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Diodes Incorporated AP7375Q-50W5-7
- Part No.:
- AP7375Q-50W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7375Q-50W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:4,957
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Product details
Overview
AP7375Q-50W5-7 from Diodes Incorporated is an AEC-Q100 qualified automotive-grade 5.0V fixed-output ultra-low-dropout linear regulator (LDO) 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 battery management and body control modules where wide VIN range and low IQ are essential.
For engineers reviewing the AP7375Q-50W5-7 datasheet, AP7375Q-50W5-7 pinout, AP7375Q-50W5-7 application, or AP7375Q-50W5-7 equivalent, key selection criteria include dropout voltage at 100mA (350mV typ), PSRR of 85dB at 1kHz, thermal resistance (135.5°C/W for SOT25), EN pin voltage tolerance (up to 45V), and AEC-Q100 qualification status for automotive deployment.
Technical Context
The AP7375Q-50W5-7 implements a PMOS pass transistor architecture enabling ultra-low dropout and fast transient response without external compensation. Its EN pin accepts up to 45V directly, eliminating level-shifting circuitry in high-voltage automotive domains.
Internal protection includes current limiting (500mA typ), thermal shutdown at +150°C with +10°C hysteresis, and robust ESD ratings (3kV HBM, 1.5kV CDM). The device maintains stable regulation across -40°C to +125°C ambient and supports ceramic output capacitors ≥1µF for optimal load/line transient suppression.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±2% - ensures precise MCU core or CAN transceiver supply without external feedback. |
| Input Voltage Range | 3V to 45V - supports cold-crank (4.5V) and load-dump (40V+) conditions in 12V/24V automotive systems. |
| Max Output Current | 300mA - sufficient for powering microcontrollers, sensors, and LIN/CAN transceivers simultaneously. |
| Quiescent Current | 2.1µA typ - enables always-on functionality in vehicle security or telematics modules with minimal battery drain. |
| Dropout Voltage | 350mV @ 100mA - allows operation down to 5.35V input while maintaining regulated 5.0V output during brownout. |
| PSRR | 85dB @ 1kHz - suppresses alternator ripple and switching noise from adjacent DC/DC converters. |
| Thermal Resistance | 135.5°C/W (SOT25) - defines maximum power dissipation (≈360mW) before thermal shutdown under still-air conditions. |
Pinout & Package
AP7375Q-50W5-7 is packaged in SOT25 (Package Code: W5), a 5-pin surface-mount package with exposed pad for thermal enhancement. PCB layout requires connection of the exposed pad to ground plane for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 4) | Regulated output | Delivers stable 5.0V to load; must be decoupled with ≥1µF ceramic capacitor placed adjacent to pin. |
| VIN (Pin 3) | Input supply | Accepts 3–45V; requires 1µF ceramic decoupling close to pin to suppress input transients. |
| GND (Pins 1,2,5) | Ground reference | Three GND terminals provide low-impedance return path; pins 1 & 2 connect to internal ground, pin 5 is exposed pad tied to PCB ground plane. |
| EN (Pin 5) | Enable control | Active-high logic input tolerant to 45V - enables direct connection to battery or ignition-switched rail without resistor divider. |
| NC (Pin ?) | No connect | No internal connection; recommended to tie to GND for thermal conduction and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| 45V Input Tolerance | Enables single-supply operation across full automotive voltage range including load dump without external TVS or clamping. |
| 2.1µA Quiescent Current | Reduces standby current in always-on ECUs to <10µA system-level, extending battery life in parked vehicles. |
| Fast Transient Response | Prevents undershoot/overshoot during 10–100mA load steps, ensuring reliable MCU clocking and communication integrity. |
| AEC-Q100 Grade 1 | Qualified for -40°C to +125°C operation with PPAP documentation support - meets OEM requirements for body electronics and BMS. |
| Integrated Protection | Short-circuit current limit (500mA) and thermal shutdown (+150°C) eliminate need for external fault-handling circuitry. |
Applications
| Powering MCUs and CAN/LIN Transceivers | Automotive Head Units |
|---|---|
Use Scenario: Supplying 5.0V to an ARM Cortex-M7 MCU and dual CAN FD transceivers in a zone controller. IC Role / Device Role / Timing Role: Primary post-regulator delivering clean, stable 5.0V with fast transient recovery to maintain real-time interrupt latency and bus timing margins. Use Value: 85dB PSRR at 1kHz attenuates 12V rail noise from infotainment DC/DC, preventing CAN bit errors during high-power audio playback. | Use Scenario: Powering display driver ICs, touch controller, and audio codec in a 12V automotive head unit. IC Role / Device Role / Timing Role: Secondary LDO providing isolated 5.0V domain with independent enable control for selective subsystem power gating. Use Value: 2.1µA IQ enables "soft-off" mode where display and audio remain responsive to wake commands while drawing <15µA total system current. |
| EV and HEV Battery Management Systems | Body Control Modules |
Use Scenario: Biasing analog front-end (AFE) ICs and isolated gate drivers in a 400V EV battery pack monitor. IC Role / Device Role / Timing Role: High-voltage-tolerant LDO converting 12V auxiliary supply to 5.0V for precision ADC references and digital isolator side power. Use Value: 45V input rating eliminates need for pre-regulator stage during 24V system load dump events, reducing BOM count and board area. | Use Scenario: Powering door module microcontroller, window motor drivers, and LIN slave nodes in a distributed body control architecture. IC Role / Device Role / Timing Role: Centralized 5.0V regulator with EN pin driven by body controller to sequence power to submodules during wake-up. Use Value: EN pin rated to 45V allows direct connection to unregulated battery rail - simplifies wiring harness and removes level-shift components. |
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), higher IQ (45µA), no AEC-Q100 qualification, SOT23-5 package. | Restricted to 5V-only systems; unsuitable for load dump or cold-crank environments. | Select only for non-automotive, low-cost consumer applications with stable 5V input. |
| TPS7B8750QKVURQ1 | Higher IQ (25µA), lower dropout (200mV@300mA), AEC-Q100 Grade 1, same 45V input, but larger VSON-8 package. | Requires more PCB area and different thermal layout; lacks EN pin voltage tolerance above 6V. | Choose when higher output current stability or lower dropout is prioritized over footprint and EN flexibility. |
Compared with TLV73350PDBVR and TPS7B8750QKVURQ1, AP7375Q-50W5-7 uniquely combines 45V EN tolerance, 2.1µA IQ, and SOT25 footprint - enabling compact, battery-direct designs in harsh automotive environments without external level shifters or pre-regulators.
Availability
AP7375Q-50W5-7 is available at Aetrix Electronics and suitable for automotive body control modules, EV battery management systems, and head unit power sequencing requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle continuity.
Supply support for AP7375Q-50W5-7 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 series belongs to Diodes' automotive-qualified power management portfolio, designed specifically for high-reliability, wide-input-voltage LDO applications in engine control, chassis, and body electronics.
FAQ
What is the maximum allowable input voltage for AP7375Q-50W5-7 during load dump conditions?
The AP7375Q-50W5-7 supports up to 45V continuous input voltage and withstands transient spikes per ISO 7637-2 Pulse 5a (load dump), with absolute maximum rating of 55V. Its internal protection remains active up to 45V, making it suitable for direct connection to 12V/24V automotive batteries without external clamping diodes.
Can the EN pin be driven directly from a 24V battery rail?
Yes - the EN pin is rated for voltages up to 45V relative to GND, allowing direct connection to 24V battery rails or ignition-switched lines without resistive dividers or level-shifting circuitry. This simplifies design and improves reliability in multi-voltage automotive architectures.
What is the minimum output capacitance required for stability?
The AP7375Q-50W5-7 requires a minimum 1µF ceramic output capacitor (X5R or X7R dielectric) placed adjacent to the VOUT and GND pins. Increasing capacitance to 10µF improves load transient response and reduces output voltage deviation during step-load changes.
How does thermal performance differ between SOT25 and U-DFN2020-6 packages?
The SOT25 package has θJA = 135.5°C/W, while the U-DFN2020-6 (SWP) achieves 99.5°C/W. However, the U-DFN2020-6's smaller size limits copper area for heat spreading. In practice, SOT25 offers better thermal margin in constrained layouts due to its larger leadframe and proven thermal pad implementation in automotive PCBs.
AP7375Q-50W5-7 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, 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
- Supplier Device Package:
- SOT-25
AP7375Q-50W5-7 FAQ
1.How can I place an order for AP7375Q-50W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7375Q-50W5-7 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-50W5-7 reliable?
The price and inventory of AP7375Q-50W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7375Q-50W5-7 is usually 5 days.
3.What payment methods are accepted for AP7375Q-50W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7375Q-50W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7375Q-50W5-7?
AP7375Q-50W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7375Q-50W5-7 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-50W5-7?
For technical support, including AP7375Q-50W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7375Q-50W5-7 requirements.
6.How does Aetrix verify that AP7375Q-50W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7375Q-50W5-7 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-50W5-7 meets industry standards.
7.What is the process for return or replacement of AP7375Q-50W5-7?
All AP7375Q-50W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7375Q-50W5-7, 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-50W5-7 part is unused and in its original packaging.
Return procedure for AP7375Q-50W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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