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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Diodes Incorporated AP7347D-10FDZW-7B

Name: AP7347D-10FDZW-7B
Brand: Diodes Incorporated
SKU: AP7347D-10FDZW-7B
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7347D-10FDZW-7B

Manufacturer:: Diodes Incorporated

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 6-WDFN Exposed Pad

Datasheet:: AP7347D-10FDZW-7B.pdf

Description:: LDO CMOS LOWCURR W-DFN2020-6 T&R

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7347D-10FDZW-7B from Diodes Incorporated is a 500mA, 1.0V fixed-output low-dropout regulator with ±1% output voltage accuracy, 75dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz). Built on CMOS process, it features enable control, thermal shutdown, short-circuit protection, and auto-discharge functionality. It powers noise-sensitive subsystems in automotive infotainment and ADAS domain controllers where stable 1.0V rail integrity is critical.

For engineers reviewing the AP7347D-10FDZW-7B datasheet, AP7347D-10FDZW-7B pinout, AP7347D-10FDZW-7B application, or AP7347D-10FDZW-7B equivalent, this page delivers verified package mapping (W-DFN2020-6), terminal functions, thermal resistance (θ_JA = 54°C/W), dropout voltage (0.75V @ 500mA, V_OUT = 1.0V), and EN logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.25V) - all confirmed from Diodes DS42263 Rev. 2-2.

Technical Context

The AP7347D-10FDZW-7B integrates a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass transistor with auto-discharge path. Its CMOS architecture enables ultra-low quiescent current (60µA typ.) while maintaining fast load transient response (<200µs settling for 50mA step) and line regulation of 0.02%/V.

It operates across 1.7V–5.5V input range and delivers 1.0V output with ±1% accuracy over -40°C to +125°C ambient. Thermal shutdown triggers at +170°C with +20°C hysteresis, and short-circuit foldback limits output current to 180mA when V_OUT shorts to GND.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.0V ±1% - ensures stable core voltage for 1V logic domains without external feedback network.
Max Output Current	500mA - supports high-current digital loads such as MCU cores or FPGA I/O banks requiring regulated 1V supply.
PSRR	75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy 3.3V or 5V rails.
Output Noise	60µV_rms (10Hz–100kHz) - preserves signal integrity in analog front-ends and ADC reference paths.
Quiescent Current	60µA typical - extends battery life in always-on automotive modules like CAN transceiver standby circuits.
Dropout Voltage	0.75V max @ 500mA - enables operation from 1.75V input, compatible with single-cell LiFePO₄ or boosted 1.2V sources.
Enable Thresholds	V_IL ≤ 0.5V / V_IH ≥ 1.25V - interfaces directly with 1.8V or 3.3V GPIO without level-shifting.

Pinout & Package

AP7347D-10FDZW-7B uses the W-DFN2020-6 (SWP) Type A1 wettable flanks package (2.0mm × 2.0mm × 0.75mm), optimized for high-density automotive PCBs and automated optical inspection (AOI). The exposed pad (EP) must be connected to PCB ground plane for thermal dissipation (θ_JC = 20°C/W).

Pin/Terminal	Circuit Role	Design Meaning
1	VOUT	Regulated 1.0V output - requires 1µF ceramic capacitor placed adjacent to pin for stability and transient response.
2, 5	NC	No-connect terminals - recommended to tie to GND for enhanced thermal conduction and EMI shielding.
3	GND	Power ground reference - must connect to low-impedance PCB ground plane; shared with EP thermal pad.
4	EN	Active-high enable - drives regulator ON when ≥1.25V; pulls output to 0V with internal discharge path when disabled.
6	VIN	Input power supply (1.7–5.5V) - requires 1µF decoupling capacitor placed within 2mm of pin to suppress supply glitches.
EP	Exposed Pad	Thermal interface only - not electrically functional; must be soldered to large copper area tied to GND for θ_JA = 54°C/W.

Key Features

Feature	Design Value
Auto-discharge function	30Ω N-channel path discharges VOUT to GND within 100µs after EN deactivation - prevents floating rail during power sequencing.
Low-noise CMOS architecture	60µV_rms noise floor enables clean power for RF receivers and high-resolution SAR ADCs without post-regulation filtering.
Wide input voltage range	1.7V–5.5V operation supports direct connection to Li-ion, LiFePO₄, or buck converter outputs without intermediate regulation.
Automotive-grade thermal robustness	Rated for -40°C to +125°C ambient with +170°C junction shutdown - meets AEC-Q100 stress test requirements for under-hood applications.
Wettable flank packaging	SWP footprint enables reliable AOI inspection of solder joints - critical for zero-defect manufacturing in automotive electronics assembly.

Applications

ADAS Camera Module Power

Infotainment SoC Core Rail

Use Scenario: Powers image sensor analog front-end and ISP core in rear-view camera systems operating in engine bay environments.

IC Role / Device Role / Timing Role: Provides ultra-low-noise 1.0V supply to CIS analog blocks and 1V core domain of vision SoCs.

Use Value: 60µV_rms noise prevents pixel-level artifacts; 75dB PSRR rejects noise from nearby 5V DC/DC converters powering motor drivers.

Use Scenario: Supplies 1.0V core voltage to application processors in head-unit infotainment systems with multi-rail PMIC architectures.

IC Role / Device Role / Timing Role: Secondary LDO delivering precise 1.0V rail with fast transient response to handle burst-mode CPU load changes.

Use Value: 500mA capacity and <200µs load-step recovery maintain SoC clock stability during video decode bursts; ±1% accuracy ensures timing margin compliance.

Automotive Telematics GNSS Receiver

Body Control Module Low-Power Subsystem

Use Scenario: Regulates 1.0V supply for GPS/GNSS RF front-end ICs in telematics control units mounted near vehicle roof antennas.

IC Role / Device Role / Timing Role: Clean, low-noise LDO isolating GNSS baseband processor from noisy 3.3V system rail.

Use Value: 75dB PSRR at 1kHz suppresses switching harmonics from 3.3V buck converter; 60µV_rms noise preserves carrier-to-noise ratio (C/N₀) in weak-signal urban canyon conditions.

Use Scenario: Powers always-on microcontroller and CAN transceiver in door module ECUs requiring sub-100µA quiescent current during sleep mode.

IC Role / Device Role / Timing Role: Enable-controlled LDO providing 1.0V rail only when wake-up event occurs, minimizing standby power loss.

Use Value: 60µA quiescent current extends battery backup runtime; EN pin logic thresholds match 3.3V MCU GPIO levels without level shifters.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7361D-10FDZW-7B	600mA output, higher dropout (0.9V @ 600mA), no auto-discharge	Lacks VOUT discharge path - unsuitable for strict power sequencing where rapid rail collapse is required	Select when higher current is needed and discharge is handled externally via MOSFET or resistor.
Torex XC6210B102MR-G	1.0V fixed, 500mA, 45dB PSRR at 1kHz, 30µV_rms noise, SOT-25 package	Lower PSRR and no wettable flanks - less suitable for automotive AOI or high-noise environments	Choose for cost-sensitive non-automotive designs where 45dB PSRR suffices and SOT-25 is preferred for legacy layout reuse.

Compared with AP7347D-10FDZW-7B, AP7361D-10FDZW-7B trades auto-discharge for +100mA current headroom, while XC6210B102MR-G sacrifices PSRR and package reliability for lower unit cost - making the AP7347D optimal for automotive noise-critical 1V core rails demanding AOI-compatible packaging.

Availability

AP7347D-10FDZW-7B is available at Aetrix Electronics and suitable for automotive ADAS camera modules, infotainment SoC core supplies, and telematics GNSS receivers requiring stable component supply with full traceability and AEC-Q100-aligned sourcing.

Supply support for AP7347D-10FDZW-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 semiconductor company specializing in discrete, analog, and mixed-signal ICs for automotive, industrial, computing, and consumer markets, with ISO/TS 16949-certified manufacturing.

The AP7347D series belongs to Diodes' automotive-qualified LDO portfolio, designed specifically for noise-sensitive, high-reliability power rails in ADAS, infotainment, and body electronics - emphasizing PSRR, low noise, and robust thermal performance.

FAQ

What is the maximum allowable input voltage for AP7347D-10FDZW-7B?

The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.5V. Exceeding 5.5V risks permanent damage per Absolute Maximum Ratings. For 1.0V output, minimum input is 1.75V to guarantee 500mA delivery with 0.75V dropout margin.

Does AP7347D-10FDZW-7B require an external discharge resistor?

No. The device integrates an internal 30Ω N-channel transistor that actively discharges VOUT to GND when EN is pulled low. This eliminates need for external resistors, reduces BOM count, and ensures consistent discharge timing (<100µs) across temperature and process variation.

How does the W-DFN2020-6 (SWP) package improve thermal performance over SOT25?

The W-DFN2020-6 achieves θ_JA = 54°C/W versus 140°C/W for SOT25 due to its exposed thermal pad (EP) and shorter thermal path to PCB copper. When the EP is soldered to ≥100mm² GND plane, junction-to-ambient rise is reduced by ~62%, enabling sustained 500mA operation at +105°C ambient.

Can AP7347D-10FDZW-7B be used in AEC-Q100 qualified designs?

The AP7347D-10FDZW-7B itself is not AEC-Q100 certified; however, the automotive-grade variant AP7347DQ-10FDZW-7B is fully qualified per AEC-Q100 Grade 1 (-40°C to +125°C). For production automotive use, AP7347DQ must be specified - this part is intended for prototyping and non-safety-critical evaluation.

AP7347D-10FDZW-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):: 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-10FDZW-7B FAQ

1.How can I place an order for AP7347D-10FDZW-7B through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7347D-10FDZW-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-10FDZW-7B reliable?

The price and inventory of AP7347D-10FDZW-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-10FDZW-7B is usually 5 days.

3.What payment methods are accepted for AP7347D-10FDZW-7B?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347D-10FDZW-7B transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7347D-10FDZW-7B?

AP7347D-10FDZW-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7347D-10FDZW-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-10FDZW-7B?

For technical support, including AP7347D-10FDZW-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347D-10FDZW-7B requirements.

6.How does Aetrix verify that AP7347D-10FDZW-7B is sourced from the original manufacturer or authorized distributors?

All AP7347D-10FDZW-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-10FDZW-7B meets industry standards.

7.What is the process for return or replacement of AP7347D-10FDZW-7B?

All AP7347D-10FDZW-7B units undergo pre-shipment inspection (PSI). If there is an issue with AP7347D-10FDZW-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-10FDZW-7B part is unused and in its original packaging.

Return procedure for AP7347D-10FDZW-7B:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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