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Diodes Incorporated AP7315DQ-15W5-7
- Part No.:
- AP7315DQ-15W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315DQ-15W5-7.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7315DQ-15W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator with fixed 1.5V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and integrated output discharge. It operates from 1.7V to 5.25V input, supports –40°C to +125°C ambient, and is qualified to AEC-Q100 Grade 1 in SOT25 for noise-sensitive ADAS camera power rails.
For engineers reviewing the AP7315DQ-15W5-7 datasheet, AP7315DQ-15W5-7 pinout, AP7315DQ-15W5-7 application, or AP7315DQ-15W5-7 equivalent, this page delivers verified technical context, validated pin functions, confirmed automotive use cases, and real-world alternative comparisons - all grounded in Diodes' official DS41596 Rev. 3-2 specification.
Technical Context
The AP7315DQ-15W5-7 implements a CMOS-based LDO architecture with internal N-channel pass transistor, enabling ultra-low quiescent current (35µA typ) and fast load transient response. Its enable-controlled shutdown reduces standby current to 0.01µA, while built-in auto-discharge (30Ω typical on-resistance) actively pulls VOUT to GND when disabled.
It features fold-back short-circuit protection (55mA clamp), thermal shutdown, and guaranteed 150mA output across –40°C to +125°C. The device achieves 75dB ripple rejection at 1kHz and maintains stability with ≥0.47µF ceramic output capacitors - critical for RF-supply filtering in automotive infotainment and wireless communication modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% - ensures stable core voltage for 1.5V logic rails in automotive sensors and microcontrollers. |
| Max Output Current | 150mA continuous - sufficient for powering single-core MCUs, camera image signal processors, or RF transceivers in ADAS subsystems. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy 3.3V or 5V domains. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in analog front-ends of radar receivers and audio amplifiers. |
| Quiescent Current | 35µA typical - enables always-on functionality in vehicle wake-up circuits without excessive battery drain. |
| Dropout Voltage | 0.50V max at 150mA - allows operation down to VIN = 2.0V, supporting wide-input battery-supplied systems during cold-crank conditions. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO control without level-shifting. |
Pinout & Package
SOT25 (5-pin) package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and 0.016g mass. Thermal resistance θJA = 179°C/W on JEDEC High-K board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power Input | Accepts 1.7V–5.25V unregulated supply; requires ≥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/OFF; must not float - tie to VIN if unused. |
| 4 NC | No Connection | Internally unconnected; no PCB trace or solder pad required; avoid routing signals nearby. |
| 5 VOUT | Regulated Output | Delivers 1.5V ±1% with auto-discharge active; requires local 0.47µF ceramic capacitor to ensure stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive operation from –40°C to +125°C junction temperature with PPAP support. |
| Integrated output discharge | 30Ω typical N-channel switch discharges VOUT within microseconds upon disable - prevents floating bias in downstream circuitry. |
| High PSRR & low noise | 75dB rejection at 1kHz and 60µVrms noise enable clean power for RF ICs and precision ADCs in ADAS cameras. |
| Ultra-low quiescent current | 35µA typical operating current and 0.01µA shutdown current extend battery life in always-on vehicle monitoring systems. |
| Wide input voltage range | 1.7V–5.25V operation supports direct connection to LiFePO₄ batteries, 3.3V rails, or post-DC/DC filtered supplies. |
Applications
| ADAS Camera Power Supply | Automotive Infotainment Core Rail |
|---|---|
|
Use Scenario: Powers image signal processor (ISP) and sensor interface in forward-facing driver-assist camera modules. IC Role / Device Role / Timing Role: Provides ultra-low-noise 1.5V bias for analog pixel readout and clock generation circuitry. Use Value: 60µVrms noise prevents fixed-pattern noise in captured images; 75dB PSRR rejects switching artifacts from nearby PMICs. |
Use Scenario: Supplies 1.5V core voltage to ARM Cortex-M7 MCU in head-unit infotainment system. IC Role / Device Role / Timing Role: Delivers stable, low-ripple power to MCU core domain during dynamic CPU load transitions. Use Value: 150mA capability and fast load transient response prevent brownouts during burst-mode execution; AEC-Q100 ensures reliability over 15-year vehicle lifetime. |
| Radar Receiver Biasing | Automotive Wireless Communication Module |
|
Use Scenario: Generates clean 1.5V supply for low-noise amplifier (LNA) stages in 77GHz radar receiver chains. IC Role / Device Role / Timing Role: Acts as final-stage LDO filter before RF analog signal path, minimizing phase noise contribution. Use Value: 75dB PSRR at 1kHz suppresses power rail modulation sidebands that degrade radar resolution; ±1% accuracy maintains consistent gain calibration. |
Use Scenario: Powers Bluetooth Low Energy (BLE) or Wi-Fi SoC in telematics control unit (TCU) requiring always-on connectivity. IC Role / Device Role / Timing Role: Provides regulated 1.5V to SoC I/O or memory interface under variable battery voltage (9V–16V). Use Value: 35µA quiescent current minimizes parasitic drain during sleep mode; auto-discharge prevents back-powering of disabled SoC sections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315Q-15W5-7 | No output discharge function; EN pin controls enable only; 0Ω discharge path absent. | Suitable where VOUT must remain floating after shutdown (e.g., retention memory rails). | Select when auto-discharge is unnecessary and cost optimization is prioritized - same footprint and electrical specs except discharge behavior. |
| TLD1115-15ES | Higher 250mA output, wider 2.5V–42V input, but higher 65µA IQ and 120µVrms noise. | Targeted at LED driver biasing, not low-noise analog/RF applications. | Choose only if higher current or extended input range is mandatory; avoid for noise-critical 1.5V analog rails due to 2× higher output noise. |
Compared with AP7315DQ-15W5-7, the AP7315Q-15W5-7 offers identical performance minus discharge - ideal for cost-sensitive non-discharge use cases - while the TLD1115-15ES trades noise performance for industrial-grade input range and current, making it unsuitable for precision ADAS imaging or RF biasing.
Availability
AP7315DQ-15W5-7 is available at Aetrix Electronics and suitable for automotive ADAS camera power supplies, infotainment MCU core rails, and radar receiver biasing requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle continuity.
Supply support for AP7315DQ-15W5-7 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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for automotive, industrial, and consumer markets.
The AP7315 series belongs to Diodes' automotive-qualified LDO portfolio, designed specifically to meet stringent noise, PSRR, and thermal requirements of advanced driver-assistance systems and in-vehicle networking applications.
FAQ
What is the purpose of the NC pin (Pin 4) on AP7315DQ-15W5-7?
Pin 4 is a no-connect terminal with no internal bond wire or circuit connection. It must remain unconnected on the PCB - no trace, pad, or solder should be applied. Routing signals near this pin is discouraged to avoid parasitic coupling, and its presence maintains mechanical symmetry in the SOT25 package for consistent reflow behavior.
Does AP7315DQ-15W5-7 require external capacitors, and what values are recommended?
Yes: a minimum 0.47µF ceramic capacitor is required between VIN and GND, and another 0.47µF ceramic capacitor between VOUT and GND. Both must be placed as close as possible to their respective pins. For high-dynamic-load applications like camera ISPs, adding a 10µF low-ESR tantalum or polymer capacitor in parallel with the ceramic improves transient response without compromising stability.
How does the output discharge function operate, and what is its on-resistance?
When EN is pulled low, an internal 30Ω (typical) N-channel MOSFET connects VOUT to GND, actively discharging output capacitance. This prevents residual voltage from back-powering downstream circuitry or causing undefined logic states. Discharge time depends on COUT; for example, a 10µF capacitor discharges to <100mV in ~330µs (t ≈ 3 × RDS(ON) × COUT).
Can AP7315DQ-15W5-7 be used outside automotive applications?
Yes - its electrical specifications (1.7V–5.25V input, 150mA output, 60µVrms noise) are fully functional in industrial and medical applications. However, the AEC-Q100 qualification, PPAP documentation, and IATF 16949 manufacturing are specific to automotive use; non-automotive users benefit from the same robustness but should verify regulatory compliance (e.g., ISO 13485, IEC 62368) separately.
AP7315DQ-15W5-7 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.49V @ 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-15W5-7 FAQ
1.How can I place an order for AP7315DQ-15W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315DQ-15W5-7 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-15W5-7 reliable?
The price and inventory of AP7315DQ-15W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315DQ-15W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315DQ-15W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315DQ-15W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315DQ-15W5-7?
AP7315DQ-15W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315DQ-15W5-7 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-15W5-7?
For technical support, including AP7315DQ-15W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315DQ-15W5-7 requirements.
6.How does Aetrix verify that AP7315DQ-15W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315DQ-15W5-7 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-15W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315DQ-15W5-7?
All AP7315DQ-15W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315DQ-15W5-7, 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-15W5-7 part is unused and in its original packaging.
Return procedure for AP7315DQ-15W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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