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Diodes Incorporated AP7315-295SR-7
- Part No.:
- AP7315-295SR-7
- Manufacturer:
- Diodes Incorporated
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
AP7315-295SR-7.pdf
- Description:
- IC REG LINEAR 2.95V 150MA SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:1,015
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Product details
Overview
AP7315-295SR-7 from Diodes Incorporated is a 150mA, 2.95V fixed-output low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current. It features CMOS-based architecture, enable control, and is optimized for RF supply rails in space-constrained portable electronics.
For engineers reviewing the AP7315-295SR-7 datasheet, AP7315-295SR-7 pinout, AP7315-295SR-7 application, or AP7315-295SR-7 equivalent, key selection criteria include dropout voltage at 150mA (210mV typical for 2.95V version), thermal performance in SOT23-3, EN logic thresholds (0.5VIL/1.3VIH), and stability with 0.47µF ceramic output capacitance.
Technical Context
The AP7315-295SR-7 implements a CMOS-based LDO architecture with integrated voltage reference, error amplifier, current-limit circuitry, and active enable input. Its low RDS(ON) MOSFET enables high PSRR and low dropout across its 1.7V–5.25V input range.
It delivers regulated 2.95V output with ±1% accuracy over temperature (−40°C to +85°C) and load (0–150mA), while maintaining 60µVrms noise and 75dB ripple rejection at 1kHz - critical for noise-sensitive RF and camera power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.95V ±1% - ensures stable bias for 3.0V-tolerant RF ICs without external feedback network. |
| Max Output Current | 150mA - sufficient for powering single-band RF transceivers or image sensor analog blocks. |
| Dropout Voltage | 210mV typical at 150mA - enables operation from 3.16V input (e.g., single-cell Li-ion post-LDO), minimizing power loss. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy system rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets stringent spectral purity requirements for RF front-end and ADC reference supplies. |
| Quiescent Current | 35µA typical - extends battery life in always-on sensor or standby communication modules. |
| Enable Thresholds | VIL ≤ 0.5V, VIH ≥ 1.3V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7315-295SR-7 is housed in the SOT23-3 (SR) package - a 2.9mm × 1.3mm × 1.0mm surface-mount outline with gull-wing leads, optimized for high-density PCB layouts in portable devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Primary return path for output current; must connect to low-impedance ground plane to maintain PSRR and thermal stability. |
| 2 (VOUT) | Regulated output | Delivers 2.95V ±1% to load; requires 0.47µF ceramic capacitor placed within 2mm for transient response and stability. |
| 3 (VIN) | Input supply | Accepts 1.7V–5.25V; needs local 0.47µF decoupling capacitor adjacent to pin to suppress input rail noise and glitches. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR (75dB @ 1kHz) | Enables clean power delivery in mixed-signal systems where DC/DC converters inject ripple into shared input rails. |
| Low 60µVrms noise | Preserves signal integrity in RF synthesizers and high-resolution camera sensor analog chains without additional filtering. |
| 35µA quiescent current | Reduces no-load power draw in battery-powered IoT nodes, extending shelf life and operational runtime. |
| ±1% output accuracy | Eliminates need for post-regulation trimming in production, supporting consistent RF gain and ADC reference performance. |
| Enable control (EN pin) | Allows precise power sequencing and dynamic shutdown of peripheral rails - e.g., disabling camera ISP during sleep mode. |
Applications
| RF Power Amplifier Bias | CMOS Image Sensor Analog Supply |
|---|---|
|
Use Scenario: Providing stable 2.95V bias to GaAs pHEMT or SiGe HBT power amplifiers in 4G/5G mobile front-ends. IC Role / Device Role / Timing Role: Low-noise, high-PSRR LDO delivering clean DC bias independent of noisy system PMIC outputs. Use Value: Prevents AM-to-PM distortion and EVM degradation by suppressing 1–10MHz switching noise from adjacent buck converters. |
Use Scenario: Powering analog pixel array and column ADC circuitry in smartphone main cameras. IC Role / Device Role / Timing Role: Precision voltage source ensuring consistent pixel response and reduced fixed-pattern noise. Use Value: Maintains <±1% output regulation across temperature and load, directly improving SNR and dynamic range. |
| Wireless Adapter Core Logic | Portable Media Player Audio Codec |
|
Use Scenario: Supplying 2.95V core voltage to Bluetooth/Wi-Fi SoC subsystems during active data transfer. IC Role / Device Role / Timing Role: Enable-controlled LDO enabling fast on/off cycling synchronized with packet transmission windows. Use Value: Achieves 35µA shutdown current and 150mA peak delivery, balancing responsiveness and ultra-low idle power. |
Use Scenario: Delivering low-noise 2.95V to stereo audio DAC and headphone amplifier stages in DAPs. IC Role / Device Role / Timing Role: Ultra-low-noise regulator minimizing audible hiss and intermodulation distortion in analog audio paths. Use Value: 60µVrms noise floor ensures >105dB SNR, meeting Hi-Res Audio certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7315-295SA-7 | Same electrical specs; uses SOT23-3 (SA) package with different pin numbering (VIN/GND/VOUT vs. GND/VOUT/VIN). | Identical functional use but requires PCB layout revision due to reversed VIN/VOUT pin positions. | Select SA variant only when redesigning board layout to match its pinout; SR is drop-in replacement for existing SOT23-3 footprints labeled "SR". |
| MCP1700-295TOE/TO | 100mA max output, 6µA quiescent current, 2% output accuracy, 65dB PSRR - lower performance in noise, PSRR, and current capability. | Suitable for low-power microcontrollers but inadequate for RF or imaging loads demanding 150mA and 60µVrms. | Choose only for cost-sensitive, non-noise-critical applications where 100mA and ±2% tolerance are acceptable. |
Compared with AP7315-295SA-7, the SR variant offers identical regulation performance but matches legacy SOT23-3 footprint assignments used in Diodes' prior designs; versus MCP1700-295, it delivers 50% higher current, 10× lower noise, and tighter accuracy - essential for RF and imaging subsystems.
Availability
AP7315-295SR-7 is available at Aetrix Electronics and suitable for RF power amplifiers, CMOS image sensors, wireless adapter core logic, and portable media player audio codecs requiring stable component supply, long-term manufacturability, and AEC-Q200-compatible variants upon request.
Supply support for AP7315-295SR-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 solutions, with design centers in Asia, Europe, and the US, and manufacturing in IATF 16949-certified facilities.
The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-sensitive portable and wireless applications including smartphones, tablets, and IoT edge devices.
FAQ
What is the minimum input voltage required for AP7315-295SR-7 to regulate 2.95V at 150mA?
The minimum input voltage is determined by dropout: 2.95V + 210mV = 3.16V. Per datasheet specifications, the device maintains regulation down to 1.7V input, but full 150mA output at 2.95V requires VIN ≥ 3.16V. At lower inputs, output current capability degrades progressively.
Can AP7315-295SR-7 be used without an enable signal?
Yes - tie the EN pin directly to VIN to maintain permanent operation. The EN pin must never float; leaving it unconnected risks erratic startup or unintended shutdown due to noise coupling. No pull-up resistor is needed since VIN provides valid high-level drive.
Is a bypass capacitor required on the VOUT pin, and what value is recommended?
A 0.47µF X5R/X7R ceramic capacitor is mandatory and must be placed within 2mm of the VOUT and GND pins. This capacitor ensures stability, improves load-transient response, and reduces output impedance. Larger values (e.g., 2.2µF) may be added in parallel for enhanced low-frequency ripple suppression.
Does AP7315-295SR-7 include short-circuit protection?
Yes - internal fold-back current limiting activates when VOUT shorts to GND, clamping output current to approximately 55–60mA. This protects the device from thermal damage during fault conditions and allows safe recovery once the short is removed, without requiring external current-sense circuitry.
AP7315-295SR-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- 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):
- 2.95V
- 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:
- -
- Protection Features:
- Over Current
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
AP7315-295SR-7 FAQ
1.How can I place an order for AP7315-295SR-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-295SR-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 AP7315-295SR-7 reliable?
The price and inventory of AP7315-295SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-295SR-7 is usually 5 days.
3.What payment methods are accepted for AP7315-295SR-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-295SR-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-295SR-7?
AP7315-295SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-295SR-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 AP7315-295SR-7?
For technical support, including AP7315-295SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-295SR-7 requirements.
6.How does Aetrix verify that AP7315-295SR-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-295SR-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 AP7315-295SR-7 meets industry standards.
7.What is the process for return or replacement of AP7315-295SR-7?
All AP7315-295SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-295SR-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 AP7315-295SR-7 part is unused and in its original packaging.
Return procedure for AP7315-295SR-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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