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

Diodes Incorporated AP7315-22SA-7

Name: AP7315-22SA-7
Brand: Diodes Incorporated
SKU: AP7315-22SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-22SA-7

Manufacturer:: Diodes Incorporated

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

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: AP7315-22SA-7.pdf

Description:: IC REG LINEAR 2.2V 150MA SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:3,750

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Product details

Overview

AP7315-22SA-7 from Diodes Incorporated is a 2.2V fixed-output, 150mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz), designed for RF supply rails in space-constrained portable devices using the SOT23-3 package.

For engineers reviewing the AP7315-22SA-7 datasheet, AP7315-22SA-7 pinout, AP7315-22SA-7 application, or AP7315-22SA-7 equivalent, key selection criteria include dropout voltage (280mV typ. at 150mA), enable-controlled shutdown (I_STANDBY = 0.01µA), thermal performance in SOT23, and compatibility with 0.47µF ceramic input/output capacitors.

Technical Context

The AP7315-22SA-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active-high enable logic to regulate output from 1.7V–5.25V input while maintaining tight DC accuracy and high-frequency ripple rejection. Its non-discharge architecture avoids output discharge during shutdown.

It operates across –40°C to +85°C ambient, delivers stable 2.2V output with <±30ppm/°C temperature coefficient, and achieves 0.28V typical dropout at 150mA load-enabling use in battery-powered systems where headroom is limited.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.2V ±1% - ensures stable bias for RF ICs without external feedback network
Max Output Current	150mA - sufficient for powering baseband processors or RF front-end modules
PSRR	75dB at 1kHz - suppresses switching noise from PMICs or DC-DC converters feeding the LDO input
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise degradation in VCOs and LNAs
Quiescent Current	35µA typ. - extends battery life in always-on sensor or standby communication circuits
Dropout Voltage	280mV typ. at 150mA - supports operation down to 2.48V input with 2.2V output, critical for single-cell Li-ion systems
Enable Threshold	V_EN(H) ≥1.3V, V_EN(L) ≤0.5V - compatible with 1.8V/3.3V GPIO control without level-shifting

Pinout & Package

AP7315-22SA-7 uses the SOT23-3 (SA) package: 1.7mm × 2.9mm footprint, 1.3mm height, thermally enhanced leadframe with exposed pad not connected internally (recommended tied to GND via PCB copper for thermal relief).

Pin/Terminal	Circuit Role	Design Meaning
VIN (Pin 1)	Input power supply	Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance
GND (Pin 2)	Ground reference	Primary return path for load current and internal bias; must connect directly to low-impedance ground plane
VOUT (Pin 3)	Regulated output	Delivers 2.2V ±1%; output capacitor (0.47µF ceramic) must be placed within 2mm of this pin and GND

Key Features

Feature	Design Value
High PSRR	75dB at 1kHz enables clean power delivery in noisy mixed-signal environments like smartphone transceivers
Ultra-low noise	60µV_rms over 10Hz–100kHz prevents spectral contamination in sensitive analog RF stages
Low quiescent current	35µA operating / 0.01µA shutdown allows >1-year battery life in IoT endpoint sleep modes
Tight output accuracy	±1% over line/load/temperature ensures reliable logic-level compliance for 2.2V I/O domains
Small-footprint packaging	SOT23-3 (2.9mm × 1.7mm) reduces PCB area by >40% vs. standard SOT23-5, easing layout in compact cameras

Applications

RF Power Amplifier Bias

Camera Sensor Core Supply

Use Scenario: Providing stable 2.2V bias to GaAs pHEMT power amplifiers in 4G/5G mobile front-ends.

IC Role / Device Role / Timing Role: Low-noise post-regulator isolating PA from noisy system PMIC rails.

Use Value: 60µV_rms noise prevents AM-to-PM distortion; 75dB PSRR rejects coupled DC-DC switching artifacts.

Use Scenario: Powering image sensor analog core (ADC reference, pixel array bias) in smartphone camera modules.

IC Role / Device Role / Timing Role: Precision voltage source ensuring consistent pixel response and low dark current.

Use Value: ±1% accuracy maintains ADC full-scale linearity; 280mV dropout enables operation from aging Li-ion cells.

Wireless Adapter PHY Supply

Portable Media Player Audio Codec

Use Scenario: Delivering clean 2.2V to Bluetooth/Wi-Fi SoC PHY layers in USB dongles and wearables.

IC Role / Device Role / Timing Role: Local regulation stage decoupling digital SoC noise from RF receiver sensitivity.

Use Value: 35µA quiescent current extends standby time; SOT23-3 footprint fits narrow PCB edges in dongle designs.

Use Scenario: Supplying audio codec analog section (DAC, headphone driver) in flash-based media players.

IC Role / Device Role / Timing Role: Low-noise LDO replacing bulkier solutions to meet THD+N < -90dB requirements.

Use Value: 60µV_rms noise avoids audible hiss; ±1% tolerance guarantees consistent DAC reference scaling.

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	250mA rated, 6µV_rms noise, but only 60dB PSRR at 1kHz and 4.5µA quiescent current	Lacks RF-grade PSRR; better suited for microcontroller I/O rails than RF bias	Select when ultra-low IQ dominates over noise/PSRR; avoid for RF signal chains
Torex XC6206P222MR-G	150mA, ±2% accuracy, 40µV_rms noise, but 65dB PSRR and no enable pin	No shutdown control; looser accuracy limits use in precision ADC references	Choose for cost-sensitive, always-on applications where enable functionality is unnecessary

Compared with MCP1700-2202E/TO and XC6206P222MR-G, AP7315-22SA-7 uniquely balances RF-grade PSRR (75dB), ultra-low noise (60µV_rms), and enable control in the smallest SOT23-3 footprint-making it optimal for space- and performance-constrained RF subsystems.

Availability

AP7315-22SA-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, and wireless adapter PHY supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for AP7315-22SA-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 ICs 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-sensitive RF and imaging subsystems in portable consumer electronics.

FAQ

What is the minimum input voltage required for AP7315-22SA-7 to maintain regulation?

The AP7315-22SA-7 requires a minimum input voltage of 2.48V to sustain 2.2V output at 150mA load, based on its typical 280mV dropout voltage. At lighter loads, VIN can drop as low as 2.21V (2.2V + 10mV dropout), but design margin should account for worst-case 380mV dropout per datasheet specifications across temperature and process variation.

Can AP7315-22SA-7 be used without connecting the EN pin?

Yes-EN may be tied directly to VIN to force permanent enable, as the device has no internal pull-up. However, doing so forfeits shutdown capability and increases system-level standby current. If unused, ensure the EN trace is short and routed away from noisy signals to prevent unintended toggling due to coupling.

Is an output capacitor mandatory, and what type is recommended?

An output capacitor is mandatory for stability and transient response. A 0.47µF X5R/X7R ceramic capacitor with ≤100mΩ ESR, placed within 2mm of VOUT and GND pins, is specified. Larger values (e.g., 2.2µF) improve load-step response but require verification against ESR vs. current stability curves in the datasheet.

Does AP7315-22SA-7 include short-circuit protection?

Yes-it features fold-back current limiting that clamps output current to approximately 55mA during VOUT-to-GND short, preventing thermal runaway. This protection activates without external components and resets automatically once the fault is removed, preserving reliability in handheld device drop scenarios.

AP7315-22SA-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):: 2.2V

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:: -

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AP7315-22SA-7 FAQ

1.How can I place an order for AP7315-22SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-22SA-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 AP7315-22SA-7 reliable?

The price and inventory of AP7315-22SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-22SA-7 is usually 5 days.

3.What payment methods are accepted for AP7315-22SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-22SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-22SA-7?

AP7315-22SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-22SA-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 AP7315-22SA-7?

For technical support, including AP7315-22SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-22SA-7 requirements.

6.How does Aetrix verify that AP7315-22SA-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-22SA-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 AP7315-22SA-7 meets industry standards.

7.What is the process for return or replacement of AP7315-22SA-7?

All AP7315-22SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-22SA-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 AP7315-22SA-7 part is unused and in its original packaging.

Return procedure for AP7315-22SA-7:

1.Submit a request within 90 days.

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

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