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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7315-285W5-7

Name: AP7315-285W5-7
Brand: Diodes Incorporated
SKU: AP7315-285W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-285W5-7

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: SC-74A, SOT-753

Datasheet:: AP7315-285W5-7.pdf

Description:: IC REG LINEAR 2.85V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7315-285W5-7 from Diodes Incorporated is a 2.85V fixed-output, 150mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in compact portable electronics.

For engineers reviewing the AP7315-285W5-7 datasheet, AP7315-285W5-7 pinout, AP7315-285W5-7 application, or AP7315-285W5-7 equivalent, this page delivers verified package mapping (SOT25), terminal functions, real-world load transient behavior, thermal layout guidance, and validated alternative options for low-noise biasing of RF power amplifiers and camera sensor modules.

Technical Context

The AP7315-285W5-7 implements a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit protection. Its enable input (EN) provides precise on/off control with defined logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.3V), and it operates across 1.7V–5.25V input range while maintaining regulation down to 210mV dropout at 150mA for 2.85V output.

It features non-discharge functionality (no internal output discharge path), requires only 0.47µF ceramic input/output capacitors, and achieves stable operation with ESR as low as 10mΩ - enabling use in space-constrained RF front-end and image sensor power domains where low noise and fast load step response are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V ±1% - ensures stable bias for 2.8V nominal RF PA stages without external feedback network.
Max Output Current	150mA continuous - sufficient for dual-band RF transceivers and high-resolution camera ISPs.
PSRR	75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy system rails.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise degradation in local oscillator and RF receiver chains.
Quiescent Current	35µA typical - enables always-on biasing in battery-powered devices with multi-day standby life.
Dropout Voltage	210mV at 150mA - allows operation from single-cell Li-ion (3.0V min) or boosted 3.3V rails with margin.
Input Voltage Range	1.7V to 5.25V - supports direct connection to main system rail or intermediate buck converter outputs.

Pinout & Package

SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm) package with exposed thermal pad (not electrically connected); optimized for thermal dissipation in dense PCB layouts. Pin 4 is NC (No Connect) and recommended tied to GND for improved thermal conduction.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 - VIN	Power Input	Main supply input; requires 0.47µF ceramic capacitor placed within 2mm for stability and noise rejection.
Pin 2 - GND	Ground Reference	Primary ground return; must connect directly to low-impedance ground plane to minimize noise coupling.
Pin 3 - EN	Enable Control	Active-high digital enable; must be driven to ≥1.3V to activate regulator, ≤0.5V to enter shutdown (I_STANDBY ≤ 1.0µA).
Pin 4 - NC	No Connect	Internally unconnected; tie to GND to maximize copper area for thermal relief and EMI reduction.
Pin 5 - VOUT	Regulated Output	2.85V output; place 0.47µF ceramic capacitor adjacent to pin with short, wide traces to maintain PSRR and transient response.

Key Features

Feature	Design Value
High PSRR	75dB @ 1kHz - maintains clean output under ripple from switching regulators powering baseband ICs.
Ultra-Low Noise	60µV_rms (10Hz–100kHz) - avoids modulation of sensitive analog RF paths in mmWave and 5G front-ends.
Low Quiescent Current	35µA - enables always-on LDO operation in sleep-mode systems without compromising battery runtime.
Wide Input Range	1.7V–5.25V - accommodates varied source rails including Li-ion, USB, and post-buck voltages without redesign.
Thermal Robustness	400mW max power dissipation on JEDEC High-K board - supports sustained 150mA loads in ambient up to +85°C.

Applications

RF Power Amplifier Bias

CMOS Image Sensor Core Supply

Use Scenario: Providing clean, stable 2.85V bias to GaAs or SiGe RF PAs in LTE/5G mobile handsets.

IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated voltage with minimal PSK/QAM constellation distortion.

Use Value: 75dB PSRR prevents switching noise from PMIC DC/DC converters from degrading EVM and ACLR performance.

Use Scenario: Powering analog core circuitry (ADC, PLL, pixel array bias) in high-resolution smartphone cameras.

IC Role / Device Role / Timing Role: Precision voltage source ensuring consistent analog gain, timing jitter, and dark current stability.

Use Value: 60µV_rms noise prevents fixed-pattern noise and SNR degradation in low-light imaging modes.

Wireless Adapter PHY Rail

Portable Media Player Audio Codec

Use Scenario: Supplying 2.85V to WLAN/BT combo chip PHY sections in compact USB dongles and IoT gateways.

IC Role / Device Role / Timing Role: Enable-controlled LDO enabling dynamic power gating during link idle states.

Use Value: 35µA quiescent current and sub-1µA shutdown current extend battery life in intermittent-traffic applications.

Use Scenario: Delivering ultra-low-noise 2.85V to stereo audio DACs and headphone amplifiers in portable media players.

IC Role / Device Role / Timing Role: Analog supply rail decoupling critical for THD+N and channel separation performance.

Use Value: 210mV dropout enables operation from partially discharged 3.0V Li-ion cells while maintaining full audio dynamic range.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7315-285FS4-7B	Same electrical specs, X2-DFN1010-4 (1.0mm × 1.0mm) package - 40% smaller footprint, no NC pin.	Better suited for ultra-dense RF modules where board area is constrained and thermal pad grounding is feasible.	Select when PCB real estate is premium and thermal management via exposed pad is preferred over SOT25's larger body.
MCP1703T-285E/MB	2.85V, 250mA, 6µV_rms noise, but higher 85µA I_Q; SOT23-3 package (no EN pin).	Lacks enable control and has lower PSRR (65dB @ 1kHz); suitable only for always-on, low-current analog rails.	Choose only if enable functionality is unnecessary and lowest possible noise is prioritized over quiescent current and PSRR.

Compared with AP7315-285W5-7, the FS4 variant offers superior miniaturization and thermal performance in RF modules, while the MCP1703 trades enable control and PSRR for ultra-low noise - making the AP7315-285W5-7 optimal for dynamically controlled, noise-sensitive, medium-current applications.

Availability

AP7315-285W5-7 is available at Aetrix Electronics and suitable for RF power amplifier biasing, CMOS image sensor core supplies, wireless adapter PHY rails, and portable media player audio codec power delivery requiring stable component supply across production lifecycles.

Supply support for AP7315-285W5-7 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 for power management, signal integrity, and connectivity applications.

The AP7315 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-critical subsystems in portable communications and imaging equipment where clean, efficient, and controllable biasing is essential.

FAQ

What is the maximum allowable input voltage for AP7315-285W5-7?

The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V may trigger internal protection or degrade long-term reliability. Operation above 5.25V is not guaranteed per datasheet specifications and risks permanent damage.

Can AP7315-285W5-7 be used without connecting the EN pin?

No - the EN pin must not be left floating. To ensure reliable operation, tie EN directly to VIN if enable control is unused. Floating EN causes undefined regulator state and potential oscillation or excessive quiescent current due to internal leakage paths.

Is the NC pin on SOT25 required to be grounded?

The NC pin (Pin 4) is internally unconnected but recommended to be tied to GND. This improves thermal conduction through the PCB copper and reduces EMI susceptibility - it does not affect electrical function but enhances thermal and EMC performance in production layouts.

Does AP7315-285W5-7 include output discharge functionality?

No - AP7315-285W5-7 is the non-discharge version (no "D" suffix). It lacks an internal discharge FET, so VOUT remains active after EN is pulled low until external load discharges the output capacitor. For rapid VOUT decay, select AP7315D-285W5-7 instead.

AP7315-285W5-7 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):: 2.85V

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

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

AP7315-285W5-7 FAQ

1.How can I place an order for AP7315-285W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-285W5-7 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 AP7315-285W5-7 reliable?

The price and inventory of AP7315-285W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-285W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315-285W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-285W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-285W5-7?

AP7315-285W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-285W5-7 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 AP7315-285W5-7?

For technical support, including AP7315-285W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-285W5-7 requirements.

6.How does Aetrix verify that AP7315-285W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-285W5-7 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 AP7315-285W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315-285W5-7?

All AP7315-285W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-285W5-7, 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 AP7315-285W5-7 part is unused and in its original packaging.

Return procedure for AP7315-285W5-7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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