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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Analog Devices Inc. ADP5310AREZN-3.3R7

Name: ADP5310AREZN-3.3R7
Brand: Analog Devices Inc.
SKU: ADP5310AREZN-3.3R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADP5310AREZN-3.3R7

Manufacturer:: Analog Devices Inc.

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-TSSOP (0.173", 4.40mm Width) Exposed Pad

Datasheet:: ADP5310AREZN-3.3R7.pdf

Description:: IC REG BUCK ADJ/3.3V DL 16TSSOP

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Product details

Overview

ADP5310AREZN-3.3R7 from Analog Devices is a 3-channel integrated power management IC featuring two synchronous buck regulators (800 mA Channel 1, 50/300 mA Channel 2) and a high-side load switch (494 mΩ @ 2.5 V), all in a 16-lead TSSOP_EP package. It operates from 2.7 V to 15.0 V input, delivers ±1.5% output accuracy in PWM mode, and achieves 700 nA quiescent current in hysteresis mode-enabling ultra-low-power keep-alive supplies for battery-powered metering and medical devices.

For engineers reviewing the ADP5310AREZN-3.3R7 datasheet, ADP5310AREZN-3.3R7 pinout, ADP5310AREZN-3.3R7 application, or ADP5310AREZN-3.3R7 equivalent, this page provides verified specifications, validated pin functions, confirmed thermal and protection features, and real-world application context for energy metering, portable diagnostics, and low-power IoT subsystems.

Technical Context

The ADP5310AREZN-3.3R7 integrates three independent power domains: Channel 1 uses current-mode constant-frequency PWM with automatic PSM/PWM transition and 100% duty-cycle capability; Channel 2 supports dual-mode operation-ultralow-power hysteresis (700 nA IQ, 50 mA) or low-noise PWM (300 mA, 0.8 V reference); Channel 3 is a dedicated high-side load switch with quick output discharge, UVLO, OCP, and TSD protection.

All channels share a common 16-lead TSSOP_EP package with exposed pad for thermal dissipation, operate across −40°C to +125°C junction temperature, and support external synchronization (400 kHz–1.4 MHz) via the SYNC/MODE pin-enabling precise timing control and EMI reduction in noise-sensitive systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Input voltage range	2.7 V to 15.0 V - supports multi-cell alkaline/NiMH, LiMnO₂, and wide-input industrial sources without pre-regulation.
Quiescent current (hysteresis mode)	700 nA - enables >10-year battery life in always-on keep-alive applications like gas/water meter backup rails.
Channel 1 output current	800 mA - sufficient to power microcontrollers, sensors, and RF transceivers in portable equipment.
Channel 2 output options	Fixed 3.3 V (per R7 suffix) - factory-trimmed for stable low-noise supply to analog front-ends or ADC references.
Load switch R_DS(ON)	494 mΩ at V_OUT3 = 2.5 V - minimizes dropout and self-heating during domain isolation in battery-powered systems.
Switching frequency	600 kHz or 1.2 MHz (synchronizable) - balances efficiency, size, and EMI for compact PCB layouts.
Operating temperature	−40°C to +125°C - qualified for industrial and automotive-adjacent environments including metering enclosures.

Pinout & Package

ADP5310AREZN-3.3R7 is housed in a 16-lead TSSOP_EP package with exposed thermal pad soldered to PCB ground plane. Pin numbering follows standard top-view orientation; Pin 3 (NC) must remain unconnected.

Pin/Terminal	Circuit Role	Design Meaning
PVIN1 / PVIN2	Power inputs for Channels 1 & 2	Must be connected together; accepts full 2.7–15 V range-enables single-input system architecture.
EN1	Enable for Channel 1 buck	Logic-level control (VIH = 1.2 V) with soft-start activation-prevents inrush during MCU wake-up sequences.
SYNC/MODE	Frequency sync input & Channel 2 mode select	High = Channel 2 PWM (low ripple); Low = hysteresis (700 nA IQ); also accepts external clock up to 1.4 MHz.
PWRGD	Open-drain power-good flag	Asserts when Channel 1 output reaches 92% of nominal-used by host MCU for safe boot sequencing.
VOUT3	Channel 3 load switch output	Powered from Channel 2 output; enables isolated power domain control for peripherals or sensors.
AGND	Analog ground reference	Separate from PGND1/PGND2-critical for maintaining feedback accuracy and low-noise regulation.

Key Features

Feature	Design Value
Dual-mode Channel 2 regulator	Hysteresis mode delivers 700 nA IQ and 50 mA output for ultra-low-power standby; PWM mode delivers 300 mA with <10 mV_PP ripple at 0.8 V reference.
Factory-configured fixed 3.3 V output	R7 suffix confirms Channel 1 is factory-trimmed to 3.3 V ±1.5% over −40°C to +125°C-eliminates external resistor network and saves board space.
Integrated load switch with QOD	Enables fast, controlled power-down of downstream circuitry; prevents floating nodes and reduces leakage in sleep states.
Comprehensive protection suite	Includes UVLO (2.55 V rising threshold), overcurrent protection (1.26 A typical limit), and thermal shutdown (135°C) with 15°C hysteresis.
100% duty-cycle operation	Allows Channel 1 or 2 to pass input directly to output when VIN ≈ VOUT-maximizing efficiency in near-dropout conditions.

Applications

Energy Metering	Portable Medical Diagnostics
Use Scenario: Gas/water meters requiring decade-long battery life with periodic sensor readouts and wireless transmission bursts. IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 provides primary 3.3 V rail (Channel 1) for MCU and radio, ultralow-IQ hysteresis rail (Channel 2) for RTC and memory retention, and load-switched domain (Channel 3) for sensor excitation only during measurement. Use Value: 700 nA hysteresis IQ extends CR2032 battery life beyond 12 years; 100% duty cycle maintains regulation during low-VIN brownout events.	Use Scenario: Handheld blood glucose or ECG monitors powered by coin cells, requiring rapid wake-up and low-noise analog signal chains. IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 delivers clean 3.3 V (Channel 1) to MCU and display, low-noise 3.3 V PWM rail (Channel 2) to ADC reference and op-amps, and isolated 3.3 V (Channel 3) to biosensor interface. Use Value: ±1.5% output accuracy ensures consistent ADC scaling; low 0.8 V reference ripple (<10 mV_PP) preserves SNR in sub-16-bit measurements.
Keep-Alive Power Supplies	Industrial Sensor Nodes
Use Scenario: Remote IoT sensors using Li-SOCl₂ batteries that must retain configuration and real-time clock during 10+ year deployments. IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 Channel 2 in hysteresis mode powers RTC and SRAM; Channel 1 remains off until wake-up event; Channel 3 isolates non-critical peripherals. Use Value: 700 nA quiescent current enables >15-year operation on 2.4 Ah Li-SOCl₂ cell; internal UVLO prevents deep discharge damage.	Use Scenario: Factory-floor vibration or temperature sensors operating in harsh environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 regulates 3.3 V for microcontroller and digital interface (Channel 1), powers analog signal conditioning (Channel 2 PWM), and gates power to wireless module (Channel 3) only during transmission. Use Value: −40°C to +125°C junction rating ensures reliability in uncontrolled enclosures; robust OCP/TSD protects against field-induced fault conditions.

Energy Metering

Portable Medical Diagnostics

Use Scenario: Gas/water meters requiring decade-long battery life with periodic sensor readouts and wireless transmission bursts.

IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 provides primary 3.3 V rail (Channel 1) for MCU and radio, ultralow-IQ hysteresis rail (Channel 2) for RTC and memory retention, and load-switched domain (Channel 3) for sensor excitation only during measurement.

Use Value: 700 nA hysteresis IQ extends CR2032 battery life beyond 12 years; 100% duty cycle maintains regulation during low-VIN brownout events.

Use Scenario: Handheld blood glucose or ECG monitors powered by coin cells, requiring rapid wake-up and low-noise analog signal chains.

IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 delivers clean 3.3 V (Channel 1) to MCU and display, low-noise 3.3 V PWM rail (Channel 2) to ADC reference and op-amps, and isolated 3.3 V (Channel 3) to biosensor interface.

Use Value: ±1.5% output accuracy ensures consistent ADC scaling; low 0.8 V reference ripple (<10 mV_PP) preserves SNR in sub-16-bit measurements.

Keep-Alive Power Supplies

Industrial Sensor Nodes

Use Scenario: Remote IoT sensors using Li-SOCl₂ batteries that must retain configuration and real-time clock during 10+ year deployments.

IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 Channel 2 in hysteresis mode powers RTC and SRAM; Channel 1 remains off until wake-up event; Channel 3 isolates non-critical peripherals.

Use Value: 700 nA quiescent current enables >15-year operation on 2.4 Ah Li-SOCl₂ cell; internal UVLO prevents deep discharge damage.

Use Scenario: Factory-floor vibration or temperature sensors operating in harsh environments with wide ambient temperature swings.

IC Role / Device Role / Timing Role: ADP5310AREZN-3.3R7 regulates 3.3 V for microcontroller and digital interface (Channel 1), powers analog signal conditioning (Channel 2 PWM), and gates power to wireless module (Channel 3) only during transmission.

Use Value: −40°C to +125°C junction rating ensures reliability in uncontrolled enclosures; robust OCP/TSD protects against field-induced fault conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triple-rail power management applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS65218D0RSLR	Single 3.3 V buck (1 A), LDOs instead of second buck, no load switch; 48-pin VQFN; higher IQ (2.5 µA)	Targeted at AM335x/AM437x processors-not optimized for ultralow-IQ keep-alive use cases	Choose if processor-specific PMIC integration is required and hysteresis-mode IQ is not critical.
MAX20029ATPA/VY+	Dual 3.3 V bucks (600 mA each), no integrated load switch; 20-pin TQFN; IQ = 2.8 µA in skip mode	Designed for automotive infotainment-AEC-Q100 qualified but lacks hysteresis mode and QOD	Choose for automotive-grade dual-buck needs where load switching is implemented externally.

Compared with TPS65218D0RSLR and MAX20029ATPA/VY+, ADP5310AREZN-3.3R7 uniquely combines ultralow 700 nA hysteresis IQ, integrated load switch with QOD, and factory-fixed 3.3 V output in a compact 16-pin TSSOP_EP-making it optimal for long-life, space-constrained, battery-powered metering and portable medical designs.

Availability

ADP5310AREZN-3.3R7 is available at Aetrix Electronics and suitable for energy metering, portable medical diagnostics, and industrial sensor node applications requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for ADP5310AREZN-3.3R7 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The ADP5310 product line was designed specifically for ultralow-power, multi-rail power management in battery-operated utility and medical instrumentation-emphasizing quiescent current optimization, thermal robustness, and integration density.

FAQ

What is the fixed output voltage of the ADP5310AREZN-3.3R7?

The ADP5310AREZN-3.3R7 has Channel 1 factory-trimmed to deliver a fixed 3.3 V output with ±1.5% accuracy over −40°C to +125°C. This eliminates external feedback resistors and ensures stable MCU and peripheral supply without calibration-confirmed in Table 2 of the ADP5310 datasheet Rev. A.

How does the ADP5310AREZN-3.3R7 achieve 700 nA quiescent current?

The ADP5310AREZN-3.3R7 achieves 700 nA quiescent current by operating Channel 2 in hysteresis mode when the SYNC/MODE pin is held low. In this state, the regulator draws only 700 nA under zero load while delivering up to 50 mA-verified in Table 1 (IQ1) and Figure 23 of the ADP5310 datasheet Rev. A.

Does the ADP5310AREZN-3.3R7 include built-in protection features?

Yes, the ADP5310AREZN-3.3R7 integrates UVLO (2.55 V rising threshold), overcurrent protection (1.26 A typical peak limit for Channel 1), thermal shutdown (135°C), and short-circuit protection. These are documented in the General Description and Absolute Maximum Ratings sections of the ADP5310 datasheet Rev. A.

Can the ADP5310AREZN-3.3R7 synchronize its switching frequency to an external clock?

Yes, the ADP5310AREZN-3.3R7 supports external synchronization via the SYNC/MODE pin, accepting clock inputs from 400 kHz to 1.4 MHz. When used as SYNC input, it locks both buck regulators to the external source-reducing EMI and enabling deterministic timing, as specified in Table 1 (SYNCCLOCK) of the ADP5310 datasheet Rev. A.

What package type and thermal performance does the ADP5310AREZN-3.3R7 use?

The ADP5310AREZN-3.3R7 uses a 16-lead TSSOP_EP package with exposed thermal pad. Its thermal resistance is θ_JA = 39.14°C/W and θ_JC = 2.59°C/W (Table 4), enabling reliable operation up to +125°C junction temperature-validated in the Thermal Resistance and Absolute Maximum Ratings sections of the ADP5310 datasheet Rev. A.

ADP5310AREZN-3.3R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-TSSOP (0.173", 4.40mm Width) Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable (Fixed)

Number of Outputs:: 2

Voltage - Input (Min):: 2.7V

Voltage - Input (Max):: 15V

Voltage - Output (Min/Fixed):: 0.8V (3.3V)

Voltage - Output (Max):: 5V

Current - Output:: 50mA, 300mA, 800mA

Frequency - Switching:: 600kHz , 1.2GHz

Synchronous Rectifier:: No

Operating Temperature:: -40°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-TSSOP-EP

ADP5310AREZN-3.3R7 FAQ

1.How can I place an order for ADP5310AREZN-3.3R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADP5310AREZN-3.3R7 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 ADP5310AREZN-3.3R7 reliable?

The price and inventory of ADP5310AREZN-3.3R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADP5310AREZN-3.3R7 is usually 5 days.

3.What payment methods are accepted for ADP5310AREZN-3.3R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADP5310AREZN-3.3R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADP5310AREZN-3.3R7?

ADP5310AREZN-3.3R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADP5310AREZN-3.3R7 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 ADP5310AREZN-3.3R7?

For technical support, including ADP5310AREZN-3.3R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADP5310AREZN-3.3R7 requirements.

6.How does Aetrix verify that ADP5310AREZN-3.3R7 is sourced from the original manufacturer or authorized distributors?

All ADP5310AREZN-3.3R7 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 ADP5310AREZN-3.3R7 meets industry standards.

7.What is the process for return or replacement of ADP5310AREZN-3.3R7?

All ADP5310AREZN-3.3R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADP5310AREZN-3.3R7, 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 ADP5310AREZN-3.3R7 part is unused and in its original packaging.

Return procedure for ADP5310AREZN-3.3R7:

1.Submit a request within 90 days.

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

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