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Diodes Incorporated AP7375Q-18FDCW-7
- Part No.:
- AP7375Q-18FDCW-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-UDFN Exposed Pad
- Datasheet:
-
AP7375Q-18FDCW-7.pdf
- Description:
- LDO CMOS LOWCURR U-DFN2020-6/SWP
- Quantity:
- Payment:
- Shipping:
Inventory:3,049
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Product details
Overview
AP7375Q-18FDCW-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 1.8V fixed-output ultra-low-dropout linear regulator with 3V–45V input range, 300mA output capability, and 2.1µA quiescent current. It features integrated short-circuit and thermal shutdown protection, 45V-tolerant EN pin, and fast transient response for stable power in harsh environments. Used in EV battery management systems and body control modules where wide VIN and low IQ are critical.
For engineers reviewing the AP7375Q-18FDCW-7 datasheet, AP7375Q-18FDCW-7 pinout, AP7375Q-18FDCW-7 application, or AP7375Q-18FDCW-7 equivalent, this page delivers verified package mapping (U-DFN2020-6), terminal functions, thermal resistance (99.5°C/W), dropout voltage at load (35mV @10mA), and automotive qualification status - all essential for functional safety-compliant design-in.
Technical Context
The AP7375Q-18FDCW-7 implements a PMOS pass transistor architecture enabling ultra-low dropout (35mV @10mA) and high PSRR (85dB @1kHz). Its EN pin accepts up to 45V directly, eliminating level-shifting circuitry in high-side enable configurations across 12V/24V/48V automotive rails.
Internal protection includes current limiting (500mA typ), thermal shutdown at +150°C with +10°C hysteresis, and robust ESD tolerance (3kV HBM, 1.5kV CDM). The device maintains ±2% output accuracy over -40°C to +125°C ambient and supports ceramic output capacitors ≥1µF for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8V ±2% - ensures precise MCU core rail compliance without external feedback. |
| Input Voltage Range | 3V to 45V - supports cold-crank (4.5V), load-dump (40V+), and multi-battery architectures. |
| Max Output Current | 300mA continuous - sufficient for powering CAN transceivers, sensor interfaces, and low-power MCUs. |
| Quiescent Current | 2.1µA typical - enables always-on functionality in vehicle entry systems with <10µA system sleep budget. |
| Dropout Voltage | 35mV @10mA / 350mV @100mA - allows regulation down to VIN = VOUT + 0.35V, maximizing efficiency in low-VIN conditions. |
| PSRR | 85dB @1kHz - suppresses alternator ripple and switching noise from adjacent DC-DC converters. |
| Thermal Resistance θJA | 99.5°C/W (U-DFN2020-6) - requires minimal PCB copper area for thermal relief in space-constrained modules. |
Pinout & Package
AP7375Q-18FDCW-7 uses the U-DFN2020-6 (SWP) Type UXC package: 2.0mm × 2.0mm × 0.6mm body with exposed thermal pad (EP), RoHS-compliant NiPdAu finish, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 1.8V output - connect to local 10µF ceramic capacitor; trace must minimize inductance for transient response. |
| 2 | VIN | Main input (3–45V) - requires 1µF ceramic decoupling placed adjacent to pin; wide trace recommended for high-current paths. |
| 3 | GND | Analog/digital ground reference - tie directly to PCB ground plane; avoid shared return paths with noisy circuits. |
| 4 | GND | Secondary ground terminal - improves thermal conduction and reduces ground impedance in high-frequency operation. |
| 5 | EN | Enable control (0.4V logic low disables; >1V enables) - accepts up to 45V, enabling direct connection to battery-sensed signals. |
| 6 | GND | Third ground terminal - enhances thermal dissipation via EP connection; must be soldered to large copper pour tied to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VIN range (3–45V) | Eliminates need for pre-regulator in 12V/24V/48V automotive systems, reducing BOM count and board area. |
| 2.1µA quiescent current | Enables >10-year battery life in keyless entry modules powered from 3V coin cells or backup batteries. |
| 45V-tolerant EN pin | Permits direct interface with unregulated battery monitoring nodes - no external Zener or divider required. |
| Fast transient response | Prevents undershoot/overshoot during CAN bus arbitration bursts or MCU wake-up events, ensuring reliable logic-level integrity. |
| Integrated thermal shutdown | Auto-recovers after cooldown - avoids latch-off failures during intermittent overload in transmission control units. |
Applications
| Automotive Body Control Module (BCM) | EV Battery Management System (BMS) Sensor Interface |
|---|---|
Use Scenario: Powering LIN transceivers and door-lock actuators in centralized BCMs operating across battery voltage swings (-0.3V to 45V). IC Role / Device Role / Timing Role: Primary 1.8V LDO supplying microcontroller I/O banks and LIN PHY logic rails. Use Value: Maintains ±2% output accuracy during cold-crank (4.5V VIN) and load-dump (40V VIN), preventing communication timeouts. |
Use Scenario: Regulating power for isolated temperature and voltage sensing ICs in high-voltage battery packs (up to 900V total). IC Role / Device Role / Timing Role: Secondary LDO delivering clean 1.8V to ADC reference buffers and isolation barrier drivers. Use Value: 85dB PSRR rejects switching noise from nearby DC-DC converters, preserving 16-bit ADC measurement integrity. |
| Automotive Head Unit Display Backlight Driver | Transmission Control Unit (TCU) MCU Core Supply |
Use Scenario: Providing bias voltage to LED driver ICs controlling TFT display backlight brightness in infotainment head units. IC Role / Device Role / Timing Role: Stable 1.8V supply for PWM controller logic and I²C configuration interface. Use Value: Ultra-low 2.1µA IQ prevents parasitic drain on accessory battery during extended parking modes. |
Use Scenario: Delivering core voltage to 32-bit ARM-based TCUs managing gear-shift timing and clutch actuation. IC Role / Device Role / Timing Role: Low-noise 1.8V rail for CPU core and memory subsystems requiring tight voltage tolerance. Use Value: 35mV dropout at 10mA enables operation down to 1.835V input - critical during engine cranking dips. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-IQ automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73318PQDBVRQ1 | Lower max current (300mA vs. 300mA), higher IQ (25µA), same 1.8V output, SOT-23-5 package. | Lacks 45V EN tolerance; requires external level shift for battery-sense enable. | Choose if board space permits larger SOT-23 footprint and EN signal is already level-shifted. |
| MAX25210ATPA/V+T | Higher IQ (12µA), wider temp range (-40°C to +150°C), 1.8V output, 300mA, TDFN-8 package. | Includes watchdog timer and reset output - adds supervisory function not present in AP7375Q. | Choose when system-level fault detection and controlled reset sequencing are required alongside regulation. |
Compared with TLV73318PQDBVRQ1 and MAX25210ATPA/V+T, AP7375Q-18FDCW-7 uniquely combines 45V EN tolerance, 2.1µA IQ, and U-DFN2020-6 footprint - making it optimal for compact, high-reliability automotive nodes where enable simplicity and ultra-low standby loss are mandatory.
Availability
AP7375Q-18FDCW-7 is available at Aetrix Electronics and suitable for automotive body control modules, EV battery management sensor interfaces, transmission control units, and head unit display subsystems requiring stable component supply under AEC-Q100 and IATF 16949 compliance.
Supply support for AP7375Q-18FDCW-7 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 ISO/TS 16949-certified manufacturing facilities.
The AP7375Q series belongs to Diodes' automotive-qualified power management portfolio, designed specifically for demanding vehicle subsystems requiring wide-input, ultra-low-IQ regulation with integrated protection and AEC-Q100 reliability.
FAQ
What is the maximum allowable input voltage for AP7375Q-18FDCW-7?
The absolute maximum input voltage is 55V, but the recommended operating range is 3V to 45V per the datasheet. Operation above 45V risks exceeding safe power dissipation limits and may trigger thermal shutdown. For sustained 45V operation, ensure PCB thermal design meets θJA ≤ 99.5°C/W with adequate copper pour on the exposed pad.
Does AP7375Q-18FDCW-7 require an external output capacitor, and what type is recommended?
Yes - a minimum 1µF ceramic capacitor (X5R or X7R dielectric) is required between VOUT and GND for stability. Diodes recommends 10µF for optimal load transient response. Place it within 2mm of the VOUT and GND pins; avoid tantalum or electrolytic types due to ESR-related instability risks.
How does the EN pin behave during battery voltage transients?
The EN pin tolerates -0.3V to +55V continuously and operates with logic thresholds of VENL ≤ 0.4V (disable) and VENH ≥ 1V (enable). During load-dump events (up to 40V), EN remains functional without clamping or damage - enabling direct connection to battery-sensed enable signals without external protection.
Is AP7375Q-18FDCW-7 qualified for ASIL-B or higher functional safety levels?
No - the AP7375Q-18FDCW-7 is AEC-Q100 Grade 1 qualified (-40°C to +125°C) and PPAP-capable, but it does not carry ISO 26262 ASIL certification. It may be used in ASIL-B systems as a supporting power component, provided system-level FMEDA and fault injection analysis confirm its contribution to overall safety goals.
AP7375Q-18FDCW-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-UDFN Exposed Pad
- 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:
- 350mA
- Current - Quiescent (Iq):
- 8 µA
- Current - Supply (Max):
- -
- PSRR:
- 85dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- U-DFN2020-6 (SWP) (Type UXC)
AP7375Q-18FDCW-7 FAQ
1.How can I place an order for AP7375Q-18FDCW-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7375Q-18FDCW-7 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-18FDCW-7 reliable?
The price and inventory of AP7375Q-18FDCW-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7375Q-18FDCW-7 is usually 5 days.
3.What payment methods are accepted for AP7375Q-18FDCW-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7375Q-18FDCW-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7375Q-18FDCW-7?
AP7375Q-18FDCW-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7375Q-18FDCW-7 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-18FDCW-7?
For technical support, including AP7375Q-18FDCW-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7375Q-18FDCW-7 requirements.
6.How does Aetrix verify that AP7375Q-18FDCW-7 is sourced from the original manufacturer or authorized distributors?
All AP7375Q-18FDCW-7 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-18FDCW-7 meets industry standards.
7.What is the process for return or replacement of AP7375Q-18FDCW-7?
All AP7375Q-18FDCW-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7375Q-18FDCW-7, 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-18FDCW-7 part is unused and in its original packaging.
Return procedure for AP7375Q-18FDCW-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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