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Diodes Incorporated AP7315Q-33W5-7
- Part No.:
- AP7315Q-33W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315Q-33W5-7.pdf
- Description:
- IC REG LINEAR 3.3V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:5,193
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Product details
Overview
AP7315Q-33W5-7 from Diodes Incorporated is an automotive-grade 3.3V fixed-output LDO regulator in SOT25 package, delivering 150mA output current with ±1% voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, AEC-Q100 Grade 1 qualification, and is designed for noise-sensitive automotive power rails including ADAS camera and infotainment supplies.
For engineers reviewing the AP7315Q-33W5-7 datasheet, AP7315Q-33W5-7 pinout, AP7315Q-33W5-7 application, or AP7315Q-33W5-7 equivalent, key selection criteria include its low-noise 3.3V regulation under 150mA load, high PSRR performance across 100Hz–1MHz, thermal stability up to +125°C ambient, and automotive-compliant enable/shutdown behavior with <1.0µA standby current.
Technical Context
The AP7315Q-33W5-7 employs a CMOS-based LDO architecture with internal voltage reference and error amplifier, optimized for fast line/load transient response and minimal dropout (210mV typical at 150mA for 3.3V output). Its EN pin provides precise logic-level control with 0.5V max low threshold and 1.3V min high threshold, ensuring robust operation in noisy automotive environments.
It integrates short-circuit protection limiting output current to ~55mA during VOUT-to-GND fault, and operates across 1.7V–5.25V input range while maintaining stable 3.3V output. Thermal shutdown and foldback current limiting protect against sustained overloads, with junction temperature rated from –40°C to +150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% - ensures stable supply for 3.3V logic, RF ICs, and camera sensors without external feedback. |
| Max Output Current | 150mA continuous - supports mid-power automotive subsystems like display timing controllers and CAN transceiver bias rails. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding infotainment or ADAS modules. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in analog front-ends of radar receivers and audio codecs. |
| Quiescent Current | 35µA typical - enables always-on functionality in vehicle wake-up circuits without excessive battery drain. |
| Dropout Voltage | 210mV typical at 150mA - allows operation from 3.51V input, compatible with degraded 12V system rails after buck conversion. |
| 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) surface-mount package with matte tin-plated leads, moisture sensitivity level 1 per J-STD-020, and 0.016g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Power Input | Accepts 1.7V–5.25V unregulated input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 GND | Ground Reference | Primary return path for input/output currents; 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 solder should contact this pad to avoid parasitic coupling or mechanical stress. |
| 5 VOUT | Regulated Output | Delivers stable 3.3V ±1%; requires local 0.47µF ceramic output capacitor with low ESR for transient stability. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for automotive use from –40°C to +125°C ambient, supporting PPAP documentation and IATF 16949 manufacturing. |
| High PSRR (75dB @ 1kHz) | Rejects ripple from switching regulators powering adjacent domains, reducing need for additional filtering in compact ECUs. |
| Low Output Noise (60µVrms) | Minimizes jitter in clock buffers and SNR degradation in ADC reference supplies used in sensor fusion systems. |
| Ultra-Low Quiescent Current (35µA) | Enables >10-year battery hold-up in telematics modules operating in sleep mode with periodic wake-up events. |
| Fast Load Transient Response | Stabilizes within <100µs after 1mA ↔ 150mA step load change-critical for burst-mode imaging in surround-view cameras. |
Applications
| Infotainment Power Supply | ADAS Camera POL |
|---|---|
|
Use Scenario: Powering SoC I/O banks and touch controller in head-unit displays. IC Role / Device Role / Timing Role: Primary 3.3V LDO supplying noise-sensitive digital interfaces (I²C, SPI, GPIO). Use Value: 75dB PSRR prevents audible buzz in audio amplifiers caused by DC/DC switching coupling into shared power planes. |
Use Scenario: Local regulation for image sensor and ISP in rear-view or surround-view camera modules. IC Role / Device Role / Timing Role: Point-of-load regulator delivering clean 3.3V to CIS interface and MIPI PHY circuitry. Use Value: 60µVrms noise ensures <1 LSB error in 12-bit image sensor ADC conversions under full illumination. |
| Automotive RF Supply | Wireless Communication Module |
|
Use Scenario: Biasing VCOs, LNAs, and mixer stages in UWB or Bluetooth LE transceivers. IC Role / Device Role / Timing Role: Low-noise 3.3V source isolating RF section from noisy digital domain. Use Value: Sub-100µV noise floor maintains phase noise performance below –110dBc/Hz at 1MHz offset for compliant RF emission. |
Use Scenario: Powering cellular modem baseband and GNSS receiver in telematics control units. IC Role / Device Role / Timing Role: Always-on LDO enabling rapid network reconnection after ignition cycle transitions. Use Value: 35µA IQ allows >30-day battery backup during vehicle dormancy without compromising GPS cold-start time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315DQ-33W5-7 | Includes integrated output discharge (30Ω NMOS) to rapidly pull VOUT to GND during shutdown. | Required where fast power-down sequencing is needed to prevent back-powering of downstream logic or EEPROM writes. | Select DQ variant only if controlled discharge is mandated by system-level power sequencing requirements. |
| TLD1130FVQXUMA1 (Infineon) | Higher 300mA output, wider 2.5V–42V input, but higher 70µA IQ and 120µVrms noise. | Better suited for high-current loads like LED drivers or solenoid bias, not low-noise analog rails. | Choose only when >150mA output or extended input range outweighs noise and quiescent current penalties. |
Compared with AP7315DQ-33W5-7, the AP7315Q-33W5-7 avoids discharge-related leakage and simplifies layout; versus TLD1130FVQXUMA1, it delivers superior noise and IQ for precision analog subsystems despite lower current capability.
Availability
AP7315Q-33W5-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera power, and wireless communication modules requiring stable component supply with AEC-Q100 compliance and full traceability.
Supply support for AP7315Q-33W5-7 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 test facilities certified to IATF 16949 for automotive products.
The AP7315Q series targets automotive power management, specifically delivering ultra-low-noise, high-PSRR LDO regulation for safety-critical and sensor-rich electronic control units operating in harsh thermal and electrical environments.
FAQ
What is the minimum input voltage required for stable 3.3V output at 150mA?
The AP7315Q-33W5-7 requires a minimum input voltage of 3.51V (3.3V + 210mV typical dropout) to maintain regulation at full 150mA load. At lighter loads, VIN can be as low as 3.3V + 180mV, but 3.51V ensures margin across temperature and process variation per datasheet Section 7.1.
Does AP7315Q-33W5-7 require an external output capacitor, and what value is recommended?
Yes, a minimum 0.47µF ceramic capacitor is required between VOUT and GND for stability and transient response. The datasheet specifies low-ESR X5R/X7R types placed within 2mm of the VOUT and GND pins; larger values (e.g., 2.2µF) improve load-step immunity but do not affect basic stability.
How does the EN pin behave during power-up, and what is the recommended handling if not used?
The EN pin must be driven to a defined logic state-floating is prohibited. If unused, tie EN directly to VIN to ensure immediate turn-on at power-up; pulling EN low via a resistor to GND will force shutdown. Thresholds are 0.5V max for low and 1.3V min for high, verified across –40°C to +125°C.
Is AP7315Q-33W5-7 qualified for use in safety-critical ADAS applications?
Yes-it is AEC-Q100 Grade 1 qualified (–40°C to +125°C), manufactured in IATF 16949-certified facilities, and supports PPAP documentation. While not ASIL-certified itself, it meets functional safety requirements as a power-supply component in ASIL-B/C systems when used per manufacturer-recommended layout and derating guidelines.
AP7315Q-33W5-7 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.29V @ 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
AP7315Q-33W5-7 FAQ
1.How can I place an order for AP7315Q-33W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315Q-33W5-7 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 AP7315Q-33W5-7 reliable?
The price and inventory of AP7315Q-33W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315Q-33W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315Q-33W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315Q-33W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315Q-33W5-7?
AP7315Q-33W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315Q-33W5-7 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 AP7315Q-33W5-7?
For technical support, including AP7315Q-33W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315Q-33W5-7 requirements.
6.How does Aetrix verify that AP7315Q-33W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315Q-33W5-7 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 AP7315Q-33W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315Q-33W5-7?
All AP7315Q-33W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315Q-33W5-7, 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 AP7315Q-33W5-7 part is unused and in its original packaging.
Return procedure for AP7315Q-33W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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