MAX38642A

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

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


Please check latest availability status for a specific part variant.

Description

The MAX3864xA/B are nanoPower family of ultra-low 330nA quiescent current buck (step-down) DC-DC converters operating from 1.8V to 5.5V input voltage and supporting 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 MAX3864xA/B are ideal for battery applications where long battery life is a must.

The MAX3864xA/B family utilizes a unique control scheme that allows ultra-low quiescent current and high efficiency over a wide output current range. 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 MAX3864xA/B devices are offered in a space-saving 1.42mm x 0.89mm 6-pin wafer-level package (WLP) (2 x 3 bumps, 0.4mm pitch), as well as a 2mm x 2mm, 6-pin µDFN package. All parts are specified from -40°C to +85°C.

Also see: nanoPower Technology ›

Design Solution: Make Your Small Asset Tracker Last Longer ›

MAX38640A, MAX38640B, MAX38641A, MAX38641B, MAX38642A, MAX38642B, MAX38643A, MAX38643B: Functional Diagram MAX38640A, MAX38640B, MAX38641A, MAX38641B, MAX38642A, MAX38642B, MAX38643A, MAX38643B: Functional Diagram Enlarge+

Key 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
    • Preprogrammed VOUT from 0.5V to 5V
    • Single Resistor Adjustable VOUT from 0.7V to 3.3V
    • ±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

Applications/Uses

  • 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
Part NumberVIN
(V)
VIN
(V)
VOUT1
(V)
VOUT1
(V)
Preset VOUT
(V)
Output Adjust. MethodIOUT1
(A)
Switch TypeSynchronous SwitchingDC-DC OutputsDesign ToolsPackage/PinsBudgetary
Price
minmaxminmaxSee Notes
MAX38640A NEW!1.85.50.75.50.5V to 5V
Preset
Resistor
0.175InternalYes1EE-Sim
THIN WLP/6
UDFN/6
$0.70 @1k
MAX38641A NEW!0.35-
THIN WLP/6
UDFN/6
-
MAX38642A NEW!0.35-
THIN WLP/6
UDFN/6
-
MAX38643A NEW!0.7-
THIN WLP/6
UDFN/6
-
See All Step-Down Switching Regulators (367)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX38640EVKIT#WLP: Evaluation Kit for the MAX38640,MAX38641, MAX38642, MAX38643 in WLP
Device   Fab Process   Technology   Sample size   Rejects   FIT at 25°C   FIT at 55°C  

Note : The failure rates are summarized by technology and mapped to the associated material part numbers. The failure rates are highly dependent on the number of units tested.

Quality Management System >
Environmental Management System >

 
Status:
Package:
Temperature:

Related Resources


MAXM17904
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17905
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17906
4.5V to 24V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15065
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15066
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15067
4.5V to 60V, 300mA Step-Down uSLIC Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAX20010C
Automotive Single 6A Step-Down Converters

  • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
  • High-Precision Voltage Regulator for Applications Processors
  • Low-Noise Feature Reduces EMI

MAX20010D
Automotive Single 6A Step-Down Converters

  • Fully Integrated, Synchronous 6A DC-DC Converter Enables Small Solution Size
  • High-Precision Voltage Regulator for Applications Processors
  • Low-Noise Feature Reduces EMI

MAX20048
Automotive 40V, 55µA IQ, 2.2MHz, H-Bridge Buck-Boost Controller

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Efficient Solution in a Small Solutions Size
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements

MAX20039
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
  • High Switching Frequency Allows Use of Small External Components

MAX20040
Automotive, 2V to 36V, 2.2MHz, 0.6A/1.2A Buck-Boost Converters with Integrated H-Bridge Architecture

  • Meets Stringent Automotive Quality and Reliability Requirements
  • Low Quiescent Current Helps Designers Meet Stringent OEM Current Requirements (B and D version only)
  • High Switching Frequency Allows Use of Small External Components

MAX20029B
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029, MAX20029B, MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX20029C
Automotive Quad/Triple/Quad Low-Voltage Step-Down DC-DC Converters

  • Quad Step-Down DC-DC Converters with Integrated FETs
  • Operate from 3.0V to 5.5V Supply Voltage
  • 1.0V to 4.0V Fixed or Adjustable Output Voltage

MAX77827
5.5V Input, 1.8A/3.1A Switch Buck-Boost Converter with 6μA IQ

  • 1.8V to 5.5V Input Voltage Range
  • 2.3V to 5.3V Single Resistor Adjustable Output Voltage
  • 1.6A Maximum Output Current (3.1A ILIM Option, Buck Mode)

MAXM15465
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15466
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM15467
4.5V to 42V, 300mA Himalaya uSLIC Step-Down Power Module

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17624
2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAXM17623
2.9V to 5.5V, 1A Himalaya uSLIC Step-Down Power Modules

  • Easy to Use
  • High Efficiency
  • Flexible Design

MAX20049
Flexible, Compact Quad Power Supply with 2.2MHz, 500mA Buck Converters and Dual LDOs for Automotive Camera Modules

  • Small Solution Size
  • EMI Solutions
  • Self-Protected and Robust

MAX17673
Integrated 4.5V to 60V Synchronous 1.5A HV Buck and Dual 2.7V to 5.5V, 1A Buck Regulators

  • Reduces External Components and Total Cost
  • Integrates Three DC-DC Regulators
  • Reduces Power Dissipation

MAX77813
High-Efficiency Buck-Boost Converter

  • VIN Range: 2.30V to 5.5V
  • VOUT Range: 2.60V to 5.14V (I2C Programmable in 20mV Step)
  • Up to 2A Output Current in Boost Mode (VIN = 3.0V, VOUT = 3.4V, ILIM = High)