Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated AP7346D-3028FS6-7

Name: AP7346D-3028FS6-7
Brand: Diodes Incorporated
SKU: AP7346D-3028FS6-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: AP7346D-3028FS6-7

Manufacturer:: Diodes Incorporated

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

Package:: 6-XFDFN Exposed Pad

Datasheet:: AP7346D-3028FS6-7.pdf

Description:: IC REG LIN 2.8V/3V X2DFN1212-6

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:5,000

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

AP7346D-3028FS6-7 from Diodes Incorporated is a dual-channel, high-accuracy current-limiting LDO regulator in X2-DFN1212-6 package, delivering fixed 3.0V and 2.8V outputs with ±1% accuracy, 75dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz). It features independent enable pins (EN1/EN2), low 35µA quiescent current (single-channel active), and integrated auto-discharge for rapid output voltage decay during shutdown - optimized for RF supply rails and portable imaging modules.

For engineers reviewing the AP7346D-3028FS6-7 datasheet, AP7346D-3028FS6-7 pinout, AP7346D-3028FS6-7 application, or AP7346D-3028FS6-7 equivalent, key selection criteria include dual-output voltage matching (3.0V/2.8V), channel-independent enable control, thermal performance in 1.2mm × 1.2mm DFN, current-limit accuracy (157mA ±25mA), and discharge functionality for power sequencing compliance.

Technical Context

The AP7346D-3028FS6-7 integrates two independent CMOS-based LDO regulators sharing a single VIN input but with separate EN1/EN2 controls and VOUT1/VOUT2 outputs. Each channel employs a precision voltage reference, error amplifier, and current-limit circuit with fold-back protection (55mA short-circuit clamp) and built-in N-channel discharge MOSFET (50Ω typical R_ON).

It operates across 1.7V–5.25V input range with dropout as low as 0.22V at 3.0V < VOUT ≤ 3.6V (120mA load), supports 0.47µF ceramic output capacitors per channel, and maintains stability over −40°C to +85°C ambient with ±30ppm/°C output voltage temperature coefficient.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltages	Fixed 3.0V (Channel 1) and 2.8V (Channel 2); eliminates external resistor networks and reduces BOM count.
Output Accuracy	±1% at +25°C, ±1.5% over −40°C to +85°C; ensures stable core/logic rail tolerance for sensitive RF ICs and image sensors.
PSRR	75dB at 1kHz; suppresses switching noise from adjacent DC-DC converters feeding shared input rails.
Quiescent Current	35µA (one channel active, no load); enables >10-year battery life in always-on fingerprint sensor modules.
Current Limit	157mA ±25mA per channel; provides predictable overcurrent protection without external sensing resistors.
Output Noise	60µV_rms (10Hz–100kHz); meets low-noise requirements for analog front-ends in camera ISPs and audio codecs.
Enable Thresholds	EN high ≥1.3V, EN low ≤0.5V; compatible with 1.8V/3.3V GPIOs without level-shifting.

Pinout & Package

X2-DFN1212-6 package: 1.2mm × 1.2mm footprint, 0.4mm pitch, thermally enhanced with exposed thermal pad (not electrically connected to GND by default; recommended to tie to ground plane for thermal dissipation).

Pin/Terminal	Circuit Role	Design Meaning
1	VOUT1	Regulated 3.0V output; requires local 0.47µF ceramic capacitor placed adjacent to pin and GND.
2	VOUT2	Regulated 2.8V output; independently controllable; decoupling must be physically separated from VOUT1 path.
3	GND	Analog/digital ground reference; connects directly to PCB ground plane to minimize impedance in feedback and current-sense paths.
4	EN2	Active-high enable for Channel 2; floating state prohibited; must be driven to <0.5V (shutdown) or >1.3V (active).
5	VIN	Shared 1.7V–5.25V input; requires 0.47µF ceramic capacitor between VIN and GND, placed within 2mm of pin.
6	EN1	Active-high enable for Channel 1; supports independent power sequencing (e.g., enable VOUT1 before VOUT2 in boot sequence).

Key Features

Feature	Design Value
Dual independent enable inputs	EN1 and EN2 allow staggered startup/shutdown - critical for avoiding back-powering in multi-rail camera modules.
Built-in auto-discharge	50Ω on-chip N-MOSFET rapidly discharges VOUT1/VOUT2 when respective EN pin is pulled low, eliminating need for external bleed resistors.
Low-noise, high-PSRR regulation	60µV_rms noise + 75dB PSRR enables clean power delivery to RF transceivers and high-resolution ADCs without additional filtering.
Wide input voltage range	1.7V–5.25V operation supports direct Li-ion (3.0–4.2V), USB (4.75–5.25V), and multi-cell alkaline inputs without pre-regulation.
High-accuracy current limit	157mA ±25mA per channel ensures consistent fault response across temperature and process variation - simplifies safety margining.

Applications

Fingerprint Sensor Module

Smartphone Camera Subsystem

Use Scenario: Powering capacitive fingerprint sensor ASIC and its analog front-end during biometric authentication.

IC Role / Device Role / Timing Role: Dual LDO supplies 3.0V to digital logic and 2.8V to analog sensing circuitry with independent enable sequencing.

Use Value: Auto-discharge prevents residual voltage on analog rail from interfering with next capture cycle; ±1% accuracy ensures consistent sensor biasing.

Use Scenario: Providing clean, sequenced power to image signal processor (ISP) and CMOS image sensor in mobile phone rear camera.

IC Role / Device Role / Timing Role: Delivers 3.0V to ISP I/O and 2.8V to sensor analog core, with EN1/EN2 enabling controlled power-up order per MIPI CSI-2 timing spec.

Use Value: 75dB PSRR rejects noise from baseband processor switching; 60µV_rms noise avoids fixed-pattern noise in low-light images.

Wireless Communication RF Front-End

Portable Media Player Audio Codec

Use Scenario: Supplying low-noise bias to RF power amplifier (PA) driver and low-noise amplifier (LNA) in Bluetooth/Wi-Fi combo module.

IC Role / Device Role / Timing Role: Regulates 2.8V for LNA and 3.0V for PA driver from shared battery rail; EN2 enables fast LNA turn-on prior to transmission burst.

Use Value: 157mA current limit protects PA driver during antenna mismatch events; 0.22V dropout at 3.0V output preserves headroom at end-of-battery.

Use Scenario: Powering stereo audio DAC and headphone amplifier in battery-powered media player with extended playback time.

IC Role / Device Role / Timing Role: Supplies 3.0V to DAC digital interface and 2.8V to analog output stage; ultra-low 35µA quiescent current minimizes standby drain.

Use Value: ±1% output accuracy ensures consistent DAC reference voltage; low noise prevents audible hiss in high-gain headphone output.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output LDO applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
AP7345D-3028FS6-7	Successor device; identical pinout, same 3.0V/2.8V outputs, improved PSRR (80dB @1kHz), lower dropout (0.20V), and reduced quiescent current (28µA).	Recommended for new designs; supports tighter noise budgets in next-gen RF modules and higher efficiency in battery-constrained wearables.	Select AP7345D if designing new products - it replaces AP7346 per Diodes' notice and offers measurable improvements without layout change.
TPL7407LDR	Single-channel 7-output high-side driver (not LDO); no voltage regulation, no current limiting, no low-noise design - functionally incompatible.	Not suitable as replacement; intended for LED/relay driving, not precision analog power.	Avoid TPL7407LDR - it lacks regulation, dual outputs, and noise/accuracy specs required for AP7346D-3028FS6-7 use cases.

Compared with AP7346D-3028FS6-7, the AP7345D-3028FS6-7 delivers superior PSRR and efficiency while maintaining full pin and functional compatibility, making it the only viable drop-in upgrade; the TPL7407LDR is not an LDO and cannot fulfill the regulated dual-voltage, low-noise, current-limited power role.

Availability

AP7346D-3028FS6-7 is available at Aetrix Electronics and suitable for fingerprint sensor modules, smartphone camera subsystems, and wireless communication RF front-ends requiring stable component supply and long-term industrial availability.

Supply support for AP7346D-3028FS6-7 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-performance power management, signal integrity, and connectivity solutions for consumer, industrial, and automotive markets.

The AP7346 series belongs to Diodes' precision dual-LDO product line, designed specifically for space-constrained portable electronics requiring independent, low-noise, sequenced power rails with integrated protection and discharge.

FAQ

Is AP7346D-3028FS6-7 recommended for new designs?

No - Diodes explicitly states "THE AP7346 IS NOT RECOMMENDED FOR NEW DESIGNS. PLEASE USE THE AP7345D." The AP7345D-3028FS6-7 is a direct pin- and function-compatible successor with improved PSRR (80dB), lower dropout (0.20V), and reduced quiescent current (28µA), released to address evolving low-noise and efficiency requirements in portable systems.

What is the function of the thermal pad on the X2-DFN1212-6 package?

The exposed thermal pad is not electrically connected to any internal node and must not be used as a GND electrode. Its purpose is thermal conduction: Diodes recommends connecting it to a large copper area tied to GND for optimal heat dissipation, but leaving it unconnected is acceptable if thermal limits (600mW max PD, −40°C to +85°C ambient) are not exceeded in the application.

Can EN1 and EN2 be tied together and driven by a single GPIO?

Yes - EN1 and EN2 may be connected and driven by one microcontroller GPIO, enabling simultaneous control of both channels. However, doing so forfeits independent sequencing capability (e.g., powering VOUT1 before VOUT2). If staggered startup is required, separate GPIOs or logic gating must be used to maintain individual EN control.

Does AP7346D-3028FS6-7 support reverse current blocking?

No - the AP7346D-3028FS6-7 does not integrate reverse current blocking. When an output voltage exceeds the input (e.g., during hot-swap or backup battery scenarios), current can flow backward from VOUT to VIN through the internal pass FET body diode. External reverse-blocking diodes or ideal diode controllers are required if reverse current must be prevented.

AP7346D-3028FS6-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 6-XFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 2

Voltage - Input (Max):: 5.25V

Voltage - Output (Min/Fixed):: 2.8V, 3V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.3V @ 120mA, 0.29V @ 120mA

Current - Output:: 130mA, 130mA

Current - Quiescent (Iq):: 100 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:: X2-DFN1212-6

AP7346D-3028FS6-7 FAQ

1.How can I place an order for AP7346D-3028FS6-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7346D-3028FS6-7 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 AP7346D-3028FS6-7 reliable?

The price and inventory of AP7346D-3028FS6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7346D-3028FS6-7 is usually 5 days.

3.What payment methods are accepted for AP7346D-3028FS6-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7346D-3028FS6-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7346D-3028FS6-7?

AP7346D-3028FS6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7346D-3028FS6-7 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 AP7346D-3028FS6-7?

For technical support, including AP7346D-3028FS6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7346D-3028FS6-7 requirements.

6.How does Aetrix verify that AP7346D-3028FS6-7 is sourced from the original manufacturer or authorized distributors?

All AP7346D-3028FS6-7 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 AP7346D-3028FS6-7 meets industry standards.

7.What is the process for return or replacement of AP7346D-3028FS6-7?

All AP7346D-3028FS6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7346D-3028FS6-7, 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 AP7346D-3028FS6-7 part is unused and in its original packaging.

Return procedure for AP7346D-3028FS6-7:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

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…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…