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

Diodes Incorporated AP7346D-2833FS6-7

Name: AP7346D-2833FS6-7
Brand: Diodes Incorporated
SKU: AP7346D-2833FS6-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7346D-2833FS6-7

Manufacturer:: Diodes Incorporated

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

Package:: 6-XFDFN Exposed Pad

Datasheet:: AP7346D-2833FS6-7.pdf

Description:: IC REG LIN 2.8V/3.3V X2DFN1212-6

Quantity:: RFQ Add To RFQ list

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Inventory:4,956

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Product details

Overview

AP7346D-2833FS6-7 from Diodes Incorporated is a dual-channel, high-accuracy current-limiting LDO regulator in X2-DFN1212-6 package, delivering fixed 2.8V and 3.3V outputs with ±1% accuracy, 75dB PSRR at 1kHz, and 60µVrms 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 camera modules in space-constrained portable devices.

For engineers reviewing the AP7346D-2833FS6-7 datasheet, AP7346D-2833FS6-7 pinout, AP7346D-2833FS6-7 application, or AP7346D-2833FS6-7 equivalent, key selection criteria include dual-output voltage matching (2.8V/3.3V), channel-independent enable control, thermal performance in 1.2mm × 1.2mm DFN, current-limit accuracy (±25mA around 157mA), and discharge functionality for power sequencing compliance.

Technical Context

The AP7346D-2833FS6-7 integrates two independent CMOS-based LDO regulators sharing a single VIN input but featuring separate EN1/EN2 controls and VOUT1/VOUT2 outputs. Each channel includes a precision voltage reference, error amplifier, current-limit circuit, and NMOS pass device with 50Ω on-resistance for auto-discharge.

It operates across 1.7V–5.25V input range with dropout voltages ranging from 0.22V (3.0V < VOUT ≤ 3.6V, IOUT = 120mA) to 0.59V (VOUT ≤ 1.2V), and supports stable operation with 0.47µF ceramic output capacitors per channel - enabling compact, low-noise power delivery for sensitive analog and RF subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltages	Fixed 2.8V (Channel 1) and 3.3V (Channel 2); eliminates external feedback resistors 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 SoC and sensor interfaces.
PSRR	75dB at 1kHz; suppresses switching noise from upstream DC-DC converters feeding RF transceivers or ADCs.
Output Noise	60µVrms (10Hz–100kHz); minimizes phase noise impact in local oscillator supplies and high-resolution imaging sensors.
Quiescent Current	35µA (one channel active, no load); extends battery life in always-on fingerprint or ambient light sensing subsystems.
Current Limit	157mA ±25mA per channel; provides predictable short-circuit protection without requiring external current-sense components.
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).

Pin/Terminal	Circuit Role	Design Meaning
1	VOUT1	Regulated 2.8V output; requires local 0.47µF ceramic capacitor for stability and transient response.
2	VOUT2	Regulated 3.3V output; independently controllable and decoupled from VOUT1.
3	GND	Analog/digital ground reference; must be connected to low-impedance PCB ground plane.
4	EN2	Active-high enable for Channel 2; floating prohibited; ties to VIN for always-on operation.
5	VIN	Common input (1.7V–5.25V); shared by both regulators; requires 0.47µF ceramic decoupling adjacent to pin.
6	EN1	Active-high enable for Channel 1; enables independent power sequencing of 2.8V domain.

Key Features

Feature	Design Value
Dual independent enable inputs	EN1 and EN2 allow staggered startup/shutdown of 2.8V and 3.3V rails - critical for FPGA I/O bank sequencing and camera module power-up order.
Integrated auto-discharge	50Ω NMOS discharge path per channel pulls VOUT to GND within microseconds after EN deactivation - meets USB PD and MIPI compliance timing requirements.
Low-noise, high-PSRR regulation	75dB PSRR + 60µVrms noise enables direct powering of RF synthesizers and image signal processors without additional filtering.
Wide input voltage range	1.7V–5.25V operation supports single-cell Li-ion (2.7–4.2V), Li-polymer, or buffered 3.3V/5V system rails.
Thermally optimized DFN	X2-DFN1212-6 package with thermal pad allows >600mW power dissipation at +85°C ambient - suitable for sustained 130mA loads per channel.

Applications

Fingerprint Module Power

RF Transceiver Supply

Use Scenario: Biometric authentication subsystem requiring isolated, low-noise 2.8V analog and 3.3V digital rails.

IC Role / Device Role / Timing Role: Dual-LDO provides regulated, sequenced power to fingerprint sensor ASIC and its interface logic.

Use Value: Independent EN1/EN2 enables precise wake-up timing; 60µVrms noise prevents false touch detection from supply-induced analog offset drift.

Use Scenario: 2.4GHz/5GHz Wi-Fi/BT transceiver IC needing clean 3.3V PA bias and 2.8V VCO/LNA supply.

IC Role / Device Role / Timing Role: AP7346D-2833FS6-7 delivers low-PSRR, low-noise rails to minimize EVM degradation and phase noise.

Use Value: 75dB PSRR at 1kHz rejects noise from shared SMPS input; dual outputs eliminate cross-talk between PA and RF front-end domains.

Smartphone Camera Module

Portable Media Player Audio Codec

Use Scenario: Multi-lens smartphone camera with separate ISPs, autofocus actuators, and image sensors.

IC Role / Device Role / Timing Role: Supplies 2.8V to CIS analog front-end and 3.3V to digital interface (MIPI CSI-2) simultaneously.

Use Value: Auto-discharge ensures VOUT1/VOUT2 collapse within 10µs after shutdown - preventing latch-up during hot-plug camera insertion.

Use Scenario: High-fidelity audio playback in battery-powered media players using DAC/amp SoCs.

IC Role / Device Role / Timing Role: Powers 3.3V digital core and 2.8V analog AVDD for sigma-delta modulators and headphone drivers.

Use Value: ±1% output accuracy maintains THD+N spec across temperature; 35µA quiescent current extends playback time in standby mode.

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-2833FS6-7	Successor part; identical pinout, same 2.8V/3.3V outputs, improved current limit accuracy (±15mA vs ±25mA), lower dropout (0.20V @ 3.3V/120mA).	Recommended for new designs; supports tighter load regulation in high-current camera ISP rails.	Select when designing for production beyond Q3 2024; AP7346 is not recommended for new designs per Diodes documentation.
TPL7407LDR	Single-channel 3.3V LDO (no 2.8V option); higher IQ (65µA), no auto-discharge; SOT-23-6 package (larger footprint).	Requires two discrete devices to replicate dual-rail function; lacks independent enable and discharge.	Only viable if redesigning layout for larger package and accepting increased board area and missing sequencing capability.

Compared with AP7345D-2833FS6-7, this part offers legacy compatibility but sacrifices current-limit precision and dropout performance; versus TPL7407LDR, it delivers true dual-rail integration and power sequencing - making it superior for space-constrained, multi-rail portable systems despite end-of-life status.

Availability

AP7346D-2833FS6-7 is available at Aetrix Electronics and suitable for fingerprint modules, RF transceivers, smartphone camera modules, and portable media players requiring stable component supply with guaranteed traceability and lifecycle continuity.

Supply support for AP7346D-2833FS6-7 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 power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.

The AP7346 belongs to Diodes' high-accuracy dual-LDO product line, engineered specifically for multi-rail portable electronics where board space, noise sensitivity, and power sequencing are critical constraints.

FAQ

Is AP7346D-2833FS6-7 pin-compatible with AP7345D-2833FS6-7?

Yes - both use the identical X2-DFN1212-6 package and share identical pin mapping (VOUT1, VOUT2, GND, EN2, VIN, EN1). The AP7345D is a direct functional upgrade with tighter specifications, enabling drop-in replacement in existing layouts without PCB revision.

What is the purpose of the thermal pad on the AP7346D-2833FS6-7 package?

The exposed thermal pad improves heat dissipation from the silicon die but is not internally connected to GND. Diodes recommends connecting it to a large copper pour tied to the system GND plane to enhance thermal performance - however, it must not serve as the sole GND connection point for the device.

Does AP7346D-2833FS6-7 support simultaneous enable of both channels?

Yes - driving both EN1 and EN2 high activates both 2.8V and 3.3V outputs concurrently. Quiescent current rises to 70–100µA (vs 35µA for single-channel active), and each channel remains fully independent in regulation, current limiting, and shutdown behavior.

Can AP7346D-2833FS6-7 operate with only one output loaded?

Yes - either VOUT1 or VOUT2 may be unloaded while the other supplies full rated current (up to 130mA). Load regulation remains within specification (±30mV), and PSRR/noise performance is unaffected, enabling flexible power partitioning in modular designs.

AP7346D-2833FS6-7 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, 3.3V

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-2833FS6-7 FAQ

1.How can I place an order for AP7346D-2833FS6-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7346D-2833FS6-7 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-2833FS6-7 reliable?

The price and inventory of AP7346D-2833FS6-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7346D-2833FS6-7 is usually 5 days.

3.What payment methods are accepted for AP7346D-2833FS6-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7346D-2833FS6-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7346D-2833FS6-7?

AP7346D-2833FS6-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7346D-2833FS6-7 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-2833FS6-7?

For technical support, including AP7346D-2833FS6-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7346D-2833FS6-7 requirements.

6.How does Aetrix verify that AP7346D-2833FS6-7 is sourced from the original manufacturer or authorized distributors?

All AP7346D-2833FS6-7 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-2833FS6-7 meets industry standards.

7.What is the process for return or replacement of AP7346D-2833FS6-7?

All AP7346D-2833FS6-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7346D-2833FS6-7, 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-2833FS6-7 part is unused and in its original packaging.

Return procedure for AP7346D-2833FS6-7:

1.Submit a request within 90 days.

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

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