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

Diodes Incorporated AP7315-25W5-7

Name: AP7315-25W5-7
Brand: Diodes Incorporated
SKU: AP7315-25W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315-25W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315-25W5-7.pdf

Description:: IC REG LINEAR 2.5V 150MA SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7315-25W5-7 from Diodes Incorporated is a 2.5V 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 compact portable electronics.

For engineers reviewing the AP7315-25W5-7 datasheet, AP7315-25W5-7 pinout, AP7315-25W5-7 application, or AP7315-25W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout guidance, real-world load transient behavior, and validated alternative LDOs for space-constrained battery-powered designs.

Technical Context

The AP7315-25W5-7 uses a CMOS-based architecture with integrated voltage reference, error amplifier, and current-limit circuitry. Its enable input (EN) provides precise on/off control with defined logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.3V), and it operates across 1.7V–5.25V input while maintaining regulation down to 210mV dropout at 150mA for 2.5V output.

It features non-discharge functionality (no internal output discharge path), thermal shutdown protection, and short-circuit current limiting (~55mA). Stability is ensured with ≥0.47µF ceramic output capacitance and low-ESR requirements validated across –40°C to +85°C ambient operation.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.5V ±1% - ensures stable bias for RF transceivers and precision analog circuitry without external feedback.
Max Output Current	150mA continuous - sufficient for powering baseband processors, camera ISPs, or wireless co-processors in handheld devices.
PSRR	75dB at 1kHz - suppresses switching noise from PMICs or DC-DC converters feeding adjacent digital blocks.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise impact on VCOs and ADC reference supplies.
Quiescent Current	35µA typical - extends battery life in always-on sensor or standby-mode subsystems.
Dropout Voltage	280mV max at 150mA - enables operation from single-cell Li-ion (3.0V min) or 3.3V rail with margin.
Input Voltage Range	1.7V to 5.25V - supports direct connection to wide-range battery inputs or post-regulated system rails.

Pinout & Package

SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm) package with exposed thermal pad (not electrically connected); optimized for high-density PCB layouts and thermal performance via copper pour under the pad tied to GND.

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 and ripple coupling.
2 - GND	Ground reference	Primary return path for load current; must connect to low-impedance ground plane to maintain PSRR and stability.
3 - EN	Enable control	Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; floating state is prohibited.
4 - NC	No-connect	Internally unconnected; recommended to tie to GND for improved thermal dissipation and EMI shielding.
5 - VOUT	Regulated output	Delivers 2.5V ±1% to load; requires 0.47µF ceramic capacitor placed within 2mm of pin for optimal transient response.

Key Features

Feature	Design Value
High PSRR	75dB @ 1kHz - maintains clean power delivery despite noisy shared input rails from switching regulators.
Ultra-low noise	60µV_rms (10Hz–100kHz) - avoids degradation of SNR in RF front-ends and high-resolution ADCs.
Low quiescent current	35µA typical - enables >1-year battery life in IoT sensors operating in deep-sleep cycles.
Wide input range	1.7V–5.25V - accommodates aging Li-ion cells (2.8V–4.2V) and 3.3V/5V system rails without redesign.
±1% output accuracy	Guaranteed over temperature and line/load - eliminates need for post-production calibration in production test.

Applications

RF Power Amplifier Bias

Camera Image Signal Processor

Use Scenario: Supplies clean 2.5V bias to GaAs pHEMT power amplifiers in 4G/5G mobile front-ends.

IC Role / Device Role / Timing Role: Low-noise LDO providing stable gate/base bias voltage independent of PA modulation envelope.

Use Value: 60µV_rms noise prevents AM-to-PM distortion; 75dB PSRR rejects PA collector switching spikes.

Use Scenario: Powers analog front-end and ADC section of smartphone camera modules.

IC Role / Device Role / Timing Role: Precision voltage source for image sensor analog chain and correlated double sampling circuits.

Use Value: ±1% output accuracy ensures consistent pixel gain calibration; low dropout enables use with decaying battery voltage.

Wireless Adapter Core Logic

Portable Media Player Audio Codec

Use Scenario: Regulates 2.5V supply for Bluetooth/Wi-Fi SoC core logic and PHY interface.

IC Role / Device Role / Timing Role: Primary LDO for digital core domain requiring fast load transient response during packet bursts.

Use Value: 150mA rating supports burst-mode CPU activity; 35µA IQ enables low-power sleep states without rail collapse.

Use Scenario: Delivers 2.5V to stereo audio DAC and headphone amplifier in portable media players.

IC Role / Device Role / Timing Role: Low-noise analog supply isolating sensitive audio paths from digital switching noise.

Use Value: 60µV_rms noise floor preserves >100dB THD+N performance; small SOT25 footprint saves board space near codec IC.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-2502E/TO	250mA output, 6µA IQ, but only 60dB PSRR at 1kHz and 30µV_rms noise.	Better for ultra-low-power microcontroller domains; insufficient PSRR for RF supply.	Select when lowest quiescent current is critical and RF noise immunity is not required.
Torex XC6206P252MR-G	150mA output, ±2% accuracy, 70dB PSRR, 45µV_rms noise, SOT23-3 package.	Lacks enable pin and has looser accuracy - unsuitable for precision analog or sequenced power systems.	Choose only for cost-sensitive, non-sequenced, non-RF applications where enable control is unnecessary.

Compared with MCP1700-2502E/TO and XC6206P252MR-G, the AP7315-25W5-7 uniquely balances RF-grade PSRR, tight output accuracy, and integrated enable control in a thermally enhanced SOT25 package - making it optimal for multi-rail portable systems requiring both efficiency and signal integrity.

Availability

AP7315-25W5-7 is available at Aetrix Electronics and suitable for RF power amplifier biasing, camera ISP power, wireless adapter core logic, and portable media player audio codecs requiring stable component supply across high-mix, low-volume production runs.

Supply support for AP7315-25W5-7 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 manufacturer specializing in discrete, analog, and mixed-signal solutions for consumer, industrial, and communications markets.

The AP7315 series belongs to Diodes' high-performance LDO portfolio, engineered specifically for noise-sensitive portable electronics where PSRR, output accuracy, and ultra-low IQ are critical design constraints.

FAQ

What is the thermal pad connection requirement for AP7315-25W5-7?

The SOT25 package includes an exposed thermal pad that is not electrically connected. For optimal thermal performance, it must be soldered to a large copper area on the PCB and connected to the GND net - this reduces junction-to-ambient thermal resistance by up to 40°C/W and prevents thermal shutdown during sustained 150mA loads.

Can AP7315-25W5-7 be used with ceramic capacitors smaller than 0.47µF?

No - the datasheet specifies 0.47µF minimum ceramic output capacitance for stability across all operating conditions. Using smaller values risks oscillation or degraded transient response, especially under 100mA load steps. The device is not characterized for <0.47µF, and no ESR compensation network is provided.

Does AP7315-25W5-7 include reverse-current protection?

No - the AP7315-25W5-7 lacks internal reverse-current blocking. If VOUT exceeds VIN (e.g., during hot-swap or backup battery scenarios), current can flow backward from output to input. An external Schottky diode in series with VIN is required for reverse-polarity or backfeed protection.

How does the EN pin behave during power-up sequencing?

The EN pin must be held low until VIN reaches ≥1.7V to prevent premature turn-on and potential output overshoot. Once VIN is stable, driving EN ≥1.3V enables regulated output with typical 50µs startup delay. Pulling EN ≤0.5V disables the output and reduces supply current to 0.01µA.

AP7315-25W5-7 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):: 2.5V

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

AP7315-25W5-7 FAQ

1.How can I place an order for AP7315-25W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315-25W5-7 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 AP7315-25W5-7 reliable?

The price and inventory of AP7315-25W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315-25W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315-25W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315-25W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315-25W5-7?

AP7315-25W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315-25W5-7 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 AP7315-25W5-7?

For technical support, including AP7315-25W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315-25W5-7 requirements.

6.How does Aetrix verify that AP7315-25W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315-25W5-7 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 AP7315-25W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315-25W5-7?

All AP7315-25W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315-25W5-7, 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 AP7315-25W5-7 part is unused and in its original packaging.

Return procedure for AP7315-25W5-7:

1.Submit a request within 90 days.

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

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