TLS115D0LDXUMA1 - 150mA Tracking LDO, 2V Adj, AEC-Q100 | Infineon
MPN: TLS115D0LDXUMA1 ✓ NakahandaTLS115D0LDXUMA1 Ulas
What is an LDO (Low-Dropout) linear regulator? An LDO is a type of voltage regulator that maintains a stable output voltage even when the input voltage is very close to the output voltage, with a small dropout differential between VIN and VOUT. As a linear regulator, it belongs to the broader voltage regulator family, which sits within the power management integrated circuit (PMIC) hierarchy. Tracking regulators such as the TLS115D0LD are specialized LDOs whose output voltage follows a reference voltage, scaled by external resistors. This makes them ideal for powering off-board sensors that must share a ratiometric reference with the main ECU supply.
Key features include a low dropout voltage of approximately 200 mV at full load, an enable pin for power sequencing, a Power Good diagnostic output, and integrated reverse-polarity protection that allows operation in the harsh transients of automotive battery environments. The PG-TSON-10 exposed-pad package provides low thermal resistance, enabling sustained 150 mA output without external heatsinking at moderate ambient temperatures.
The TLS115D0LD uses a PNP pass element architecture with a precision bandgap reference and on-chip feedback divider. The tracking topology allows the output to track a scaled version of an external reference, eliminating the need for a separate, accurate internal reference and improving supply-noise rejection for sensor applications. The exposed pad must be soldered to a sufficient copper pour to achieve rated thermal performance.
Typical applications include off-board sensor power supplies in powertrain management (e.g., manifold absolute pressure and oxygen sensors), body electronics modules, and chassis control systems. The tracking regulator topology ensures the sensor supply remains ratiometric with the ECU reference, simplifying ADC measurements and diagnostics.
When designing with this device, follow the datasheet layout guidance and provide adequate input/output capacitance to ensure stability under load transients. The exposed pad must be thermally and electrically connected to the ground plane to achieve the rated current and reliability.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet, including same-family Infineon variants and cross-brand equivalents where applicable.
Mga alternatibo na pwedeng ilagay na TLS115D0LDXUMA1 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok TLS115D0LDXUMA1 (parehas na form factor at footprint) — pagkakaiba sa Package, Output Type, Input Voltage Range, Maximum Output Current, Operating Temperature Range.
Wala ng magagamit na drop-in alternatibo para sa produkto na ito.
Hilingin ang AlternatiboTLS115D0LDXUMA1 Mga Pinakamataas na Rating at Electrical Characteristics
| Type ng Output | Adjustable (Tracking) |
| Output Volte | 2.0 V (tracking ratio set by external resistors) |
| Maksimum na Current ng Output | 150 mA |
| Bilang ng Outputs | 1 |
| Voltage ng Dropout | 200 mV (typical, at 150 mA) |
| Pin na Pinapayagan | Yes |
| Output ng Power Dati | Yes |
| Reverse Polarity Protection | Yes (integrated) |
| Temperature na Operasyon | -40C to +125C (automotive grade) |
| Packhaging | PG-TSON-10 (TSON-10 exposed pad) |
| Uri ng Pagpapasok | Surface Mount |
| Automotive Qualification | AEC-Q100 |
| Tindminan RoHS | Compliant |
| Series | OPTIREG Linear |
Pin Configuration ng TLS115D0LDXUMA1
| Pin 1 | VIN — Input voltage supply |
| Pin 2 | GND — Ground |
| Pin 3 | ADJ — Adjust / tracking reference input |
| Pin 4 | EN — Enable (active high) |
| Pin 5 | NC — Not connected |
| Pin 6 | NC — Not connected |
| Pin 7 | OUT — Regulated output voltage |
| Pin 8 | PG — Power Good output |
| Pin 9 | NC — Not connected |
| Pin 10 | EP — Exposed thermal pad (connect to GND) |
Tipikal na mga Gamit
TLS115D0LDXUMA1 ay nararapat para sa 6 aplikasyons: Off-Board Automotive Sensor Power, Powertrain Management Systems, Body Electronics and Lighting Modules, Chassis Control and ABS Modules, Industrial Sensor Signal Conditioning, Battery Management Sensor Supplies.
Off-Board Automotive Sensor Power
The TLS115D0LDXUMA1 is purpose-built to supply off-board sensors in automotive powertrain applications such as MAP, MAF, and oxygen sensors. Its tracking topology ensures the sensor supply is ratiometric with the ECU reference voltage, eliminating ground-loop errors in ADC measurements. With 150 mA continuous output current and integrated reverse-polarity protection, it survives harsh automotive transients without external protection diodes. The PG-TSON-10 exposed-pad package occupies just 3x3 mm and provides low thermal resistance for sustained operation at full load.
Inirekomenda
Powertrain Management Systems
In powertrain ECUs, the TLS115D0LDXUMA1 provides a clean tracking reference for analog sensor signal chains feeding the ECU ADC. The Power Good output enables diagnostic supervision of the sensor supply, supporting ASIL-relevant safety architectures. AEC-Q100 qualification and -40C to +125C operation ensure reliability under hood temperatures. The wide input voltage range handles 12V battery cold-crank and load-dump conditions per ISO 7637, simplifying upstream protection design.
Inirekomenda
Body Electronics and Lighting Modules
Body control modules (BCMs) and lighting ECUs use the TLS115D0LDXUMA1 to power off-board Hall-effect position sensors, ambient light sensors, and LED driver references. Its small TSON-10 footprint enables placement near connector pins, minimizing trace lengths and EMI susceptibility. The enable pin supports low-power standby modes critical for always-on body electronics. Tracking topology keeps the sensor output ratiometric with the ECU master reference, simplifying ADC scaling across the operating temperature range.
Inirekomenda
Chassis Control and ABS Modules
Chassis control ECUs such as ABS, ESC, and active suspension units require stable, ratiometric sensor supplies for wheel-speed and position sensors. The TLS115D0LDXUMA1's tracking regulator topology maintains precise sensor scaling even as battery voltage sags during cranking. AEC-Q100 qualification and reverse-polarity protection support direct battery connection at the module input. The exposed-pad package dissipates the regulator's quiescent and dropout heat efficiently in vibration-heavy chassis mounting environments.
Inirekomenda
Industrial Sensor Signal Conditioning
Beyond automotive, the TLS115D0LDXUMA1 suits industrial 24V sensor signal conditioning in factory automation. Its tracking topology isolates the ADC reference scaling from supply variation, improving measurement repeatability. The -40C to +125C operation covers outdoor and cabinet-mounted industrial environments. Reverse-polarity protection safeguards against wiring errors during field installation, reducing service and warranty costs for OEMs deploying sensor modules in the field.
Inirekomenda
Battery Management Sensor Supplies
Battery management systems (BMS) in mild-hybrid and 48V vehicles use the TLS115D0LDXUMA1 to supply cell voltage and current sensors. The tracking output maintains ratiometric scaling with the BMS master reference, critical for accurate state-of-charge calculations. Reverse-polarity protection prevents damage during battery service and jump-start events. The Power Good output feeds the BMS watchdog, enabling fault detection within the functional safety architecture.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for TLS115D0LDXUMA1 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | TLS115D0EJXUMA1 | TLS850B0TEV50ATMA1 | TLE42744DV50ATMA1 |
|---|---|---|---|---|
| Package | PG-TSON-10 | DSO-8 EP (different) | TO-252 (different) | TO-252 (different) |
| Brand | Infineon | Infineon | Infineon | Infineon |
| Output Current | 150 mA | 150 mA | 500 mA | 400 mA |
| Output Type | Adjustable Tracking | Adjustable Tracking | Fixed 5V | Fixed 5V |
| Automotive Grade | AEC-Q100 | AEC-Q100 | AEC-Q100 | AEC-Q100 |
| Enable Pin | Yes | Yes | Yes | Yes |
| Power Good | Yes | Yes | Yes | No |
| Tracking Topology | Yes | Yes | No | No |
Pangunahing mga Pagkakaiba
- Tracking regulator topology for ratiometric sensor power (kumpara saTLS850B0TEV50ATMA1)
- Integrated reverse-polarity protection on input (kumpara saTLE42744DV50ATMA1)
- Smallest package footprint in OPTIREG tracking family (kumpara saTLS115D0EJXUMA1)
Talaan ng Disenyo
The PG-TSON-10 package has a low thermal resistance when the exposed pad is soldered to the PCB ground plane. At 150 mA load and 0.5 V dropout, the IC dissipates approximately 75 mW, well within the package rating. Ensure at least 25 mm² of copper pour on the EP pad to achieve datasheet thermal performance. Insufficient copper will raise junction temperature and may trigger thermal shutdown under sustained full-load conditions at high ambient temperatures.
Place input and output ceramic capacitors (X7R, 100 nF minimum; 1 µF recommended for load transients) as close to the IC pins as possible. Keep the ADJ/resistor divider traces short and away from noisy switching nodes. The exposed pad must be soldered to the PCB ground plane through multiple thermal vias (recommended: 4-9 vias at 0.3 mm drill) for optimal heat spreading. Follow the Infineon application note layout reference for automotive regulator designs.
Do not exceed the maximum input voltage or operate without the input capacitor, as this can cause instability. The ADJ pin sets the tracking ratio - incorrect resistor values will cause the sensor supply to be non-ratiometric with the ECU reference, introducing ADC measurement errors. The Power Good output is open-drain and requires an external pull-up resistor. Reverse-polarity protection is integrated on VIN but does not protect the load - place a reverse-blocking diode or P-MOSFET on the output if off-board short to ground is possible.
Impormasyon ng Pagsunod sa Kautusan
AEC-Q100 qualified per Infineon datasheet for automotive applications. RoHS compliant. Halogen-free status not specified in available data.
