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Diodes Incorporated AP7315DQ-29W5-7
- Part No.:
- AP7315DQ-29W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315DQ-29W5-7.pdf
- Description:
- IC REG LINEAR 2.9V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7315DQ-29W5-7 from Diodes Incorporated is an automotive-grade 150mA low-dropout linear regulator with fixed 2.9V 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 RF supplies.
For engineers reviewing the AP7315DQ-29W5-7 datasheet, AP7315DQ-29W5-7 pinout, AP7315DQ-29W5-7 application, or AP7315DQ-29W5-7 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 critical for controlled power-down sequencing in automotive ECUs.
Technical Context
The AP7315DQ-29W5-7 uses a CMOS-based LDO architecture with internal N-channel pass transistor and precision bandgap reference. Its enable input (EN) directly controls regulator activation with defined 0–0.5V low and 1.3–5.25V high thresholds, and its integrated discharge path (30Ω typical on-resistance) actively pulls VOUT to GND when disabled.
It achieves stable regulation across 1.7V–5.25V input range while maintaining 2.9V output under 150mA load, with dropout voltage of 0.25V (typ.) at full load. Thermal protection and fold-back short-circuit current limiting (55mA) ensure robust operation in automotive transients and fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9V ±1% - ensures precise biasing for 3.0V-tolerant analog sensors and RF ICs without external feedback. |
| Max Output Current | 150mA continuous - sufficient for powering single-core microcontrollers, CAN transceivers, or image sensor analog front-ends. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters in multi-rail automotive systems. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase jitter in clocked circuits and preserves SNR in audio/RF signal chains. |
| Quiescent Current | 35µA (typ.) - enables always-on monitoring functions in vehicle body control modules with minimal battery drain. |
| Dropout Voltage | 0.25V (typ.) at 150mA - allows operation down to 3.15V input, supporting cold-crank scenarios in 12V automotive systems. |
| Operating Temp | −40°C to +125°C ambient - meets under-hood and cabin ECU thermal requirements per AEC-Q100 Grade 1. |
Pinout & Package
SOT25 (5-pin small-outline transistor) 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 | Main power input; accepts 1.7V–5.25V; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| 2 | GND | Analog/digital ground reference; must connect to low-impedance PCB ground plane to minimize noise coupling. |
| 3 | EN | Active-high enable; logic threshold 1.3V min / 0.5V max; floating prohibited-tie to VIN if always-on operation required. |
| 4 | NC | No internal connection; electrically isolated; must remain unconnected in PCB layout. |
| 5 | VOUT | Regulated 2.9V output; includes integrated discharge FET (30Ω typ.) that sinks current to GND when EN = low. |
Key Features
| Feature | Design Value |
|---|---|
| Automotive Qualification | AEC-Q100 Grade 1 qualified, PPAP-capable, manufactured in IATF 16949-certified facilities-enables direct use in safety-critical ECU designs. |
| Output Discharge | Integrated 30Ω discharge FET activates automatically on disable-eliminates need for external bleed resistor and ensures rapid, controlled VOUT decay. |
| High PSRR & Low Noise | 75dB ripple rejection at 1kHz + 60µVrms noise-preserves signal integrity in RF supply rails for GNSS receivers and cellular modems. |
| Ultra-Low IQ | 35µA quiescent current-extends battery life in always-on telematics and remote keyless entry modules during sleep mode. |
| Wide Input Range | 1.7V–5.25V operation-supports direct connection to 3.3V or 5V system rails and tolerates automotive load-dump transients up to 5.25V. |
Applications
| ADAS Camera Power | Infotainment RF Supply |
|---|---|
|
Use Scenario: Powering analog image sensor and ISP core in forward-facing ADAS cameras mounted behind windshield. IC Role / Device Role / Timing Role: Primary 2.9V LDO supplying clean bias to CIS analog front-end and pixel ADC, synchronized to exposure timing. Use Value: 60µVrms noise prevents fixed-pattern noise in captured images; 75dB PSRR rejects noise from nearby DC/DC converters driving digital logic. |
Use Scenario: Providing stable 2.9V rail to GNSS receiver and Bluetooth/Wi-Fi coexistence module in head-unit infotainment system. IC Role / Device Role / Timing Role: Low-noise local regulator for RF ICs requiring tight voltage tolerance and minimal phase noise contribution. Use Value: ±1% output accuracy maintains RF IC gain linearity; SOT25 footprint enables compact placement near antenna feed points. |
| Body Control Module (BCM) | Telematics Control Unit (TCU) |
|
Use Scenario: Powering door lock actuators, window motor drivers, and LIN transceivers in centralized BCM. IC Role / Device Role / Timing Role: Always-on auxiliary LDO enabling wake-on-LIN functionality with sub-50µA total system standby current. Use Value: 35µA quiescent current reduces parasitic drain; integrated discharge prevents back-powering of downstream logic during deep-sleep transitions. |
Use Scenario: Supplying 2.9V to LTE modem baseband processor and eSIM interface in vehicle telematics gateway. IC Role / Device Role / Timing Role: Enable-controlled LDO sequenced after main 3.3V rail to manage boot order and prevent data corruption during power-up. Use Value: EN pin allows precise firmware-controlled power gating; AEC-Q100 qualification ensures reliability over 15-year vehicle lifecycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315Q-29W5-7 | No output discharge circuit; EN pin functional but VOUT floats on disable. | Suitable where fast VOUT decay is unnecessary and external discharge is acceptable. | Select when cost optimization is prioritized and system-level discharge is already implemented. |
| TLD1120-1EP | 200mA rated, 2.0V dropout at 150mA, no integrated discharge, wider temp range (−40°C to +150°C). | Targeted at LED driver bias rails; lacks automotive-specific qualification documentation. | Choose only if higher current headroom is needed and AEC-Q100 compliance is not mandatory. |
Compared with AP7315Q-29W5-7, the AP7315DQ-29W5-7 adds essential discharge functionality for automotive power sequencing, while TLD1120-1EP trades qualification rigor for marginally higher current capability-neither matches the combined PSRR/noise/qualification profile of the AP7315DQ variant.
Availability
AP7315DQ-29W5-7 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment RF subsystems, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for AP7315DQ-29W5-7 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 AP7315Q series is part of Diodes' automotive-qualified LDO portfolio, designed specifically to meet stringent AEC-Q100 Grade 1 requirements for noise-sensitive, always-on power rails in modern vehicle ECUs.
FAQ
What is the purpose of the NC pin on AP7315DQ-29W5-7?
Pin 4 is designated NC (No Connection) and has no internal electrical connection. It must remain unconnected in the PCB layout-neither tied to GND nor left floating. This pin exists solely for mechanical symmetry and package compatibility within the SOT25 footprint; routing traces or vias to it may compromise thermal performance or cause unintended coupling.
Does AP7315DQ-29W5-7 require an external discharge resistor?
No. The AP7315DQ-29W5-7 integrates an internal N-channel discharge FET (30Ω typical on-resistance) between VOUT and GND, activated automatically when EN is pulled low. This eliminates the need for external bleed resistors, reduces BOM count, and ensures consistent discharge timing across temperature and process variation-critical for deterministic power-down in automotive systems.
Can AP7315DQ-29W5-7 operate with input voltage below 2.9V?
No. With a fixed 2.9V output, the device requires minimum input voltage of 3.15V (2.9V + 0.25V typical dropout) to maintain regulation at 150mA load. At lighter loads, dropout decreases (e.g., ~0.15V at 10mA), allowing operation down to ~3.05V-but sustained sub-3.15V input will cause output collapse. For lower-input applications, consider AP7315DQ-25W5-7 (2.5V output) instead.
How does the AP7315DQ-29W5-7 handle short-circuit events?
When VOUT is shorted to GND, the device activates fold-back current limiting, clamping output current to approximately 55mA. This protects the regulator from thermal runaway and damage while maintaining safe junction temperature. Recovery is automatic upon short removal-no latch or reset required-and the EN pin retains full control over subsequent enable/disable cycles.
AP7315DQ-29W5-7 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):
- 2.9V
- 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
AP7315DQ-29W5-7 FAQ
1.How can I place an order for AP7315DQ-29W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315DQ-29W5-7 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-29W5-7 reliable?
The price and inventory of AP7315DQ-29W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315DQ-29W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315DQ-29W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315DQ-29W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315DQ-29W5-7?
AP7315DQ-29W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315DQ-29W5-7 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-29W5-7?
For technical support, including AP7315DQ-29W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315DQ-29W5-7 requirements.
6.How does Aetrix verify that AP7315DQ-29W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315DQ-29W5-7 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-29W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315DQ-29W5-7?
All AP7315DQ-29W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315DQ-29W5-7, 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-29W5-7 part is unused and in its original packaging.
Return procedure for AP7315DQ-29W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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