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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc. ADM6348-43ARTZ-R7

Name: ADM6348-43ARTZ-R7
Brand: Analog Devices Inc.
SKU: ADM6348-43ARTZ-R7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADM6348-43ARTZ-R7

Manufacturer:: Analog Devices Inc.

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: ADM6348-43ARTZ-R7.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-3

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Product details

Overview

ADM6348-43ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 4.3 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 1 µA max supply current, and 100 ms minimum reset timeout-used for reliable power-up sequencing in portable microprocessor systems.

For engineers reviewing the ADM6348-43ARTZ-R7 datasheet, ADM6348-43ARTZ-R7 pinout, ADM6348-43ARTZ-R7 application, or ADM6348-43ARTZ-R7 equivalent, key selection criteria include open-drain output compatibility with bidirectional reset pins, guaranteed RESET assertion down to 1 V VCC, glitch immunity against negative-going transients, and precise 4.3 V threshold with 9.5 mV hysteresis.

Technical Context

The ADM6348-43ARTZ-R7 implements a precision bandgap-based voltage comparator with internal 100 ms (min) / 185 ms (typ) reset timeout timer and built-in hysteresis (9.5 mV) to prevent chatter during brownout recovery. Its open-drain RESET output requires an external pull-up resistor and remains functional down to VCC = 1 V.

It delivers ultralow ICC (≤1.75 µA at 5.5 V) and exhibits 40 ppm/°C temperature coefficient on the 4.3 V threshold, with glitch immunity validated up to 100 V/µs dVCC/dt and transient rejection defined by Figure 5 (max pulse duration vs. overdrive).

Key Specifications

Parameter	Value and Actual Design Meaning
Reset Threshold	4.3 V ±2.5% (4.235 V to 4.364 V at 25°C); ensures accurate detection of 4.3 V rail collapse before downstream logic fails.
Supply Current	≤1.75 µA at VCC = 5.5 V; enables multi-year battery life in always-on portable equipment.
Reset Timeout	100–280 ms (min–max); holds microprocessor in reset long enough for 4.3 V rail stabilization after power-up.
Output Type	Active-low open-drain; supports wired-OR reset buses and bidirectional microprocessor reset pins with external pull-up.
VCC Operating Range	1.0 V to 5.5 V; guarantees valid RESET assertion even during deep brownout conditions.
Hysteresis	9.5 mV; prevents oscillation during slow VCC recovery near 4.3 V threshold.
Temperature Range	−40°C to +85°C; qualified for industrial and extended-temperature embedded applications.

Pinout & Package

ADM6348-43ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance, surface-mount footprint (2.90 mm × 1.30 mm), and lead-free (RoHS-compliant) finish.

Pin/Terminal	Circuit Role	Design Meaning
GND (Pin 1)	Ground reference	0 V return path for internal comparator and reset generator; must be low-impedance connection to system ground plane.
RESET (Pin 2)	Active-low open-drain output	Sinks up to 1.6 mA when asserted; requires external pull-up resistor to host VCC or logic rail for proper level translation.
VCC (Pin 3)	Monitored supply input	Connects directly to 4.3 V rail being supervised; powers internal circuitry and enables reset assertion down to 1 V.

Key Features

Feature	Design Value
Ultralow ICC	≤1.75 µA at 5.5 V enables use in energy-harvesting and coin-cell-powered systems without compromising supervision integrity.
Glitch immunity	Validated against fast negative-going VCC transients up to 100 V/µs-prevents spurious resets during switching noise or load dump events.
Open-drain RESET	Allows direct interface with microprocessors having bidirectional reset pins (e.g., ARM Cortex-M series) using single pull-up resistor.
1 V minimum VCC operation	Ensures reset remains active through deep brownout, protecting firmware execution until stable 4.3 V rail is restored.
14-threshold family support	Part of ADM6348 series covering 3.3 V–4.63 V rails; simplifies BOM consolidation across multiple voltage domains.

Applications

Telecommunications Baseband Modules	Industrial PLC I/O Cards
Use Scenario: Supervising 4.3 V FPGA configuration power rail in LTE small cell baseband units operating in unregulated outdoor enclosures. IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout protection for Xilinx Zynq-7000 SoC configuration logic. Use Value: Prevents partial FPGA bitstream loading due to unstable 4.3 V rail, eliminating boot failures under thermal cycling and line sag.	Use Scenario: Monitoring 4.3 V isolated auxiliary supply powering analog front-end ADCs and digital isolators on modular PLC I/O boards. IC Role / Device Role / Timing Role: Reset generator ensuring synchronized release of ADC control logic and isolation barrier initialization after power-up. Use Value: Eliminates ADC data corruption during cold start by enforcing ≥100 ms delay before SPI interface activation.
Portable Medical Diagnostic Handhelds	Automotive Infotainment Power Sequencing
Use Scenario: Supervising 4.3 V rail feeding low-power ARM Cortex-M4 MCU and BLE radio in FDA-cleared point-of-care ultrasound devices. IC Role / Device Role / Timing Role: Open-drain reset supervisor interfacing with MCU's bidirectional nRESET pin via 10 kΩ pull-up to 3.3 V I/O domain. Use Value: Enables safe dual-rail reset coordination (4.3 V core + 3.3 V I/O) without level shifters, reducing component count and layout area.	Use Scenario: Monitoring backup 4.3 V supply for real-time clock and CAN controller nonvolatile registers during main 5 V rail brownout. IC Role / Device Role / Timing Role: Dedicated supervisor asserting reset to CAN transceiver and RTC when 4.3 V rail drops below 4.235 V. Use Value: Guarantees atomic register save before power loss, preserving CAN bus state and timekeeping across ignition cycles.

Telecommunications Baseband Modules

Industrial PLC I/O Cards

Use Scenario: Supervising 4.3 V FPGA configuration power rail in LTE small cell baseband units operating in unregulated outdoor enclosures.

IC Role / Device Role / Timing Role: Voltage supervisor providing power-on reset and brownout protection for Xilinx Zynq-7000 SoC configuration logic.

Use Value: Prevents partial FPGA bitstream loading due to unstable 4.3 V rail, eliminating boot failures under thermal cycling and line sag.

Use Scenario: Monitoring 4.3 V isolated auxiliary supply powering analog front-end ADCs and digital isolators on modular PLC I/O boards.

IC Role / Device Role / Timing Role: Reset generator ensuring synchronized release of ADC control logic and isolation barrier initialization after power-up.

Use Value: Eliminates ADC data corruption during cold start by enforcing ≥100 ms delay before SPI interface activation.

Portable Medical Diagnostic Handhelds

Automotive Infotainment Power Sequencing

Use Scenario: Supervising 4.3 V rail feeding low-power ARM Cortex-M4 MCU and BLE radio in FDA-cleared point-of-care ultrasound devices.

IC Role / Device Role / Timing Role: Open-drain reset supervisor interfacing with MCU's bidirectional nRESET pin via 10 kΩ pull-up to 3.3 V I/O domain.

Use Value: Enables safe dual-rail reset coordination (4.3 V core + 3.3 V I/O) without level shifters, reducing component count and layout area.

Use Scenario: Monitoring backup 4.3 V supply for real-time clock and CAN controller nonvolatile registers during main 5 V rail brownout.

IC Role / Device Role / Timing Role: Dedicated supervisor asserting reset to CAN transceiver and RTC when 4.3 V rail drops below 4.235 V.

Use Value: Guarantees atomic register save before power loss, preserving CAN bus state and timekeeping across ignition cycles.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6342HUT+T	4.33 V threshold (±2.5%), 1.2 µA ICC, SOT-23-3, open-drain, but only rated −40°C to +85°C with 140 ms typical timeout.	Lacks guaranteed 1 V VCC operation; RESET invalid below 1.2 V-unsuitable for deep brownout detection.	Select when tighter 4.33 V threshold tolerance is required and brownout depth >1.2 V is acceptable.
TPS3808G33DBVR	3.3 V fixed threshold, push-pull output, 1.1 µA ICC, SOT-23-6, −40°C to +125°C, but incompatible pinout and no 4.3 V option.	Requires PCB redesign (6-pin vs. 3-pin) and cannot monitor 4.3 V rail without external resistor divider-adds error and leakage.	Choose only if higher temperature rating (125°C) is mandatory and system can accommodate 6-pin layout and threshold scaling.

Compared with MAX6342HUT+T and TPS3808G33DBVR, ADM6348-43ARTZ-R7 uniquely combines 4.3 V precision, open-drain output, 1 V minimum VCC operation, and 3-pin SOT-23 footprint-enabling drop-in replacement in space-constrained, deep-brownout-sensitive designs without layout or bill-of-material changes.

Availability

ADM6348-43ARTZ-R7 is available at Aetrix Electronics and suitable for telecommunications baseband modules, industrial PLC I/O cards, and portable medical diagnostic handhelds requiring stable component supply with full RoHS compliance and traceable lot documentation.

Supply support for ADM6348-43ARTZ-R7 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, serving industrial, automotive, communications, and healthcare markets since 1965.

ADM6348 belongs to Analog Devices' Single-Supply Voltage Supervisor product line, engineered specifically for ultralow-power, precision reset generation in battery-operated and thermally demanding embedded systems with strict board space constraints.

FAQ

What is the exact reset threshold voltage of ADM6348-43ARTZ-R7 at 25°C?

The ADM6348-43ARTZ-R7 has a nominal reset threshold of 4.3 V at 25°C, with a guaranteed range of 4.235 V to 4.364 V (±2.5%). This value is specified in Table 2 of the Rev. B datasheet and applies strictly to the ADM6348-43 variant-not other members of the ADM6348 family.

Does ADM6348-43ARTZ-R7 support operation below 2.0 V VCC?

Yes, ADM6348-43ARTZ-R7 guarantees valid RESET assertion down to VCC = 1.0 V, as confirmed in the Absolute Maximum Ratings table and General Description section. This allows reliable brownout detection even when the 4.3 V rail collapses deeply-critical for fail-safe shutdown in portable systems.

What external components are required for ADM6348-43ARTZ-R7 to function?

ADM6348-43ARTZ-R7 requires only one external component: a pull-up resistor on the RESET pin (Pin 2). Typical values range from 4.7 kΩ to 10 kΩ to the target logic rail (e.g., 3.3 V or 5 V). No capacitors, dividers, or additional ICs are needed-the device is fully self-contained.

Is ADM6348-43ARTZ-R7 pin-compatible with other ADM63xx devices in SOT-23-3?

Yes, all ADM6326/ADM6328/ADM6346/ADM6348 variants-including ADM6348-43ARTZ-R7-share identical 3-lead SOT-23-3 (RT-3) pinout (GND, RESET, VCC) and footprint. This enables direct substitution within the same reset threshold family without PCB modification.

What is the maximum sink current capability of the ADM6348-43ARTZ-R7 RESET pin?

The ADM6348-43ARTZ-R7 RESET pin can sink up to 1.6 mA while maintaining VOL ≤ 0.3 V (at VCC > 2.1 V), as specified in the "RESET OUTPUT VOLTAGE LOW" parameter. At lower VCC (≥1.2 V), it sinks 100 µA with VOL ≤ 0.4 V-sufficient to drive standard CMOS inputs and most microcontroller reset pins.

ADM6348-43ARTZ-R7 Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Cut Tape (CT)

Product Status:: Active

Programmable:: Not Verified

Type:: Simple Reset/Power-On Reset

Number of Voltages Monitored:: 1

Voltage - Threshold:: 4.3V

Output:: Open Drain or Open Collector

Reset:: Active Low

Reset Timeout:: 100ms Minimum

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ADM6348-43ARTZ-R7 FAQ

1.How can I place an order for ADM6348-43ARTZ-R7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADM6348-43ARTZ-R7 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 ADM6348-43ARTZ-R7 reliable?

The price and inventory of ADM6348-43ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6348-43ARTZ-R7 is usually 5 days.

3.What payment methods are accepted for ADM6348-43ARTZ-R7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6348-43ARTZ-R7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ADM6348-43ARTZ-R7?

ADM6348-43ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADM6348-43ARTZ-R7 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 ADM6348-43ARTZ-R7?

For technical support, including ADM6348-43ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6348-43ARTZ-R7 requirements.

6.How does Aetrix verify that ADM6348-43ARTZ-R7 is sourced from the original manufacturer or authorized distributors?

All ADM6348-43ARTZ-R7 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 ADM6348-43ARTZ-R7 meets industry standards.

7.What is the process for return or replacement of ADM6348-43ARTZ-R7?

All ADM6348-43ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6348-43ARTZ-R7, 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 ADM6348-43ARTZ-R7 part is unused and in its original packaging.

Return procedure for ADM6348-43ARTZ-R7:

1.Submit a request within 90 days.

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

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