MAX38643
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MAX38643

Tiny 1.8V to 5.5V Input, 330nA IQ, 700mA nanoPower Buck Converter

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Extends Battery life - 330nA Quiescent Current, 5nA Shutdown Current and 96% Peak Efficiency

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Part Details
Part Models 6
1ku List Price Starting From $0.92
Features
  • Extends Battery Life
    • 330nA Ultra-Low Quiescent Supply Current
    • 5nA Shutdown Current
    • 96% Peak Efficiency and over 88% at 10μA
  • Easy to Use – Addresses Popular Operation
    • 1.8V to 5.5V Input Range
    • Single Resistor-Adjustable VOUT from 0.7V to 3.3V (A-Option)
    • Preprogrammed VOUT from 0.5V to 5.0V (B-Option)
    • ±1.75% Output Voltage Accuracy
    • Up to 175mA/350mA/700mA Load Current
  • Protects System in Multiple Use Cases
    • Reverse-Current Blocking in Shutdown
    • Optional Active Discharge Feature
  • Reduces Size and Increases Reliability
    • -40°C to +85°C Temperature Range
    • 2mm x 2mm 6-pin µDFN Package
    • 1.42mm x 0.89mm, 0.4mm Pitch 6-pin (2 x 3) WLP
Additional Details
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The MAX38640–MAX38643 are nanoPower family of ultra-low 330nA quiescent current buck (step-down) DC-DC converters that operate from 1.8V to 5.5V input voltage and support load currents of up to 175mA, 350mA, 700mA with peak efficiencies of 96%. While in shutdown, there is only 5nA of shutdown current. The devices offer ultra-low quiescent current, small total solution size, and high efficiency throughout the load range. The MAX38640–MAX38643 are ideal for battery applications where long battery life is a must.

The MAX38640–MAX38643 family utilizes a unique control scheme that allows ultra-low quiescent current and high efficiency over a wide output current range. The MAX38642 excludes active discharge resistor in shutdown which allows the output to be regulated or held high by another source or by the charged output capacitor.

The MAX38640–MAX38643 devices are offered in a space-saving 1.42mm x 0.89mm 6-pin WLP (2 x 3 bump, 0.4mm pitch), as well as a 2mm x 2mm, 6-pin µDFN package. All parts are specified over the -40°C to +85°C extended temperature range.

Applications

  • Portable, Space-Constrained Consumer Products
  • Single Li-ion (Li+) and Coin Cell Battery Products
  • Wearable Devices, Ultra-Low-Power IoT, NB IoT, and Bluetooth® LE
  • Wired or Wireless Industrial Products
Part Models 6
1ku List Price Starting From $0.92

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Documentation

Documentation

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Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
MAX38643AELT+
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MAX38643BENT185+
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Product Lifecycle

PCN

Feb 5, 2020

- 1969B

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MAX38643AELT+

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Software & Part Ecosystem

Software & Part Ecosystem

Evaluation Kit

Evaluation Kits 10

MAX38642AEVK-UDFN

Evaluation Kit for the MAX38642 A in μDFN

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MAX38642AEVK-UDFN

Evaluation Kit for the MAX38642 A in μDFN

Evaluation Kit for the MAX38642 A in μDFN

Features and Benefits

  • Evaluates the MAX38642A in a 6-pin µDFN
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 350mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38642A evaluation kit (EV kit) evaluates the MAX38642A, an ultra-low quiescent current step-down DC-DC converter in the µDFN package. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 350mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38642AELT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38641AEVK-UDFN

Evaluation Kit for the MAX38641 A in μDFN

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MAX38641AEVK-UDFN

Evaluation Kit for the MAX38641 A in μDFN

Evaluation Kit for the MAX38641 A in μDFN

Features and Benefits

  • Evaluates the MAX38641A in a 6-pin µDFN
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 350mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38641A evaluation kit (EV kit) evaluates the MAX38641A, an ultra-low quiescent current step-down DC-DC converter in the µDFN package. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 350mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38641AELT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38641AEVK-WLP

Evaluation Kit for the MAX38641 A in WLP

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MAX38641AEVK-WLP

Evaluation Kit for the MAX38641 A in WLP

Evaluation Kit for the MAX38641 A in WLP

Features and Benefits

  • Evaluates the MAX38641A in a 6-Pin WLP
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 350mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38641A evaluation kit (EV kit) evaluates the MAX38641A, an ultra-low quiescent current step-down DC-DC converter in a WLP. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 350mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38641AENT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38643AEVK-WLP

Evaluation Kit for the MAX38643 A in WLP

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MAX38643AEVK-WLP

Evaluation Kit for the MAX38643 A in WLP

Evaluation Kit for the MAX38643 A in WLP

Features and Benefits

  • Evaluates the MAX38643A in a 6-pin WLP
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 700mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38643A evaluation kit (EV kit) evaluates the MAX38643A, an ultra-low quiescent current step-down DC-DC converter in the wafer-level package (WLP). The EV kit operates over an input range of 1.8V to 5.5V, and provides resistor-configurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 700mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38643AENT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38640AEVK-WLP

Evaluation Kit for the MAX38640 A in WLP

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MAX38640AEVK-WLP

Evaluation Kit for the MAX38640 A in WLP

Evaluation Kit for the MAX38640 A in WLP

Features and Benefits

  • Evaluates the MAX38640A in a 6-pin WLP
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 175mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38640A evaluation kit (EV kit) evaluates the MAX38640A, an ultra-low quiescent current step-down DC-DC converter in a WLP. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 175mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38640AENT+ installed.

MAX38640EVKIT-WLP

Evaluation Kit for the MAX38640, MAX38641, MAX38642, MAX38643 in WLP

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MAX38640EVKIT-WLP

Evaluation Kit for the MAX38640, MAX38641, MAX38642, MAX38643 in WLP

Evaluation Kit for the MAX38640, MAX38641, MAX38642, MAX38643 in WLP

Features and Benefits

  • Evaluates the MAX38640/1/2/3 A/B IC Family in a 6-pin WLP
  • 1.8V to 5.5V Input Range
  • 0.7V to 3.3V Configurable Output Voltage
  • Up to 175mA/350mA/700mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38640 evaluation kit (EV kit) evaluates the MAX38640/1/2/3 A/B IC family of ultra-low quiescent current step-down DC-DC converters in the wafer-level package (WLP) . The EV kit operates over an input range of 1.8V to 5.5V, and provides resistor-configurable output voltages from 0.7V to 3.3V. The EV kit delivers up to 175mA/350mA/700mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38640AENT+ installed.

MAX38643AEVK-UDFN

Evaluation Kit for the MAX38643 A in μDFN

zoom

MAX38643AEVK-UDFN

Evaluation Kit for the MAX38643 A in μDFN

Evaluation Kit for the MAX38643 A in μDFN

Features and Benefits

  • Evaluates the MAX38643A in a 6-Pin µDFN
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 700mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38643A evaluation kit (EV kit) evaluates the MAX38643A, an ultra-low quiescent current step-down DC-DC converter in the µDFN package. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 700mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38643AELT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38642AEVK-WLP

Evaluation Kit for the MAX38642 A in WLP

zoom

MAX38642AEVK-WLP

Evaluation Kit for the MAX38642 A in WLP

Evaluation Kit for the MAX38642 A in WLP

Features and Benefits

  • Evaluates the MAX38642A in a 6-Pin WLP
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 350mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38642A evaluation kit (EV kit) evaluates the MAX38642A, an ultra-low quiescent current step-down DC-DC converter in a WLP. The EV kit operates over an input range of 1.8V to 5.5V, and provides resistorconfigurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 350mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38642AENT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAX38640AEVK-UDFN

Evaluation Kit for the MAX38640 A in μDFN

zoom

MAX38640AEVK-UDFN

Evaluation Kit for the MAX38640 A in μDFN

Evaluation Kit for the MAX38640 A in μDFN

Features and Benefits

  • Evaluates the MAX38640A IC in a 6-pin µDFN
  • 1.8V to 5.5V Input Range
  • 1.0V to 3.3V Configurable Output Voltage
  • Up to 175mA Output Current
  • Proven 2-Layer 1oz Copper PCB Layout
  • Demonstrates Compact Solution Size
  • Fully Assemble and Tested

Product Detail

The MAX38640A evaluation kit (EV kit) evaluates the MAX38640A, an ultra-low quiescent current step-down DC-DC converter in theµDFN package. The EV kit operates over an input rangeof 1.8V to 5.5V, and provides resistor-configurable output voltages from 1.0V to 3.3V. The EV kit delivers up to 175mA of current depending on the input voltage to the output voltage ratio.

The EV kit comes with the MAX38640AELT+ installed.

Applications

  • Portable Space-Constrained Consumer Products
  • Single Li-ion and Coin Cell Battery Products
  • Wearable devices, Ultra-Low-Power IoT, NB IoT, and BLE
  • Wired, Wireless, Industrial Products

MAXESSENTIAL02EP

Essential Analog Efficient Power Toolkit for the MAXM38643 / MAX38640 / MAX77839 / MAXM17225 / MAX17227A / MAX38889 / MAX38902C / MAX38913 / MAX77827

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MAXESSENTIAL02EP

Essential Analog Efficient Power Toolkit for the MAXM38643 / MAX38640 / MAX77839 / MAXM17225 / MAX17227A / MAX38889 / MAX38902C / MAX38913 / MAX77827

Essential Analog Efficient Power Toolkit for the MAXM38643 / MAX38640 / MAX77839 / MAXM17225 / MAX17227A / MAX38889 / MAX38902C / MAX38913 / MAX77827

Features and Benefits

  • Enables Immediate Testing of Nine Different Power Solutions
  • Includes nanoPower Buck and Boost Converters and Modules, Buck/Boost Converter, LDOs, and Continua Supercapacitor Backup Power Controller
  • Boards Designed to Accept 0.100” (2.54mm) Header Pin Strips for Mounting on Breadboards
  • Through Holes Accept Test Points for Connecting to Benchtop Equipment

Product Detail

The MAXESSENTIAL02EP Essential Analog Efficient Power toolkit delivers products on ready-to-use boards for immediate testing and prototyping. The Essential Analog Efficient Power toolkit features products from the Buck, Boost, Buck-Boost, LDO, and Continua™ product categories. The selection also features nanoPower switching converter and module options.

Tools & Simulations

Tools & Simulations 1

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