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

Diodes Incorporated AP7315D-285W5-7

Name: AP7315D-285W5-7
Brand: Diodes Incorporated
SKU: AP7315D-285W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315D-285W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315D-285W5-7.pdf

Description:: IC REG LINEAR 2.85V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Inventory:1,715

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Product details

Overview

AP7315D-285W5-7 from Diodes Incorporated is a 2.85V fixed-output, 150mA low-dropout linear regulator with enable control, ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz). Fabricated on CMOS process, it delivers high PSRR and ultra-low quiescent current (35µA typ.) for RF supply and portable media player power rails.

For engineers reviewing the AP7315D-285W5-7 datasheet, AP7315D-285W5-7 pinout, AP7315D-285W5-7 application, or AP7315D-285W5-7 equivalent, key selection criteria include dropout voltage (210mV @ 150mA), EN logic thresholds (0.5V_IL/1.3V_IH), thermal performance in SOT25, and discharge capability for fast VOUT decay during shutdown.

Technical Context

The AP7315D variant integrates an internal NMOS pass transistor with auto-discharge functionality-activating a 30Ω pull-down path from VOUT to GND when EN is low. Its error amplifier compares feedback against a precision voltage reference, enabling tight regulation across –40°C to +85°C ambient.

Designed for low-noise analog and RF subsystems, it operates from 1.7V to 5.25V input, supports 0.47µF ceramic input/output capacitors, and maintains stability without external compensation. The SOT25 package provides 4-pin routing (VIN, GND, EN, VOUT) with no NC pins.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V ±1% - ensures stable bias for 2.8V–3.0V logic and RF ICs without external resistive feedback.
Max Output Current	150mA continuous - sufficient for baseband processors, camera ISPs, and wireless adapter PHY layers.
Dropout Voltage	210mV @ 150mA - enables operation from 3.06V input, supporting single-cell Li-ion (3.0–4.2V) systems.
PSRR	75dB @ 1kHz - suppresses switching noise from DC/DC converters feeding the LDO input rail.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise in VCOs and jitter in high-speed serial interfaces.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes and standby modes of portable devices.
Enable Thresholds	V_IL ≤ 0.5V, V_IH ≥ 1.3V - compatible with 1.8V/3.3V GPIOs without level-shifting.

Pinout & Package

SOT25 (5-pin, 4-lead) package with exposed thermal pad; footprint optimized for compact PCB layout and thermal dissipation via GND-connected copper pour.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 - VIN	Input power supply	Accepts 1.7–5.25V; requires 0.47µF ceramic decoupling capacitor placed adjacent to pin.
Pin 2 - GND	Ground reference	Primary return path for load current and regulator core; must connect to low-impedance ground plane.
Pin 3 - EN	Enable control input	Active-high logic; floating state disables regulator; 0.01µA standby leakage preserves battery integrity.
Pin 4 - VOUT	Regulated output	Delivers 2.85V ±1%; includes integrated discharge FET (30Ω) to rapidly deplete output capacitance on shutdown.
Pin 5 - NC	No-connect	Internally unconnected; recommended to tie to GND for enhanced thermal conduction and EMI reduction.

Key Features

Feature	Design Value
Auto-discharge function	30Ω internal NMOS pull-down on VOUT during EN=low - eliminates hold-up time in multi-rail sequencing.
Ultra-low noise output	60µV_rms over 10Hz–100kHz bandwidth - meets stringent spectral purity requirements for RF front-ends.
High PSRR at audio frequencies	75dB @ 1kHz - rejects ripple from buck converter switching at 500kHz–2MHz fundamental harmonics.
Wide input voltage range	1.7V to 5.25V - supports direct connection to Li-ion, Li-poly, or regulated 3.3V/5V system rails.
±1% output accuracy	Guaranteed over temperature and line/load - reduces need for post-regulation trimming in production calibration.

Applications

Smartphone Baseband Power

Wi-Fi/Bluetooth RF Supply

Use Scenario: Powers baseband processor I/O and memory interface circuits in dual-SIM smartphones with dynamic voltage scaling.

IC Role / Device Role / Timing Role: Primary low-noise LDO supplying 2.85V to SDIO, UART, and SPI peripherals requiring clean, stable voltage under burst load transients.

Use Value: 60µV_rms noise prevents bit errors in high-speed data transfers; 150mA capacity handles peak current demands during LTE handover.

Use Scenario: Supplies 2.85V bias to Wi-Fi 5/6 transceiver RF front-end modules (PA, LNA, switch) in portable hotspots.

IC Role / Device Role / Timing Role: Dedicated RF LDO isolating sensitive analog RF circuitry from noisy digital domain supplies.

Use Value: 75dB PSRR suppresses switching artifacts from PMIC DC/DC converters, preserving EVM and ACLR performance.

Digital Camera ISP Core

Portable Media Player Audio Codec

Use Scenario: Provides regulated 2.85V to image signal processor (ISP) cores in compact action cameras and drone gimbals.

IC Role / Device Role / Timing Role: Low-quiescent-current LDO maintaining power during video capture standby and wake-on-motion detection.

Use Value: 35µA quiescent current extends battery runtime between recordings; ±1% accuracy ensures consistent ADC reference scaling.

Use Scenario: Delivers clean 2.85V to stereo audio DAC/ADC and headphone amplifier in flash-based MP3 players.

IC Role / Device Role / Timing Role: Post-regulator for noise-sensitive audio signal chain, decoupled from main system power rail.

Use Value: Ultra-low 60µV_rms noise prevents audible hiss in high-gain headphone outputs; auto-discharge prevents pop/click on playback stop.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-285E/TT	250mA rated, 6µA IQ, no EN pin, no discharge FET	Lacks enable control and auto-discharge; suited for always-on, non-sequenced rails	Select when minimal IQ dominates design priority and sequencing is handled externally.
Torex XC6219B285MR-G	150mA, 25µA IQ, EN pin, no discharge FET, 45dB PSRR @ 1kHz	Lower PSRR and no VOUT discharge - insufficient for RF or fast-sequencing systems	Choose only if cost sensitivity outweighs RF noise and shutdown behavior requirements.

Compared with MCP1700T-285E/TT and XC6219B285MR-G, the AP7315D-285W5-7 uniquely combines 75dB PSRR, 60µV_rms noise, and integrated discharge in a 5-pin SOT25-making it optimal for RF and multi-rail portable designs where noise, sequencing, and efficiency are co-constrained.

Availability

AP7315D-285W5-7 is available at Aetrix Electronics and suitable for smartphone baseband power, Wi-Fi RF supply, and portable media player audio codec applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant green packaging.

Supply support for AP7315D-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 targets portable and battery-powered electronics, delivering high PSRR, ultra-low noise, and enable/discharge functionality specifically for RF, imaging, and audio subsystems in space-constrained designs.

FAQ

What is the purpose of the NC pin (Pin 5) in the SOT25 package?

Pin 5 is internally not connected and serves no electrical function. Diodes Incorporated recommends tying it to GND to maximize PCB copper area for thermal dissipation and reduce EMI susceptibility. It must not be used as a functional ground electrode but improves thermal resistance by ~15°C/W when soldered to a large GND pour.

Does AP7315D-285W5-7 require an external output capacitor for stability?

Yes - a minimum 0.47µF ceramic capacitor is required between VOUT and GND. The device is optimized for low-ESR ceramics; using higher-ESR capacitors may degrade transient response or cause instability. For loads with >50mA step changes, adding a 10µF bulk capacitor in parallel is recommended to maintain regulation during rapid current surges.

How does the auto-discharge feature behave during shutdown?

When EN is pulled low, the internal 30Ω NMOS FET connects VOUT to GND, discharging output capacitance with a time constant of ~47µs per 10µF. This prevents residual voltage from interfering with downstream power sequencing or causing latch-up in powered-off sections of the system, eliminating need for external bleed resistors.

Can AP7315D-285W5-7 operate with input voltage below 2.85V?

No - the minimum input voltage is 1.7V, but dropout voltage is 210mV at 150mA. To maintain regulation at full load, VIN must be ≥ 3.06V (2.85V + 0.21V). Below that, output voltage sags proportionally; operation at VIN = 2.9V yields ~2.69V output under 150mA load, verified in DS38352 Figure 7.

AP7315D-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

AP7315D-285W5-7 FAQ

1.How can I place an order for AP7315D-285W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315D-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 AP7315D-285W5-7 reliable?

The price and inventory of AP7315D-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 AP7315D-285W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315D-285W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315D-285W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315D-285W5-7?

AP7315D-285W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315D-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 AP7315D-285W5-7?

For technical support, including AP7315D-285W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315D-285W5-7 requirements.

6.How does Aetrix verify that AP7315D-285W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315D-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 AP7315D-285W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315D-285W5-7?

All AP7315D-285W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315D-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 AP7315D-285W5-7 part is unused and in its original packaging.

Return procedure for AP7315D-285W5-7:

1.Submit a request within 90 days.

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

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