules, and body control modules requiring stable component supply with AEC-Q100 compliance, low-noise regulation, and extended temperature operation.
Supply support for TLS203B0EJV50XUMA1 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 R&D and manufacturing infrastructure.
The TLS203B0EJV50XUMA1 belongs to Infineon's OPTIREG™ linear regulator product line, engineered specifically for automotive post-regulation applications demanding ultra-low noise, micropower operation, and robust fault protection in harsh environments.
FAQ
What is the minimum output capacitance required for stability?
The TLS203B0EJV50XUMA1 requires a minimum 3.3 µF output capacitor for stability when no bypass capacitor is used on the BYP pin. If a 10 nF capacitor is added between Q and BYP to reduce noise, the minimum output capacitance increases to 6.8 µF. Ceramic, tantalum, or aluminum capacitors are supported - no ESR requirement applies.
Does the device require external protection diodes?
No. The TLS203B0EJV50XUMA1 integrates reverse polarity protection at the input pin, preventing reverse current flow during battery misconnection. It also blocks reverse current from output to input, eliminating the need for external series diodes or protection circuits in automotive battery-supplied systems.
How does the SENSE pin improve regulation accuracy?
The SENSE pin connects directly to the load side of PCB traces, allowing the error amplifier to regulate voltage at the actual load point rather than at the Q pin. This compensates for voltage drop across trace resistance (e.g., 100 mΩ × 300 mA = 30 mV), improving output accuracy by up to ±30 mV in high-current or long-trace layouts.
Is the exposed thermal pad electrically isolated?
No. The exposed pad (Pin 9) is internally connected to GND and must be soldered to the PCB ground plane and electrically tied to Pin 6 (GND). Failure to do so degrades thermal performance significantly - RthJA rises from 52 K/W (with 600 mm² heatsink) to 155 K/W (footprint-only), risking thermal shutdown under 300 mA load.
TLS203B0EJV50XUMA1 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):
- 5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.41V @ 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
TLS203B0EJV50XUMA1 FAQ
1.How can I place an order for TLS203B0EJV50XUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS203B0EJV50XUMA1 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 TLS203B0EJV50XUMA1 reliable?
The price and inventory of TLS203B0EJV50XUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS203B0EJV50XUMA1 is usually 5 days.
3.What payment methods are accepted for TLS203B0EJV50XUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS203B0EJV50XUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS203B0EJV50XUMA1?
TLS203B0EJV50XUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS203B0EJV50XUMA1 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 TLS203B0EJV50XUMA1?
For technical support, including TLS203B0EJV50XUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS203B0EJV50XUMA1 requirements.
6.How does Aetrix verify that TLS203B0EJV50XUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS203B0EJV50XUMA1 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 TLS203B0EJV50XUMA1 meets industry standards.
7.What is the process for return or replacement of TLS203B0EJV50XUMA1?
All TLS203B0EJV50XUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS203B0EJV50XUMA1, 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 TLS203B0EJV50XUMA1 part is unused and in its original packaging.
Return procedure for TLS203B0EJV50XUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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