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

Diodes Incorporated AP7345D-285285RH4-7

Name: AP7345D-285285RH4-7
Brand: Diodes Incorporated
SKU: AP7345D-285285RH4-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: AP7345D-285285RH4-7

Manufacturer:: Diodes Incorporated

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

Package:: 8-XFDFN Exposed Pad

Datasheet:: AP7345D-285285RH4-7.pdf

Description:: IC REG LIN 2.85/2.85V 300MA 8DFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

AP7345D-285285RH4-7 from Diodes Incorporated is a dual-channel, 300mA low-dropout linear regulator with independent enable control per channel, fixed 2.85V output on both channels, ±1% output voltage accuracy over temperature, 75dB PSRR at 1kHz, and 60µV_rms output noise (10Hz–100kHz). It operates from 1.7V to 5.25V input and targets power-sensitive RF and digital core supplies in portable media devices.

For engineers reviewing the AP7345D-285285RH4-7 datasheet, AP7345D-285285RH4-7 pinout, AP7345D-285285RH4-7 application, or AP7345D-285285RH4-7 equivalent, this page delivers verified electrical specs, thermal-aware package layout guidance, dual-rail transient response behavior, and validated alternatives for dual-LDO replacement in space-constrained handheld designs.

Technical Context

The AP7345D-285285RH4-7 integrates two independent CMOS-based LDO regulators sharing a common ground but with separate VIN, VOUT, and EN pins-enabling asynchronous power sequencing and rail isolation. Each channel features internal current limiting, thermal shutdown at +150°C with +20°C hysteresis, and auto-discharge functionality via integrated N-channel FETs (30Ω typical).

Its X2-DFN1612-8 package uses an exposed thermal pad not electrically connected to GND by default; optimal thermal performance requires PCB copper area tied to GND or left floating-not used as sole GND electrode. Dropout voltage is 0.22V (typ) at 300mA for 2.85V output, enabling operation down to 3.07V input under full load.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 2.85V per channel; eliminates external feedback resistors and reduces BOM count in dual-rail systems.
Output Accuracy	±1% at +25°C, ±1.5% over –40°C to +85°C; ensures stable logic-level compliance for 2.8V–3.0V I/O domains.
PSRR	75dB at 1kHz; suppresses switching noise from adjacent DC/DC converters feeding shared input rails.
Output Noise	60µV_rms (10Hz–100kHz); meets low-noise requirements for RF synthesizers and high-resolution ADC reference supplies.
Quiescent Current	100µA (both channels enabled, no load); extends battery life in always-on subsystems like Bluetooth LE audio receivers.
Dropout Voltage	0.22V (typ) at 300mA; supports operation from single-cell Li-ion (3.0V min) while delivering full rated current.
Enable Threshold	EN high = ≥1.3V, EN low = ≤0.5V; compatible with 1.8V and 3.3V GPIO without level-shifting.

Pinout & Package

The AP7345D-285285RH4-7 is housed in a 1.6mm × 1.2mm, 0.4mm pitch X2-DFN1612-8 package with an exposed thermal pad. The compact footprint enables dense placement near RF transceivers or camera modules where board area is constrained.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pins 1, 4)	Power ground reference	Dual GND pins reduce ground loop impedance; must connect to low-impedance PCB ground plane for stability and noise immunity.
VOUT1 (Pin 2)	Channel 1 regulated output	Delivers 2.85V @ up to 300mA; requires local 1µF ceramic capacitor placed within 2mm of pin for transient response.
VOUT2 (Pin 3)	Channel 2 regulated output	Independent 2.85V rail; enables simultaneous powering of two isolated analog/digital blocks without cross-talk.
EN2 (Pin 5)	Channel 2 enable input	Active-high control; pull ≥1.3V to enable, ≤0.5V to shut down-supports dynamic power gating of secondary peripherals.
VIN2 (Pin 6)	Channel 2 input supply	Accepts 1.7V–5.25V; decoupled by dedicated 1µF ceramic cap close to pin to prevent input droop during load steps.
VIN1 (Pin 7)	Channel 1 input supply	Independent input allows separate sourcing (e.g., main PMIC vs. backup LDO) for fault containment and sequencing.
EN1 (Pin 8)	Channel 1 enable input	Asynchronous enable permits staggered startup-e.g., power core logic before RF front-end to manage inrush.
Thermal Pad	Thermal dissipation surface	Not electrically functional; must be soldered to large copper pour tied to GND for 600mW max power dissipation capability.

Key Features

Feature	Design Value
Dual independent enable inputs	EN1/EN2 allow per-rail power sequencing, dynamic shutdown, and fault isolation without external logic.
Auto-discharge function	Integrated 30Ω N-FET discharges VOUT to GND when disabled-prevents floating outputs and improves system reset integrity.
High PSRR + low noise	75dB rejection at 1kHz plus 60µV_rms noise enables clean supply for sensitive RF PLLs and high-speed SerDes receivers.
Ultra-low quiescent current	100µA total (both channels active) minimizes standby drain in battery-powered devices with always-on wake-up circuitry.
Thermal protection with hysteresis	+150°C shutdown with +20°C hysteresis prevents thermal cycling damage during sustained overload or poor airflow conditions.

Applications

Smartphone Baseband Power

RF Transceiver Supply

Use Scenario: Dual-rail power for application processor I/O and baseband modem core in LTE/5G smartphones.

IC Role / Device Role / Timing Role: Provides isolated, low-noise 2.85V supplies to separate voltage domains requiring independent enable control and fast transient response.

Use Value: Eliminates need for two discrete single-channel LDOs, reducing PCB area by 35% and component count while maintaining rail independence.

Use Scenario: Clean bias for RF power amplifier (PA) driver stages and low-noise amplifier (LNA) bias networks.

IC Role / Device Role / Timing Role: Delivers ultra-low-noise 2.85V with 75dB PSRR to suppress switching artifacts from nearby DC/DC converters.

Use Value: Reduces phase noise by >3dB in 2.4GHz/5GHz PA chains versus standard LDOs, improving EVM and spectral mask compliance.

Camera Module Core Logic

Portable Media Player Audio Codec

Use Scenario: Powering image signal processor (ISP) core and sensor interface logic in multi-camera smartphone arrays.

IC Role / Device Role / Timing Role: Supplies matched 2.85V rails with <±1.5% tracking across temperature, ensuring consistent timing margins for MIPI CSI-2 links.

Use Value: Enables simultaneous activation of dual ISPs without voltage mismatch-induced skew or data corruption on high-speed serial interfaces.

Use Scenario: Biasing DAC/ADC analog sections and headphone amplifier stages in portable music players.

IC Role / Device Role / Timing Role: Provides quiet 2.85V reference for audio codec analog front-end, minimizing audible hiss and distortion.

Use Value: Achieves >105dB SNR in 24-bit audio playback by suppressing broadband noise that would otherwise modulate analog signal paths.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS7A20285DQNR	Single-channel only; 300mA, 2.85V, 65dB PSRR, 12µV_rms noise, SOT-23-5 package.	Lacks second channel and independent enable-requires two units for dual-rail use, increasing footprint and cost.	Choose when only one regulated rail is needed or when ultra-low noise (<15µV_rms) outweighs channel count.
MCP1826S-285I/DB	Dual-channel, 300mA, 2.85V, ±2% accuracy, 60dB PSRR, no auto-discharge, 8-pin SOIC package.	Larger SOIC footprint (3.9mm × 4.9mm vs. 1.6mm × 1.2mm), higher dropout (0.45V), and no thermal pad limits power density.	Prefer for legacy through-hole or reflow-compatible designs where thermal constraints are less aggressive.

Compared with TPS7A20285DQNR and MCP1826S-285I/DB, the AP7345D-285285RH4-7 uniquely combines dual-channel integration, DFN-area efficiency, auto-discharge, and RF-grade PSRR/noise in a single 1.6mm × 1.2mm package-making it optimal for next-gen compact wireless devices demanding rail independence and minimal board real estate.

Availability

AP7345D-285285RH4-7 is available at Aetrix Electronics and suitable for smartphone baseband power, RF transceiver supply, camera module core logic, and portable media player audio codec applications requiring stable component supply, tight output voltage matching, and ultra-low noise performance.

Supply support for AP7345D-285285RH4-7 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 protection solutions for consumer, industrial, and communications markets.

The AP7345D belongs to Diodes' high-PSRR dual-LDO product line, engineered specifically for space-constrained portable electronics requiring independent, low-noise, and thermally efficient dual-rail regulation without external components.

FAQ

What is the maximum allowable input voltage for AP7345D-285285RH4-7?

The absolute maximum input voltage is 6.0V, but the recommended operating range is 1.7V to 5.25V. Exceeding 5.25V risks violating safe operating area limits and may trigger thermal shutdown even at light loads due to excessive power dissipation in the pass elements.

Does AP7345D-285285RH4-7 require external capacitors, and what values are recommended?

Yes-each channel requires a minimum 1.0µF ceramic capacitor on both input (CIN) and output (COUT), placed within 2mm of respective pins. Low-ESR X5R/X7R types are preferred; bulk capacitance may be added in parallel for high-dV/dt load steps, but the 1µF ceramic is mandatory for stability.

How does the thermal pad on the X2-DFN1612-8 package affect PCB layout?

The exposed thermal pad must be soldered to a PCB copper area sized per Diodes' recommended footprint (X2-DFN1612-8 layout guide). That copper should be connected to GND for thermal conduction-but not used as the sole GND return path, as it lacks sufficient current-carrying capacity for high-frequency ground currents.

Can AP7345D-285285RH4-7 operate with only one channel enabled?

Yes-EN1 and EN2 are fully independent. Driving EN1 high and EN2 low powers only Channel 1, drawing ~50µA quiescent current; both channels can be enabled, disabled, or sequenced asynchronously without affecting each other's regulation or stability.

AP7345D-285285RH4-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: 8-XFDFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Output Configuration:: Positive

Output Type:: Fixed

Number of Regulators:: 2

Voltage - Input (Max):: 5.25V

Voltage - Output (Min/Fixed):: 2.85V, 2.85V

Voltage - Output (Max):: -

Voltage Dropout (Max):: 0.3V @ 300mA, 0.3V @ 300mA

Current - Output:: 300mA, 300mA

Current - Quiescent (Iq):: 140 µA

Current - Supply (Max):: 70 µA

PSRR:: 75dB (1kHz)

Control Features:: Current Limit, Enable

Protection Features:: Short Circuit

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: X2-DFN1612-8

AP7345D-285285RH4-7 FAQ

1.How can I place an order for AP7345D-285285RH4-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for AP7345D-285285RH4-7 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 AP7345D-285285RH4-7 reliable?

The price and inventory of AP7345D-285285RH4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AP7345D-285285RH4-7 is usually 5 days.

3.What payment methods are accepted for AP7345D-285285RH4-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AP7345D-285285RH4-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for AP7345D-285285RH4-7?

AP7345D-285285RH4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your AP7345D-285285RH4-7 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 AP7345D-285285RH4-7?

For technical support, including AP7345D-285285RH4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AP7345D-285285RH4-7 requirements.

6.How does Aetrix verify that AP7345D-285285RH4-7 is sourced from the original manufacturer or authorized distributors?

All AP7345D-285285RH4-7 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 AP7345D-285285RH4-7 meets industry standards.

7.What is the process for return or replacement of AP7345D-285285RH4-7?

All AP7345D-285285RH4-7 units undergo pre-shipment inspection (PSI). If there is an issue with AP7345D-285285RH4-7, 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 AP7345D-285285RH4-7 part is unused and in its original packaging.

Return procedure for AP7345D-285285RH4-7:

1.Submit a request within 90 days.

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

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