My Inquiry
My Account
Infineon Technologies TLE4254GAXUMA4
- Part No.:
- TLE4254GAXUMA4
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLE4254GAXUMA4.pdf
- Description:
- IC REG LDO ADJ 70MA 8DSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,464
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLE4254GAXUMA4 from Infineon Technologies is a high-accuracy, low-dropout voltage tracking regulator in PG-DSO-8 package, designed for automotive sensor supply under harsh conditions. It delivers 70 mA output current with ±1.5% output tracking tolerance to reference, 0.2 V typical dropout at full load, and operates across -40 °C to 150 °C junction temperature. Used to track main system regulators (e.g., 5 V) in powertrain sensors.
For engineers reviewing the TLE4254GAXUMA4 datasheet, TLE4254GAXUMA4 pinout, TLE4254GAXUMA4 application, or TLE4254GAXUMA4 equivalent, key selection criteria include adjustable output down to 2.0 V, 1 µF ceramic capacitor stability, reverse polarity protection, short-circuit robustness to GND/battery, and AEC-Q100 qualification for automotive use.
Technical Context
The TLE4254GAXUMA4 implements a precision tracking architecture where the output voltage follows an external reference applied to the EN/ADJ pin with typ. ±1.5% tolerance. Its internal error amplifier compares the reference against feedback from the FB pin (in GA/EJA variants), enabling proportional scaling-output can be set equal to, lower than, or higher than the reference via resistor divider.
It integrates comprehensive protection: overtemperature shutdown, short-circuit protection to GND and battery, reverse-polarity input protection, and ultra-low OFF-mode current (<10 µA). Input voltage range spans -20 V to +45 V, supporting load-dump and cold-crank scenarios common in 12 V automotive systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 70 mA max - sufficient to power multiple automotive sensors (e.g., pressure, position) without external buffering. |
| Output tracking tolerance | ±1.5% - ensures precise voltage replication of master regulator, critical for ADC reference stability in sensor signal chains. |
| Dropout voltage | 0.2 V typ. @ 70 mA - enables regulation down to VI ≥ VOUT + 0.2 V, supporting operation during low-battery cranking (e.g., 6.5 V input for 6.3 V output). |
| Input voltage range | -20 V to +45 V - withstands reverse battery connection and ISO 7637-2 pulse 1/2/5a transients without external protection diodes. |
| Output capacitor | 1 µF ceramic - eliminates need for bulky electrolytics; reduces PCB area and improves reliability in high-vibration environments. |
| Junction temperature | -40 °C to +150 °C - qualified for under-hood placement near engines or transmissions per AEC-Q100 Grade 0. |
| Quiescent current (OFF) | <10 µA - extends battery life in always-on modules (e.g., body control units in sleep mode). |
Pinout & Package
Package: PG-DSO-8 (standard variant, no exposed pad); RoHS-compliant, thermally enhanced for automotive under-hood mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 Q | Tracker output | Regulated output node; requires local 1 µF ceramic capacitor to GND with ESR ≤5 Ω for stability. |
| 2,3,6,7 GND | Ground reference | Four dedicated ground pins reduce impedance; must be interconnected on PCB and tied to heatsink area for thermal management. |
| 4 FB | Feedback input | Inverting input of internal error amplifier; direct connection to Q sets VOUT ≤ VADJ; resistor divider enables VOUT > VADJ proportionally. |
| 5 EN/ADJ | Adjust/enable input | Reference voltage input (2.0–45 V); high logic enables regulator; low disables it - dual function simplifies control interface. |
| 8 I | Input supply | Main IC supply; requires local decoupling capacitor to suppress line transients and improve PSRR. |
Key Features
| Feature | Design Value |
|---|---|
| Tracking accuracy | ±1.5% output-to-reference tolerance - maintains sensor biasing accuracy despite main regulator drift or aging. |
| Protection integration | Reverse polarity, short-circuit (GND/battery), and overtemperature - eliminates need for discrete protection components in BOM. |
| Low-power shutdown | <10 µA quiescent current in OFF state - meets automotive OEM requirements for <100 µA system standby current. |
| Capacitor compatibility | Stable with 1 µF ceramic output cap (ESR ≤5 Ω) - avoids lifetime degradation and microphonics issues of tantalum/electrolytic caps. |
| Automotive qualification | AEC-Q100 Grade 0 (−40 °C to +150 °C) - certified for direct engine compartment mounting without derating. |
Applications
| Engine Coolant Temperature Sensor Supply | Transmission Speed Sensor Biasing |
|---|---|
|
Use Scenario: Powers NTC-based coolant temperature sensor in engine bay, exposed to thermal cycling and vibration. IC Role / Device Role / Timing Role: Precision tracking regulator replicating main ECU 5 V rail to ensure stable sensor excitation voltage. Use Value: ±1.5% tracking tolerance prevents ADC code shift due to reference drift, maintaining ±0.5 °C temperature measurement accuracy. |
Use Scenario: Supplies Hall-effect speed sensor in automatic transmission housing, subject to oil immersion and shock. IC Role / Device Role / Timing Role: Low-dropout regulator delivering 5 V at 30 mA while tracking upstream 5 V supply under cranking (6.5 V min input). Use Value: 0.2 V dropout enables uninterrupted operation during cold-crank events where battery dips to 6.0 V. |
| Brake Pressure Sensor Interface | Throttle Position Sensor Conditioning |
|
Use Scenario: Provides regulated excitation to piezoresistive brake pressure sensor in ABS module near wheel well. IC Role / Device Role / Timing Role: Protected linear regulator with reverse-polarity and short-circuit resilience for safety-critical braking circuits. Use Value: Integrated reverse polarity protection eliminates need for external series diode, reducing voltage loss and heat generation. |
Use Scenario: Supplies potentiometric throttle position sensor in intake manifold, requiring stable 5 V reference across wide temperature range. IC Role / Device Role / Timing Role: High-accuracy tracking regulator operating from 12 V battery, compensating for main rail variation during alternator load changes. Use Value: -40 °C to +150 °C operation ensures consistent sensor linearity across full vehicle thermal envelope without calibration drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71718PDBVR | Fixed 1.8 V output; no tracking capability; 150 mA output; 0.3 V dropout; only supports 2.5–5.5 V input. | Lacks adjustable tracking and automotive-grade temp range; suitable only for non-automotive, fixed-VOUT low-power apps. | Select only if fixed 1.8 V output suffices and AEC-Q100 qualification is unnecessary. |
| MAX1725EUT+T | Fixed 3.3 V output; no tracking; 150 mA; 0.25 V dropout; -40 °C to +85 °C industrial temp range. | No reverse polarity or battery short-circuit protection; not AEC-Q100 qualified; limited thermal capability. | Acceptable only for cabin electronics with benign environment and no safety-critical fault coverage required. |
Compared with TLV71718PDBVR and MAX1725EUT+T, the TLE4254GAXUMA4 uniquely combines adjustable tracking, AEC-Q100 Grade 0 qualification, integrated reverse-polarity protection, and 150 °C operation-making it the sole choice for under-hood sensor supply where reference fidelity and fault resilience are mandatory.
Availability
TLE4254GAXUMA4 is available at Aetrix Electronics and suitable for engine control units, transmission control modules, and brake-by-wire systems requiring stable component supply across extended automotive lifecycles.
Supply support for TLE4254GAXUMA4 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 products.
The TLE4254 belongs to Infineon's OPTIREG™ linear family, engineered specifically for high-reliability automotive sensor supply-emphasizing tracking accuracy, fault resilience, and extended temperature operation.
FAQ
What is the minimum reference voltage supported at the EN/ADJ pin?
The TLE4254GAXUMA4 supports a minimum reference voltage of 2.0 V at the EN/ADJ pin, enabling output voltages as low as 2.0 V when FB is connected directly to Q. This allows compatibility with low-voltage microcontrollers and modern sensor interfaces requiring sub-3.3 V biasing.
Can the TLE4254GAXUMA4 operate with a 1 µF ceramic capacitor only, or is an additional bulk capacitor required?
The device is fully stable with only a 1 µF X7R/X5R ceramic capacitor placed within 2 mm of the Q and GND pins, provided its ESR is ≤5 Ω. No bulk electrolytic capacitor is required-this simplifies layout, improves reliability, and eliminates ESR-related aging concerns in high-temperature environments.
Does the TLE4254GAXUMA4 provide status indication of output faults?
No-TLE4254GAXUMA4 is the GA version, which lacks the ST (status) pin. Only GS and EJS variants feature an open-collector status output indicating overvoltage/undervoltage faults. For fault reporting, select TLE4254GS or TLE4254EJS instead.
How does the TLE4254GAXUMA4 handle reverse battery connection?
The IC incorporates integrated reverse-polarity protection on the I pin, allowing it to withstand -20 V input continuously without damage or latch-up. This eliminates the need for external series diodes or MOSFET-based protection circuits in automotive battery-connected designs.
TLE4254GAXUMA4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Infineon Technologies
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- Tracking
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 70mA
- Current - Output:
- 70mA
- Current - Quiescent (Iq):
- 80 µA
- Current - Supply (Max):
- 15 mA
- PSRR:
- 60dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLE4254GAXUMA4 FAQ
1.How can I place an order for TLE4254GAXUMA4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4254GAXUMA4 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 TLE4254GAXUMA4 reliable?
The price and inventory of TLE4254GAXUMA4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4254GAXUMA4 is usually 5 days.
3.What payment methods are accepted for TLE4254GAXUMA4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4254GAXUMA4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4254GAXUMA4?
TLE4254GAXUMA4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4254GAXUMA4 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 TLE4254GAXUMA4?
For technical support, including TLE4254GAXUMA4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4254GAXUMA4 requirements.
6.How does Aetrix verify that TLE4254GAXUMA4 is sourced from the original manufacturer or authorized distributors?
All TLE4254GAXUMA4 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 TLE4254GAXUMA4 meets industry standards.
7.What is the process for return or replacement of TLE4254GAXUMA4?
All TLE4254GAXUMA4 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4254GAXUMA4, 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 TLE4254GAXUMA4 part is unused and in its original packaging.
Return procedure for TLE4254GAXUMA4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLE4254GAXUMA4 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
