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Diodes Incorporated AP7341D-25FS4-7
- Part No.:
- AP7341D-25FS4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 4-XDFN Exposed Pad
- Datasheet:
-
AP7341D-25FS4-7.pdf
- Description:
- IC REG LINEAR 2.5V 300MA 4DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,965
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Product details
Overview
AP7341D-25FS4-7 from Diodes Incorporated is a 2.5V fixed-output, 300mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in compact portable devices requiring stable, low-noise bias.
For engineers reviewing the AP7341D-25FS4-7 datasheet, AP7341D-25FS4-7 pinout, AP7341D-25FS4-7 application, or AP7341D-25FS4-7 equivalent, this LDO delivers high PSRR and ultra-low noise in a 1.0mm × 1.0mm X2-DFN1010-4 package with integrated enable control and thermal pad for efficient PCB thermal management.
Technical Context
The AP7341D-25FS4-7 employs a CMOS-based architecture with internal voltage reference, error amplifier, and current-limit circuitry. Its enable input (EN) provides precise on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V), and it features built-in short-circuit protection clamping output current to ~60mA during VOUT-to-GND faults.
This regulator operates across 1.7V–5.25V input range and maintains 2.5V output with dropout as low as 280mV at 150mA (TA = +25°C) and 370mV at 300mA. It supports stable operation with 1.0µF ceramic output capacitance and includes auto-discharge functionality via an internal 30Ω N-channel FET when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±1% (25°C), ±1.5% over –40°C to +85°C - ensures precision bias for sensitive analog/RF circuits |
| Max Output Current | 300mA continuous - sufficient for powering baseband processors, RF transceivers, or camera sensor ICs |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy power domains |
| Output Noise | 60µVrms (10Hz–100kHz) - minimizes phase noise impact in VCOs, PLLs, and RF front-end stages |
| Quiescent Current | 35µA typical - extends battery life in always-on or low-duty-cycle portable applications |
| Dropout Voltage | 280mV at 150mA (2.5V out) - enables regulation from single-cell Li-ion (3.0V min) or 3.3V rail with margin |
| Enable Thresholds | VIL ≤ 0.5V, VIH ≥ 1.3V - compatible with 1.8V/3.3V GPIO without level-shifting |
| Operating Temp | –40°C to +85°C ambient - qualified for industrial and consumer handheld environments |
Pinout & Package
Packaged in a 1.0mm × 1.0mm, 0.4mm height X2-DFN1010-4 with exposed thermal pad (connected to GND for optimal heat dissipation).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 - VOUT | Regulated Power Output | Delivers stable 2.5V to load; requires local 1.0µF ceramic capacitor placed adjacent to pin |
| PIN2 - GND | Analog/Digital Ground Reference | Primary return path; must be connected to low-impedance ground plane and tied to thermal pad |
| PIN3 - EN | Active-High Enable Control | Drives regulator ON (≥1.3V) or OFF (≤0.5V); floating state prohibited - tie to VIN if unused |
| PIN4 - VIN | Unregulated Input Supply | Accepts 1.7V–5.25V; requires 0.47µF ceramic decoupling capacitor placed within 2mm of pin |
| Thermal Pad | Thermal Dissipation Node | Exposed copper pad beneath package; must be soldered to ≥25mm² GND copper area for 400mW power handling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Output Noise | 60µVrms (10Hz–100kHz) - preserves signal integrity in RF receivers and high-resolution ADC references |
| High PSRR at Low Frequencies | 75dB @ 1kHz - rejects ripple from buck converter switching frequencies and their harmonics |
| Auto-Discharge Function | 30Ω internal N-FET discharges VOUT when EN = LOW - prevents residual voltage hold-up in power sequencing |
| Low Quiescent Current | 35µA typical - reduces standby power loss in battery-powered systems with frequent sleep/wake cycles |
| Wide Input Range | 1.7V–5.25V - supports direct connection to Li-ion, Li-poly, or regulated 3.3V/5V system rails |
| Fixed Accuracy Grade | ±1% at 25°C (AP7341D variant) - eliminates external resistor network calibration overhead |
Applications
| Smartphone RF Front-End | Camera Sensor Bias |
|---|---|
|
Use Scenario: Powering RF power amplifiers and low-noise amplifiers in LTE/Wi-Fi front-end modules. IC Role / Device Role / Timing Role: Provides clean, regulated 2.5V bias to minimize AM-to-PM distortion and phase noise degradation. Use Value: 75dB PSRR and 60µVrms noise directly improve EVM and adjacent channel leakage ratio (ACLR) performance. |
Use Scenario: Supplying image sensor analog core and PLL circuits in mobile camera modules. IC Role / Device Role / Timing Role: Delivers low-noise, tightly regulated 2.5V for pixel readout and clock generation circuitry. Use Value: ±1% output accuracy and <300mV dropout ensure stable operation across battery discharge curve (3.6V → 3.0V). |
| Wireless Adapter SoC Core | Portable Media Player Audio Codec |
|
Use Scenario: Biasing baseband processor I/O and memory interface rails in USB/Wi-Fi dongles. IC Role / Device Role / Timing Role: Supplies 2.5V to high-speed digital interfaces requiring low-supply-noise timing margins. Use Value: 35µA quiescent current and enable control support low-power suspend/resume states per USB 2.0 spec. |
Use Scenario: Powering stereo audio DAC/ADC and headphone amplifier in flash-based media players. IC Role / Device Role / Timing Role: Provides quiet analog supply independent of noisy digital subsystems. Use Value: Auto-discharge function prevents pop/click artifacts during playback start/stop transitions. |
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 max output, 6µA IQ, no enable pin, TO-92 package (larger footprint) | Lacks EN control and auto-discharge; unsuitable for sequenced power domains | Prefer for ultra-low-IQ legacy designs where board space and enable control are not constraints |
| Torex XC6206P252MR-G | 200mA max output, 1µA IQ, no EN pin, SOT-25 package, ±2% accuracy | Lower accuracy and current drive; no thermal pad - limited to <150mA continuous loads | Consider only for cost-sensitive, low-current sensor nodes where 2.5V tolerance >±1.5% is acceptable |
Compared with MCP1700-2502E/TO and XC6206P252MR-G, the AP7341D-25FS4-7 uniquely combines 300mA drive, ±1% accuracy, EN control, auto-discharge, and 1.0mm² footprint - making it the only option among the three qualified for RF-bias-critical, space-constrained, and power-sequenced portable designs.
Availability
AP7341D-25FS4-7 is available at Aetrix Electronics and suitable for smartphone RF supply, camera sensor bias, wireless adapter SoC core, and portable media player audio codec applications requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7341D-25FS4-7 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 RF performance, battery efficiency, and miniaturization are critical design drivers.
FAQ
What is the minimum input voltage required for AP7341D-25FS4-7 to maintain regulation?
The AP7341D-25FS4-7 requires a minimum input voltage of 1.7V, but to sustain 2.5V output under 150mA load, VIN must exceed 2.78V (2.5V + 280mV dropout). At full 300mA load, VIN must be ≥2.8V (2.5V + 300mV typical dropout) per datasheet Table 2.
Does AP7341D-25FS4-7 require an external discharge resistor?
No. The "D" suffix denotes the built-in auto-discharge version: when EN is pulled low, an internal 30Ω N-channel FET actively discharges VOUT to GND. This eliminates need for external bleed resistors and prevents voltage hold-up during power-down sequences.
Can AP7341D-25FS4-7 operate with ceramic capacitors smaller than 1.0µF?
Yes - the device is stable with ≥0.47µF ceramic output capacitance per datasheet Section 9. However, 1.0µF is recommended for optimal transient response under 300mA load steps; lower values may increase output voltage deviation during fast load changes.
How is thermal performance affected if the thermal pad is not connected to GND?
Leaving the thermal pad unconnected or floating degrades thermal resistance by >40°C/W, risking junction temperature exceedance above 125°C at >150mA load. Datasheet Figure 12 specifies RθJA = 220°C/W only when thermal pad is soldered to ≥25mm² GND copper area.
AP7341D-25FS4-7 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):
- 2.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.65V @ 300mA
- 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-25FS4-7 FAQ
1.How can I place an order for AP7341D-25FS4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7341D-25FS4-7 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-25FS4-7 reliable?
The price and inventory of AP7341D-25FS4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7341D-25FS4-7 is usually 5 days.
3.What payment methods are accepted for AP7341D-25FS4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7341D-25FS4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7341D-25FS4-7?
AP7341D-25FS4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7341D-25FS4-7 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-25FS4-7?
For technical support, including AP7341D-25FS4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7341D-25FS4-7 requirements.
6.How does Aetrix verify that AP7341D-25FS4-7 is sourced from the original manufacturer or authorized distributors?
All AP7341D-25FS4-7 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-25FS4-7 meets industry standards.
7.What is the process for return or replacement of AP7341D-25FS4-7?
All AP7341D-25FS4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7341D-25FS4-7, 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-25FS4-7 part is unused and in its original packaging.
Return procedure for AP7341D-25FS4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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