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

Diodes Incorporated AP7315D-26W5-7

Name: AP7315D-26W5-7
Brand: Diodes Incorporated
SKU: AP7315D-26W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315D-26W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315D-26W5-7.pdf

Description:: IC REG LINEAR 2.6V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7315D-26W5-7 from Diodes Incorporated is a 2.6V 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 player power rails.

For engineers reviewing the AP7315D-26W5-7 datasheet, AP7315D-26W5-7 pinout, AP7315D-26W5-7 application, or AP7315D-26W5-7 equivalent, key selection criteria include dropout voltage (210mV at 150mA for 2.6V output), EN pin logic thresholds (0.5V low / 1.3V high), thermal performance in SOT25, and discharge functionality for fast VOUT decay during shutdown.

Technical Context

The AP7315D-26W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active discharge FET. Its architecture enables stable regulation under fast load transients while maintaining low noise and high PSRR across 10Hz–1MHz.

Unlike non-discharge variants (e.g., AP7315-26W5-7), the "D" suffix denotes an internal 30Ω N-channel discharge path between VOUT and GND when EN = low, reducing residual output voltage within microseconds-critical for sequencing-sensitive RF and camera modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.6V ±1% - ensures stable bias for 2.5V–2.7V logic and analog circuits without external feedback.
Max Output Current	150mA - supports single-core microcontrollers, RF transceivers, and image sensor interfaces.
Dropout Voltage	210mV at 150mA - enables operation from 2.81V input, compatible with Li-ion single-cell and 3.3V rail splitting.
PSRR	75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding noisy power domains.
Output Noise	60µV_rms (10Hz–100kHz) - preserves signal integrity in ADC reference supplies and RF LNA biasing.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes and standby modes of portable devices.
Enable Thresholds	V_EN(H) ≥ 1.3V, V_EN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO without level-shifting.

Pinout & Package

SOT25 package (5-pin, 2.9mm × 2.8mm × 1.3mm) with exposed thermal pad; optimized for compact PCB layout and thermal dissipation via GND-connected copper area.

Pin/Terminal	Circuit Role	Design Meaning
1 – VIN	Power input	Accepts 1.7V–5.25V; requires 0.47µF ceramic capacitor placed adjacent to minimize input impedance.
2 – GND	Ground reference	Primary return path; must connect directly to low-impedance ground plane to stabilize regulation and reduce noise coupling.
3 – EN	Enable control	Active-high logic input; floating state disables regulator-must be tied to VIN or controlled by host MCU GPIO.
4 – NC	No-connect	Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding.
5 – VOUT	Regulated output	Delivers 2.6V ±1%; includes integrated discharge FET to rapidly pull down output when disabled.

Key Features

Feature	Design Value
High PSRR	75dB @ 1kHz - rejects ripple from buck converters powering baseband processors in smartphones.
Low-noise output	60µV_rms (10Hz–100kHz) - meets noise floor requirements for high-resolution audio DACs and RF synthesizers.
Active discharge	30Ω on-resistance - discharges 10µF load in <1ms, preventing latch-up in multi-rail systems during power-down.
Ultra-low IQ	35µA typical - reduces no-load power loss to 91nW per µV of VIN, critical for coin-cell applications.
Wide input range	1.7V–5.25V - supports direct connection to single Li-ion (2.7–4.2V), USB (4.75–5.25V), and regulated 3.3V/2.5V rails.

Applications

Smartphone RF Power Supply

Portable Camera Module Bias

Use Scenario: Powers RF front-end modules (PA, LNA, switch) requiring clean, sequenced 2.6V bias independent of noisy PMIC outputs.

IC Role / Device Role / Timing Role: Low-noise LDO providing isolated, regulated VCC for RF ICs; EN pin synchronized with baseband processor wake-up signals.

Use Value: 75dB PSRR prevents GSM/UMTS switching noise from degrading receiver sensitivity; active discharge ensures safe power-down before antenna switching.

Use Scenario: Supplies image sensor analog core and ISP interface at 2.6V with minimal thermal drift and transient-induced artifacts.

IC Role / Device Role / Timing Role: Precision voltage source for sensor pixel array and column ADC reference; fast load transient response (<10µs settling) maintains image uniformity.

Use Value: 60µV_rms noise avoids fixed-pattern noise in raw image data; ±1% accuracy ensures consistent exposure calibration across temperature.

Wireless Audio Codec Power

IoT Sensor Node Core Supply

Use Scenario: Delivers ultra-low-noise 2.6V to stereo audio codecs in Bluetooth earbuds and hearing aids.

IC Role / Device Role / Timing Role: Primary analog supply for DAC/ADC sections; EN pin controlled by Bluetooth SoC to gate power during sleep cycles.

Use Value: 35µA quiescent current extends battery runtime in multi-day wearables; 210mV dropout enables use with aging Li-ion cells down to 2.81V.

Use Scenario: Powers ultra-low-power microcontroller and environmental sensors (temperature/humidity) in battery-operated edge nodes.

IC Role / Device Role / Timing Role: Main system rail with programmable enable/disable for duty-cycled sensing; thermal pad connected to GND plane for ambient temperature stability.

Use Value: ±30ppm/°C tempco minimizes sensor offset drift; 150mA capacity supports brief BLE transmission bursts without brownout.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7315-26W5-7	No internal discharge FET; VOUT floats after disable	Acceptable where output hold time is not safety-critical (e.g., non-sequenced logic rails)	Select when lower cost and absence of discharge simplifies system-level timing control.
MCP1700-2602E/TO	250mA output, 6µA IQ, but only 60dB PSRR at 1kHz and no discharge function	Better for ultra-low-power always-on monitoring; insufficient PSRR for RF co-location	Prefer for energy-harvesting nodes where IQ dominates lifetime, but avoid in RF-dense layouts.

Compared with AP7315-26W5-7, the D-suffix variant adds essential discharge capability for safe multi-rail sequencing, while MCP1700 trades PSRR and discharge for lower IQ-making AP7315D-26W5-7 optimal for RF and imaging subsystems demanding both noise immunity and controlled shutdown.

Availability

AP7315D-26W5-7 is available at Aetrix Electronics and suitable for smartphone RF supply, portable camera module bias, and wireless audio codec power requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP7315D-26W5-7 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 belongs to Diodes' high-performance LDO portfolio, designed specifically for noise-sensitive portable electronics requiring precision voltage regulation, fast transient response, and robust enable/discharge control.

FAQ

What is the purpose of the NC pin (Pin 4) in the SOT25 package?

Pin 4 is internally not connected and serves no electrical function. Diodes Incorporated recommends connecting it to GND on the PCB to maximize copper area for thermal dissipation and improve EMI shielding-this does not affect regulation but enhances thermal performance and noise immunity.

Does the AP7315D-26W5-7 require an external discharge resistor?

No. The "D" suffix indicates an integrated N-channel discharge FET (30Ω typical on-resistance) between VOUT and GND. When EN is pulled low, this FET actively pulls VOUT to GND, eliminating the need for external components and ensuring sub-millisecond discharge of typical 1–10µF output capacitors.

Can the AP7315D-26W5-7 operate with a 1µF output capacitor?

Yes-stability is guaranteed with ceramic capacitors ≥0.47µF and ESR ≤100mΩ. A 1µF X5R/X7R ceramic capacitor meets these requirements and improves load transient response compared to the minimum 0.47µF, especially for pulsed-current loads like RF PAs.

How does the AP7315D-26W5-7 behave during input undervoltage?

Below 1.7V input, regulation ceases and VOUT follows VIN minus dropout voltage. The device does not latch or reset; it resumes regulation immediately once VIN rises above the minimum operating voltage plus dropout. No UVLO circuitry is included-system-level supervision is required if undervoltage protection is needed.

AP7315D-26W5-7 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):: 2.6V

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:: Enable

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

AP7315D-26W5-7 FAQ

1.How can I place an order for AP7315D-26W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315D-26W5-7 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-26W5-7 reliable?

The price and inventory of AP7315D-26W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315D-26W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315D-26W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315D-26W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315D-26W5-7?

AP7315D-26W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315D-26W5-7 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-26W5-7?

For technical support, including AP7315D-26W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315D-26W5-7 requirements.

6.How does Aetrix verify that AP7315D-26W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315D-26W5-7 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-26W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315D-26W5-7?

All AP7315D-26W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315D-26W5-7, 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-26W5-7 part is unused and in its original packaging.

Return procedure for AP7315D-26W5-7:

1.Submit a request within 90 days.

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

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