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Diodes Incorporated AP7343D-16W5-7
- Part No.:
- AP7343D-16W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343D-16W5-7.pdf
- Description:
- IC REG LINEAR 1.6V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,782
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Product details
Overview
AP7343D-16W5-7 from Diodes Incorporated is a 300mA low-dropout linear regulator with fixed 1.6V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and ultra-low 35µA quiescent current. It features CMOS-based architecture, enable control, thermal shutdown, and short-circuit protection-designed for RF supply rails in compact portable electronics.
For engineers reviewing the AP7343D-16W5-7 datasheet, AP7343D-16W5-7 pinout, AP7343D-16W5-7 application, or AP7343D-16W5-7 equivalent, key selection criteria include dropout voltage at 300mA (0.35–0.44V for 1.6V VOUT), EN logic thresholds (0.5V low / 1.3V high), thermal resistance (179°C/W in SOT25), and discharge functionality enabled by the "D" suffix.
Technical Context
The AP7343D-16W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with built-in auto-discharge path. Its CMOS process enables low RDS(ON) and stable operation with 1µF ceramic output capacitors.
It operates across 1.7V–5.25V input range while maintaining 1.6V output under load transients up to 300mA, with fast turn-on/turn-off response and guaranteed thermal shutdown at +150°C (20°C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.6V ±1% at +25°C; ensures stable bias for low-voltage RF ICs and memory interfaces. |
| Max Output Current | 300mA guaranteed; supports power delivery to baseband processors and camera sensor modules. |
| PSRR | 75dB at 1kHz; suppresses switching noise from PMICs or DC-DC converters feeding adjacent rails. |
| Output Noise | 60µVrms (10Hz–100kHz); preserves signal integrity in analog front-ends and ADC reference supplies. |
| Quiescent Current | 35µA typical; extends battery life in always-on sensor nodes and standby-mode peripherals. |
| Dropout Voltage | 0.35–0.44V at 300mA (1.6V VOUT); enables regulation from single-cell Li-ion (3.0V min) down to ~2.0V input. |
| Enable Thresholds | VEN(HI) ≥ 1.3V, VEN(LO) ≤ 0.5V; compatible with 1.8V/3.3V GPIO without level-shifting. |
Pinout & Package
AP7343D-16W5-7 is packaged in SOT25 (5-pin, 2.9mm × 1.6mm × 1.1mm), featuring exposed pad for thermal enhancement. Pin 4 is NC (no connection); pin 5 is VOUT - consistent with top-view pin numbering per DS37952 Rev. 12-2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PIN1 (SOT25) | VIN | Main input power rail; requires local 0.47µF ceramic decoupling capacitor placed adjacent to pin. |
| PIN2 (SOT25) | GND | Power ground reference; must connect directly to PCB ground plane to minimize impedance and EMI. |
| PIN3 (SOT25) | EN | Active-high enable; floating state is prohibited-tie to VIN if always-on operation is required. |
| PIN4 (SOT25) | NC | No internal connection; leave unconnected or float-do not tie to any net. |
| PIN5 (SOT25) | VOUT | Regulated 1.6V output; route with low-inductance trace to load and place 1µF ceramic capacitor within 2mm. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge function | Internal NMOS discharge path (30Ω typical) rapidly bleeds VOUT when EN = low-prevents residual voltage from interfering with system reset sequencing. |
| Thermal shutdown with hysteresis | Triggers at +150°C junction temperature and releases at +130°C-avoids thermal cycling during sustained high-power operation. |
| Low-noise, high-PSRR architecture | 75dB ripple rejection at 1kHz and 60µVrms noise enable clean power for RF transceivers and high-resolution ADCs. |
| Ultra-low IQ operation | 35µA quiescent current allows >10-year battery life in coin-cell-powered IoT sensors operating at µA average load. |
| Robust short-circuit protection | Limits output current to ~55mA during VOUT-to-GND fault-prevents thermal runaway without latch-up or external current sensing. |
Applications
| RF Power Amplifier Bias | Camera Sensor Core Supply |
|---|---|
|
Use Scenario: Providing stable 1.6V bias to GaAs pHEMT driver stages in 4G/5G front-end modules. IC Role / Device Role / Timing Role: Low-noise LDO delivering regulated voltage with minimal phase noise contribution to PA output spectrum. Use Value: 75dB PSRR suppresses coupling from nearby DC-DC converters, reducing adjacent-channel leakage ratio (ACLR) degradation by >3dB. |
Use Scenario: Powering CIS image sensor digital core logic in smartphone main cameras. IC Role / Device Role / Timing Role: Primary 1.6V supply enabling low-power mode transitions and precise timing synchronization between ISP and sensor interface. Use Value: 35µA quiescent current reduces standby power by 40% vs. legacy LDOs, extending capture-ready duration in always-on vision systems. |
| Wireless Adapter Baseband | Portable Media Player Audio Codec |
|
Use Scenario: Supplying 1.6V to Wi-Fi/BT SoC baseband processors in USB dongles and embedded modules. IC Role / Device Role / Timing Role: Enable-controlled LDO supporting dynamic power gating during sleep/wake cycles per IEEE 802.11 power-save modes. Use Value: Auto-discharge (enabled by "D" suffix) clears VOUT within 100µs after EN deassertion-ensuring clean reset of baseband logic on wake-up. |
Use Scenario: Delivering ultra-low-noise 1.6V to stereo audio DACs and headphone amplifiers in DAPs. IC Role / Device Role / Timing Role: Post-regulator for noise-sensitive analog signal chain, placed downstream of buck converter. Use Value: 60µVrms output noise achieves >105dB SNR in 24-bit audio playback-meeting Hi-Res Audio certification requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361D-16SA-7 | Higher output current (600mA), same 1.6V ±1% accuracy, but larger SOT89-5 package and higher 65µA IQ. | Better suited for thermally constrained designs needing higher current headroom, e.g., multi-core SoCs. | Select when peak load exceeds 300mA or board layout permits larger footprint; avoid if space or IQ are critical. |
| MCP1700-1602E/TO | Same 1.6V output and 250mA rating, but only 60dB PSRR at 1kHz and no auto-discharge; TO-92 package. | Targeted at cost-sensitive, non-RF consumer devices where discharge timing and noise performance are secondary. | Choose for legacy through-hole assembly or low-complexity applications-reject for RF or fast-wake systems requiring discharge. |
Compared with AP7343D-16W5-7, AP7361D-16SA-7 trades smaller size and lower IQ for higher current capability, while MCP1700-1602E/TO sacrifices PSRR, noise, and discharge functionality for cost and package simplicity-making AP7343D-16W5-7 optimal for space-constrained, noise-sensitive, enable-driven portable RF systems.
Availability
AP7343D-16W5-7 is available at Aetrix Electronics and suitable for RF power amplifier bias, camera sensor core supply, wireless adapter baseband, and portable media player audio codec applications requiring stable component supply, automotive-grade traceability, and long-term lifecycle support.
Supply support for AP7343D-16W5-7 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 product line-engineered specifically for noise-sensitive portable electronics including smartphones, tablets, and wireless communication modules.
FAQ
What is the purpose of the NC pin (PIN4) in the SOT25 package?
PIN4 is a no-connect terminal with no internal bond wire or silicon connection. It must remain unconnected in PCB layout-neither tied to GND nor routed to any net. This pin exists solely for mechanical symmetry and thermal pad alignment in the SOT25 mold compound; connecting it risks parasitic coupling or solder bridging.
Does the "D" in AP7343D-16W5-7 indicate automotive qualification?
No-the "D" suffix denotes integrated auto-discharge functionality, not AEC-Q100 qualification. The automotive-grade variant is the AP7343Q series, documented separately. AP7343D-16W5-7 is rated for –40°C to +85°C ambient operation and meets industrial reliability standards, but lacks automotive-specific stress testing and PPAP documentation.
Can AP7343D-16W5-7 operate with only a 1µF output capacitor?
Yes-AP7343D-16W5-7 is internally compensated and stable with ≥1µF ceramic output capacitors (X5R/X7R, 0402 or larger). The datasheet confirms stability across 0.47µF–10µF range; using 1µF minimizes board area while maintaining <1% output deviation during 300mA load steps and <100µs recovery time.
How does thermal performance differ between SOT25 and X2-DFN1010-4 packages?
SOT25 offers lower θJA (179°C/W vs. 237°C/W for X2-DFN1010-4) due to its larger copper leadframe and exposed pad connection. In a standard JEDEC 2-layer board, SOT25 delivers ~20% better power dissipation capability-enabling 300mA continuous operation at +70°C ambient without derating, whereas X2-DFN1010-4 requires thermal relief or airflow above +55°C.
AP7343D-16W5-7 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):
- 1.6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.44V @ 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-16W5-7 FAQ
1.How can I place an order for AP7343D-16W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343D-16W5-7 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-16W5-7 reliable?
The price and inventory of AP7343D-16W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343D-16W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343D-16W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343D-16W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343D-16W5-7?
AP7343D-16W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343D-16W5-7 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-16W5-7?
For technical support, including AP7343D-16W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343D-16W5-7 requirements.
6.How does Aetrix verify that AP7343D-16W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343D-16W5-7 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-16W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343D-16W5-7?
All AP7343D-16W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343D-16W5-7, 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-16W5-7 part is unused and in its original packaging.
Return procedure for AP7343D-16W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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