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

Diodes Incorporated AP7341-15FS4-7

Name: AP7341-15FS4-7
Brand: Diodes Incorporated
SKU: AP7341-15FS4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7341-15FS4-7

Manufacturer:: Diodes Incorporated

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

Package:: 4-XDFN Exposed Pad

Datasheet:: AP7341-15FS4-7.pdf

Description:: IC REG LINEAR 1.5V 300MA 4DFN

Quantity:: RFQ Add To RFQ list

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Inventory:4,650

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Product details

Overview

AP7341-15FS4-7 from Diodes Incorporated is a 1.5V fixed-output, 300mA 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 where stable, low-noise biasing is critical.

For engineers reviewing the AP7341-15FS4-7 datasheet, AP7341-15FS4-7 pinout, AP7341-15FS4-7 application, or AP7341-15FS4-7 equivalent, key selection criteria include dropout performance at 150mA (0.50V typ), enable-controlled shutdown (I_STANDBY = 0.01µA), thermal pad layout guidance, and compatibility with 1.0µF ceramic input/output capacitors.

Technical Context

The AP7341-15FS4-7 employs a CMOS-based LDO 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 features fold-back short-circuit protection clamping output current to ~55mA under V_OUT-to-GND fault.

Designed for high-density PCBs, it operates across 1.7V–5.25V input range while maintaining regulation down to 1.5V output. The device delivers stable performance over −40°C to +85°C ambient, with output voltage temperature coefficient of ±30ppm/°C and load regulation of ≤30mV from 1mA to 300mA.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.5V ±1% at TA = +25°C; ±1.5% over full temperature range - ensures consistent bias for sensitive analog/RF stages.
Max Output Current	300mA guaranteed - supports moderate-power subsystems like camera ISPs or baseband ICs without thermal derating in typical layouts.
PSRR	75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy power domains.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise impact in RF synthesizers and ADC reference supplies.
Quiescent Current	35µA typical - enables ultra-low-power standby modes in battery-operated devices with minimal leakage penalty.
Dropout Voltage	0.50V typ at 150mA (1.5V output) - allows operation from single-cell Li-ion (3.0V min) or 2xAA alkaline (2.4V min) with margin.
Enable Thresholds	V_IL ≤ 0.5V, V_IH ≥ 1.3V - compatible with 1.8V/3.3V GPIO without level-shifting; prevents false turn-on from floating inputs.

Pinout & Package

The AP7341-15FS4-7 is housed in a 1.0mm × 1.0mm X2-DFN1010-4 package with exposed thermal pad (non-electrical, recommended connected to GND pour). Pin 1 (VOUT) and Pin 2 (GND) are adjacent for minimal loop inductance; Pin 3 (EN) and Pin 4 (VIN) are diagonally opposite to reduce coupling.

Pin/Terminal	Circuit Role	Design Meaning
1 - VOUT	Regulated power output	Low-impedance source for downstream circuitry; requires local 1.0µF ceramic capacitor placed within 2mm.
2 - GND	Power ground reference	Primary return path for load current; must connect directly to solid ground plane beneath thermal pad.
3 - EN	Active-high enable control	Pulled high to enable regulation; pulled low (<0.5V) to enter 0.01µA shutdown - no external pull-up required if tied to VIN.
4 - VIN	Unregulated input supply	Accepts 1.7V–5.25V; requires 0.47µF ceramic decoupling capacitor placed adjacent to pin to suppress supply transients.

Key Features

Feature	Design Value
Ultra-low noise output	60µV_rms (10Hz–100kHz) - preserves SNR in audio codecs and RF front-end bias networks.
High PSRR at low frequency	75dB @ 1kHz - rejects ripple from buck converter switching frequencies and their harmonics.
Sub-1V dropout at 150mA	0.50V typ for 1.5V output - extends battery runtime in single-cell systems by minimizing headroom loss.
Microamp-level quiescent draw	35µA operating / 0.01µA shutdown - enables >1-year shelf life in always-on IoT sensor nodes.
Thermally optimized DFN	X2-DFN1010-4 with thermal pad - achieves 220°C/W θ_JA on 2-layer board, supporting 300mA continuous in compact layouts.

Applications

Smartphone Camera Module

Wireless Communication SoC

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

IC Role / Device Role / Timing Role: Provides clean, stable 1.5V bias to analog pixel readout circuits and low-jitter clock generation blocks.

Use Value: 60µV_rms noise and 75dB PSRR prevent fixed-pattern noise and timing jitter that degrade image quality.

Use Scenario: Supplying RF transceiver bias rails in Bluetooth/Wi-Fi combo chips.

IC Role / Device Role / Timing Role: Delivers regulated 1.5V to PA driver stages and LNA bias networks requiring low-noise, fast transient response.

Use Value: 35µA quiescent current and enable control support low-power listening modes without compromising RF linearity.

Portable Media Player Audio Codec

Industrial Handheld Scanner

Use Scenario: Generating reference voltage and analog supply for stereo DAC/ADC in battery-powered media players.

IC Role / Device Role / Timing Role: Supplies 1.5V to precision audio conversion circuitry with minimal added noise floor contribution.

Use Value: ±1% output accuracy and ±30ppm/°C drift ensure THD+N remains below 0.005% across operating temperature.

Use Scenario: Powering barcode laser driver and CMOS image sensor in rugged handheld scanners.

IC Role / Device Role / Timing Role: Regulates 1.5V for optical sensing and decoding logic in intermittent-use industrial tools.

Use Value: 0.50V dropout at 150mA enables reliable operation down to 2.0V battery voltage, extending usable charge cycle.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-1502E/TO	1.5V fixed, 250mA, 6µA I_Q, but only 60dB PSRR @ 1kHz and 120µV_rms noise.	Limited to non-RF applications due to higher noise and lower PSRR; suitable for digital logic rails only.	Choose when ultra-low I_Q dominates over noise/PSRR requirements and load current ≤250mA.
Torex XC6206P152MR-G	1.5V fixed, 300mA, 15µA I_Q, 70dB PSRR @ 1kHz, 80µV_rms noise, SOT-23-5 package.	Larger footprint and higher noise than AP7341-15FS4-7; lacks integrated thermal pad for high-current density designs.	Prefer when board space allows SOT-23 and cost sensitivity outweighs thermal/noise advantages of DFN.

Compared with MCP1700-1502E/TO and XC6206P152MR-G, the AP7341-15FS4-7 uniquely balances 300mA capability, 60µV_rms noise, 75dB PSRR, and 1.0mm² footprint - making it optimal for space-constrained RF/analog subsystems where all three parameters are simultaneously critical.

Availability

AP7341-15FS4-7 is available at Aetrix Electronics and suitable for smartphone camera modules, wireless communication SoCs, portable media player audio codecs, and industrial handheld scanners requiring stable component supply with tight parametric consistency and long-term manufacturability.

Supply support for AP7341-15FS4-7 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 high-performance power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

The AP7341 series belongs to Diodes' high-PSRR, low-noise LDO product line, engineered specifically for noise-sensitive analog and RF subsystems in portable electronics where small size, efficiency, and signal purity are non-negotiable.

FAQ

What is the minimum input voltage required for AP7341-15FS4-7 to maintain regulation at 300mA?

The AP7341-15FS4-7 requires VIN ≥ (VOUT + Dropout) = 1.5V + 0.65V = 2.15V at 300mA (max dropout per datasheet). At 150mA, dropout drops to 0.50V typ, so VIN ≥ 2.0V suffices. Below 1.7V input, the device ceases regulation entirely per absolute maximum ratings.

Can the thermal pad on the X2-DFN1010-4 package be left unconnected?

No - the thermal pad must be soldered to a PCB copper area and connected to GND for effective heat dissipation. Leaving it unconnected degrades θ_JA by >50%, risking thermal shutdown above 150mA in still-air conditions. Diodes recommends a minimum 4mm² GND pour under the pad.

Does AP7341-15FS4-7 include reverse-current protection?

No - the AP7341-15FS4-7 lacks internal reverse-current blocking. If VIN falls below VOUT while enabled, current flows backward from VOUT to VIN through the pass transistor. External reverse-blocking diode or MOSFET is required in systems with multiple power domains or hot-swap scenarios.

Is an input capacitor mandatory, and what value is recommended?

Yes - a minimum 0.47µF ceramic capacitor is required between VIN and GND, placed within 2mm of the pins. This prevents input rail collapse during load transients and ensures stability. For systems with high dv/dt noise, a 1.0µF X5R/X7R ceramic is recommended per the datasheet's typical application circuit.

AP7341-15FS4-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 4-XDFN Exposed Pad

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):: 1.5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.47V @ 150mA

Current - Output:: 300mA

Current - Quiescent (Iq):: 50 µA

Current - Supply (Max):: -

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:: X2-DFN1010-4

AP7341-15FS4-7 FAQ

1.How can I place an order for AP7341-15FS4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7341-15FS4-7 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 AP7341-15FS4-7 reliable?

The price and inventory of AP7341-15FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7341-15FS4-7 is usually 5 days.

3.What payment methods are accepted for AP7341-15FS4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7341-15FS4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7341-15FS4-7?

AP7341-15FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7341-15FS4-7 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 AP7341-15FS4-7?

For technical support, including AP7341-15FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7341-15FS4-7 requirements.

6.How does Aetrix verify that AP7341-15FS4-7 is sourced from the original manufacturer or authorized distributors?

All AP7341-15FS4-7 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 AP7341-15FS4-7 meets industry standards.

7.What is the process for return or replacement of AP7341-15FS4-7?

All AP7341-15FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7341-15FS4-7, 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 AP7341-15FS4-7 part is unused and in its original packaging.

Return procedure for AP7341-15FS4-7:

1.Submit a request within 90 days.

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

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