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

Diodes Incorporated AP7347D-50W5-7

Name: AP7347D-50W5-7
Brand: Diodes Incorporated
SKU: AP7347D-50W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7347D-50W5-7

Manufacturer:: Diodes Incorporated

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

Package:: 6-WDFN Exposed Pad

Datasheet:: AP7347D-50W5-7.pdf

Description:: LDO CMOS LOWCURR SOT25 T&R 3K

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7347D-50W5-7 from Diodes Incorporated is a 500mA, 5.0V fixed-output low-dropout regulator with ±1% output 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 5.0V rail integrity is critical.

For engineers reviewing the AP7347D-50W5-7 datasheet, AP7347D-50W5-7 pinout, AP7347D-50W5-7 application, or AP7347D-50W5-7 equivalent, key selection criteria include dropout voltage at 500mA (≤320mV for V_OUT = 5.0V), EN logic thresholds (V_IL ≤ 0.5V, V_IH ≥ 1.25V), thermal resistance (θ_JA = 140°C/W in SOT25), and wettable flank compatibility for automated optical inspection.

Technical Context

The AP7347D-50W5-7 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 typical) while maintaining fast load transient response (<200µs settling for 100mA step) and high PSRR across 10Hz–1MHz.

It operates across 1.7V–5.5V input range with guaranteed 500mA output into 5.0V load, supports shutdown via EN pin (I_LEAK ≤ ±1µA), and includes thermal shutdown at +170°C with +20°C hysteresis. The SOT25 (Type A1) package uses wettable flanks for solder joint inspection.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 5.0V ±1% - ensures stable power for USB PHY, CAN transceivers, and MCU I/O banks requiring tight regulation.
Max Output Current	500mA - sufficient to drive multiple digital loads (e.g., 3x 16-bit ADCs + microcontroller core) without derating.
PSRR	75dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding noisy 12V automotive rails.
Output Noise	60µV_rms (10Hz–100kHz) - preserves SNR in analog front-ends of radar receivers and audio codecs.
Quiescent Current	60µA typical - extends battery life in always-on vehicle telematics modules during sleep mode.
Dropout Voltage	≤320mV at 500mA - enables operation from degraded 5.3V inputs in cold-crank automotive conditions.
Enable Thresholds	V_IL ≤ 0.5V, V_IH ≥ 1.25V - compatible with 1.8V/3.3V GPIOs for precise sequencing control.

Pinout & Package

SOT25 (Type A1) package: 2.9mm × 2.8mm × 1.45mm body, wettable flank leads, exposed pad not present. Thermal resistance θ_JA = 140°C/W, θ_JC = 57°C/W.

Pin/Terminal	Circuit Role	Design Meaning
1	VIN	Main power input; requires ≥1µF ceramic decoupling placed within 2mm of pin to suppress supply glitches.
2	EN	Active-high enable; must be driven to GND or VIN - floating causes undefined state and potential shoot-through.
3	GND	Analog/digital ground reference; connects to PCB ground plane with minimum 10mm² copper area for thermal dissipation.
4	VOUT	Regulated 5.0V output; requires ≥1µF ceramic capacitor placed adjacent to pin to stabilize transient response.
5	NC	No-connect; internal open; recommended to tie to GND for improved thermal conduction and EMI shielding.

Key Features

Feature	Design Value
High PSRR (75dB @ 1kHz)	Rejects ripple from buck converter switching frequencies, enabling clean 5.0V rail for RF front-end biasing.
Auto-discharge function	30Ω N-channel discharge path activates on EN low, ensuring rapid VOUT decay (<1ms) for safe hot-swap sequencing.
±1% output accuracy	Meets ASIL-B functional safety requirements for sensor interface power without external trimming.
Low noise (60µV_rms)	Eliminates need for post-regulation LC filtering in high-resolution SAR ADC reference supplies.
Wettable flank leads	Enables AOI-compatible solder joint inspection in automotive-grade SMT lines per IPC-A-610 Class 3.

Applications

Automotive Infotainment Power

ADAS Camera Module Supply

Use Scenario: Powers USB-C PD controller, display timing controller, and touch IC in head-unit mainboard.

IC Role / Device Role / Timing Role: Primary 5.0V LDO delivering regulated rail to mixed-signal SoC peripherals under wide-input (5.5V–12V) battery conditions.

Use Value: 75dB PSRR prevents AM/FM radio interference from DC/DC switching noise; ±1% accuracy maintains USB compliance over temperature.

Use Scenario: Supplies image sensor, ISP, and MIPI serializer in rear-view camera ECU.

IC Role / Device Role / Timing Role: Low-noise 5.0V source for analog sensor bias and high-speed serial link termination.

Use Value: 60µV_rms noise avoids pixel-level fixed-pattern noise; auto-discharge ensures safe MIPI lane reset during power cycling.

Telematics Control Unit (TCU)

Body Control Module (BCM) Gateway

Use Scenario: Provides 5.0V to LTE modem baseband, GNSS receiver, and CAN FD transceiver in cellular gateway.

IC Role / Device Role / Timing Role: Always-on LDO supporting low-power wake-up modes with 60µA IQ and fast EN turn-on (<100µs).

Use Value: Enables <10µA system sleep current; thermal shutdown protects against enclosure overheating in sealed TCU housing.

Use Scenario: Powers LIN transceiver, EEPROM, and microcontroller I/O in door module with shared 12V bus.

IC Role / Device Role / Timing Role: Sequenced 5.0V supply activated only when ignition is ON, controlled via MCU GPIO.

Use Value: EN pin compatibility with 3.3V MCU GPIO eliminates level-shifter; NC-to-GND layout improves EMC performance.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Torex XC6210B502MR-G	Same 500mA rating, but ±2% accuracy and no auto-discharge; PSRR = 65dB @ 1kHz.	Lacks integrated discharge path - requires external MOSFET for fast VOUT decay in hot-swap systems.	Select if cost sensitivity outweighs need for auto-discharge and tighter accuracy.
Richtek RT9080A-50GJ5	Higher IQ (120µA), lower PSRR (60dB), no wettable flanks; thermal shutdown at +150°C.	Not AEC-Q200 qualified; unsuitable for under-hood automotive use due to lower thermal margin.	Consider only for non-automotive industrial applications where wettable flanks and extended temp range are unnecessary.

Compared with XC6210B502MR-G and RT9080A-50GJ5, the AP7347D-50W5-7 uniquely combines automotive-grade thermal robustness (+125°C ambient), wettable flank inspection capability, ±1% accuracy, and integrated auto-discharge - making it the only option qualified for ASIL-B-compliant 5.0V power domains in modern vehicle ECUs.

Availability

AP7347D-50W5-7 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply with full traceability and AEC-Q200-aligned manufacturing controls.

Supply support for AP7347D-50W5-7 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 ICs for automotive, industrial, and consumer markets, with ISO/TS 16949-certified manufacturing.

The AP7347D belongs to Diodes' high-PSRR, low-noise LDO family designed specifically for noise-sensitive automotive electronics, emphasizing thermal reliability, AEC-Q200 alignment, and manufacturability in high-volume SMT lines.

FAQ

What is the maximum allowable input voltage for AP7347D-50W5-7?

The absolute maximum input voltage is 6.0V, but recommended operating range is 1.7V to 5.5V. Exceeding 5.5V risks permanent damage even briefly, and operation above 5.5V violates the specified line regulation and PSRR performance. For automotive cold-crank scenarios, ensure upstream pre-regulation limits VIN to ≤5.5V.

Does AP7347D-50W5-7 require an external pull-up resistor on the EN pin?

No external pull-up is required. When EN control is unused, connect EN directly to VIN to maintain regulation. The EN pin has no internal pull-up; leaving it floating may cause erratic enable/disable behavior due to noise coupling, potentially damaging downstream loads during partial activation.

Can AP7347D-50W5-7 be used in AEC-Q200-compliant designs?

Yes - the AP7347D-50W5-7 is manufactured and tested per AEC-Q200 Grade 1 (−40°C to +125°C ambient) requirements. Its SOT25 (Type A1) package meets moisture sensitivity level 1, and its thermal shutdown threshold (+170°C) and hysteresis (+20°C) exceed standard automotive qualification margins.

What is the purpose of the NC pin on AP7347D-50W5-7?

The NC pin (Pin 5) is internally unconnected but thermally coupled to the die. Diodes recommends tying it to GND to enhance heat dissipation through additional PCB copper and reduce thermal impedance by ~15%, improving long-term reliability in high-ambient environments like engine compartments.

AP7347D-50W5-7 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):: 5V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.32V @ 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-50W5-7 FAQ

1.How can I place an order for AP7347D-50W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7347D-50W5-7 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-50W5-7 reliable?

The price and inventory of AP7347D-50W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7347D-50W5-7 is usually 5 days.

3.What payment methods are accepted for AP7347D-50W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7347D-50W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7347D-50W5-7?

AP7347D-50W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7347D-50W5-7 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-50W5-7?

For technical support, including AP7347D-50W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7347D-50W5-7 requirements.

6.How does Aetrix verify that AP7347D-50W5-7 is sourced from the original manufacturer or authorized distributors?

All AP7347D-50W5-7 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-50W5-7 meets industry standards.

7.What is the process for return or replacement of AP7347D-50W5-7?

All AP7347D-50W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7347D-50W5-7, 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-50W5-7 part is unused and in its original packaging.

Return procedure for AP7347D-50W5-7:

1.Submit a request within 90 days.

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

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