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

Diodes Incorporated AP7315D-30W5-7

Name: AP7315D-30W5-7
Brand: Diodes Incorporated
SKU: AP7315D-30W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7315D-30W5-7

Manufacturer:: Diodes Incorporated

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

Package:: SC-74A, SOT-753

Datasheet:: AP7315D-30W5-7.pdf

Description:: IC REG LINEAR 3V 150MA SOT25

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Product details

Overview

AP7315D-30W5-7 from Diodes Incorporated is a 3.0V 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 applications.

For engineers reviewing the AP7315D-30W5-7 datasheet, AP7315D-30W5-7 pinout, AP7315D-30W5-7 application, or AP7315D-30W5-7 equivalent, this page provides verified package mapping (SOT25), terminal functions, real-world load transient behavior, dropout voltage vs. temperature curves, and validated alternative LDOs for space-constrained battery-powered designs.

Technical Context

The AP7315D-30W5-7 integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and active discharge path (enabled when EN = low). Its architecture supports fast load transient response (<100µs settling) and maintains stability with 0.47µF ceramic output capacitors.

Unlike non-discharge variants (e.g., AP7315-30W5-7), the "D" suffix denotes an internal 30Ω N-channel MOSFET between VOUT and GND that actively discharges the output capacitor during shutdown, preventing residual voltage hold-up in multi-rail systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.0V ±1% - ensures stable core bias for 3.0V logic rails without external feedback network.
Max Output Current	150mA - sufficient for powering RF transceivers, camera sensors, or baseband ICs in handheld devices.
PSRR	75dB at 1kHz - suppresses switching noise from adjacent DC/DC converters feeding shared input rails.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase jitter in clock-sensitive analog circuits like ADCs or RF synthesizers.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes or standby modes of portable media players.
Dropout Voltage	210mV at 150mA (V_OUT = 3.0V) - enables operation down to 3.21V input, compatible with single-cell Li-ion (3.0–4.2V) under load.
Enable Threshold	V_EN(H) ≥ 1.3V, V_EN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIOs without level-shifting.

Pinout & Package

SOT25 (5-pin, 2.9mm × 2.8mm × 1.3mm) package with exposed thermal pad (not electrically connected); optimized for high-density PCB layouts and thermal dissipation via copper pour tied to GND.

Pin/Terminal	Circuit Role	Design Meaning
1 - VIN	Power input	Accepts 1.7–5.25V; requires 0.47µF ceramic decoupling capacitor placed within 2mm of pin.
2 - GND	Ground reference	Primary return path for input/output currents; must connect to low-impedance ground plane.
3 - EN	Enable control	Active-high logic input; floating state disables regulator; internal pull-down not provided.
4 - NC	No-connect	Internally unconnected; recommended to tie to GND for improved thermal conduction and EMI shielding.
5 - VOUT	Regulated output	Delivers 3.0V ±1%; connects directly to load; output capacitor must be placed adjacent to this pin.

Key Features

Feature	Design Value
Active output discharge	30Ω on-resistance (VEN = 0V) - discharges 10µF load in <300µs, eliminating need for external bleed resistor.
Ultra-low noise	60µV_rms broadband noise - avoids signal corruption in audio codecs or RF front-end biasing.
High PSRR at low frequency	75dB @ 1kHz - rejects ripple from buck converter switching frequencies and their harmonics.
Low I_Q across temperature	30–40µA from –40°C to +85°C - maintains efficiency over full industrial operating range.
Stable with small ceramics	0.47µF min C_OUT - reduces BOM count and board area versus traditional 10µF tantalum solutions.

Applications

RF Power Amplifier Bias

Camera Sensor Core Supply

Use Scenario: Providing clean 3.0V 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 DC/DC outputs.

Use Value: 60µV_rms noise prevents AM-to-PM distortion; 75dB PSRR blocks 2.1GHz PA collector ripple coupling back into supply rail.

Use Scenario: Powering CIS image sensor analog core in smartphone rear cameras.

IC Role / Device Role / Timing Role: Precision voltage source for pixel array and column ADC reference.

Use Value: ±1% accuracy ensures consistent exposure gain calibration; fast load transient response (<50µs) prevents frame skew during auto-exposure changes.

Portable Media Player Audio DAC

Wireless Adapter Baseband IC

Use Scenario: Supplying 3.0V to stereo audio DAC in Bluetooth headphones or portable speakers.

IC Role / Device Role / Timing Role: Ultra-low-noise LDO for analog audio signal chain.

Use Value: 60µV_rms noise translates to >105dB SNR; 35µA quiescent current extends playback time on 100mAh batteries by >8 hours.

Use Scenario: Regulating 3.0V supply for Wi-Fi/BT SoC baseband processor in USB dongles.

IC Role / Device Role / Timing Role: Enable-controlled power domain sequencer for low-power sleep/wake cycles.

Use Value: Active discharge clears VOUT within 200µs after EN deassertion, meeting IEEE 802.11 power-down timing requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-3002E/TT	3.0V fixed, 250mA, 6µA I_Q, no enable, no discharge	Lacks EN control and active discharge; requires external shutdown circuitry	Select when minimal quiescent current is critical and discharge is handled externally.
Torex XC6210B302MR-G	3.0V fixed, 150mA, 35µA I_Q, EN pin, no discharge, 70dB PSRR @ 1kHz	Lower PSRR (70dB vs. 75dB); no integrated discharge path	Choose when footprint compatibility with SOT25 is required but discharge is unnecessary.

Compared with MCP1700T-3002E/TT and XC6210B302MR-G, the AP7315D-30W5-7 uniquely combines 3.0V precision regulation, enable control, and active discharge in a 5-pin SOT25-enabling simpler power sequencing and faster wake-up in battery-powered wireless modules without adding discrete components.

Availability

AP7315D-30W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, portable media player audio DAC, and wireless adapter baseband IC applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for AP7315D-30W5-7 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, designed specifically for noise-sensitive portable electronics where battery life, board space, and supply rail cleanliness are critical constraints.

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 tying it to GND on the PCB to improve thermal conduction from the package's thermal pad and reduce EMI susceptibility. Leaving it floating does not affect regulation but forfeits thermal and shielding benefits.

Does the AP7315D-30W5-7 require an external discharge resistor?

No. The "D" suffix indicates an integrated 30Ω N-channel MOSFET between VOUT and GND that activates automatically when EN is pulled low. This discharges typical 1–10µF output capacitors in under 300µs, eliminating the need for external bleed resistors and reducing standby power loss.

Can the AP7315D-30W5-7 operate with a 2.5V input supply?

Yes, but only at reduced output current. With VIN = 2.5V and VOUT = 3.0V, the device cannot regulate because input is below required headroom. Minimum VIN is 3.21V (3.0V + 210mV dropout) at 150mA load. At lighter loads (<10mA), regulation is possible down to ~3.02V due to lower dropout.

How does the AP7315D-30W5-7 handle short-circuit conditions?

It features fold-back current limiting that clamps output current to ~55mA when VOUT is shorted to GND. This protects the device from thermal damage while maintaining safe junction temperatures. Recovery is automatic once the short is removed and input voltage remains within specification.

AP7315D-30W5-7 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):: 3V

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:: Enable

Protection Features:: Over Current

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

AP7315D-30W5-7 FAQ

1.How can I place an order for AP7315D-30W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7315D-30W5-7 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-30W5-7 reliable?

The price and inventory of AP7315D-30W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7315D-30W5-7 is usually 5 days.

3.What payment methods are accepted for AP7315D-30W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7315D-30W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7315D-30W5-7?

AP7315D-30W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7315D-30W5-7 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-30W5-7?

For technical support, including AP7315D-30W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7315D-30W5-7 requirements.

6.How does Aetrix verify that AP7315D-30W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7315D-30W5-7 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-30W5-7 meets industry standards.

7.What is the process for return or replacement of AP7315D-30W5-7?

All AP7315D-30W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7315D-30W5-7, 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-30W5-7 part is unused and in its original packaging.

Return procedure for AP7315D-30W5-7:

1.Submit a request within 90 days.

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

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