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

Diodes Incorporated AP7315D-22W5-7

Name: AP7315D-22W5-7
Brand: Diodes Incorporated
SKU: AP7315D-22W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315D-22W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315D-22W5-7.pdf

Description:: IC REG LINEAR 2.2V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Inventory:3,298

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Product details

Overview

AP7315D-22W5-7 from Diodes Incorporated is a 2.2V 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). It operates from 1.7V to 5.25V input and delivers ultra-low quiescent current (35µA typ) for RF supply and portable media applications.

For engineers reviewing the AP7315D-22W5-7 datasheet, AP7315D-22W5-7 pinout, AP7315D-22W5-7 application, or AP7315D-22W5-7 equivalent, this page provides verified technical context, package-specific pin functions, real-world use cases, and validated alternative options for low-noise, high-PSRR LDO selection in space-constrained handheld systems.

Technical Context

The AP7315D-22W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active discharge path activated during shutdown. Its architecture enables fast load transient response (<100µs settling) and stable operation with 0.47µF ceramic input/output capacitors.

This variant includes an internal NMOS discharge switch (R_ON = 30Ω typ) that actively pulls VOUT to GND when EN is low, preventing residual voltage hold-up in battery-powered systems. The SOT25 package supports thermal dissipation up to 400mW under JEDEC High-K board conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.2V ±1% - ensures stable biasing for 2.2V-core logic or RF ICs without external feedback network.
Max Output Current	150mA - sufficient to power single-band RF transceivers or camera sensor interfaces.
PSRR	75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters in mixed-signal PCBs.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase jitter in clock-sensitive analog circuits like ADCs or PLLs.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes or standby-mode peripherals.
Dropout Voltage	280mV at 150mA (for VOUT = 2.2V) - enables operation down to 2.48V input, compatible with single-cell Li-ion (2.7–4.2V) or 3.3V rail derating.
Enable Threshold	V_EN(H) ≥ 1.3V, V_EN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO without level-shifting.

Pinout & Package

SOT25 (5-pin) package with exposed thermal pad; footprint optimized for compact layout and thermal performance on 2-layer boards.

Pin/Terminal	Circuit Role	Design Meaning
1 – VIN	Input power supply	Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance.
2 – GND	Ground reference	Primary return path for input/output currents; must connect directly to low-impedance ground plane.
3 – EN	Enable control input	Active-high logic interface; floating state disables regulator; internal pull-down not provided.
4 – NC	No-connect terminal	Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding.
5 – VOUT	Regulated output	Delivers 2.2V ±1%; requires 0.47µF ceramic capacitor placed within 2mm of pin for stability.

Key Features

Feature	Design Value
Active discharge function	30Ω NMOS switch discharges VOUT to GND in <100µs upon disable, eliminating hold-up voltage in battery-backed systems.
Ultra-low noise output	60µV_rms over 10Hz–100kHz band - critical for powering RF front-end LNAs and high-resolution audio DACs.
High PSRR across frequency	75dB at 1kHz, >50dB up to 1MHz - maintains clean supply rails despite noisy DC/DC switching artifacts.
Low dropout at full load	280mV @ 150mA - supports operation from partially discharged batteries or tightly regulated intermediate rails.
Thermal-enhanced SOT25	Exposed thermal pad improves θ_JA by ~25°C/W vs standard SOT23 - enables sustained 150mA output at +85°C ambient.

Applications

RF Power Amplifier Bias

Camera Sensor Core Supply

Use Scenario: Providing clean, stable 2.2V bias to GaAs pHEMT power amplifiers in 4G/LTE front-end modules.

IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated V_CC to PA drain, rejecting switching noise from PMIC buck converters.

Use Value: 60µV_rms noise prevents AM-to-PM distortion; 75dB PSRR isolates PA gain flatness from 2MHz–5MHz ripple.

Use Scenario: Supplying image sensor core logic (e.g., Sony IMX series) requiring precise 2.2V with minimal supply-induced fixed-pattern noise.

IC Role / Device Role / Timing Role: Primary voltage regulator for sensor digital core and analog pixel array, synchronized to frame timing.

Use Value: ±1% accuracy ensures consistent ADC reference scaling; 35µA quiescent current reduces dark-frame leakage in standby mode.

Wireless Adapter SoC I/O Rail

Portable Media Player Audio Codec

Use Scenario: Powering USB-C/PCIe interface I/O banks in Wi-Fi 6/BT 5.0 adapters where rail integrity affects signal integrity.

IC Role / Device Role / Timing Role: Dedicated LDO for high-speed interface supply, decoupled from noisy system rail.

Use Value: Fast transient response (<100µs) maintains V_I/O during PCIe link training bursts; 280mV dropout allows use with 2.5V intermediate rail.

Use Scenario: Delivering ultra-clean 2.2V to stereo audio codec (e.g., AK4490EQ) in portable players with shared battery supply.

IC Role / Device Role / Timing Role: Post-regulator for DAC analog section, isolated from digital switching noise.

Use Value: 60µV_rms noise contributes <0.0005% THD+N; active discharge prevents pop/click during playback start/stop transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-2202E/TO	2.2V fixed, 250mA, 6µA IQ, no enable or discharge; TO-92 package.	Lacks EN control and active discharge; unsuitable for sequenced power-down or battery hold-up mitigation.	Select only for cost-sensitive, non-sequenced, low-current (<100mA) applications where footprint and enable are not required.
Torex XC6210B222MR-G	2.2V fixed, 150mA, 35µA IQ, 70dB PSRR @1kHz, no discharge; SOT25-compatible but no NC pin.	Matches key specs but omits discharge function; requires external discharge circuit for hold-up control.	Choose when board area permits discrete discharge FET and PSRR/noise requirements are slightly relaxed.

Compared with MCP1700-2202E/TO and XC6210B222MR-G, the AP7315D-22W5-7 uniquely combines 2.2V precision regulation, integrated discharge, SOT25 thermal capability, and industry-leading 75dB PSRR-making it optimal for RF and imaging subsystems demanding both noise immunity and controlled power sequencing.

Availability

AP7315D-22W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core 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-22W5-7 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 product line targets portable and battery-powered electronics, delivering high-PSRR, low-noise LDOs with integrated features like enable and active discharge to simplify power architecture in space-constrained designs.

FAQ

What is the purpose of the NC pin on the SOT25 package?

The NC (No Connect) pin on AP7315D-22W5-7's SOT25 package is internally unconnected but thermally tied to the die substrate. Diodes Incorporated recommends connecting it to GND to improve thermal dissipation and reduce EMI coupling. It must never be used as a functional ground node or left floating in production layouts.

Does the AP7315D-22W5-7 require an external discharge resistor?

No. Unlike non-D variants, the AP7315D-22W5-7 integrates an NMOS discharge switch (R_ON ≈ 30Ω) between VOUT and GND, activated automatically when EN is pulled low. This eliminates need for external components while achieving <100µs VOUT discharge time-critical for battery safety and system reset reliability.

Can AP7315D-22W5-7 operate with a 0.22µF output capacitor?

No. The datasheet specifies minimum 0.47µF ceramic output capacitance for stability across temperature and load. Using 0.22µF risks oscillation or poor transient response, especially above 50mA load. The ESR vs. I_OUT graph confirms stable operation only within hatched region for ≥0.47µF at 150mA.

How does the AP7315D-22W5-7 behave during input undervoltage?

When VIN drops below the minimum operating voltage (1.7V), the AP7315D-22W5-7 enters dropout mode and maintains regulation until VIN falls to (VOUT + dropout voltage). Below 1.7V, output collapses non-monotonically; no UVLO circuit is integrated, so external monitoring is required for brown-out detection in critical systems.

AP7315D-22W5-7 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):: 2.2V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.38V @ 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-22W5-7 FAQ

1.How can I place an order for AP7315D-22W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315D-22W5-7 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-22W5-7 reliable?

The price and inventory of AP7315D-22W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315D-22W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315D-22W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315D-22W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315D-22W5-7?

AP7315D-22W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315D-22W5-7 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-22W5-7?

For technical support, including AP7315D-22W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315D-22W5-7 requirements.

6.How does Aetrix verify that AP7315D-22W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315D-22W5-7 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-22W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315D-22W5-7?

All AP7315D-22W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315D-22W5-7, 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-22W5-7 part is unused and in its original packaging.

Return procedure for AP7315D-22W5-7:

1.Submit a request within 90 days.

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

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