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Diodes Incorporated AP7343-295W5-7
- Part No.:
- AP7343-295W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343-295W5-7.pdf
- Description:
- IC REG LINEAR 2.95V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
AP7343-295W5-7 from Diodes Incorporated is a 300mA, 2.95V fixed-output low-dropout linear regulator with ±1% output accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). Built on CMOS process, it features enable control, thermal shutdown, and short-circuit protection - optimized for RF supply rails in portable wireless devices.
For engineers reviewing the AP7343-295W5-7 datasheet, AP7343-295W5-7 pinout, AP7343-295W5-7 application, or AP7343-295W5-7 equivalent, key selection criteria include its 1.7V–5.25V input range, 35µA quiescent current, SOT25 package footprint, and guaranteed 300mA load capability under tight thermal constraints.
Technical Context
The AP7343-295W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and CMOS pass transistor - enabling stable 2.95V regulation with minimal dropout (220mV typical at 300mA). Its enable input (EN) provides precise on/off control with defined logic thresholds (VIL ≤ 0.5V, VIH ≥ 1.3V), and internal thermal shutdown activates at +150°C with +20°C hysteresis.
Designed for high-PSRR noise-sensitive applications, it achieves 75dB ripple rejection at 1kHz and maintains stability with 1µF ceramic output capacitors. The device operates across –40°C to +85°C ambient, with junction-to-ambient thermal resistance of 179°C/W in the SOT25 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.95V ±1% - ensures stable bias for 3.0V-tolerant RF ICs without external feedback. |
| Max Output Current | 300mA - supports moderate-power RF transceivers and camera modules without derating at +85°C. |
| Input Voltage Range | 1.7V to 5.25V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and multi-cell alkaline supplies. |
| Quiescent Current | 35µA typical - extends battery life in always-on sensor or standby-mode wireless adapters. |
| PSRR @ 1kHz | 75dB - suppresses switching noise from DC/DC converters feeding adjacent analog/RF circuitry. |
| Output Noise | 60µVrms (10Hz–100kHz) - meets low-noise requirements for RF synthesizer VCO and ADC reference supplies. |
| Dropout Voltage | 220mV typical at 300mA - enables operation down to 3.17V input while maintaining 2.95V output. |
Pinout & Package
SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm) package with exposed thermal pad (EP) - requires PCB copper area connected to GND for optimal thermal dissipation (RθJA = 179°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 (VIN) | Power Input | Accepts 1.7–5.25V; requires 0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| PIN2 (GND) | Ground Reference | Primary return path for load current and internal circuitry; must connect to low-impedance ground plane. |
| PIN3 (EN) | Enable Control | Active-high logic input; drives regulator ON when ≥1.3V, OFF when ≤0.5V; must not float. |
| PIN4 (VOUT) | Regulated Output | Delivers 2.95V ±1%; requires 1µF ceramic capacitor placed within 2mm of pin and GND. |
| PIN5 (EP) | Thermal Pad | Non-electrical thermal interface; soldered to large GND copper pour to reduce junction temperature rise. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR | 75dB at 1kHz - isolates sensitive RF/analog circuits from power supply ripple without additional filtering. |
| Ultra-Low Noise | 60µVrms (10Hz–100kHz) - eliminates measurable contribution to phase noise in local oscillator supplies. |
| Low Quiescent Current | 35µA - enables >1-year battery life in BLE/Wi-Fi IoT nodes operating in deep-sleep mode. |
| Thermal Protection | +150°C shutdown with +20°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Short-Circuit Limit | ~55mA fold-back current - protects against accidental VOUT-to-GND faults without latch-up or thermal runaway. |
Applications
| RF Power Amplifier Bias | Camera Sensor Core Supply |
|---|---|
|
Use Scenario: Providing clean, stable bias to GaAs pHEMT power amplifiers in 2.4GHz/5GHz Wi-Fi modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated 2.95V to PA drain terminal, rejecting switching noise from system PMIC. Use Value: Maintains PA linearity and EVM performance by limiting supply-induced phase noise and ripple-induced gain variation. |
Use Scenario: Powering image sensor analog core and PLL circuits in smartphone front/rear cameras. IC Role / Device Role / Timing Role: Fixed-output LDO supplying 2.95V to CIS analog front-end and clock generation blocks. Use Value: Prevents fixed-pattern noise and timing jitter by suppressing broadband noise below 100kHz critical for pixel readout accuracy. |
| Wireless Adapter VDDIO | Portable Media Player Audio Codec |
|
Use Scenario: Regulating I/O supply for USB-to-WiFi/BLE bridge ICs in compact dongles and peripherals. IC Role / Device Role / Timing Role: Enable-controlled LDO powering digital I/O banks requiring fast turn-on and low standby leakage. Use Value: Enables host-driven power gating with <200µs startup time and sub-1µA shutdown current, reducing system idle power. |
Use Scenario: Supplying DAC/ADC reference and analog signal chain in portable music players and voice recorders. IC Role / Device Role / Timing Role: Ultra-low-noise LDO generating 2.95V reference rail for audio codec precision converters. Use Value: Achieves >105dB SNR by limiting integrated noise contribution to <0.01% of full-scale output voltage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-295E/TO | 250mA max output, higher 250mV dropout at 250mA, 65dB PSRR at 1kHz | Limited headroom for 300mA peak loads; less effective for RF noise suppression | Prefer for cost-sensitive, lower-current sensor nodes where 250mA suffices |
| Torex XC6210B295MR-G | 300mA output, 45µA IQ, 70dB PSRR at 1kHz, same SOT25 footprint | Slightly higher noise (75µVrms) and lower PSRR margin for demanding RF use cases | Valid drop-in for space-constrained designs where 5dB PSRR margin is acceptable |
Compared with MCP1700-295E/TO and XC6210B295MR-G, the AP7343-295W5-7 delivers superior PSRR and lower noise at full 300mA load - making it the preferred choice for RF and high-fidelity analog supply rails where spectral purity is critical.
Availability
AP7343-295W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, and wireless adapter I/O regulation requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for AP7343-295W5-7 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 solutions for power management, signal integrity, and connectivity applications.
The AP7343 series belongs to Diodes' high-PSRR, low-noise LDO portfolio - engineered specifically for noise-sensitive portable electronics including smartphones, tablets, and wireless infrastructure equipment.
FAQ
What is the minimum input voltage required for AP7343-295W5-7 to maintain regulation?
The AP7343-295W5-7 requires a minimum input voltage of 1.7V, but to sustain 2.95V output at 300mA, VIN must exceed VOUT + dropout voltage (≥3.17V typical). Below this, output voltage drops proportionally per the dropout curve in the datasheet - verified across –40°C to +85°C.
Can the EN pin be left unconnected if enable functionality is not needed?
No - the EN pin must never be left floating. If enable control is unused, it must be tied directly to VIN to ensure continuous operation. Floating EN causes undefined behavior due to internal leakage paths and may result in erratic startup or shutdown cycles.
Is an external discharge FET required when using AP7343-295W5-7?
No - the AP7343-295W5-7 is the non-discharge variant (no "D" suffix), meaning it lacks an internal output discharge path. If rapid VOUT discharge is required during shutdown, an external NMOS FET controlled by EN must be added per the application note DS37952 Section 12.
How does thermal performance differ between SOT25 and X2-DFN1010-4 packages?
In SOT25, RθJA is 179°C/W; in X2-DFN1010-4 (Type B), it is 237°C/W - meaning the SOT25 offers ~25% better natural convection cooling. This allows the AP7343-295W5-7 to deliver full 300mA at higher ambient temperatures without forced airflow or extra copper area.
AP7343-295W5-7 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):
- 2.95V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.3V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 60 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:
- SOT-25
AP7343-295W5-7 FAQ
1.How can I place an order for AP7343-295W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343-295W5-7 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 AP7343-295W5-7 reliable?
The price and inventory of AP7343-295W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343-295W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343-295W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343-295W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343-295W5-7?
AP7343-295W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343-295W5-7 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 AP7343-295W5-7?
For technical support, including AP7343-295W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343-295W5-7 requirements.
6.How does Aetrix verify that AP7343-295W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343-295W5-7 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 AP7343-295W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343-295W5-7?
All AP7343-295W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343-295W5-7, 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 AP7343-295W5-7 part is unused and in its original packaging.
Return procedure for AP7343-295W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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