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Diodes Incorporated AP7315-15W5-7
- Part No.:
- AP7315-15W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7315-15W5-7.pdf
- Description:
- IC REG LINEAR 1.5V 150MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
AP7315-15W5-7 from Diodes Incorporated is a 150mA, 1.5V fixed-output low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in portable wireless communication devices using SOT25 packaging.
For engineers reviewing the AP7315-15W5-7 datasheet, AP7315-15W5-7 pinout, AP7315-15W5-7 application, or AP7315-15W5-7 equivalent, this page delivers verified technical context, package-specific pin mapping, real-world use cases in RF and camera power domains, and validated alternative options with functional distinctions.
Technical Context
The AP7315-15W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and enable control logic. Its architecture supports fast line/load transient response and stable operation with 0.47µF ceramic input/output capacitors.
It operates across 1.7V–5.25V input range, delivers regulated 1.5V output up to 150mA, and features shutdown via EN pin (logic-high enable, logic-low disable). Dropout voltage is 0.38V (typ) at 150mA, enabling efficient operation in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% - ensures stable biasing for 1.5V-tolerant RF ICs and baseband processors without external feedback. |
| Max Output Current | 150mA - sufficient to power single-band RF transceivers or low-power camera sensor interfaces. |
| PSRR | 75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy system rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase noise degradation in VCO/PLL supply paths. |
| Quiescent Current | 35µA (typ) - extends battery life in always-on standby modes of portable media players and wireless adapters. |
| Dropout Voltage | 0.38V (typ) at 150mA - enables regulation from 1.88V input, compatible with single-cell Li-ion (3.0–4.2V) via intermediate buck stage. |
| Enable Threshold | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm) package with exposed thermal pad (not electrically connected); optimized for compact PCB layout and thermal dissipation in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – VIN | Input power supply | Accepts 1.7–5.25V; requires 0.47µF ceramic decoupling capacitor placed adjacent to pin for stability. |
| 2 – GND | Ground reference | Primary return path for input/output currents; must connect to low-impedance ground plane to minimize noise coupling. |
| 3 – EN | Enable control input | Active-high logic input; floating state is undefined - tie to VIN if always-on operation is required. |
| 4 – NC | No-connect terminal | Internally unconnected; recommended to tie to GND to maximize copper area for thermal conduction. |
| 5 – VOUT | Regulated output | Delivers 1.5V ±1% to load; requires 0.47µF ceramic capacitor placed within 2mm of pin for optimal transient response. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz - maintains clean 1.5V rail despite ripple on shared 3.3V system bus. |
| Ultra-low noise | 60µVrms (10Hz–100kHz) - prevents SNR degradation in analog front-end circuits like camera ISPs. |
| Low quiescent current | 35µA (typ) - reduces no-load power loss by >60% vs. legacy LDOs in sleep-state applications. |
| Wide input range | 1.7V–5.25V - supports direct connection to single-cell Li-ion, USB VBUS, or post-buck intermediate rails. |
| Thermal-enhanced SOT25 | Exposed thermal pad - enables 2× higher power dissipation than standard SOT23, critical for sustained 150mA loads. |
Applications
| RF Power Amplifier Bias | Camera Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise 1.5V bias to GaAs pHEMT power amplifiers in 2.4GHz Wi-Fi modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable VPA supply independent of noisy switcher outputs. Use Value: Reduces AM-to-PM distortion and improves EVM by suppressing 100kHz–1MHz switching artifacts from PMIC rails. |
Use Scenario: Powering the digital core of 8MP CMOS image sensors in smartphones during preview mode. IC Role / Device Role / Timing Role: Fixed-output LDO supplying regulated 1.5V to sensor logic and ADC interface. Use Value: Enables sub-10mV output deviation under 100mA load steps, preventing frame sync errors or data corruption. |
| Wireless Adapter Baseband | Portable Media Player Audio Codec |
|
Use Scenario: Delivering 1.5V to Bluetooth baseband processors in USB dongles with minimal board space. IC Role / Device Role / Timing Role: Enable-controlled LDO supporting rapid power cycling between active and deep-sleep states. Use Value: Achieves <1µA shutdown current and <10µs wake-up time, meeting Bluetooth LE duty-cycle requirements. |
Use Scenario: Supplying 1.5V to stereo audio DACs and headphone amplifiers in flash-based MP3 players. IC Role / Device Role / Timing Role: Low-PSRR LDO isolating analog audio stages from digital switching noise. Use Value: Maintains THD+N < -95dB by rejecting 10kHz–100kHz ripple from display backlight drivers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-1502E/TO | 150mA, 1.5V, 6µA IQ, but only 60dB PSRR at 1kHz and 120µVrms noise | Better for ultra-low-power always-on sensors; insufficient for RF supply where PSRR/noise are critical | Choose when quiescent current dominates over noise performance and RF coexistence is not required. |
| Torex XC6206P152MR-G | 150mA, 1.5V, 70dB PSRR at 1kHz, 45µVrms noise, but 50µA IQ and no enable pin | Lacks EN control - unsuitable for dynamic power gating in portable devices with multi-state operation | Prefer when fixed-on operation is acceptable and lowest possible noise is prioritized over enable functionality. |
Compared with MCP1700-1502E/TO and XC6206P152MR-G, the AP7315-15W5-7 uniquely balances ultra-low noise, high PSRR, enable control, and industry-standard SOT25 footprint - making it optimal for RF and imaging subsystems requiring both precision regulation and dynamic power management.
Availability
AP7315-15W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, and wireless adapter baseband applications requiring stable component supply, consistent parametric performance across temperature, and long-term production continuity.
Supply support for AP7315-15W5-7 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 consumer, industrial, and automotive markets.
The AP7315 series belongs to Diodes' precision LDO portfolio, engineered specifically for noise-sensitive portable electronics where small size, low IQ, and high PSRR are mandatory for RF and imaging subsystems.
FAQ
What is the maximum input voltage for AP7315-15W5-7?
The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Operation above 5.25V risks permanent damage, while below 1.7V fails to maintain regulation at 150mA due to dropout constraints. For 1.5V output, minimum functional VIN is 1.88V (1.5V + 0.38V typical dropout).
Does AP7315-15W5-7 include output discharge functionality?
No - AP7315-15W5-7 is the non-discharge variant. It lacks an internal pull-down transistor on VOUT; therefore, the output voltage decays only through the load and external circuitry after shutdown. The discharge version is designated AP7315D-15W5-7 and adds ~30Ω on-resistance between VOUT and GND when disabled.
Can AP7315-15W5-7 be used with ceramic output capacitors smaller than 0.47µF?
No - the datasheet specifies 0.47µF as the minimum stable ceramic output capacitance. Using smaller values (e.g., 0.22µF) risks instability and oscillation under load transients, as confirmed by ESR vs. output current stability graphs in DS38352 Rev. 2–2, page 11.
Is the NC pin on AP7315-15W5-7 required to be grounded?
The NC pin (Pin 4) is not internally connected, but Diodes recommends tying it to GND to maximize PCB copper area for thermal conduction from the exposed thermal pad. Leaving it floating reduces thermal performance and may compromise reliability under sustained 150mA loads.
AP7315-15W5-7 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
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
AP7315-15W5-7 FAQ
1.How can I place an order for AP7315-15W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7315-15W5-7 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 AP7315-15W5-7 reliable?
The price and inventory of AP7315-15W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-15W5-7 is usually 5 days.
3.What payment methods are accepted for AP7315-15W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-15W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7315-15W5-7?
AP7315-15W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7315-15W5-7 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 AP7315-15W5-7?
For technical support, including AP7315-15W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-15W5-7 requirements.
6.How does Aetrix verify that AP7315-15W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7315-15W5-7 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 AP7315-15W5-7 meets industry standards.
7.What is the process for return or replacement of AP7315-15W5-7?
All AP7315-15W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-15W5-7, 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 AP7315-15W5-7 part is unused and in its original packaging.
Return procedure for AP7315-15W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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