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Diodes Incorporated AP7315Q-12W5-7
- Part No.:
- AP7315Q-12W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315Q-12W5-7.pdf
- Description:
- IC REG LINEAR 1.2V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:2,895
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Product details
Overview
AP7315Q-12W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator with fixed 1.2V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features enable control, AEC-Q100 Grade 1 qualification, and SOT25 packaging-designed for noise-sensitive power rails in ADAS camera modules and infotainment subsystems.
For engineers reviewing the AP7315Q-12W5-7 datasheet, AP7315Q-12W5-7 pinout, AP7315Q-12W5-7 application, or AP7315Q-12W5-7 equivalent, key selection criteria include guaranteed 150mA output under -40°C to +125°C ambient, low-noise regulation for RF supply, EN-controlled shutdown with <1.0µA standby current, and compatibility with 0.47µF ceramic input/output capacitors.
Technical Context
The AP7315Q-12W5-7 employs a CMOS-based LDO architecture optimized for automotive transient immunity and low-noise operation. Its internal reference and error amplifier deliver ±1% output voltage accuracy across temperature and load, while the high-PSRR design suppresses ripple from noisy upstream DC/DC converters.
Enable logic operates with VEN(LOW) ≤ 0.5V and VEN(HIGH) ≥ 1.3V, ensuring robust digital interface compatibility. The device lacks output discharge (non-DQ variant), simplifying bias sequencing in systems where controlled VOUT decay is not required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2V ±1% - ensures stable core voltage for low-power microcontrollers and sensors without external feedback. |
| Max Output Current | 150mA continuous - supports single-rail powering of camera ISPs or CAN transceivers without thermal derating at +125°C. |
| PSRR | 75dB at 1kHz - attenuates switching noise from adjacent buck converters feeding infotainment SoCs. |
| Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in RF front-end biasing and ADC reference supplies. |
| Quiescent Current | 35µA typical - enables always-on functionality in vehicle wake-up circuits with minimal battery drain. |
| Dropout Voltage | 0.50V max at 150mA (for 1.2V output) - allows operation from 1.7V input, compatible with partially discharged 2-cell Li-ion or 3.3V rail droop. |
| Operating Temp | -40°C to +125°C ambient - validated for under-hood and dashboard-mounted ADAS ECUs per AEC-Q100 Grade 1. |
Pinout & Package
SOT25 (5-pin, 2.8mm × 1.6mm × 1.1mm) 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 input; requires 0.47µF ceramic capacitor placed adjacent to minimize impedance and prevent instability during load transients. |
| 2 GND | Ground Reference | Primary return path for input/output currents; must connect directly to low-impedance ground plane to maintain PSRR and thermal performance. |
| 3 EN | Enable Control | Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; floating state is prohibited and may cause undefined output behavior. |
| 4 NC | No Connection | Internally unconnected; must remain unbonded and unconnected on PCB to avoid parasitic coupling or ESD path disruption. |
| 5 VOUT | Regulated Output | Delivers 1.2V ±1% to load; requires 0.47µF ceramic capacitor near pin to ensure stability and transient response per datasheet layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 Qualified | Validated for automotive use from -40°C to +125°C junction temperature, supporting PPAP documentation and IATF 16949 manufacturing. |
| High PSRR (75dB @ 1kHz) | Rejects ripple from switching regulators in multi-rail automotive systems, reducing need for additional filtering stages. |
| Low 60µVrms Output Noise | Enables clean power delivery to RF receivers and high-resolution analog sensors without post-regulation filtering. |
| Ultra-Low 35µA Quiescent Current | Extends battery life in always-on vehicle modules such as door handle proximity sensors and telematics wake-up circuits. |
| Wide 1.7V–5.25V Input Range | Supports direct connection to varied automotive rails including 2.5V, 3.3V, and 5V domains without intermediate regulation. |
Applications
| Infotainment Power Supplies | Automotive RF Supply |
|---|---|
Use Scenario: Powering audio DSPs and display controllers in head-unit systems subject to battery voltage fluctuations and engine cranking transients. IC Role / Device Role / Timing Role: Primary 1.2V core regulator for low-power SoC domains requiring tight voltage tolerance and low noise. Use Value: Maintains ±1% output accuracy across -40°C to +125°C and rejects alternator ripple via 75dB PSRR, eliminating audible noise in amplified audio paths. |
Use Scenario: Biasing VCOs and LNAs in cellular/V2X modems where supply noise directly impacts phase noise and receiver sensitivity. IC Role / Device Role / Timing Role: Low-noise local regulation stage decoupling RF ICs from noisy main 3.3V system rail. Use Value: 60µVrms noise floor prevents degradation of EVM and ACLR in LTE/5G transceivers operating in congested electromagnetic environments. |
| Cameras | Automotive POL in ADAS |
Use Scenario: Providing clean 1.2V supply to image signal processors (ISPs) and MIPI CSI-2 serializers in surround-view camera modules. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to ISP die to minimize IR drop and noise coupling. Use Value: Fast load transient response (<100µs settling) and 150mA capability support burst-mode sensor readout without VOUT sag or frame corruption. |
Use Scenario: Generating 1.2V core voltage for radar SoCs and vision processors in forward collision warning and lane departure ECUs. IC Role / Device Role / Timing Role: Automotive-compliant LDO delivering fault-tolerant power with EN-controlled sequencing during system boot and sleep transitions. Use Value: AEC-Q100 qualification and 125°C ambient rating ensure reliability in high-temperature ADAS housings, while EN pin enables synchronized power-down with host MCU. |
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 | Fixed 1.2V, no output discharge, SOT25, 150mA, ±1% accuracy | Standard automotive LDO for general-purpose 1.2V rails | Baseline part for designs requiring minimal BOM count and no VOUT discharge. |
| AP7315DQ-12W5-7 | Same specs except includes active output discharge (30Ω NMOS) to rapidly pull VOUT to GND when disabled | Required where fast VOUT decay prevents back-powering or latch-up in downstream logic | Select only if system-level timing analysis confirms need for sub-100µs VOUT discharge; adds minor leakage in shutdown. |
Compared with AP7315Q-12W5-7, the AP7315DQ-12W5-7 adds output discharge capability but shares identical electrical performance, thermal characteristics, and automotive qualification-making it a functional superset for designs needing controlled turn-off behavior without sacrificing noise or efficiency.
Availability
AP7315Q-12W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and vehicle telematics units requiring stable component supply with full AEC-Q100 traceability and PPAP support.
Supply support for AP7315Q-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 manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability components for automotive, industrial, and computing markets.
The AP7315Q series belongs to Diodes' automotive-qualified LDO portfolio, engineered specifically for noise-sensitive, high-temperature point-of-load regulation in ADAS, infotainment, and body electronics.
FAQ
What is the minimum input voltage required for AP7315Q-12W5-7 to regulate 1.2V output at 150mA?
The dropout voltage is 0.50V maximum at 150mA for the 1.2V variant. Therefore, the minimum valid input voltage is 1.2V + 0.50V = 1.7V, matching the datasheet's specified 1.7V lower limit for VIN. Operation below 1.7V results in unregulated output and potential brownout of downstream circuitry.
Can AP7315Q-12W5-7 be used without the EN pin connected?
No. The EN pin must not be left floating. If enable functionality is unused, it must be tied directly to VIN to ensure the regulator remains enabled. Floating EN introduces risk of unintended shutdown due to noise coupling or leakage, violating the "must not be floating" requirement stated in the Pin Descriptions section.
Is AP7315Q-12W5-7 compatible with ceramic output capacitors smaller than 0.47µF?
The datasheet specifies 0.47µF as the recommended minimum ceramic output capacitance for stability and transient response. Using smaller values risks oscillation or excessive output voltage deviation during load steps, as confirmed by ESR vs. output current stability graphs in the Typical Characteristics section.
Does AP7315Q-12W5-7 provide short-circuit protection, and what is the trip threshold?
Yes. When VOUT is shorted to GND, the device limits output current to approximately 55–60mA (typical 60mA), as specified in the Fold-back Short Current parameter. This protects the LDO from thermal damage during sustained fault conditions while maintaining safe junction temperature per its 179°C/W θJA.
AP7315Q-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
AP7315Q-12W5-7 FAQ
1.How can I place an order for AP7315Q-12W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315Q-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 AP7315Q-12W5-7 reliable?
The price and inventory of AP7315Q-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 AP7315Q-12W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315Q-12W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315Q-12W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315Q-12W5-7?
AP7315Q-12W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315Q-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 AP7315Q-12W5-7?
For technical support, including AP7315Q-12W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315Q-12W5-7 requirements.
6.How does Aetrix verify that AP7315Q-12W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315Q-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 AP7315Q-12W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315Q-12W5-7?
All AP7315Q-12W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315Q-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 AP7315Q-12W5-7 part is unused and in its original packaging.
Return procedure for AP7315Q-12W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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