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Diodes Incorporated AP7375Q-50WR-7
- Part No.:
- AP7375Q-50WR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7375Q-50WR-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:4,056
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Product details
Overview
AP7375Q-50WR-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 5.0V fixed-output ultra-low-dropout linear regulator (ULDO) with 45V max input voltage, 300mA output current capability, and 2.1µA quiescent current. It features enable control up to 45V, integrated short-circuit and thermal shutdown protection, and ±2% output voltage accuracy. It powers critical subsystems in body control modules and EV battery management systems.
For engineers reviewing the AP7375Q-50WR-7 datasheet, AP7375Q-50WR-7 pinout, AP7375Q-50WR-7 application, or AP7375Q-50WR-7 equivalent, key selection criteria include wide-input voltage tolerance (3–45V), low dropout at high load (350mV @ 100mA), fast transient response without overshoot, and SOT25-WR package thermal performance (θJA = 135.5°C/W).
Technical Context
The AP7375Q-50WR-7 employs a PMOS pass transistor architecture enabling true ultra-low dropout operation and reverse-polarity safe operation. Its EN pin accepts up to 45V directly, eliminating level-shifting circuitry in high-voltage automotive domains.
Internal protection includes foldback current limiting (500mA typical limit), thermal shutdown at +150°C with +10°C hysteresis, and robust ESD immunity (3kV HBM, 1.5kV CDM). The device maintains stability with 1µF minimum ceramic input and 10µF output capacitors (X7R/X5R).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 45V - supports direct connection to 12V/24V/42V automotive battery rails including cold-crank and load-dump transients. |
| Output Voltage | 5.0V fixed ±2% - ensures reliable MCU and CAN transceiver biasing without external feedback network. |
| Max Output Current | 300mA - sufficient for powering dual-core automotive MCUs or multiple LIN nodes simultaneously. |
| Dropout Voltage | 350mV @ 100mA - enables regulation down to VIN = 5.35V, critical during engine cranking (6–8V battery sag). |
| Quiescent Current | 2.1µA typ - minimizes standby power loss in always-on vehicle networks (e.g., door module wake-up circuits). |
| PSRR | 85dB @ 1kHz - suppresses alternator ripple and switching noise from adjacent DC-DC converters. |
| Thermal Shutdown | +150°C with +10°C hysteresis - prevents latch-up during sustained overload or poor PCB heatsinking. |
Pinout & Package
SOT25-WR (Package Code WR) is a 5-pin surface-mount package with exposed pad for enhanced thermal dissipation. Pin 1 is VOUT, Pin 2 is VIN, Pin 3 is GND, Pin 4 is GND, Pin 5 is EN. The exposed pad (EP) must be connected to PCB ground plane for optimal thermal performance (θJA = 135.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Regulated output | Delivers stable 5.0V to load; requires 10µF ceramic capacitor placed adjacent to minimize loop inductance. |
| VIN (Pin 2) | Input supply | Accepts 3–45V; requires 1µF ceramic decoupling capacitor close to pin to suppress high-frequency noise. |
| GND (Pins 3 & 4) | Ground reference | Dual ground pins reduce trace impedance; both must connect to low-impedance ground plane for stability and thermal conduction. |
| EN (Pin 5) | Enable control | Active-high logic; accepts 0–45V input-enables direct microcontroller GPIO or battery-sensed wake signal without resistor divider. |
| EP (Exposed Pad) | Thermal interface | Not electrically functional; must be soldered to large copper area tied to GND for thermal dissipation (θJC = 36.7°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Wide input range (3–45V) | Eliminates need for pre-regulator in 12V/24V/42V automotive architectures, reducing BOM count and board space. |
| Ultra-low IQ (2.1µA) | Extends battery life in always-on modules (e.g., remote keyless entry receivers) beyond ISO 8820-3 sleep current limits. |
| No overshoot during startup/short-circuit recovery | Prevents voltage spikes that could reset connected MCUs or damage downstream logic-level interfaces. |
| AEC-Q100 Grade 1 qualification | Validated for operation from −40°C to +125°C ambient, meeting stringent automotive reliability and lifetime requirements. |
| Integrated short-circuit & thermal protection | Enables fault-tolerant design without external current-sense resistors or thermal sensors-reducing system complexity. |
Applications
| Body Control Module (BCM) | EV Battery Management System (BMS) |
|---|---|
|
Use Scenario: Powering microcontroller, CAN transceiver, and door lock actuator drivers in centralized vehicle body electronics. IC Role / Device Role / Timing Role: Primary 5V rail regulator supplying logic and communication peripherals with high line/load regulation (0.01%/V, 0.025%/mA). Use Value: Maintains stable 5V under battery voltage sags to 6V during cranking and rejects alternator ripple via 85dB PSRR. |
Use Scenario: Biasing analog front-end (AFE) ICs, cell monitoring ICs, and isolated gate drivers in high-voltage traction battery packs. IC Role / Device Role / Timing Role: Local 5V supply for precision ADC references and digital isolators requiring low-noise, low-drift voltage sources. Use Value: Delivers 120µVrms output noise and ±2% accuracy over temperature-critical for <16-bit cell voltage measurement integrity. |
| Automotive Head Unit | Transmission Control Unit (TCU) |
|
Use Scenario: Supplying infotainment SoC I/O rails and audio codec bias in dashboard-mounted head units exposed to wide thermal cycling. IC Role / Device Role / Timing Role: Secondary LDO providing clean 5V for USB PHY, display interface, and touch controller logic. Use Value: Fast load transient response (<1ms settling) prevents audio glitches during simultaneous touchscreen and Bluetooth activity bursts. |
Use Scenario: Powering transmission solenoid driver ICs and position sensor signal conditioners in harsh under-hood environments. IC Role / Device Role / Timing Role: Robust 5V source for real-time control logic with guaranteed operation up to +125°C ambient. Use Value: Thermal shutdown with hysteresis prevents thermal runaway during extended high-load gear shifting events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73350PDBVR | Lower max input (6.5V), lower IQ (350nA), no AEC-Q100 qualification, SOT-23-5 package. | Restricted to 5V-only systems; unsuitable for direct battery connection or automotive qualification requirements. | Select only for non-automotive, low-power consumer applications where input voltage never exceeds 6.5V. |
| TPS7B8750QKVURQ1 | Higher IQ (25µA), higher dropout (400mV @ 300mA), same 45V input, TO-252-5 package. | Better thermal performance (θJA = 50°C/W) but higher static power draw compromises always-on functionality. | Prefer when continuous 300mA load and superior thermal margin outweigh quiescent current constraints. |
Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, the AP7375Q-50WR-7 uniquely balances ultra-low IQ (2.1µA), full AEC-Q100 compliance, and 45V input tolerance in a compact SOT25-WR footprint-making it optimal for space-constrained, battery-sensitive automotive modules.
Availability
AP7375Q-50WR-7 is available at Aetrix Electronics and suitable for automotive body control modules, EV battery management systems, and transmission control units requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AP7375Q-50WR-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 computing markets.
The AP7375Q belongs to Diodes' automotive-qualified ULDO regulator family, designed specifically for high-reliability power management in harsh-temperature, high-voltage vehicle subsystems.
FAQ
What is the maximum allowable input voltage for AP7375Q-50WR-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 internal MOSFET breakdown limits and invalidates AEC-Q100 qualification conditions. Transient spikes up to 55V are tolerated for ≤100ns per JEDEC standards.
Can AP7375Q-50WR-7 operate with a 1µF output capacitor?
No-minimum recommended output capacitance is 10µF ceramic (X7R/X5R). A 1µF capacitor violates stability requirements and causes oscillation or excessive undershoot during load transients. The 1µF value applies only to the input capacitor.
Is the EN pin of AP7375Q-50WR-7 5V-tolerant or 45V-tolerant?
The EN pin is rated for −0.3V to +55V relative to GND, making it fully 45V-tolerant. It can be driven directly from battery voltage or high-side switch outputs without external level-shifting components-simplifying system-level enable sequencing.
Does AP7375Q-50WR-7 require an external pull-down resistor on the EN pin?
No external pull-down is required. The EN pin has an internal 10MΩ pull-down resistor (per datasheet Figure 10), ensuring default disable state during power-up. External resistors are unnecessary unless specific timing or noise immunity requirements dictate otherwise.
AP7375Q-50WR-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- 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):
- 5V
- 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
- 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-25
AP7375Q-50WR-7 FAQ
1.How can I place an order for AP7375Q-50WR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7375Q-50WR-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-50WR-7 reliable?
The price and inventory of AP7375Q-50WR-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-50WR-7 is usually 5 days.
3.What payment methods are accepted for AP7375Q-50WR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7375Q-50WR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7375Q-50WR-7?
AP7375Q-50WR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7375Q-50WR-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-50WR-7?
For technical support, including AP7375Q-50WR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7375Q-50WR-7 requirements.
6.How does Aetrix verify that AP7375Q-50WR-7 is sourced from the original manufacturer or authorized distributors?
All AP7375Q-50WR-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-50WR-7 meets industry standards.
7.What is the process for return or replacement of AP7375Q-50WR-7?
All AP7375Q-50WR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7375Q-50WR-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-50WR-7 part is unused and in its original packaging.
Return procedure for AP7375Q-50WR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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