My Inquiry
My Account
Diodes Incorporated AP7343D-11W5-7
- Part No.:
- AP7343D-11W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
AP7343D-11W5-7.pdf
- Description:
- IC REG LINEAR 1.1V 300MA SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7343D-11W5-7 from Diodes Incorporated is a 300mA CMOS low-dropout regulator with fixed 1.1V output, ±1% accuracy, 75dB PSRR at 1kHz, 60µVrms output noise (10Hz–100kHz), and 35µA quiescent current - designed for RF supply rails in compact portable electronics.
For engineers reviewing the AP7343D-11W5-7 datasheet, AP7343D-11W5-7 pinout, AP7343D-11W5-7 application, or AP7343D-11W5-7 equivalent, key selection criteria include dropout voltage under 300mA load (0.46V max at 1.1V output), enable-controlled shutdown, thermal shutdown at +150°C, and compatibility with 1µF ceramic input/output capacitors.
Technical Context
The AP7343D-11W5-7 integrates a precision voltage reference, error amplifier, current-limit circuit, and thermal shutdown protection within a CMOS process. Its enable input (EN) provides precise on/off control with defined logic thresholds (0–0.5V low, 1.3–5.25V high).
It delivers stable 1.1V output across –40°C to +85°C ambient, supports input voltages from 1.7V to 5.25V, and features built-in discharge functionality (denoted by "D" suffix) that actively discharges VOUT when disabled via EN pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.1V ±1% at +25°C; maintains regulation down to 1.7V input |
| Max Output Current | 300mA guaranteed continuous output; fold-back short-circuit limit ~55mA |
| PSRR | 75dB at 1kHz - suppresses ripple from noisy power rails in RF sections |
| Output Noise | 60µVrms (10Hz–100kHz) - critical for low-noise analog/RF supply domains |
| Quiescent Current | 35µA typical - enables ultra-low-power standby in battery-operated devices |
| Dropout Voltage | 0.46V max at 300mA (1.1V output, SOT25 package) - allows operation near battery end-of-life |
| Enable Thresholds | VEN(H) ≥ 1.3V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIO control |
Pinout & Package
AP7343D-11W5-7 is packaged in SOT25 (5-pin, 2.9mm × 1.6mm), with pin 4 as VIN, pin 1 as VOUT, pin 2 as GND, pin 3 as EN, and pin 5 as NC (no connection). The exposed pad (EP) is thermally optimized but not electrically connected - recommended to tie to PCB ground plane for thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 4) | Power Input | Accepts 1.7–5.25V input; requires ≥0.47µF ceramic decoupling capacitor placed adjacent to pin |
| VOUT (Pin 1) | Regulated Output | Delivers fixed 1.1V ±1%; includes internal discharge FET (enabled when EN = low) |
| GND (Pin 2) | Ground Reference | Primary return path for input/output currents; must connect to low-impedance ground plane |
| EN (Pin 3) | Enable Control | Active-high logic input; floating state prohibited - must be tied to VIN or controlled GPIO |
| NC (Pin 5) | No Connection | Not internally bonded; leave unconnected or float per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 60µVrms output noise enables clean power for RF transceivers and ADCs |
| Fast transient response | Stable with 1µF ceramic COUT; recovers within ~100µs from 1mA↔300mA load steps |
| Integrated discharge | Active VOUT discharge path (RDS(ON) ≈30Ω) ensures rapid output decay during shutdown |
| Thermal protection | Auto-shutdown at +150°C junction temperature with +20°C hysteresis prevents thermal runaway |
| Ultra-low IQ | 35µA quiescent current extends battery life in always-on sensor nodes and wearables |
Applications
| Smartphone RF Power Rail | Wireless Camera Sensor Supply |
|---|---|
Use Scenario: Powers RF front-end modules (PA, LNA, switch) in LTE/Wi-Fi smartphones where supply noise directly impacts EVM and receiver sensitivity. IC Role / Device Role / Timing Role: Primary low-noise, enable-controlled LDO delivering stable 1.1V to RF ICs during active transmit/receive cycles. Use Value: 75dB PSRR at 1kHz and 60µVrms noise prevent switching noise coupling into sensitive RF paths, maintaining >30dB ACLR. |
Use Scenario: Supplies image sensor analog core and PLL in compact wireless security cameras operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Fixed-output LDO providing regulated 1.1V with fast load transient recovery to sustain pixel readout timing integrity. Use Value: 0.46V dropout at 300mA allows operation down to 1.56V input, extending usable battery range by >12% versus higher-dropout alternatives. |
| Portable Media Player Audio Codec | Bluetooth LE Peripheral Power |
Use Scenario: Powers DAC and analog audio output stage in portable media players requiring ultra-low noise to achieve >105dB SNR. IC Role / Device Role / Timing Role: Low-noise post-regulator for audio subsystem, sequenced via EN to reduce system standby current. Use Value: 35µA quiescent current and integrated discharge eliminate residual VOUT leakage, reducing total system sleep current to <1µA. |
Use Scenario: Supplies Bluetooth 5.0 SoC (e.g., nRF52840) core and radio in coin-cell-powered trackers and beacons. IC Role / Device Role / Timing Role: Enable-gated 1.1V supply synchronized with BLE advertising interval to minimize average power. Use Value: Fast EN turn-on (<200µs) and 300mA capability support burst-mode CPU/radio operation without brownout during packet transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1102E/MB | 1.1V fixed, ±2% accuracy, 6µA IQ, no discharge FET, SOT23-5 package | Lacks active VOUT discharge; lower IQ but higher output tolerance reduces margin for precision analog loads | Prefer when lowest standby power dominates over fast shutdown decay requirements |
| Torex XC6210B112MR-G | 1.1V fixed, ±1% accuracy, 35µA IQ, discharge FET, SOT25 package, 70dB PSRR @1kHz | Slightly lower PSRR and higher 0.55V dropout at 300mA limits use in deep-battery scenarios | Choose when footprint compatibility is critical and PSRR >70dB suffices for target RF band |
Compared with MCP1703T-1102E/MB and XC6210B112MR-G, the AP7343D-11W5-7 uniquely combines ±1% accuracy, 75dB PSRR, and integrated discharge in SOT25 - making it optimal for RF-sensitive, battery-constrained designs requiring both precision regulation and controlled shutdown behavior.
Availability
AP7343D-11W5-7 is available at Aetrix Electronics and suitable for smartphone RF supplies, wireless camera sensors, portable media player audio codecs, and Bluetooth LE peripherals requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7343D-11W5-7 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 connectivity solutions for consumer, industrial, and automotive markets.
The AP7343 series targets portable and wireless applications demanding ultra-low noise, high PSRR, and minimal board space - reflecting Diodes' focus on enabling next-generation battery-powered RF and sensor systems.
FAQ
What is the function of the NC pin (Pin 5) in the SOT25 package?
Pin 5 is a no-connect terminal - not internally bonded to any die structure. It must remain unconnected in PCB layout. Unlike the exposed pad (EP), it serves no thermal or electrical purpose and should not be tied to ground or any other net.
Does AP7343D-11W5-7 require an external pull-up on the EN pin for default-on operation?
No external pull-up is required. To ensure default-on behavior, tie the EN pin directly to VIN. This satisfies the VEN(H) ≥ 1.3V threshold across the full 1.7–5.25V input range and avoids floating-state risk.
How does the built-in discharge feature affect system-level power sequencing?
The discharge FET (RDS(ON) ≈30Ω) actively pulls VOUT to GND within ~1ms after EN goes low. This eliminates hold-up time and prevents back-powering of upstream circuits, simplifying multi-rail sequencing in compact portable designs.
Can AP7343D-11W5-7 operate with only a 0.47µF input capacitor?
Yes - the datasheet specifies a minimum 0.47µF ceramic capacitor between VIN and GND. For optimal transient immunity and stability, place it within 2mm of the VIN/GND pins using wide, low-inductance traces.
AP7343D-11W5-7 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):
- 1.1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 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-11W5-7 FAQ
1.How can I place an order for AP7343D-11W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7343D-11W5-7 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-11W5-7 reliable?
The price and inventory of AP7343D-11W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7343D-11W5-7 is usually 5 days.
3.What payment methods are accepted for AP7343D-11W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7343D-11W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7343D-11W5-7?
AP7343D-11W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7343D-11W5-7 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-11W5-7?
For technical support, including AP7343D-11W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7343D-11W5-7 requirements.
6.How does Aetrix verify that AP7343D-11W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7343D-11W5-7 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-11W5-7 meets industry standards.
7.What is the process for return or replacement of AP7343D-11W5-7?
All AP7343D-11W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7343D-11W5-7, 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-11W5-7 part is unused and in its original packaging.
Return procedure for AP7343D-11W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7343D-11W5-7 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
