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

Diodes Incorporated AP7315-26SR-7

Name: AP7315-26SR-7
Brand: Diodes Incorporated
SKU: AP7315-26SR-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-26SR-7

Manufacturer:: Diodes Incorporated

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

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

Datasheet:: AP7315-26SR-7.pdf

Description:: IC REG LINEAR 2.6V 150MA SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:4,815

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Product details

Overview

AP7315-26SR-7 from Diodes Incorporated is a 2.6V 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. It features enable control, operates from 1.7V to 5.25V input, and is optimized for RF supply rails in space-constrained portable devices.

For engineers reviewing the AP7315-26SR-7 datasheet, AP7315-26SR-7 pinout, AP7315-26SR-7 application, or AP7315-26SR-7 equivalent, key selection criteria include dropout voltage (210mV @ 150mA for 2.6V output), thermal performance in SOT23-3, EN logic thresholds (0.5V low / 1.3V high), and stability with 0.47µF ceramic capacitors.

Technical Context

The AP7315-26SR-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active-high enable input. Its architecture delivers fast load transient response (<100µs settling) and maintains regulation down to 1.7V input-critical for single-cell Li-ion or multi-cell alkaline systems.

It implements non-discharge functionality (no internal output discharge path), requires no external compensation, and achieves stable operation with low-ESR ceramic capacitors as small as 0.47µF on both input and output. The device is rated for –40°C to +85°C ambient operation and includes short-circuit protection clamping output current to ~55mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.6V ±1% - ensures stable bias for RF power amplifiers and analog sensor front-ends without external feedback.
Max Output Current	150mA - sufficient to power baseband processors, camera modules, or wireless transceivers in handheld designs.
Dropout Voltage	210mV @ 150mA - enables operation with ≤2.81V input, supporting single-cell battery systems across full discharge range.
PSRR	75dB @ 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy power domains.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise in VCOs and jitter in high-speed data interfaces.
Quiescent Current	35µA @ no load - extends battery life in always-on sensor nodes and standby modes.
Enable Thresholds	V_EN(H) = 1.3V min, V_EN(L) = 0.5V max - compatible with 1.8V/3.3V GPIO without level-shifting.

Pinout & Package

AP7315-26SR-7 is packaged in SOT23-3 (SR variant), a 1.3mm × 2.9mm × 1.0mm surface-mount package with gull-wing leads. Thermal pad is absent; PCB copper area under the package body improves heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
1 (GND)	Ground reference	Primary return path for load current and internal circuitry; must connect to low-impedance system ground plane.
2 (VIN)	Input power supply	Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed within 2mm of this pin and GND.
3 (VOUT)	Regulated output	Delivers 2.6V ±1%; output capacitor (0.47µF ceramic) must be placed adjacent to minimize loop inductance.

Key Features

Feature	Design Value
High PSRR	75dB at 1kHz - rejects ripple from switching regulators powering adjacent subsystems.
Ultra-low noise	60µV_rms - preserves signal integrity in RF and audio signal chains without additional filtering.
Low quiescent current	35µA - enables >1-year battery life in intermittent-sensing IoT endpoints.
Wide input range	1.7V to 5.25V - supports direct connection to Li-ion, Li-Po, or 3.3V/5V system rails.
Enable control	Active-high EN (pin not present in SR package; tied internally to VIN) - simplifies power sequencing in compact layouts.

Applications

RF Power Amplifier Bias

Camera Module Core Supply

Use Scenario: Providing clean, stable 2.6V bias to GaAs pHEMT power amplifiers in 4G/5G mobile front-ends.

IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated voltage with minimal phase noise contribution to transmit chain.

Use Value: 60µV_rms noise prevents EVM degradation; 75dB PSRR isolates PA from noisy PMIC switchers.

Use Scenario: Powering image signal processor (ISP) core logic and analog front-end in smartphone camera modules.

IC Role / Device Role / Timing Role: Primary 2.6V supply ensuring timing margin compliance for high-speed MIPI CSI-2 interfaces.

Use Value: ±1% accuracy maintains ADC reference stability; 210mV dropout sustains operation during battery sag.

Wireless Adapter SoC Core

Portable Media Player Audio Codec

Use Scenario: Supplying 2.6V core voltage to Bluetooth/Wi-Fi combo chips in USB dongles and wearables.

IC Role / Device Role / Timing Role: Efficient, low-quiescent LDO enabling rapid wake-from-sleep transitions without rail collapse.

Use Value: 35µA I_Q reduces standby drain; fast transient response (<100µs) prevents brownout during burst transmission.

Use Scenario: Delivering ultra-clean 2.6V to stereo audio DAC/ADC in portable media players and headphones.

IC Role / Device Role / Timing Role: Noise-sensitive analog supply decoupled from digital switching noise sources.

Use Value: 60µV_rms noise avoids audible hiss; 1.7V min input allows operation from partially discharged batteries.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-2602E/TO	2.6V fixed, 250mA, 6µA I_Q, but only 60dB PSRR @ 1kHz and 120µV_rms noise.	Limited in RF-sensitive roles due to higher noise and lower PSRR; better suited for digital logic rails.	Select when ultra-low I_Q dominates over noise/PSRR requirements.
Torex XC6206P262MR-G	2.6V fixed, 150mA, 15µA I_Q, 70dB PSRR @ 1kHz, 80µV_rms noise, SOT23-3 package.	Higher noise degrades RF/audio performance; slightly lower PSRR reduces noise rejection capability.	Choose only if supply chain constraints require Torex sourcing and noise budget permits 20µV_rms increase.

Compared with MCP1700-2602E/TO and XC6206P262MR-G, the AP7315-26SR-7 uniquely balances ultra-low noise (60µV_rms), high PSRR (75dB), and industry-standard SOT23-3 footprint-making it optimal for noise-critical RF and precision analog loads where competing alternatives trade off one parameter for another.

Availability

AP7315-26SR-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera module core supply, and wireless adapter SoC core applications requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for AP7315-26SR-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 manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

The AP7315 series belongs to Diodes' high-performance LDO portfolio, designed specifically for noise-sensitive portable electronics where PSRR, output accuracy, and quiescent current are critical system-level constraints.

FAQ

What is the maximum input voltage for AP7315-26SR-7?

The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger internal protection or cause permanent damage. Operation above 5.25V is not characterized or guaranteed per the datasheet.

Does AP7315-26SR-7 include an enable pin?

No-the SR suffix denotes the SOT23-3 package variant with no dedicated EN pin; enable functionality is disabled and the regulator operates continuously when powered. The EN pin is only present in SOT25 (5-pin) and X2-DFN1010-4 (4-pin) variants. In SR, internal enable is tied high.

Can AP7315-26SR-7 be used with ceramic output capacitors smaller than 0.47µF?

No-0.47µF is the minimum recommended ceramic output capacitance for guaranteed stability across temperature and load conditions. Using smaller values (e.g., 0.1µF) may cause oscillation or degraded transient response, as confirmed by the ESR vs. output current stability chart in the datasheet.

Is AP7315-26SR-7 qualified for automotive applications?

No-AP7315-26SR-7 is not AEC-Q100 qualified. Diodes offers automotive-grade versions (e.g., AP7315Q series) with PPAP capability, IATF 16949 manufacturing, and extended temperature screening. This part is intended for commercial/industrial portable electronics only.

AP7315-26SR-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):: 2.6V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.32V @ 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

AP7315-26SR-7 FAQ

1.How can I place an order for AP7315-26SR-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-26SR-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 AP7315-26SR-7 reliable?

The price and inventory of AP7315-26SR-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-26SR-7 is usually 5 days.

3.What payment methods are accepted for AP7315-26SR-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-26SR-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-26SR-7?

AP7315-26SR-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-26SR-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 AP7315-26SR-7?

For technical support, including AP7315-26SR-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-26SR-7 requirements.

6.How does Aetrix verify that AP7315-26SR-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-26SR-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 AP7315-26SR-7 meets industry standards.

7.What is the process for return or replacement of AP7315-26SR-7?

All AP7315-26SR-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-26SR-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 AP7315-26SR-7 part is unused and in its original packaging.

Return procedure for AP7315-26SR-7:

1.Submit a request within 90 days.

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

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