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Diodes Incorporated AP7343D-26W5-7
- Part No.:
- AP7343D-26W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343D-26W5-7.pdf
- Description:
- IC REG LINEAR 2.6V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,981
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Product details
Overview
AP7343D-26W5-7 from Diodes Incorporated is a 300mA, 2.6V fixed-output low-dropout linear regulator with high PSRR (75dB at 1kHz), ultra-low output noise (60µVrms, 10Hz–100kHz), and ±1% output voltage accuracy. Built on a CMOS process, it features enable control, thermal shutdown, short-circuit protection, and operates from 1.7V to 5.25V input. It targets RF supply rails in compact portable devices where noise-sensitive analog circuitry demands clean, stable bias.
For engineers reviewing the AP7343D-26W5-7 datasheet, AP7343D-26W5-7 pinout, AP7343D-26W5-7 application, or AP7343D-26W5-7 equivalent, key selection criteria include dropout voltage at 300mA (0.22–0.29V for 2.6V output), EN logic thresholds (0–0.5V low, 1.3–5.25V high), quiescent current (35–60µA), and compatibility with 1µF ceramic input/output capacitors in space-constrained layouts.
Technical Context
The AP7343D-26W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with built-in discharge functionality (indicated by "D" suffix). Its CMOS architecture enables low quiescent current and fast transient response without requiring external compensation.
It delivers regulated 2.6V output with ±1% accuracy over temperature (−40°C to +85°C) and load (0–300mA), while maintaining 75dB ripple rejection at 1kHz and thermal shutdown activation at +150°C with +20°C hysteresis - critical for reliability in battery-powered RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.6V ±1% at +25°C; ensures stable bias for 2.5V–2.7V nominal analog/RF ICs without external feedback. |
| Max Output Current | 300mA guaranteed; supports moderate-power RF amplifiers, camera ISPs, or audio codecs in handheld form factors. |
| Dropout Voltage | 0.22–0.29V at 300mA (2.6V VOUT); enables operation down to VIN = 2.82V, extending battery runtime in single-cell Li-ion systems. |
| PSRR | 75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters feeding noisy power domains. |
| Output Noise | 60µVrms (10Hz–100kHz); minimizes phase noise degradation in VCOs, LNAs, and ADC reference supplies. |
| Quiescent Current | 35–60µA; preserves battery life during standby in always-on sensor or connectivity modules. |
| Enable Thresholds | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V; compatible with 1.8V/3.3V GPIOs for precise system-level power sequencing. |
Pinout & Package
AP7343D-26W5-7 is packaged in SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm), with pin 1 (VIN) and pin 5 (VOUT) positioned diagonally to minimize PCB trace coupling. The exposed pad (EP) is thermally connected to GND for enhanced heat dissipation in high-ambient environments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 (VIN) | Power Input | Accepts 1.7–5.25V input; requires local 0.47µF ceramic decoupling capacitor placed within 2mm of this pin. |
| PIN2 (GND) | Ground Reference | Primary return path for load current and internal circuitry; must connect directly to low-impedance ground plane. |
| PIN3 (EN) | Enable Control | Active-high logic input; floating state is undefined - tie to VIN if always-on operation is required. |
| PIN4 (NC) | No Connection | Internally unconnected; must remain unconnected on PCB to avoid parasitic coupling or latch-up risk. |
| PIN5 (VOUT) | Regulated Output | Delivers 2.6V ±1%; requires 1µF ceramic output capacitor placed adjacent to this pin and GND for stability. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Discharge Path | 30Ω on-resistance between VOUT and GND when disabled (EN = low), ensuring rapid output discharge (<100µs for 1µF load) to prevent back-powering. |
| High PSRR Architecture | 75dB at 1kHz via optimized error amplifier gain and CMOS pass device; maintains clean output under noisy input conditions. |
| Low-Noise Regulation | 60µVrms noise floor achieved through low-noise bandgap reference and minimized internal thermal noise sources. |
| Thermal Protection | +150°C junction shutdown with +20°C hysteresis prevents permanent damage during sustained overload or poor heatsinking. |
| Ultra-Low IQ | 35µA typical quiescent current enables >1-year battery life in coin-cell–powered IoT sensors with periodic wake-up cycles. |
Applications
| RF Power Amplifier Bias | Camera Image Signal Processor (ISP) Core Supply |
|---|---|
|
Use Scenario: Providing clean, low-noise 2.6V bias to GaAs or SiGe RF power amplifiers in LTE/Wi-Fi front-end modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering stable VCC to PA collector/drain, rejecting switching noise from PMIC buck converters. Use Value: 60µVrms output noise prevents AM-to-PM distortion and EVM degradation in 256-QAM transmission. |
Use Scenario: Supplying core logic voltage to image signal processors in smartphone rear cameras operating at 30+ fps. IC Role / Device Role / Timing Role: High-PSRR LDO isolating ISP digital core from noisy SoC domain, enabling sub-10ns timing margins. Use Value: 75dB PSRR at 1kHz suppresses 2MHz–5MHz DC-DC ripple that would otherwise induce fixed-pattern noise in raw Bayer data. |
| Wireless Audio Codec Reference | Portable Media Player Analog Front-End |
|
Use Scenario: Generating 2.6V reference voltage for stereo audio DACs and headphone amplifiers in Bluetooth earbuds. IC Role / Device Role / Timing Role: Precision LDO acting as analog supply rail for DAC output stage and Class-AB headphone driver. Use Value: ±1% output accuracy ensures consistent THD+N performance across temperature and battery discharge cycles. |
Use Scenario: Powering analog video decoder and HDMI transmitter circuits in handheld media players with HDMI-Mini output. IC Role / Device Role / Timing Role: Low-dropout regulator supplying 2.6V to video processing ASICs requiring tight voltage tolerance. Use Value: 0.22V dropout at 300mA allows operation down to 2.82V input, extending playback time on single-cell Li-ion batteries. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2602E/MB | 250mA max output, 65dB PSRR at 1kHz, no integrated discharge path, SOT23-5 package. | Lacks auto-discharge; unsuitable where rapid VOUT decay is required to meet system reset timing. | Select when lower cost and simpler enable behavior outweigh need for discharge and higher PSRR. |
| Torex XC6210B262MR-G | 200mA max output, 70dB PSRR at 1kHz, 45µVrms noise, SOT25 package, no discharge. | Lower noise but reduced current capability; not rated for 300mA continuous loads in thermal-limited enclosures. | Prefer for ultra-low-noise audio paths where load current stays below 200mA and discharge is unnecessary. |
Compared with MCP1703T-2602E/MB and XC6210B262MR-G, AP7343D-26W5-7 uniquely combines 300mA drive, 75dB PSRR, 60µVrms noise, and integrated discharge in a thermally optimized SOT25 - making it optimal for RF and imaging subsystems demanding simultaneous high current, low noise, and controlled power-down sequencing.
Availability
AP7343D-26W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera ISP core supply, wireless audio codec reference, and portable media player analog front-end applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.
Supply support for AP7343D-26W5-7 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 is part of Diodes' high-performance LDO portfolio designed specifically for noise-sensitive portable electronics - emphasizing low quiescent current, high PSRR, and small-footprint packaging for space-constrained mobile and wireless designs.
FAQ
What is the minimum input voltage required for AP7343D-26W5-7 to regulate 2.6V at 300mA?
The minimum input voltage is determined by dropout voltage: at 300mA and 2.6V output, typical dropout is 0.22V (max 0.29V per datasheet). Therefore, VIN must be ≥ 2.82V (2.6V + 0.22V) to maintain regulation. Below this, output voltage drops linearly with input.
Does AP7343D-26W5-7 require an external discharge resistor?
No. The "D" suffix indicates integrated discharge functionality: when EN is pulled low, an internal 30Ω NMOS switch connects VOUT to GND, discharging 1µF loads in under 100µs. No external components are needed for controlled power-down.
Can AP7343D-26W5-7 be used with ceramic output capacitors smaller than 1µF?
Yes - the device is stable with ceramic capacitors as low as 0.47µF, per datasheet recommendations. However, 1µF is specified for optimal transient response and PSRR performance; reducing capacitance may increase output voltage deviation during 100mA load steps.
How does thermal performance differ between SOT25 and X2-DFN1010-4 packages for AP7343 variants?
SOT25 has θJA = 179°C/W, while X2-DFN1010-4 (Type B) has θJA = 237°C/W - meaning SOT25 offers ~25% better ambient thermal resistance due to larger copper exposure and standard leadframe design, making it preferable for higher ambient or sustained 300mA loads.
AP7343D-26W5-7 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):
- 2.6V
- 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
AP7343D-26W5-7 FAQ
1.How can I place an order for AP7343D-26W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343D-26W5-7 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 AP7343D-26W5-7 reliable?
The price and inventory of AP7343D-26W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343D-26W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343D-26W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343D-26W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343D-26W5-7?
AP7343D-26W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343D-26W5-7 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 AP7343D-26W5-7?
For technical support, including AP7343D-26W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343D-26W5-7 requirements.
6.How does Aetrix verify that AP7343D-26W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343D-26W5-7 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 AP7343D-26W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343D-26W5-7?
All AP7343D-26W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343D-26W5-7, 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 AP7343D-26W5-7 part is unused and in its original packaging.
Return procedure for AP7343D-26W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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