My Inquiry
My Account
Diodes Incorporated AP7347D-10W5-7
- Part No.:
- AP7347D-10W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347D-10W5-7.pdf
- Description:
- LDO CMOS LOWCURR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,631
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7347D-10W5-7 from Diodes Incorporated is a 500mA, 1.0V fixed-output low-dropout regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). Built on CMOS process, it integrates enable control, thermal shutdown, and short-circuit protection, and is optimized for noise-sensitive automotive power rails and portable equipment requiring stable low-noise bias.
For engineers reviewing the AP7347D-10W5-7 datasheet, AP7347D-10W5-7 pinout, AP7347D-10W5-7 application, or AP7347D-10W5-7 equivalent, this LDO delivers high PSRR, ultra-low quiescent current (60µA), and guaranteed 500mA output in SOT25 package - critical for battery-powered systems and automotive infotainment subsystems where supply rail integrity directly impacts ADC/SerDes performance.
Technical Context
The AP7347D-10W5-7 employs a CMOS-based error amplifier with internal voltage reference and current-limit circuitry to regulate output under line/load transients. Its architecture supports fast enable turn-on/turn-off response (≤200µs) and includes auto-discharge via integrated N-channel MOSFET (RON = 30Ω) when disabled.
It operates across 1.7V–5.5V input range with dropout voltage as low as 0.45V at 500mA (for VOUT ≥ 2.1V), and features thermal shutdown at +170°C with +20°C hysteresis. The device meets AEC-Q100 stress test requirements in its automotive-grade variant (AP7347DQ), though this specific part (W5 package) is industrial-grade.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.0V ±1% - ensures precise biasing for 1.0V-core logic and low-voltage sensors without external feedback network. |
| Max Output Current | 500mA - sufficient to power multiple SoC I/O domains or RF front-end ICs from single LDO stage. |
| PSRR | 75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy 3.3V/5V rails. |
| Output Noise | 60µVrms (10Hz–100kHz) - enables clean analog supply for precision ADCs, audio codecs, and PLL VCOs. |
| Quiescent Current | 60µA typical - extends battery life in always-on monitoring circuits (e.g., CAN wake-up receivers, door module sensors). |
| Dropout Voltage | 0.45V at 500mA (VOUT = 1.0V) - allows operation from partially discharged Li-ion cells (≥1.45V) while maintaining regulation. |
| Enable Threshold | VEN(H) ≥ 1.25V, VEN(L) ≤ 0.5V - compatible with 1.8V/3.3V GPIOs without level-shifting. |
Pinout & Package
SOT25 (Type A1) package: 5-pin surface-mount, 2.9mm × 2.8mm footprint, 1.45mm height, with exposed pad not present. Thermal resistance θJA = 140°C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VIN | Main input power pin; requires ≥1µF ceramic decoupling capacitor placed adjacent to pin to suppress high-frequency ripple. |
| 2 | EN | Active-high enable; must be driven to ≥1.25V to activate regulator; floating state is undefined and prohibited. |
| 3 | GND | Analog/digital ground reference; connects to PCB ground plane to minimize noise coupling and thermal impedance. |
| 4 | VOUT | Regulated 1.0V output; requires ≥1µF ceramic output capacitor near pin to ensure stability and transient response. |
| 5 | NC | No-connect terminal; internally unconnected; recommended to tie to GND for improved thermal dissipation and EMI shielding. |
Key Features
| Feature | Design Value |
|---|---|
| High PSRR (75dB @ 1kHz) | Enables co-location with noisy DC/DC converters without dedicated filtering stages, reducing BOM count and board area. |
| Low 60µVrms output noise | Eliminates need for post-LDO ferrite beads or LC filters in sensitive analog signal chains (e.g., camera ISP power, MEMS sensor bias). |
| Auto-discharge function | Integrates 30Ω N-channel FET to discharge VOUT when disabled, preventing residual voltage from interfering with system power sequencing. |
| ±1% output accuracy over -40°C to +125°C | Guarantees reliable operation of 1.0V core logic across full automotive temperature range without calibration. |
| Thermal shutdown with 20°C hysteresis | Prevents latch-up during sustained overload; automatic recovery after cooling avoids manual reset requirement in embedded systems. |
Applications
| Automotive Infotainment Power | Portable Medical Sensor Bias |
|---|---|
Use Scenario: Supplying 1.0V core voltage to DSP and audio codec in head unit with shared 3.3V buck converter rail. IC Role / Device Role / Timing Role: Low-noise post-regulator providing clean, sequenced 1.0V domain independent of upstream switching noise. Use Value: 75dB PSRR rejects 1MHz–10MHz ripple from buck converter, eliminating audible noise in speaker output and jitter in I²S clock recovery. |
Use Scenario: Powering ultra-low-power biosignal amplifiers and 16-bit SAR ADC in wearable ECG patch. IC Role / Device Role / Timing Role: Primary analog supply LDO with minimal self-noise contribution to signal chain SNR budget. Use Value: 60µVrms noise adds <0.1 LSB error to 16-bit ADC full-scale range, preserving diagnostic resolution without additional filtering. |
| Industrial PLC I/O Module | Smart Home Hub MCU Core |
Use Scenario: Regulating 1.0V for isolated microcontroller and CAN transceiver in DIN-rail mounted controller. IC Role / Device Role / Timing Role: Enable-controlled local regulator enabling deep-sleep mode with <1µA system standby current. Use Value: 60µA quiescent current and 0.01µA shutdown current reduce annual energy consumption by >30% vs. legacy LDOs in always-on monitoring nodes. |
Use Scenario: Delivering 1.0V core supply to dual-core ARM Cortex-M7 in voice-controlled smart speaker hub. IC Role / Device Role / Timing Role: High-current LDO supporting burst-mode CPU loads up to 500mA during speech processing. Use Value: 0.45V dropout at 500mA allows direct regulation from 1.45V LiPo cell, extending runtime by 12% compared to 1.2V LDO alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-1002E/MB | 1.0V fixed, 250mA output, 6µA IQ, no enable pin, 65dB PSRR @ 1kHz | Lacks enable control and auto-discharge; lower current rating limits use in multi-peripheral MCU cores. | Select only for space-constrained, ultra-low-IQ applications where 250mA suffices and enable sequencing is unnecessary. |
| Torex XC6210B102MR-G | 1.0V fixed, 500mA, 1.2µA IQ, enable pin, 70dB PSRR @ 1kHz, 40µVrms noise | Lower noise but no auto-discharge; smaller USP-6B package lacks wettable flank for AOI inspection. | Prefer for ultra-low-noise medical sensors where discharge is handled externally, and automated optical inspection is not required. |
Compared with MCP1703T-1002E/MB and XC6210B102MR-G, the AP7347D-10W5-7 uniquely combines 500mA drive, 75dB PSRR, auto-discharge, and SOT25 wettable flank - making it optimal for automotive-qualified production where reliability, noise immunity, and manufacturability are jointly prioritized.
Availability
AP7347D-10W5-7 is available at Aetrix Electronics and suitable for automotive infotainment systems, portable medical devices, industrial PLC I/O modules, and smart home hubs requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for AP7347D-10W5-7 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, with design centers in Asia, Europe, and the U.S., and manufacturing in China, Taiwan, and the Philippines.
The AP7347D belongs to Diodes' high-PSRR, low-noise LDO family targeting noise-sensitive applications in automotive, industrial, and portable electronics - designed specifically to replace legacy regulators where switching noise rejection and thermal robustness are critical.
FAQ
What is the minimum input voltage required for AP7347D-10W5-7 to maintain 1.0V output at 500mA?
The minimum input voltage is 1.45V, derived from the 0.45V dropout voltage specification at 500mA load and 1.0V nominal output. This allows operation from partially discharged single-cell Li-ion batteries (down to ~1.45V) while sustaining full-rated current and regulation accuracy.
Does AP7347D-10W5-7 require an external pull-up resistor on the EN pin?
No external pull-up is required. When enable functionality is unused, the EN pin must be tied directly to VIN to ensure continuous operation. Floating EN is strictly prohibited per datasheet - it may cause erratic startup, oscillation, or increased quiescent current due to undefined logic state.
Can AP7347D-10W5-7 be used in automotive applications?
This specific part (AP7347D-10W5-7) is rated for industrial temperature range (–40°C to +125°C ambient) and is not AEC-Q100 qualified. For automotive use, Diodes offers the AP7347DQ variant - identical electrical specs but with extended qualification, enhanced ESD (±8kV HBM), and automotive-specific traceability and lot control.
What is the purpose of the NC pin on the SOT25 package?
Pin 5 is a no-connect terminal with no internal connection. It is recommended to connect it to GND on the PCB to increase copper area for thermal dissipation and improve EMI shielding - but it must not be used as a functional ground path or current return node.
AP7347D-10W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.95V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 125 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (1kHz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- W-DFN2020-6 (SWP) (Type A1)
AP7347D-10W5-7 FAQ
1.How can I place an order for AP7347D-10W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347D-10W5-7 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 AP7347D-10W5-7 reliable?
The price and inventory of AP7347D-10W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347D-10W5-7 is usually 5 days.
3.What payment methods are accepted for AP7347D-10W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347D-10W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347D-10W5-7?
AP7347D-10W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347D-10W5-7 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 AP7347D-10W5-7?
For technical support, including AP7347D-10W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347D-10W5-7 requirements.
6.How does Aetrix verify that AP7347D-10W5-7 is sourced from the original manufacturer or authorized distributors?
All AP7347D-10W5-7 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 AP7347D-10W5-7 meets industry standards.
7.What is the process for return or replacement of AP7347D-10W5-7?
All AP7347D-10W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347D-10W5-7, 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 AP7347D-10W5-7 part is unused and in its original packaging.
Return procedure for AP7347D-10W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7347D-10W5-7 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
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.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…
Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…
Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …
Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.
Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…
