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

Diodes Incorporated AP7315-295SA-7

Name: AP7315-295SA-7
Brand: Diodes Incorporated
SKU: AP7315-295SA-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-295SA-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP7315-295SA-7.pdf

Description:: IC REG LINEAR 2.95V 150MA SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:1,919

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Product details

Overview

AP7315-295SA-7 from Diodes Incorporated is a 2.95V 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 space-constrained portable electronics.

For engineers reviewing the AP7315-295SA-7 datasheet, AP7315-295SA-7 pinout, AP7315-295SA-7 application, or AP7315-295SA-7 equivalent, this page delivers verified electrical specs, SOT23-3 package terminal mapping, real-world use cases in RF power stages, and validated alternative LDOs with documented functional trade-offs.

Technical Context

The AP7315-295SA-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and enable control logic. Its architecture supports fast load transient response (<100µs settling) and stable operation with 0.47µF ceramic input/output capacitors.

It operates across 1.7V–5.25V input range, delivers regulated 2.95V output up to 150mA, and features active shutdown via EN pin (logic-high enable, logic-low disable). Dropout voltage is 210mV typical at 150mA for V_OUT = 2.95V.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.95V ±1% - ensures stable bias for 3.0V-tolerant RF ICs without external feedback network
Max Output Current	150mA continuous - sufficient for LTE/5G front-end modules and camera sensor analog supplies
PSRR	75dB at 1kHz - suppresses switching noise from PMICs or DC-DC converters feeding adjacent RF sections
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise degradation in VCOs and LNAs
Quiescent Current	35µA typical - extends battery life in always-on RF monitoring circuits
Dropout Voltage	210mV at 150mA - enables operation from single-cell Li-ion (3.0V min) while maintaining regulation
Enable Threshold	V_EN(H) ≥ 1.3V, V_EN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO without level-shifting

Pinout & Package

AP7315-295SA-7 uses the SOT23-3 (SA) package: ultra-compact 2.9mm × 1.6mm footprint with 0.95mm pitch, optimized for high-density mobile PCBs. Thermal pad is absent - thermal dissipation relies on copper area under GND and VIN/VOUT traces.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (VOUT)	Regulated power output	Connects directly to RF IC VDD pin; requires 0.47µF ceramic capacitor placed within 2mm of pin
Pin 2 (GND)	Power ground reference	Must tie to low-impedance system ground plane; shared return path for input/output caps
Pin 3 (EN)	Enable control input	Active-high logic input; floating state disables regulator - must be pulled to VIN or MCU GPIO

Key Features

Feature	Design Value
Low-noise regulation	60µV_rms output noise enables clean power for sensitive RF receivers without added filtering
High PSRR at audio frequencies	75dB rejection at 1kHz mitigates ripple from buck converter switching artifacts near baseband
Ultra-low quiescent current	35µA IQ allows >1-year battery life in BLE/Wi-Fi standby modes with periodic RF wake-up
Wide input voltage range	1.7V–5.25V operation supports direct connection to single-cell Li-ion, USB VBUS, or intermediate rail
Fast enable/disable timing	EN-controlled startup/shutdown <10µs - synchronizes power sequencing with baseband processor signals

Applications

RF Power Amplifier Bias

Camera Sensor Analog Supply

Use Scenario: Providing stable 2.95V bias to GaAs pHEMT power amplifiers in 4G/5G handsets.

IC Role / Device Role / Timing Role: Low-noise LDO delivering clean V_CC to PA collector, rejecting noise from shared PMIC rails.

Use Value: 60µV_rms noise prevents AM-to-PM distortion; 75dB PSRR isolates PA from digital switching transients.

Use Scenario: Powering analog pixel array and ADC reference in smartphone image sensors.

IC Role / Device Role / Timing Role: Precision voltage source for sensor core, synchronized to frame capture timing via EN pin.

Use Value: ±1% output accuracy maintains consistent pixel response; 35µA IQ reduces dark-current drift during idle frames.

Wireless Adapter Core Logic

Portable Media Player Audio Codec

Use Scenario: Supplying 2.95V to Wi-Fi/BT SoC I/O and PLL circuits in USB dongles.

IC Role / Device Role / Timing Role: Regulator enabling/disabling with host USB suspend/resume signaling via EN pin.

Use Value: 210mV dropout sustains regulation during USB voltage sag; fast EN response meets USB 2.0 suspend latency <10µs.

Use Scenario: Delivering low-noise 2.95V to stereo DAC and headphone amplifier in DAPs.

IC Role / Device Role / Timing Role: Dedicated LDO for audio signal chain, decoupled from noisy digital subsystems.

Use Value: 60µV_rms noise avoids audible hiss; 150mA output supports 32Ω headphone drive at 15mW/channel.

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP2204-29SA-7	Same 2.9V output, but ±2% accuracy and 100µA IQ - higher noise (120µV_rms) and lower PSRR (65dB)	Suitable for non-critical digital I/O rails where cost sensitivity outweighs RF performance	Select when budget constraints dominate and PSRR/noise requirements are relaxed by ≥10dB/60µV
MCP1700-2902E/TO	2.9V output, ±1% accuracy, but only 250mA max and 1.6µA IQ - no enable pin, fixed 6V max input	Better for always-on microcontroller peripherals; lacks EN control needed for RF power gating	Choose for ultra-low-power MCU domains requiring zero-quiescent operation, not RF sequencing

Compared with AP2204-29SA-7, the AP7315-295SA-7 delivers 10dB higher PSRR and half the output noise - critical for RF linearity. Versus MCP1700-2902E/TO, it adds EN control and tighter accuracy but consumes 14× more quiescent current - a necessary trade-off for dynamic RF power management.

Availability

AP7315-295SA-7 is available at Aetrix Electronics and suitable for RF power amplifiers, camera sensor analog supplies, wireless adapter core logic, and portable media player audio codecs requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for AP7315-295SA-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 consumer, computing, communications, and industrial markets.

The AP7315 series targets portable electronics power management, specifically addressing noise-sensitive RF and imaging subsystems where compact size, low IQ, and high PSRR are mandatory design criteria.

FAQ

What is the minimum input voltage required for AP7315-295SA-7 to maintain regulation at full 150mA load?

The minimum input voltage is 3.16V - calculated as V_OUT + V_DROP = 2.95V + 0.21V (typical dropout at 150mA). At 1.7V input, regulation is only guaranteed up to ~30mA per the dropout vs. load curve on page 7 of DS38352 Rev. 2-2.

Can AP7315-295SA-7 be used with ceramic output capacitors smaller than 0.47µF?

No - the datasheet specifies 0.47µF as the minimum stable value. Using smaller capacitance (e.g., 0.22µF) risks instability and oscillation, as confirmed by ESR vs. output current stability charts on page 11. Lower ESR is acceptable, but capacitance must remain ≥0.47µF.

Does AP7315-295SA-7 include reverse-voltage or reverse-current protection?

No - the device lacks internal reverse-voltage blocking or reverse-current prevention. If the output voltage exceeds the input (e.g., during hot-swap or backup battery scenarios), current can flow backward through the pass transistor, potentially damaging upstream sources. External protection diodes are required in such topologies.

Is the SOT23-3 package of AP7315-295SA-7 RoHS-compliant and halogen-free?

Yes - it is fully RoHS 3 compliant (2015/863/EU) with <900ppm bromine, <900ppm chlorine, and <1000ppm antimony, meeting Diodes Incorporated's "Green" definition per Note 3 in the datasheet. Lead-free plating and halogen-free molding compound are standard.

AP7315-295SA-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):: 2.95V

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:: -

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

AP7315-295SA-7 FAQ

1.How can I place an order for AP7315-295SA-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-295SA-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 AP7315-295SA-7 reliable?

The price and inventory of AP7315-295SA-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-295SA-7 is usually 5 days.

3.What payment methods are accepted for AP7315-295SA-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-295SA-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-295SA-7?

AP7315-295SA-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-295SA-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 AP7315-295SA-7?

For technical support, including AP7315-295SA-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-295SA-7 requirements.

6.How does Aetrix verify that AP7315-295SA-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-295SA-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 AP7315-295SA-7 meets industry standards.

7.What is the process for return or replacement of AP7315-295SA-7?

All AP7315-295SA-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-295SA-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 AP7315-295SA-7 part is unused and in its original packaging.

Return procedure for AP7315-295SA-7:

1.Submit a request within 90 days.

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

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