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Infineon Technologies TLE4253EXUMA1
- Part No.:
- TLE4253EXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLE4253EXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 250MA DSO8
- Quantity:
- Payment:
- Shipping:
Inventory:2,748
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Product details
Overview
TLE4253EXUMA1 from Infineon is a monolithic high-precision voltage tracking regulator in PG-DSO-8 exposed pad package, designed to replicate an external reference voltage with ±1.5% tracking tolerance. It delivers up to 250 mA output current, supports input voltages from −42 V to +45 V, and operates across −40°C to +150°C junction temperature-enabling use in engine control unit (ECU) sensor supply rails under automotive load-dump and reverse-battery conditions.
For engineers reviewing the TLE4253EXUMA1 datasheet, TLE4253EXUMA1 pinout, TLE4253EXUMA1 application, or TLE4253EXUMA1 equivalent, key selection criteria include its dual-function EN/ADJ input, ceramic-capacitor stability, low 25 µA shutdown current, and integrated short-circuit protection to battery/GND-critical for always-on automotive subsystems requiring AEC-Q100 compliance.
Technical Context
The TLE4253EXUMA1 implements a precision error amplifier with inverting feedback (FB pin) and a high-side pass transistor controlled via saturation logic. Its tracking architecture compares the ADJ/EN input voltage against an internal 1.4 V reference, enabling proportional output scaling-e.g., 5 V reference yields 5 V output (±1.5%), while 2.5 V reference yields 2.5 V output (±1.5%).
Protection circuitry includes thermal shutdown triggered at Tj ≥ 165°C, reverse-polarity hardening up to −42 V on VI, and foldback current limiting during output short-to-battery. The exposed pad (EP) provides RthJC = 9 K/W, reducing thermal resistance by >75% versus standard DSO-8 variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 250 mA max - sufficient to power multiple Hall-effect or pressure sensors without external boost stages. |
| Tracking tolerance | ±1.5% - ensures sensor supply matches main rail accuracy, minimizing measurement offset in closed-loop systems. |
| Input voltage range | −42 V to +45 V - withstands ISO 7637-2 pulse 5a (load dump) and reverse-battery transients without external TVS. |
| Quiescent current (OFF) | 25 µA typical - enables <1 µA system standby current when paired with microcontroller-controlled EN/ADJ. |
| Thermal resistance (J–C) | 9 K/W - allows 2.5 W continuous dissipation at ΔT = 22.5°C above PCB heatsink, eliminating need for external heatsinks. |
| Output capacitor | 10 µF ceramic (ESR ≤ 5 Ω) - eliminates electrolytic capacitors, improving lifetime and cold-start reliability. |
| Junction temperature | −40°C to +150°C - qualified per AEC-Q100 Grade 0, supporting placement near hot ECU components. |
Pinout & Package
Package: PG-DSO-8 exposed pad (EP), RoHS-compliant, with thermal pad soldered to PCB ground plane for optimal heat transfer.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Q) | Tracker output | Regulated output node; requires local 10 µF ceramic capacitor with ESR ≤ 5 Ω to ensure stability. |
| 2, 3, 7 (n.c.) | Not connected | No internal connection; must be externally tied to GND for mechanical stability and EMI reduction. |
| 4 (FB) | Inverting feedback input | Connect directly to Q for unity-gain tracking; use resistor divider for gain >1 (e.g., 5 V ref → 8 V out). |
| 5 (EN/ADJ) | Enable & reference input | Active-high enable; reference voltage applied here sets output (2.0–45 V range); <2.0 V disables regulator. |
| 6 (GND) | Ground reference | Primary GND connection; must be low-inductance path to EP and system ground plane. |
| 8 (I) | Input supply | High-voltage input rail; requires local 100 nF ceramic capacitor close to pin for transient immunity. |
| EP (exposed pad) | Thermal & electrical ground | Must be soldered to ≥300 mm² copper area tied to GND; provides RthJC = 9 K/W and ESD discharge path. |
Key Features
| Feature | Design Value |
|---|---|
| Proportional voltage tracking | Output scales linearly with ADJ/EN voltage (e.g., 3.3 V ref → 3.3 V out), enabling flexible multi-rail sensor biasing from single master regulator. |
| Integrated reverse-polarity protection | Withstands −42 V on VI indefinitely-eliminates need for external series diode or MOSFET in battery-connected applications. |
| Short-circuit protection | Auto-recovering foldback current limit protects against sustained shorts to battery (+45 V) or GND (−42 V) without latch-up. |
| Low-ESR ceramic stability | Stable with 10 µF X7R/X5R ceramics (ESR ≤ 5 Ω), removing aging-prone electrolytics and enabling compact 2-layer PCB layouts. |
| AEC-Q100 qualification | Grade 0 (−40°C to +150°C), including HTOL, TC, UHAST, and ESD testing-certified for safety-critical power domains in ASIL-B systems. |
Applications
| Engine Control Unit Sensor Supply | Automotive Camera Power Rail |
|---|---|
|
Use Scenario: Powering crankshaft position, camshaft, and knock sensors in gasoline/diesel ECUs exposed to under-hood temperatures up to 150°C and load-dump transients. IC Role / Device Role / Timing Role: Precision voltage tracker replicating main 5 V rail to ensure sensor ADC reference integrity and minimize ratiometric error. Use Value: ±1.5% tracking tolerance maintains <0.5% total system measurement error across temperature, critical for precise fuel injection timing. |
Use Scenario: Supplying image sensor and ISP core voltage in rear-view or surround-view cameras mounted near exhaust or brake systems. IC Role / Device Role / Timing Role: Low-noise, thermally robust post-regulator delivering stable 3.3 V from vehicle 12 V bus, rejecting ripple from switching DC/DC converters. Use Value: Exposed pad thermal design sustains 250 mA at 150°C ambient, preventing thermal shutdown during continuous video capture. |
| Body Control Module (BCM) Always-On Rail | Electric Power Steering (EPS) Diagnostic Interface |
|
Use Scenario: Providing always-on 2.5 V supply to CAN transceiver and real-time clock in BCM during vehicle sleep mode (ignition OFF). IC Role / Device Role / Timing Role: Ultra-low-quiescent-current tracker enabled only when wake-up signal is present, minimizing parasitic drain. Use Value: 25 µA shutdown current extends battery life beyond ISO 16750-2 requirements for 14-day parking duration. |
Use Scenario: Isolating diagnostic communication power in EPS modules where ECU must verify motor driver health during ignition cycles. IC Role / Device Role / Timing Role: Fault-tolerant tracker supplying isolated 5 V to diagnostic UART interface, surviving reverse-battery and jump-start events. Use Value: −42 V reverse-polarity rating prevents latch-up during roadside jump-starts, ensuring diagnostic port remains functional after recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage tracking regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV71725PDQNR | Fixed 2.5 V output; no tracking capability; max 150 mA; VI ≤ 5.5 V; no reverse-polarity or short-to-battery protection. | Limited to low-voltage, non-automotive applications (e.g., portable instrumentation); unsuitable for 12 V/24 V battery systems. | Select only for cost-sensitive consumer designs with stable 3.3 V input and no fault transients. |
| LM2936QMM-5.0/NOPB | Fixed 5.0 V output; 50 mA output; VI ≤ 40 V; no EN/ADJ flexibility; lacks short-to-battery protection and AEC-Q100 qualification. | Acceptable for non-safety-critical interior modules (e.g., HVAC control) but fails load-dump immunity and thermal specs for engine bay use. | Use only where full AEC-Q100 compliance and 250 mA drive are not required. |
Compared with TLV71725PDQNR and LM2936QMM-5.0/NOPB, TLE4253EXUMA1 uniquely combines adjustable tracking, 250 mA drive, −42 V reverse tolerance, and AEC-Q100 Grade 0 qualification-making it the sole option for high-reliability engine bay sensor supplies requiring dynamic reference scaling.
Availability
TLE4253EXUMA1 is available at Aetrix Electronics and suitable for engine control units, automotive camera modules, body control modules, and electric power steering systems requiring stable component supply under harsh automotive environmental and electrical stress conditions.
Supply support for TLE4253EXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive ICs, and industrial control solutions, with global manufacturing and AEC-Q100 validation infrastructure.
TLE4253EXUMA1 belongs to Infineon's OPTIREG™ linear regulator product line, engineered specifically for automotive subsystems demanding high accuracy, fault resilience, and extended temperature operation without external protection components.
FAQ
What is the minimum reference voltage required at the EN/ADJ pin for regulation?
The TLE4253EXUMA1 requires a minimum of 2.0 V applied to the EN/ADJ pin to initiate regulation. Below this threshold, the device enters shutdown mode with 25 µA quiescent current. This 2.0 V lower limit is specified in the functional range table (P_4.2.5) and verified across −40°C to +150°C.
Can the TLE4253EXUMA1 track a reference voltage higher than 5 V?
Yes-the EN/ADJ pin accepts reference voltages up to 45 V, enabling output tracking of high-side references such as 8 V or 12 V rails. When used with a resistor divider on FB, the output can exceed the reference voltage (e.g., 5 V ref → 8 V out), as confirmed in Section 5 "Application Information" of the datasheet.
Is external compensation required for stability with ceramic output capacitors?
No external compensation is needed. The TLE4253EXUMA1 is internally compensated for stability with 10 µF ceramic capacitors having ESR ≤ 5 Ω (measured at 10 kHz), as validated in the functional range (P_4.2.3/P_4.2.4) and application circuits in the datasheet.
How is thermal performance affected if the exposed pad is not soldered to PCB ground?
Without soldering the exposed pad to a ≥300 mm² GND copper area, RthJA degrades from 64 K/W to 169 K/W, reducing maximum sustainable power dissipation from 2.5 W to <0.5 W at 150°C ambient-causing thermal shutdown under 250 mA load. This is quantified in Table 3 (P_4.3.7–P_4.3.10).
TLE4253EXUMA1 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:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 40V
- Voltage - Output (Min/Fixed):
- Tracking
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 200mA
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 150 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
TLE4253EXUMA1 FAQ
1.How can I place an order for TLE4253EXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLE4253EXUMA1 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 TLE4253EXUMA1 reliable?
The price and inventory of TLE4253EXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLE4253EXUMA1 is usually 5 days.
3.What payment methods are accepted for TLE4253EXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLE4253EXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLE4253EXUMA1?
TLE4253EXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLE4253EXUMA1 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 TLE4253EXUMA1?
For technical support, including TLE4253EXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLE4253EXUMA1 requirements.
6.How does Aetrix verify that TLE4253EXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLE4253EXUMA1 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 TLE4253EXUMA1 meets industry standards.
7.What is the process for return or replacement of TLE4253EXUMA1?
All TLE4253EXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLE4253EXUMA1, 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 TLE4253EXUMA1 part is unused and in its original packaging.
Return procedure for TLE4253EXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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