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

Diodes Incorporated AP7341D-285FS4-7

Name: AP7341D-285FS4-7
Brand: Diodes Incorporated
SKU: AP7341D-285FS4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7341D-285FS4-7

Manufacturer:: Diodes Incorporated

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

Package:: 4-XDFN Exposed Pad

Datasheet:: AP7341D-285FS4-7.pdf

Description:: IC REG LINEAR 2.85V 300MA 4DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7341D-285FS4-7 from Diodes Incorporated is a 300mA, 2.85V fixed-output low-dropout linear regulator in X2-DFN1010-4 package, featuring ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µV_rms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply and portable media applications requiring stable, low-noise bias.

For engineers reviewing the AP7341D-285FS4-7 datasheet, AP7341D-285FS4-7 pinout, AP7341D-285FS4-7 application, or AP7341D-285FS4-7 equivalent, key selection criteria include dropout voltage at 300mA (≤270mV @ V_OUT=2.85V), enable threshold compatibility (V_EN(H) ≥1.3V), thermal performance under 85°C ambient, and ceramic capacitor stability with ESR <100mΩ.

Technical Context

The AP7341D-285FS4-7 implements 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 high/low thresholds (1.3–5.25V valid high; 0–0.5V valid low), and it includes fold-back short-circuit protection clamping output current to ~55mA during V_OUT-to-GND fault.

It operates across 1.7V–5.25V input range while maintaining 2.85V output with ±1.5% accuracy over –40°C to +85°C. The device achieves low noise via internal filtering and high PSRR through optimized error amplifier gain and power-stage design - critical for powering sensitive RF and analog circuits without coupling switching noise.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V ±1% at +25°C; ±1.5% over full temperature range - ensures stable bias for 2.8V–3.0V logic and RF ICs.
Max Output Current	300mA guaranteed - supports moderate-power subsystems like camera ISPs or Bluetooth baseband without external boost.
PSRR	75dB at 1kHz - suppresses ripple from noisy DC-DC converters feeding the LDO input, preserving signal integrity in RF chains.
Output Noise	60µV_rms (10Hz–100kHz) - minimizes phase noise contribution when powering VCOs, LNAs, or ADC references.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes or standby modes of portable devices.
Dropout Voltage	270mV max at 300mA output - enables operation from single-cell Li-ion (3.0V min) or 3.3V rails with margin.
Enable Threshold	V_EN(H) ≥1.3V, V_EN(L) ≤0.5V - compatible with 1.8V/3.3V GPIOs without level-shifting.

Pinout & Package

X2-DFN1010-4 package: 1.0mm × 1.0mm footprint, 0.4mm height, thermal pad exposed on bottom for PCB heat sinking. Requires solder paste stencil aperture matching Diodes' recommended pad layout (0.65mm pitch, 0.25mm trace width).

Pin/Terminal	Circuit Role	Design Meaning
PIN1 - VOUT	Regulated power output	Connects directly to load; requires low-ESR ceramic capacitor (≥1.0µF) placed within 2mm for stability and transient response.
PIN2 - GND	Power ground reference	Must tie to solid ground plane; shares thermal pad connection - critical for noise rejection and thermal dissipation.
PIN3 - EN	Active-high enable control	Must not float; pull to VIN for always-on operation or drive with clean digital signal; leakage <±1.0µA ensures low standby drain.
PIN4 - VIN	Unregulated input supply	Accepts 1.7–5.25V; requires 0.47µF ceramic decoupling capacitor placed adjacent to pin to suppress supply glitches.

Key Features

Feature	Design Value
Ultra-low output noise	60µV_rms (10Hz–100kHz) - enables direct powering of RF front-end components without additional filtering.
High PSRR at low frequency	75dB @ 1kHz - rejects switching noise from upstream buck converters operating near audio band.
Low-quiescent-current shutdown	10nA standby current (ISTANDBY ≤1.0µA) - preserves battery charge during system sleep states.
Thermally enhanced DFN	X2-DFN1010-4 with exposed thermal pad - achieves 220°C/W θ_JA on 2-layer board, supporting 300mA continuous at +85°C ambient.
Integrated short-circuit protection	Fold-back current limit (~55mA) - prevents thermal runaway during output faults without external current-sense circuitry.

Applications

Smartphone RF Power Supply

Portable Camera Module

Use Scenario: Providing clean 2.85V bias to LTE/5G power amplifiers and LNA stages in multi-band RF transceivers.

IC Role / Device Role / Timing Role: Low-noise post-regulator isolating PA bias from noisy PMIC outputs.

Use Value: 60µV_rms noise and 75dB PSRR prevent AM-to-PM distortion and EVM degradation in transmit paths.

Use Scenario: Powering CIS image sensors and ISP cores in compact smartphone camera modules.

IC Role / Device Role / Timing Role: Stable 2.85V supply for analog pixel readout and ADC reference voltage generation.

Use Value: ±1% output accuracy and low tempco (±30ppm/°C) maintain consistent exposure linearity across operating temperature.

Wireless Audio Adapter

Bluetooth LE Sensor Node

Use Scenario: Delivering regulated 2.85V to DACs, headphone amplifiers, and codec analog sections in USB-C audio dongles.

IC Role / Device Role / Timing Role: Low-noise local regulator decoupling audio signal chain from digital SoC supply.

Use Value: 35µA quiescent current extends playback time; 270mV dropout allows operation down to 3.12V battery voltage.

Use Scenario: Supplying 2.85V to BLE SoC radios and environmental sensors in coin-cell-powered IoT nodes.

IC Role / Device Role / Timing Role: Enable-controlled LDO enabling deep-sleep mode with sub-µA system leakage.

Use Value: ISTANDBY ≤1.0µA and fast enable response (<10µs) minimize wake-up latency and energy per transmission.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700T-285I/TT (Microchip)	250mA max output, 6µV_rms noise (10Hz–100kHz), no enable pin - requires external logic for shutdown.	Lacks EN control; lower current rating limits use in PA bias or multi-sensor loads.	Select only if enable functionality is unnecessary and load current stays ≤250mA.
Torex XC6206P285MR-G (Torex)	150mA max output, 40µV_rms noise, 70dB PSRR @ 1kHz, SOT-23-5 package - larger footprint and lower current capability.	Suitable for ultra-low-noise sensor bias but cannot support 300mA RF loads.	Prefer for space-constrained analog sensor rails where current demand is <150mA and noise is paramount.

Compared with MCP1700T-285I/TT and XC6206P285MR-G, the AP7341D-285FS4-7 uniquely balances 300mA drive, 60µV_rms noise, and integrated enable in a 1.0mm² DFN - making it optimal for compact, high-performance RF and imaging subsystems where both current and spectral purity matter.

Availability

AP7341D-285FS4-7 is available at Aetrix Electronics and suitable for smartphone RF supply, portable camera modules, wireless audio adapters, and Bluetooth LE sensor nodes requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for AP7341D-285FS4-7 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-reliability 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 portable electronics where clean, efficient local regulation is essential to system-level RF and audio performance.

FAQ

What is the minimum input voltage required for AP7341D-285FS4-7 to maintain regulation?

The AP7341D-285FS4-7 requires a minimum input voltage of 1.7V, but to sustain 2.85V output at 300mA, VIN must exceed V_OUT + dropout voltage. At 300mA and +25°C, dropout is ≤270mV, so VIN ≥3.12V is recommended for full-load operation with margin.

Does AP7341D-285FS4-7 include reverse-current protection or output discharge?

Yes - the "D" suffix indicates the discharge version: when EN is pulled low, an internal 30Ω NMOS switch connects VOUT to GND, discharging output capacitance rapidly. This prevents residual voltage from interfering with downstream logic sequencing during power-down.

Can AP7341D-285FS4-7 be used with tantalum output capacitors?

No - the AP7341D-285FS4-7 is optimized for ceramic capacitors with ESR <100mΩ. Tantalum capacitors typically exhibit higher ESR and risk instability or oscillation; Diodes specifies stability only with ceramic COUT ≥1.0µF placed within 2mm of VOUT/GND pins.

How does thermal performance change when the thermal pad is left unconnected?

Leaving the thermal pad unconnected increases junction-to-ambient thermal resistance by ~90°C/W versus proper GND-connected copper area. At 300mA and +85°C ambient, this can cause junction temperature to exceed 150°C - triggering thermal shutdown or reducing reliability. Diodes mandates thermal pad connection to GND plane for rated performance.

AP7341D-285FS4-7 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):: 2.85V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.27V @ 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

AP7341D-285FS4-7 FAQ

1.How can I place an order for AP7341D-285FS4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7341D-285FS4-7 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 AP7341D-285FS4-7 reliable?

The price and inventory of AP7341D-285FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7341D-285FS4-7 is usually 5 days.

3.What payment methods are accepted for AP7341D-285FS4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7341D-285FS4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7341D-285FS4-7?

AP7341D-285FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7341D-285FS4-7 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 AP7341D-285FS4-7?

For technical support, including AP7341D-285FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7341D-285FS4-7 requirements.

6.How does Aetrix verify that AP7341D-285FS4-7 is sourced from the original manufacturer or authorized distributors?

All AP7341D-285FS4-7 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 AP7341D-285FS4-7 meets industry standards.

7.What is the process for return or replacement of AP7341D-285FS4-7?

All AP7341D-285FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7341D-285FS4-7, 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 AP7341D-285FS4-7 part is unused and in its original packaging.

Return procedure for AP7341D-285FS4-7:

1.Submit a request within 90 days.

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

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