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

Diodes Incorporated AP7341-285FS4-7

Name: AP7341-285FS4-7
Brand: Diodes Incorporated
SKU: AP7341-285FS4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7341-285FS4-7

Manufacturer:: Diodes Incorporated

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

Package:: 4-XDFN Exposed Pad

Datasheet:: AP7341-285FS4-7.pdf

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

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7341-285FS4-7 from Diodes Incorporated is a 300mA, 2.85V fixed-output 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 devices.

For engineers reviewing the AP7341-285FS4-7 datasheet, AP7341-285FS4-7 pinout, AP7341-285FS4-7 application, or AP7341-285FS4-7 equivalent, key selection criteria include dropout voltage at 300mA (≤270mV @ V_OUT=2.85V), enable threshold compatibility (V_EN(H) ≥1.3V), thermal performance in X2-DFN1010-4, and low-noise biasing for sensitive analog/RF circuitry.

Technical Context

The AP7341-285FS4-7 employs a CMOS-based LDO architecture with integrated voltage reference, error amplifier, and current-limit protection. Its EN pin provides precise on/off control with 0.5V max V_EN(L) and 1.3V min V_EN(H), enabling direct interface with 1.8V/3.3V logic without level-shifting.

It delivers stable 2.85V output across input voltages from 1.7V to 5.25V, with dropout as low as 210mV at 150mA and 270mV at 300mA (T_A = +25°C). Short-circuit foldback limits output current to 55mA during V_OUT-to-GND faults, preventing thermal runaway.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V ±1% (±1.5% over −40°C to +85°C) - ensures stable bias for 2.8V–2.9V RF power amplifiers and analog sensors.
Max Output Current	300mA guaranteed - supports multi-rail PMIC subsystems or single-channel high-efficiency power delivery in space-constrained layouts.
PSRR	75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding RF sections.
Output Noise	60µV_RMS (10Hz–100kHz) - minimizes phase noise degradation in VCOs, LNAs, and ADC reference supplies.
Quiescent Current	35µA typical - extends battery life in always-on sensor nodes and standby modes of mobile peripherals.
Dropout Voltage	270mV max at 300mA (V_OUT = 2.85V) - enables operation from single-cell Li-ion (3.0V min) or dual-cell alkaline sources.
Enable Threshold	V_EN(H) ≥1.3V, V_EN(L) ≤0.5V - compatible with 1.8V GPIO and I²C-compatible control signals without external pull-ups.

Pinout & Package

Packaged in a 1.0mm × 1.0mm X2-DFN1010-4 with exposed thermal pad, the AP7341-285FS4-7 supports ultra-dense PCB layouts and efficient heat dissipation via GND-connected copper pour.

Pin/Terminal	Circuit Role	Design Meaning
PIN1 - VOUT	Regulated Power Output	Delivers clean 2.85V to load; requires local 1.0µF ceramic capacitor placed adjacent to pin for stability and transient response.
PIN2 - GND	Analog & Power Ground Reference	Primary return path for output current and internal circuitry; must connect directly to low-impedance ground plane to minimize noise coupling.
PIN3 - EN	Logic-Controlled Enable Input	Active-high digital control: >1.3V enables regulation, <0.5V forces shutdown (I_Q ≤1.0µA); floating state is prohibited.
PIN4 - VIN	Unregulated Input Supply	Accepts 1.7V–5.25V input; requires 0.47µF ceramic decoupling capacitor placed within 2mm of pin to suppress supply transients.

Key Features

Feature	Design Value
Ultra-low output noise	60µV_RMS (10Hz–100kHz) - preserves signal integrity in RF front-ends and precision analog signal chains.
High PSRR at audio frequencies	75dB @ 1kHz - rejects ripple from buck converters operating at 500kHz–2MHz with 10× attenuation of 100mV_PP input ripple.
Low-quiescent-current shutdown	≤1.0µA standby current - enables energy harvesting and long-life battery applications requiring microamp-level off-state leakage.
Thermally optimized package	X2-DFN1010-4 with thermal pad - achieves θ_JA ≈ 220°C/W on 2-layer JEDEC board, supporting 300mA continuous load at +85°C ambient.
Robust short-circuit protection	Foldback current limit to 55mA - prevents thermal damage during accidental V_OUT-to-GND faults without latch-up or auto-recovery oscillation.

Applications

RF Power Amplifier Bias

Camera Module Core Supply

Use Scenario: Providing clean, low-noise bias to GaAs pHEMT or SiGe HBT RF power amplifiers in LTE/Wi-Fi front-end modules.

IC Role / Device Role / Timing Role: Primary LDO delivering regulated 2.85V at up to 300mA with minimal PSK/EVM degradation under dynamic load steps.

Use Value: 60µV_RMS noise and 75dB PSRR prevent AM-to-PM conversion and maintain ACLR compliance in 5G NR transmission.

Use Scenario: Powering image signal processors (ISPs) and CIS analog front-ends in smartphone camera modules.

IC Role / Device Role / Timing Role: Fixed 2.85V supply for analog pixel readout circuits and PLL reference buffers requiring sub-100µV noise floor.

Use Value: ±1% output accuracy and <30mV load regulation ensure consistent ADC gain calibration and color fidelity across temperature.

Wireless Adapter SoC Core Rail

Portable Media Player Audio Codec Supply

Use Scenario: Supplying core logic voltage to dual-band Wi-Fi 6/Bluetooth 5.2 combo chips in USB dongles and IoT gateways.

IC Role / Device Role / Timing Role: High-PSRR LDO isolating SoC core from noisy USB 5V or battery-derived switching regulators.

Use Value: 270mV dropout at 300mA allows operation down to 3.12V input, extending runtime from partially discharged Li-ion cells.

Use Scenario: Delivering ultra-low-noise 2.85V to stereo audio DACs, headphone amplifiers, and MEMS microphone bias circuits.

IC Role / Device Role / Timing Role: Low-noise post-regulator for audio subsystems where switching regulator ripple would manifest as audible hiss or beat tones.

Use Value: 60µV_RMS noise meets THD+N <−105dB requirements for premium portable audio playback.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1700-285E/TO	250mA max output, 6µA quiescent current, TO-92 package (larger footprint, higher θ_JA)	Suitable for low-power sensor nodes but not RF PA bias due to lower current and no enable pin	Select when ultra-low IQ dominates over size and enable functionality
Torex XC6210B285MR-G	200mA output, 1.0µA IQ, SOT-25 package; lacks PSRR spec >65dB and noise data beyond 10kHz	Valid for static logic rails but unverified for RF-sensitive loads requiring broadband noise suppression	Select only for cost-sensitive non-RF applications where 200mA suffices and PSRR/noise specs are secondary

Compared with MCP1700-285E/TO and XC6210B285MR-G, the AP7341-285FS4-7 uniquely combines 300mA drive, 75dB PSRR, 60µV_RMS noise, and enable control in a 1.0mm² DFN - making it the only viable choice for space-constrained, noise-critical RF and imaging subsystems.

Availability

AP7341-285FS4-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera module core supply, wireless adapter SoC core rail, and portable media player audio codec supply requiring stable component supply across production lifecycles.

Supply support for AP7341-285FS4-7 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-performance power management, signal integrity, and protection solutions for consumer, industrial, and communications markets.

The AP7341 series belongs to Diodes' high-PSRR, low-noise LDO portfolio, engineered specifically for noise-sensitive analog and RF subsystems in battery-powered portable electronics where size, efficiency, and signal purity are critical.

FAQ

What is the minimum input voltage required for AP7341-285FS4-7 to regulate 2.85V at 300mA?

The minimum input voltage is determined by dropout: at 300mA and +25°C, max dropout is 270mV, so VIN(min) = 2.85V + 0.27V = 3.12V. At −40°C to +85°C, worst-case dropout rises to 300mV, requiring VIN ≥ 3.15V for full-load regulation across temperature.

Can AP7341-285FS4-7 be used without connecting the EN pin?

No - the EN pin must not be left floating. To maintain continuous operation, tie EN directly to VIN. Leaving it unconnected risks undefined behavior, potential oscillation, or unintended shutdown due to noise coupling into the high-impedance enable input.

Is an external discharge FET required for AP7341-285FS4-7?

No - the AP7341-285FS4-7 is the non-discharge version (no "D" suffix), meaning it lacks an internal output discharge path. If fast VOUT decay is needed during shutdown, an external 30Ω resistor or dedicated discharge FET must be added between VOUT and GND.

What is the recommended PCB layout practice for thermal management?

Connect the exposed thermal pad to a ≥40mm² GND copper pour using ≥4 thermal vias (0.3mm diameter) to inner ground planes. Avoid routing signal traces under the device. Place CIN (0.47µF) and COUT (1.0µF) within 2mm of their respective pins using 0402 or smaller case sizes.

AP7341-285FS4-7 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

AP7341-285FS4-7 FAQ

1.How can I place an order for AP7341-285FS4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7341-285FS4-7 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 AP7341-285FS4-7 reliable?

The price and inventory of AP7341-285FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7341-285FS4-7 is usually 5 days.

3.What payment methods are accepted for AP7341-285FS4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7341-285FS4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7341-285FS4-7?

AP7341-285FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7341-285FS4-7 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 AP7341-285FS4-7?

For technical support, including AP7341-285FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7341-285FS4-7 requirements.

6.How does Aetrix verify that AP7341-285FS4-7 is sourced from the original manufacturer or authorized distributors?

All AP7341-285FS4-7 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 AP7341-285FS4-7 meets industry standards.

7.What is the process for return or replacement of AP7341-285FS4-7?

All AP7341-285FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7341-285FS4-7, 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 AP7341-285FS4-7 part is unused and in its original packaging.

Return procedure for AP7341-285FS4-7:

1.Submit a request within 90 days.

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

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