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Infineon Technologies TLS115B0EJXUMA1
- Part No.:
- TLS115B0EJXUMA1
- Manufacturer:
- Infineon Technologies
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
TLS115B0EJXUMA1.pdf
- Description:
- IC REG LINEAR POS ADJ 150MA DSO8
- Quantity:
- Payment:
- Shipping:
Inventory:4,089
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Product details
Overview
TLS115B0EJXUMA1 from Infineon is a monolithic high-precision linear voltage tracking regulator in PG-DSO-8 package, delivering 150 mA output with ±0.5% tracking accuracy, 250 mV typical dropout at full load, and operation across -16 V to 45 V input range. It replicates an external reference voltage applied to ADJ with minimal error, enabling precision off-board sensor supply in automotive powertrain systems.
For engineers reviewing the TLS115B0EJXUMA1 datasheet, TLS115B0EJXUMA1 pinout, TLS115B0EJXUMA1 application, or TLS115B0EJXUMA1 equivalent, key selection criteria include its adjustable 2.0–14 V tracking range, reverse-polarity and short-circuit protection, AEC-Q100 qualification, and ceramic-capacitor stability - all critical for protected automotive sensor interfaces.
Technical Context
The TLS115B0EJXUMA1 implements a precision analog tracking architecture where the output voltage (VOUT) actively follows the voltage applied to the ADJ pin with <±0.5% deviation over temperature and load. Its internal pass transistor operates in linear mode with integrated thermal shutdown and current limiting.
It features dual-level fault protection: short-circuit protection to both GND and battery rail, plus reverse-polarity protection on IN. The EN pin enables digital control of regulation, while the exposed thermal pad supports junction-to-case thermal resistance of 18 K/W for sustained 150 mA operation at Tj ≤ 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output current | 150 mA max - sufficient to drive multiple off-board sensors or small actuators without external boost. |
| Tracking accuracy | ±0.5% - ensures replicated voltage stays within 10 mV of reference at 2.5 V, critical for ADC reference integrity. |
| Dropout voltage | 250 mV typ. @ 150 mA - enables stable regulation even when VIN drops to only 2.25 V above VADJ. |
| Input voltage range | -16 V to +45 V - supports reverse-battery immunity and wide automotive battery transients (ISO 7637-2 Pulse 5a). |
| Standby current | 0.1 µA typ. - allows always-on monitoring circuits to maintain ultra-low quiescent power during ECU sleep modes. |
| Adjust input range | 2.0 V to 14.0 V - matches common sensor reference outputs (e.g., 2.5 V, 3.3 V, 5 V) and permits programmable tracking via resistor divider. |
| Operating junction temp | -40°C to +150°C - qualified for under-hood placement in engine control units and transmission modules. |
Pinout & Package
Package: PG-DSO-8 (exposed thermal pad), RoHS-compliant, AEC-Q100 qualified. Pin 1 = OUT; Pin 3 = GND; Pin 5 = ADJ; Pin 7 = EN; Pin 8 = IN. Pins 2, 4, and 6 are not connected (N.C.). Exposed pad must be soldered to PCB GND plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Regulated output | Delivers tracked voltage to load; requires local 1 µF ceramic capacitor to GND for stability. |
| GND (Pin 3) | Power and signal reference | Primary return path for output current and internal bias; connects to exposed thermal pad. |
| ADJ (Pin 5) | Tracking reference input | Voltage applied here sets VOUT; minimum 2.0 V required for regulation; high-impedance node. |
| EN (Pin 7) | Digital enable control | Active-high logic input; pulls up to IN if unused; enables soft-start and disables output with <0.1 µA leakage. |
| IN (Pin 8) | Main power input | Accepts -16 V to +45 V; requires local 100 nF ceramic decoupling to GND near pin. |
Key Features
| Feature | Design Value |
|---|---|
| High-accuracy voltage tracking | ±0.5% tracking error over -40°C to 150°C and 1–150 mA load ensures sensor excitation stability across vehicle lifetime. |
| Reverse polarity protection | Withstands -16 V on IN without damage or latch-up - eliminates need for external series diode in battery-connected designs. |
| Short-circuit protection | Auto-recovering protection to both GND and battery rail prevents failure during wiring faults or connector shorts. |
| Ceramic capacitor compatibility | Stable with 1 µF/5 Ω ESR output cap - reduces BOM cost and board space vs. tantalum or aluminum electrolytics. |
| Internally controlled soft start | Prevents inrush current spikes during enable - avoids supply droop in shared rail systems with multiple regulators. |
Applications
| Automotive Engine Sensor Supply | Off-Board Exhaust Gas Sensor Interface |
|---|---|
|
Use Scenario: Powering upstream/downstream oxygen sensors (UEGO, NOx) mounted directly on exhaust manifolds. IC Role / Device Role / Timing Role: Precision voltage tracker replicating ECU's 2.5 V reference to sensor heater and signal conditioning circuitry. Use Value: Maintains ±0.5% heater voltage accuracy despite battery transients and under-hood temperature swings (-40°C to 150°C), ensuring calibrated gas measurement. |
Use Scenario: Supplying wideband lambda sensors located outside the main ECU enclosure, connected via shielded harness. IC Role / Device Role / Timing Role: Protected voltage replication IC isolating sensor supply from ECU rail noise and reverse-battery events. Use Value: Reverse-polarity and short-circuit protection eliminate field failures from harness miswiring; ceramic-cap stable output reduces EMI susceptibility. |
| Secondary ECU Voltage Rail | High-Precision Reference Distribution |
|
Use Scenario: Generating isolated 3.3 V or 5.0 V secondary rail for CAN transceivers and LIN interface ICs inside body control modules. IC Role / Device Role / Timing Role: Low-noise, low-dropout tracking regulator deriving clean supply from main 12 V rail or internal 5 V reference. Use Value: 250 mV dropout enables operation during cranking (VIN ≥ 6 V); 0.1 µA standby current supports low-power wake-on-CAN functionality. |
Use Scenario: Distributing a stable 2.5 V reference to multiple ADCs and analog front-ends in engine management ECUs. IC Role / Device Role / Timing Role: High-accuracy voltage follower ensuring identical reference potential across distributed sensing channels. Use Value: ±0.5% tracking accuracy minimizes channel-to-channel offset in multi-sensor data acquisition, improving air-fuel ratio control fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision automotive voltage tracking applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV70733PDBVR | Fixed 3.3 V LDO (not tracking); 200 mA; no reverse-polarity or short-to-battery protection. | Limited to fixed-output use cases; unsuitable for adjustable reference replication or harsh battery environments. | Select only for cost-sensitive non-automotive applications requiring simple 3.3 V regulation with no fault protection. |
| MAX1725EUT+T | Fixed 2.5 V LDO; 150 mA; ±2% accuracy; no AEC-Q100 qualification; no reverse-battery tolerance. | Not rated for automotive under-hood deployment; lacks tracking capability and robust fault handling. | Consider only for industrial test equipment or lab prototypes where environmental stress and safety margins are lower. |
Compared with TLV70733PDBVR and MAX1725EUT+T, TLS115B0EJXUMA1 uniquely combines adjustable tracking, ±0.5% accuracy, reverse-polarity immunity, and AEC-Q100 qualification - making it the only choice for production automotive sensor supply where reference fidelity and fault resilience are mandatory.
Availability
TLS115B0EJXUMA1 is available at Aetrix Electronics and suitable for automotive engine control units, exhaust aftertreatment systems, and battery management subsystems requiring stable component supply under extended temperature and transient stress conditions.
Supply support for TLS115B0EJXUMA1 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 automotive qualification infrastructure.
TLS115B0EJXUMA1 belongs to the OPTIREG™ linear regulator product line, designed specifically for high-reliability automotive voltage tracking applications where precision, protection, and AEC-Q100 compliance are non-negotiable.
FAQ
What is the minimum reference voltage required at the ADJ pin for regulation?
The TLS115B0EJXUMA1 requires a minimum of 2.0 V at the ADJ pin to initiate and sustain regulation. Below this threshold, the output enters dropout or disables entirely. This value is specified in the functional range table (Section 3.2.2) and verified across -40°C to 150°C junction temperature.
Can the device operate with input voltage below ground?
Yes - the TLS115B0EJXUMA1 supports input voltages down to -16 V relative to GND, enabling reverse-battery protection without external components. This capability is validated per AEC-Q100 stress testing and documented in the absolute maximum ratings table (Section 3.1.1).
Is an external capacitor required on the ADJ pin?
No external capacitor is required on the ADJ pin. The ADJ input is high-impedance and intended for direct connection to a stable reference voltage or resistive divider. Adding capacitance may degrade transient response and is not recommended per Section 4.9 and Figure 23 in the datasheet.
How does the EN pin behave during power-up?
The EN pin has an internal pull-down; the device remains disabled until EN is driven ≥2.0 V. When enabled, it initiates internally controlled soft-start, ramping VOUT over ~1 ms to limit inrush current - confirmed in Section 4.6 and Figure 21 of the datasheet.
TLS115B0EJXUMA1 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:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 2V
- Voltage - Output (Max):
- 14V
- Voltage Dropout (Max):
- 0.5V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 90 µA
- Current - Supply (Max):
- 14 mA
- PSRR:
- 85dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Reverse Polarity, Short Circuit
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PG-DSO-8
TLS115B0EJXUMA1 FAQ
1.How can I place an order for TLS115B0EJXUMA1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLS115B0EJXUMA1 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 TLS115B0EJXUMA1 reliable?
The price and inventory of TLS115B0EJXUMA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLS115B0EJXUMA1 is usually 5 days.
3.What payment methods are accepted for TLS115B0EJXUMA1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLS115B0EJXUMA1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLS115B0EJXUMA1?
TLS115B0EJXUMA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLS115B0EJXUMA1 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 TLS115B0EJXUMA1?
For technical support, including TLS115B0EJXUMA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLS115B0EJXUMA1 requirements.
6.How does Aetrix verify that TLS115B0EJXUMA1 is sourced from the original manufacturer or authorized distributors?
All TLS115B0EJXUMA1 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 TLS115B0EJXUMA1 meets industry standards.
7.What is the process for return or replacement of TLS115B0EJXUMA1?
All TLS115B0EJXUMA1 units undergo pre-shipment inspection (PSI). If there is an issue with TLS115B0EJXUMA1, 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 TLS115B0EJXUMA1 part is unused and in its original packaging.
Return procedure for TLS115B0EJXUMA1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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