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Diodes Incorporated AP7375Q-18Y-13
- Part No.:
- AP7375Q-18Y-13
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-243AA
- Datasheet:
-
AP7375Q-18Y-13.pdf
- Description:
- LDO CMOS LOWCURR SOT89 T&R 2.5K
- Quantity:
- Payment:
- Shipping:
Inventory:2,272
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Product details
Overview
AP7375Q-18Y-13 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 1.8V fixed-output ultra-low-dropout linear regulator with 45V max input voltage, 300mA output current capability, and 2.1µA quiescent current. It features enable control (EN pin rated to 45V), ±2% output accuracy, thermal shutdown, and short-circuit protection - designed for power supply in harsh-temperature automotive subsystems including body control modules and battery management systems.
For engineers reviewing the AP7375Q-18Y-13 datasheet, AP7375Q-18Y-13 pinout, AP7375Q-18Y-13 application, or AP7375Q-18Y-13 equivalent, this device supports high-reliability 1.8V rail generation under wide-input (3–45V) and low-quiescent-current constraints typical of always-on automotive electronics.
Technical Context
The AP7375Q-18Y-13 integrates a PMOS pass transistor enabling dropout as low as 35mV at 10mA and 350mV at 100mA, with fast transient response that prevents overshoot during startup and short-circuit recovery. Its EN pin accepts up to 45V, allowing direct connection to unregulated battery rails without level-shifting.
Internal protection includes thermal shutdown triggered at +150°C with +10°C hysteresis and current limiting at ~500mA. PSRR reaches 85dB at 1kHz, and line/load regulation are specified at 0.02%/V and 0.025%/mA respectively - critical for noise-sensitive MCU and transceiver power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% - ensures stable core logic supply for automotive MCUs and CAN/LIN transceivers. |
| Input Voltage Range | 3V to 45V - supports cold-crank (≥3V) and load-dump (≤45V) conditions in 12V/24V vehicle systems. |
| Max Output Current | 300mA - sufficient for powering low-power microcontrollers, sensor interfaces, and communication ICs. |
| Quiescent Current | 2.1µA typ - enables ultra-low standby power in always-on automotive modules (e.g., door ECU, alarm controller). |
| Dropout Voltage | 35mV @ 10mA / 350mV @ 100mA - maintains regulation during battery sag while minimizing power loss and heat. |
| PSRR | 85dB @ 1kHz - suppresses ripple from noisy alternator or switching converter inputs feeding sensitive analog/digital circuits. |
| Thermal Shutdown | +150°C with +10°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
SOT89 package (Package Code: Y) with 3-pin configuration: VIN (Pin 1), GND (Pin 2), VOUT (Pin 3). Exposed pad not present in SOT89 variant; thermal dissipation relies on copper area under Pin 2 (GND) and trace width.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input voltage supply | Accepts 3–45V DC; must be decoupled with ≥1µF ceramic capacitor placed adjacent to pin. |
| GND | Ground reference | Primary return path for load current and internal bias; requires low-impedance PCB connection to minimize noise and voltage drop. |
| VOUT | Regulated output | Delivers stable 1.8V ±2%; requires ≥10µF ceramic output capacitor (X5R/X7R) placed within 3mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (3–45V) | Eliminates need for pre-regulation in automotive battery-fed applications, reducing BOM count and board space. |
| 2.1µA quiescent current | Enables >10-year battery life in always-on modules powered by 12V lead-acid or LiFePO₄ backup cells. |
| 45V-tolerant EN pin | Permits direct connection to unregulated battery rail without external voltage divider or level shifter. |
| ±2% output accuracy | Guarantees reliable operation of 1.8V I/O domains in automotive MCUs without post-regulation trimming. |
| Fast transient response | Prevents undershoot/overshoot during load steps (e.g., CAN transceiver wake-up), avoiding logic glitches or resets. |
Applications
| Automotive Body Control Module (BCM) | EV Battery Management System (BMS) Sensor Interface |
|---|---|
|
Use Scenario: Powering 1.8V I/O and ADC reference rails for door lock controllers, mirror position sensors, and interior lighting drivers. IC Role / Device Role / Timing Role: Primary LDO supplying regulated 1.8V to microcontroller peripherals and analog front-ends in temperature-cycled cabin environments. Use Value: Maintains regulation during cold-crank (down to 3V) and load-dump events (up to 45V), ensuring continuous BCM operation without brownout reset. |
Use Scenario: Providing clean 1.8V supply to temperature, voltage, and current sensing ICs in high-voltage EV battery packs. IC Role / Device Role / Timing Role: Isolated low-noise power source for precision analog signal conditioning circuitry interfacing with cell monitoring units. Use Value: 85dB PSRR at 1kHz rejects switching noise from nearby DC-DC converters, preserving ADC measurement integrity. |
| Automotive Head Unit (HU) Display Controller | Transmission Control Unit (TCU) Communication Interface |
|
Use Scenario: Supplying 1.8V logic rails for display driver ICs and touch controller interfaces in infotainment head units. IC Role / Device Role / Timing Role: Secondary LDO delivering low-noise, tightly regulated voltage to digital interface blocks operating alongside high-speed video processors. Use Value: Fast load-transient response prevents display flicker or touch latency during burst-mode data transfers between SoC and display panel. |
Use Scenario: Powering 1.8V CAN FD transceiver I/O and LIN bus interface logic in transmission control units. IC Role / Device Role / Timing Role: Dedicated LDO for communication PHY layers requiring stable voltage during CAN bus arbitration and error-frame recovery. Use Value: No overshoot during short-circuit recovery ensures CAN transceiver remains functional after bus fault clearing, maintaining network uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73318PQDBVRQ1 | Lower max input (6.5V), higher IQ (4.5µA), same 1.8V output and AEC-Q100 qualification. | Restricted to post-regulated 5V domains; unsuitable for direct battery connection. | Select when input is already stepped down and ultra-low IQ is secondary to cost. |
| TPS7B8118QDCYRQ1 | Higher dropout (170mV @ 150mA), lower max input (40V), 350mA output, integrated watchdog timer. | Lacks 45V EN tolerance; adds system-level safety monitoring but increases complexity. | Choose when functional safety (ASIL-B) monitoring is required and 40V input suffices. |
Compared with TLV73318PQDBVRQ1 and TPS7B8118QDCYRQ1, the AP7375Q-18Y-13 uniquely combines 45V input/EN tolerance, 2.1µA IQ, and 300mA output in SOT89 - making it optimal for direct-battery-fed 1.8V rails where space, thermal simplicity, and wide-operating-range resilience are prioritized over integrated safety logic.
Availability
AP7375Q-18Y-13 is available at Aetrix Electronics and suitable for automotive body control modules, EV battery sensor interfaces, and transmission control units requiring stable component supply across extended temperature ranges (-40°C to +125°C) and long product lifecycles.
Supply support for AP7375Q-18Y-13 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
Diodes Incorporated is a global semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions for automotive, industrial, and consumer markets, with IATF 16949 certified manufacturing facilities.
The AP7375Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for wide-input, ultra-low-IQ power management in battery-connected ECUs where reliability under extreme voltage transients is mandatory.
FAQ
What is the maximum allowable input voltage for AP7375Q-18Y-13?
The absolute maximum input voltage is 55V, but the recommended operating range is 3V to 45V per datasheet Section 4. This 45V limit aligns with ISO 7637-2 Load Dump Pulse 5a requirements for 24V automotive systems, ensuring robustness during transient overvoltage events without derating.
Does AP7375Q-18Y-13 require an external pull-up resistor on the EN pin?
No external pull-up is required. The EN pin has an internal pull-down; applying ≥1V (typical threshold 1V, max 1.5V) enables the regulator. Since the EN pin tolerates up to 45V, it can be driven directly from battery or ignition-switched rail without level-shifting components.
Can AP7375Q-18Y-13 operate at full 300mA output current across its entire temperature range?
Yes, but thermal design is critical. At TA = +125°C and VIN = 12V, the junction temperature must remain ≤+150°C. With θJA = 94.5°C/W (SOT89), 300mA output requires ≤1.2W total power dissipation - achievable only with adequate PCB copper area and ambient airflow or derating above +85°C.
Is the 1.8V output voltage trimmed at the factory for AP7375Q-18Y-13?
Yes. The 1.8V output is factory-trimmed to ±2% accuracy over -40°C to +125°C, as verified in Electrical Characteristics Table (Section 4). This eliminates need for external feedback resistors or post-assembly calibration in automotive applications where long-term stability and temperature drift are critical.
AP7375Q-18Y-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-243AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 45V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.4V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 8 µA
- Current - Supply (Max):
- -
- PSRR:
- 85dB (1kHz)
- Control Features:
- Current Limit
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-89-3
AP7375Q-18Y-13 FAQ
1.How can I place an order for AP7375Q-18Y-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7375Q-18Y-13 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 AP7375Q-18Y-13 reliable?
The price and inventory of AP7375Q-18Y-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7375Q-18Y-13 is usually 5 days.
3.What payment methods are accepted for AP7375Q-18Y-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7375Q-18Y-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7375Q-18Y-13?
AP7375Q-18Y-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7375Q-18Y-13 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 AP7375Q-18Y-13?
For technical support, including AP7375Q-18Y-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7375Q-18Y-13 requirements.
6.How does Aetrix verify that AP7375Q-18Y-13 is sourced from the original manufacturer or authorized distributors?
All AP7375Q-18Y-13 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 AP7375Q-18Y-13 meets industry standards.
7.What is the process for return or replacement of AP7375Q-18Y-13?
All AP7375Q-18Y-13 units undergo pre-shipment inspection (PSI). If there is an issue with AP7375Q-18Y-13, 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 AP7375Q-18Y-13 part is unused and in its original packaging.
Return procedure for AP7375Q-18Y-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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