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Diodes Incorporated AP7315DQ-12W5-7
- Part No.:
- AP7315DQ-12W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315DQ-12W5-7.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7315DQ-12W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator with fixed 1.2V output, enable control, and integrated output discharge. It delivers ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and ultra-low 35µA quiescent current. Designed for noise-sensitive automotive power rails including ADAS camera sensors and infotainment subsystems.
For engineers reviewing the AP7315DQ-12W5-7 datasheet, AP7315DQ-12W5-7 pinout, AP7315DQ-12W5-7 application, or AP7315DQ-12W5-7 equivalent, this LDO supports AEC-Q100 Grade 1 qualification, operates from −40°C to +125°C ambient, features SOT25 packaging with verified 5-pin terminal mapping, and provides validated discharge functionality for fast VOUT ramp-down during shutdown.
Technical Context
The AP7315DQ-12W5-7 uses a CMOS-based LDO architecture with internal N-channel pass transistor and precision bandgap reference. Its enable input (EN) controls regulation state with defined 0–0.5V low threshold and 1.3–5.25V high threshold, and its built-in discharge path (30Ω typical on-resistance) actively pulls VOUT to GND when disabled.
It maintains stable operation with 0.47µF ceramic input/output capacitors, achieves 0.38V typical dropout at 150mA for 1.2V output, and sustains 75dB ripple rejection across 1kHz while operating over 1.7V–5.25V input range - critical for automotive battery-supplied systems with wide VIN transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% - ensures precise biasing for low-voltage microcontrollers and image sensors without external feedback. |
| Max Output Current | 150mA continuous - sufficient for powering single-core MCUs, CAN transceivers, or small FPGA I/O banks in automotive modules. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding infotainment or ADAS domain controllers. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in RF receiver supply rails and analog sensor front-ends. |
| Quiescent Current | 35µA typical - enables always-on functionality in vehicle body electronics with <10µA system standby budgets. |
| Dropout Voltage | 0.50V max at 150mA - allows operation down to 1.7V input, supporting cold-crank scenarios in 12V automotive systems. |
| Operating Temp | −40°C to +125°C ambient - meets under-hood and cabin-mounted ECU thermal requirements per AEC-Q100 Grade 1. |
Pinout & Package
SOT25 (5-pin, 2.8mm × 2.9mm × 1.3mm) package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and 0.016g unit weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power Input | Accepts 1.7V–5.25V unregulated input; requires local 0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 GND | Ground Reference | Primary return path for input/output current; must connect directly to low-impedance ground plane to minimize noise coupling. |
| 3 EN | Enable Control | Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; must not float - tie to VIN if unused. |
| 4 NC | No Connection | Internally unconnected; no PCB trace or pad required - leave floating per manufacturer recommendation. |
| 5 VOUT | Regulated Output | Delivers 1.2V ±1% to load; includes integrated 30Ω discharge FET to rapidly drain output capacitance upon disable. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for −40°C to +125°C operation in automotive environments, supporting PPAP documentation and IATF 16949 manufacturing. |
| Integrated Output Discharge | 30Ω typical on-resistance discharge path ensures VOUT falls to GND within microseconds after EN deactivation - prevents back-powering of downstream circuitry. |
| High PSRR & Low Noise | 75dB rejection at 1kHz and 60µVrms broadband noise enable clean power delivery to RF receivers and high-resolution ADCs. |
| Ultra-Low Quiescent Current | 35µA typical IQ allows use in always-on domains (e.g., door module wake-up circuits) without compromising battery life. |
| Stable with Small Ceramic Caps | Guaranteed stability with 0.47µF X7R/X5R ceramic output capacitor - eliminates need for bulk electrolytics and saves board space. |
Applications
| Infotainment Power Supply | ADAS Camera Sensor Rail |
|---|---|
|
Use Scenario: Powers audio DSP core and display interface logic in head-unit systems exposed to 12V battery fluctuations and RF interference. IC Role / Device Role / Timing Role: Low-noise post-regulator providing clean 1.2V domain for digital signal processing blocks. Use Value: 60µVrms noise and 75dB PSRR prevent audible artifacts in amplified audio output and pixel corruption in HDMI video streams. |
Use Scenario: Supplies image sensor analog front-end and ISP core in forward-facing ADAS cameras mounted behind windshield. IC Role / Device Role / Timing Role: Precision voltage source delivering stable 1.2V to CIS analog bias and low-jitter clock generation circuitry. Use Value: ±1% output accuracy and −40°C to +125°C operation ensure consistent sensor gain calibration and SNR across full vehicle temperature range. |
| Automotive Wireless Communication | Body Control Module Subsystem |
|
Use Scenario: Powers Bluetooth LE and Wi-Fi 6 companion ICs in connected car telematics units requiring low standby power and EMI resilience. IC Role / Device Role / Timing Role: Always-on LDO enabling fast wake-from-sleep transitions while rejecting noise from cellular modem switching. Use Value: 35µA quiescent current extends key-off battery life; 0.50V dropout allows operation during 12V cold-crank dips to 7V. |
Use Scenario: Regulates 1.2V rail for LIN transceiver and door-lock MCU in distributed body electronics nodes. IC Role / Device Role / Timing Role: Enable-controlled power switch ensuring controlled power sequencing and safe reset behavior during ignition cycles. Use Value: Integrated discharge prevents latch-up during power-down; EN pin thresholds align with standard automotive GPIO logic levels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315Q-12W5-7 | No output discharge function; EN pin identical; same electrical specs except discharge path omitted. | Used where rapid VOUT discharge is unnecessary, e.g., non-critical logic rails without back-powering risk. | Select when cost sensitivity outweighs discharge requirement and system layout isolates VOUT from other supplies. |
| TLD1120FV | 200mA rated, 1.2V fixed, AEC-Q100 Grade 1, but higher 55µA IQ and 65dB PSRR at 1kHz. | Targeted at LED driver bias rails; lacks dedicated discharge FET and has different thermal footprint (HTSOP-8). | Choose only if higher current headroom is needed and board space allows larger HTSOP-8 package; verify EN compatibility. |
Compared with AP7315Q-12W5-7, the AP7315DQ-12W5-7 adds critical discharge capability for safety-critical shutdown sequences, while TLD1120FV trades off noise performance and package size for marginally higher current - making the AP7315DQ-12W5-7 optimal for compact, noise-sensitive automotive LDO applications requiring guaranteed VOUT collapse.
Availability
AP7315DQ-12W5-7 is available at Aetrix Electronics and suitable for automotive infotainment power supplies, ADAS camera sensor rails, and body control module subsystems requiring stable component supply with AEC-Q100 compliance and traceable sourcing.
Supply support for AP7315DQ-12W5-7 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 company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
The AP7315Q series targets automotive power management applications requiring high reliability, low noise, and AEC-Q100 qualification - specifically engineered for noise-sensitive domains like ADAS, infotainment, and wireless connectivity modules.
FAQ
What is the purpose of the NC pin (Pin 4) on AP7315DQ-12W5-7?
Pin 4 is a no-connect terminal with no internal connection. It must remain unconnected on the PCB - no trace, pad, or solder mask opening is required. This pin exists solely for mechanical symmetry in the SOT25 package and does not affect electrical performance or thermal behavior.
Can AP7315DQ-12W5-7 operate with input voltage below 1.7V?
No. The absolute minimum input voltage is 1.7V per datasheet specifications. Operation below this threshold risks loss of regulation, increased dropout, or failure to maintain 1.2V output. During automotive cold-crank events, ensure upstream supply remains ≥1.7V or implement brown-out detection before enabling the LDO.
How does the output discharge function behave during EN deactivation?
When EN is pulled low, the internal 30Ω discharge FET activates immediately, sinking current from VOUT to GND. This discharges typical 1–10µF output capacitance in <100µs, preventing back-powering of upstream regulators or unintended logic states in downstream ICs during power-down sequencing.
Is AP7315DQ-12W5-7 compatible with lead-free reflow profiles?
Yes. It is fully RoHS 3 compliant, halogen- and antimony-free, and qualified for lead-free reflow per JEDEC J-STD-020. The SOT25 package supports peak reflow temperatures up to 260°C (MSL Level 1), with matte tin plating ensuring reliable solderability using standard SnAgCu paste and profile.
AP7315DQ-12W5-7 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):
- 5.25V
- Voltage - Output (Min/Fixed):
- 1.2V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.64V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 60 µA
- Current - Supply (Max):
- 100 µA
- PSRR:
- 75dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Short Circuit
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7315DQ-12W5-7 FAQ
1.How can I place an order for AP7315DQ-12W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315DQ-12W5-7 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 AP7315DQ-12W5-7 reliable?
The price and inventory of AP7315DQ-12W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315DQ-12W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315DQ-12W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315DQ-12W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315DQ-12W5-7?
AP7315DQ-12W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315DQ-12W5-7 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 AP7315DQ-12W5-7?
For technical support, including AP7315DQ-12W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315DQ-12W5-7 requirements.
6.How does Aetrix verify that AP7315DQ-12W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315DQ-12W5-7 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 AP7315DQ-12W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315DQ-12W5-7?
All AP7315DQ-12W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315DQ-12W5-7, 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 AP7315DQ-12W5-7 part is unused and in its original packaging.
Return procedure for AP7315DQ-12W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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