My Inquiry
My Account
Diodes Incorporated AP7347D-15FDZW-7B
- Part No.:
- AP7347D-15FDZW-7B
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
AP7347D-15FDZW-7B.pdf
- Description:
- LDO CMOS LOWCURR W-DFN2020-6 T&R
- Quantity:
- Payment:
- Shipping:
Inventory:4,983
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AP7347D-15FDZW-7B from Diodes Incorporated is a 1.5V fixed-output, 500mA low-dropout linear regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µVrms output noise (10Hz–100kHz). It features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality. Designed for noise-sensitive automotive and portable electronics, it operates from 1.7V to 5.5V input and delivers stable 1.5V power to microcontrollers, sensors, and RF circuitry.
For engineers reviewing the AP7347D-15FDZW-7B datasheet, AP7347D-15FDZW-7B pinout, AP7347D-15FDZW-7B application, or AP7347D-15FDZW-7B equivalent, key selection criteria include its 0.55V typical dropout at 500mA (for 1.5V output), 60µA quiescent current, W-DFN2020-6 wettable flank package for automated optical inspection, and automotive-grade thermal performance up to +125°C ambient.
Technical Context
The AP7347D-15FDZW-7B integrates a CMOS-based error amplifier, precision voltage reference, current-limit circuit, and NMOS pass transistor with auto-discharge path. Its enable input supports active-high logic control with defined thresholds (VEN(H) ≥ 1.25V, VEN(L) ≤ 0.5V) and <1µA leakage.
It achieves high PSRR via internal compensation and low-noise biasing, with ripple rejection maintained across 10Hz–1MHz. The device includes foldback current limiting (180mA short-circuit clamp) and thermal shutdown at +170°C with +20°C hysteresis, ensuring robust operation under transient overload and thermal stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5V ±1% (guaranteed over -40°C to +125°C junction temperature) |
| Max Output Current | 500mA continuous (with thermal derating above +85°C ambient in W-DFN2020-6) |
| Dropout Voltage | 0.55V typical at 500mA (enables 1.5V output from 2.05V input) |
| PSRR | 75dB at 1kHz (suppresses switching noise from upstream DC/DC converters) |
| Output Noise | 60µVrms (10Hz–100kHz bandwidth; critical for ADC reference and RF LNA biasing) |
| Quiescent Current | 60µA typical (enables >1-year battery life in always-on sensor nodes) |
| Enable Thresholds | VEN(H) = 1.25V min, VEN(L) = 0.5V max (compatible with 1.8V/3.3V GPIO) |
| Thermal Resistance | θJA = 54°C/W (W-DFN2020-6 on 2oz copper; enables 1.2W dissipation at ΔT = 65°C) |
Pinout & Package
AP7347D-15FDZW-7B uses the W-DFN2020-6 (SWP) Type A1 wettable flank package (2.0mm × 2.0mm × 0.75mm), optimized for automated optical inspection and high-density PCB layouts. The exposed pad (EP) must be connected to GND via multiple vias for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT | Regulated 1.5V output; requires 1µF ceramic capacitor placed within 2mm of pin for stability |
| 2, 5 | NC | No-connect terminals; recommended to tie to GND for thermal conduction and EMI reduction |
| 3 | GND | Power ground return; must connect directly to large PCB ground plane with low-inductance path |
| 4 | EN | Active-high enable; floating state disables regulator; 1.25V min threshold ensures compatibility with 1.8V logic |
| 6 | VIN | Input supply (1.7–5.5V); requires 1µF decoupling capacitor adjacent to pin to suppress supply transients |
| EP | Exposed Pad | Thermal pad; must be soldered to ≥100mm² GND copper area with ≥4 thermal vias (0.3mm diameter) for θJA compliance |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 60µVrms output noise enables clean power for precision analog circuits without external filtering |
| Auto-discharge function | 30Ω on-resistance between VOUT and GND when disabled clears residual charge in <10ms, preventing latch-up in multi-rail systems |
| High PSRR architecture | 75dB rejection at 1kHz allows co-location with noisy DC/DC converters without additional LC filtering |
| Wettable flank packaging | W-DFN2020-6 SWP enables 100% solder joint inspection via AOI, reducing field failure risk in automotive production |
| Automotive-ready thermal design | +125°C ambient operation with thermal shutdown at +170°C junction temperature supports under-hood applications |
Applications
| Automotive Infotainment Power | Portable Medical Sensor Bias |
|---|---|
|
Use Scenario: Powering audio codec and touch controller in vehicle head units where EMI from CAN bus and DC/DC converters must not degrade signal integrity. IC Role / Device Role / Timing Role: Primary 1.5V LDO supplying low-noise bias to ADC reference and I²S interface buffers. Use Value: 75dB PSRR and 60µVrms noise prevent audible artifacts and measurement drift during engine cranking transients. |
Use Scenario: Providing stable 1.5V bias to MEMS accelerometers and ECG front-end amplifiers in handheld diagnostic devices. IC Role / Device Role / Timing Role: Always-on LDO maintaining sensor bias during sleep mode with ultra-low 60µA quiescent current. Use Value: Enables >18-month battery life in Bluetooth LE-connected devices while meeting IEC 60601-1 leakage current limits. |
| Industrial PLC I/O Module | Wi-Fi 6 IoT Edge Node |
|
Use Scenario: Regulating 1.5V for FPGA configuration memory and level-shifting logic in DIN-rail mounted controllers operating in 0–70°C enclosures. IC Role / Device Role / Timing Role: Secondary LDO delivering precise voltage to SRAM and interface ICs downstream of main 3.3V rail. Use Value: ±1% output accuracy ensures reliable FPGA bitstream loading across temperature, avoiding configuration failures. |
Use Scenario: Supplying 1.5V core voltage to Wi-Fi 6 SoC RF transceivers in smart home hubs requiring fast enable/disable cycling. IC Role / Device Role / Timing Role: Enable-controlled LDO synchronized with Wi-Fi duty cycle to minimize system standby power. Use Value: Auto-discharge clears VOUT in <10ms after disable, preventing shoot-through in multi-supply domain sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AP7361D-15FDZW-7B | 600mA rated output, 0.45V dropout at 1.5V (vs. 0.55V), same 60µA IQ and 60µVrms noise | Better suited for higher-current loads (e.g., dual-core MCU cores) but larger thermal footprint required | Select when load exceeds 500mA or lower dropout is needed for marginal input voltage conditions |
| Torex XC6210B152MR-G | 150mA max output, 0.35V dropout, 30µVrms noise, no enable or auto-discharge | Limited to ultra-low-power sensor nodes; lacks enable control and fault protection features | Choose only for space-constrained sub-100mA applications where lowest possible noise is critical and enable control is unnecessary |
Compared with AP7347D-15FDZW-7B, the AP7361D variant offers higher current headroom and lower dropout for demanding loads, while the XC6210B sacrifices current capability and system-level control features to achieve marginally lower noise-making the AP7347D the optimal balance of performance, integration, and automotive readiness.
Availability
AP7347D-15FDZW-7B is available at Aetrix Electronics and suitable for automotive infotainment systems, portable medical diagnostics, and industrial PLC I/O modules requiring stable component supply, long-lifecycle support, and AEC-Q200-aligned reliability.
Supply support for AP7347D-15FDZW-7B 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 protection solutions for automotive, industrial, and consumer markets.
The AP7347D series belongs to Diodes' high-PSRR, low-noise LDO portfolio designed specifically for noise-sensitive applications in automotive ADAS, infotainment, and battery-powered edge devices where precision voltage regulation and fast transient response are critical.
FAQ
What is the minimum input voltage required to maintain 1.5V output at 500mA?
The AP7347D-15FDZW-7B has a typical dropout voltage of 0.55V at 500mA and 1.5V output. Therefore, the minimum input voltage is 2.05V (1.5V + 0.55V). This value is confirmed in the Electrical Characteristics table under Dropout Voltage for 1.4V ≤ VOUT < 1.7V, where 0.55V is specified as the typical value at 500mA.
Does the AP7347D-15FDZW-7B require an external discharge resistor?
No. The AP7347D-15FDZW-7B integrates an auto-discharge NMOS transistor (30Ω on-resistance) between VOUT and GND when EN is low. This eliminates the need for an external resistor, enabling rapid VOUT discharge (<10ms) and simplifying BOM for multi-rail power sequencing.
Can the W-DFN2020-6 package be reflow soldered using standard lead-free profiles?
Yes. The AP7347D-15FDZW-7B is rated Moisture Sensitivity Level 1 per J-STD-020 and supports standard IPC/JEDEC J-STD-020 lead-free reflow profiles (peak 260°C). Its matte tin-plated terminals meet MIL-STD-202 Method 208 solderability requirements.
Is this part qualified to AEC-Q200 for automotive use?
No. The AP7347D-15FDZW-7B is not AEC-Q200 qualified. For automotive applications, Diodes specifies the AP7347DQ variant (separate datasheet DS42264), which undergoes extended temperature stress testing and qualification per AEC-Q200 Rev D.
AP7347D-15FDZW-7B 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):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.66V @ 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-15FDZW-7B FAQ
1.How can I place an order for AP7347D-15FDZW-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for AP7347D-15FDZW-7B 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-15FDZW-7B reliable?
The price and inventory of AP7347D-15FDZW-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347D-15FDZW-7B is usually 5 days.
3.What payment methods are accepted for AP7347D-15FDZW-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347D-15FDZW-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AP7347D-15FDZW-7B?
AP7347D-15FDZW-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AP7347D-15FDZW-7B 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-15FDZW-7B?
For technical support, including AP7347D-15FDZW-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347D-15FDZW-7B requirements.
6.How does Aetrix verify that AP7347D-15FDZW-7B is sourced from the original manufacturer or authorized distributors?
All AP7347D-15FDZW-7B 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-15FDZW-7B meets industry standards.
7.What is the process for return or replacement of AP7347D-15FDZW-7B?
All AP7347D-15FDZW-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7347D-15FDZW-7B, 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-15FDZW-7B part is unused and in its original packaging.
Return procedure for AP7347D-15FDZW-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AP7347D-15FDZW-7B 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…
