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Application Notes

Over 2000 application notes and technical articles written by engineers, for engineers.
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Newest Appnotes

Fuel-Gauge Circuits
General

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App Note 4406 Abstract
Power Supply Features Low V_IN and V_OUT

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PDF (70K)

App Note 4410 Abstract
Battery Backup with Delay

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PDF (55K)

App Note 3906 Abstract
Creating a Bidirectional Current-Sense Amplifier from Two Unidirectional Current-Sense Amplifiers

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PDF (208K)

App Note 3741 Abstract
Analog ICs for Low Voltage Systems

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PDF (136K)

App Note 3227 Abstract
Power-On Reset and Related Supervisory Functions

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PDF (22K)

App Note 2989 Abstract
Match the Battery to the Application to Avoid Disappointment

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PDF (190K)

App Note 3166 Abstract
Source Resistance: The Efficiency Killer in DC-DC Converter Circuits

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PDF (146K)

App Note 2879 Abstract
Selecting the Optimum Voltage Reference

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PDF (237K)

App Note 2412 Abstract
Characterizing a Li+ Cell for Use With a Fuel Gauge

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PDF (33K)

App Note 2011 Abstract
High-Side Positive Current Sensor Monitors Negative Supply

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PDF (21K)

App Note 1987 Abstract
Auto-Retry Controller Suits Telecom Applications

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PDF (31K)

App Note 1872 Abstract
Low-Battery Indicator Is Low Cost, Highly Efficient, and Environmentally Friendly

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App Note 165 Abstract
Interfacing the DS2760 1-Wire High-Precision Li-Ion Battery Monitor and Protection IC in a Microcontroller Environment

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App Note 905 Abstract
Adding POR Function to the MAX1864 Generating Two Outputs

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App Note 120 Abstract
Using an API to Control the DS1WM 1-Wire® Bus Master

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App Note 956 Abstract
Analog Switch Lowers Relay Power Consumption

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PDF (63K)

App Note 912 Abstract
Turn-On Switching Loss of An Asynchronous Buck Converter

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PDF (63K)

App Note 909 Abstract
The MAX1802 for Digital Still Camera from 2AA Batteries

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App Note 906 Abstract
The MAX1864 Generates 1.2V or Lower Output Voltage

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PDF (40K)

App Note 891 Abstract
Dual 1.4MHz Synchronous Buck Regulator Supports USB Dying Gasp Applications

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App Note 718 Abstract
Properties of the Charge-Pump Voltage Splitter

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App Note 850 Abstract
Flyback Circuit Powers Broadband Phone Networks

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PDF (69K)

App Note 842 Abstract
Mathcad Calculates Input Capacitor for Step-Down Buck Regulator

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App Note 669 Abstract
Charge Pumps Shine in Portable Designs

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App Note 662 Abstract
Power Conservation in 3V/5V Dual-Supply Systems

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App Note 660 Abstract
Regulator Topologies For Battery-Powered Systems

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App Note 652 Abstract
Synchronous Rectification Aids Low-Voltage Power Supplies

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App Note 665 Abstract
Flyback Converter Serves Battery-Powered CCD Applications

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App Note 658 Abstract
Ultra-Thin DC-DC Converters Suit Compact PCMCIA Cards

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App Note 636 Abstract
Reverse-Current Circuitry Protection

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App Note 666 Abstract
Versatile ICs Enable Chemistry-Independent Battery Charging

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PDF (109K)

App Note 667 Abstract
Power Efficiency in Next-Generation CPUs Tied to MOSFET Choice

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App Note 663 Abstract
Proper Handling Helps Make the Most of Li-Ion Batteries

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App Note 668 Abstract
Managing Noise in Cell-Phone Handsets

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PDF (98K)

App Note 653 Abstract
Circuit Tradeoffs Minimize Noise in Battery-Input Power Supplies

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PDF (59K)

App Note 664 Abstract
Feedback Isolation Augments Power-Supply Safety and Performance

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PDF (67K)

App Note 715 Abstract
A Smart Solid-State Fuse Cures Boost-Converter Ills

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PDF (71K)

App Note 675 Abstract
Powering Portable CPU Cores

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PDF (33K)

App Note 674 Abstract
Push-Pull Driver Provides Isolated 5V at 1A

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PDF (33K)

App Note 1763 Abstract
Dual-Voltage Supply Powers SIM Card

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PDF (52K)

App Note 657 Abstract
Simple Circuit Disconnects Load

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PDF (53K)

App Note 690 Abstract
High-Voltage PWM Controller Yields Small, Efficient Telecom/Datacom Supplies

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PDF (103K)

App Note 670 Abstract
Power-Supply IC Accommodates Dual-Voltage Portable Systems

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PDF (177K)

App Note 671 Abstract
Energy Management for Small Portable Systems

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App Note 676 Abstract
New Developments in Battery Chargers

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PDF (58K)

App Note 10 Abstract
Lower Operating Frequency Improves ICL7660 Voltage-Conversion Efficiency

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App Note 35 Abstract
Regulated Charge Pump Delivers 50mA

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PDF (41K)

App Note 28 Abstract
Low-Power DC-DC Converter Derives 5V From 3V Battery

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App Note 1 Abstract
MOSFET Pass Element Yields 100mV-Dropout Regulator

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PDF (39K)

App Note 515 Abstract
Dual Boost Regulator Handles Heavy Surge Currents

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PDF (176K)

App Note 924 Abstract
Step-Up Supply Charges Battery While Serving Load

Battery Chargers

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PDF (89K)

App Note 4322 Abstract
Simplified Lithium-Ion (Li+) Battery-Charger Testing

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PDF (64K)

App Note 4215 Abstract
Estimating Switching Speed for the DS2712 NiMH Battery Charger

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PDF (66K)

App Note 4214 Abstract
Estimating Switching Speed for the DS2715 NiMH Battery Charger

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PDF (118K)

App Note 4181 Abstract
Simplify the Design of 1-Cell Li+ Battery-Operated Devices

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PDF (84K)

App Note 4169 Abstract
Understanding Li+ Battery Operation Lessens Charging Safety Concerns

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PDF (116K)

App Note 3999 Abstract
Overview of Rechargeable Batteries and Fast Stand-Alone Chargers

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PDF (24K)

App Note 3959 Abstract
Using an nMOS Transistor with the DS2714

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PDF (49K)

App Note 3841 Abstract
Improving Accuracy of the MAX1737 Lithium-Ion Battery Charger

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PDF (128K)

App Note 3607 Abstract
Charging Batteries from USB

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PDF (57K)

App Note 3623 Abstract
Battery-Charger PWM Input Has Watchdog Protection

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PDF (117K)

App Note 3501 Abstract
Rechargeable Batteries: Basics, Pitfalls, and Safe Recharging Practices

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PDF (37K)

App Note 3388 Abstract
Detecting Primary Cells with the DS2711/12

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PDF (33K)

App Note 1815 Abstract
Add Current Boost to USB Charger Driven by an AC Adapter

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PDF (45K)

App Note 960 Abstract
Portable Supply Derives +5V and +3.3V Power from USB Port

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App Note 716 Abstract
Proper Layout and Component Selection Controls EMI

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PDF (56K)

App Note 913 Abstract
Switch-Mode, Linear, and Pulse Charging Techniques for Li+ Battery in Mobile Phones and PDAs

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PDF (131K)

App Note 680 Abstract
How to Design Battery Charger Applications that Require External Microcontrollers and Related System-Level Issues

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PDF (106K)

App Note 1014 Abstract
Design Case Study: Designing a Power Supply for a Portable, Wireless Contact Manager

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PDF (45K)

App Note 967 Abstract
How to Minimize Power Dissipation in Li+ Linear Chargers

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PDF (79K)

App Note 897 Abstract
Single-Cell Li+ Cradle Charger With A Linear AC Adapter

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PDF (60K)

App Note 908 Abstract
Ultra-Low Resistance Surface Mount Current Shunts

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PDF (47K)

App Note 721 Abstract
Portable Devices Need High-Performance Battery Chargers

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App Note 936 Abstract
Add-On Circuit Preconditions Battery before Charging

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PDF (46K)

App Note 621 Abstract
Simple Circuit Charges Lead-Acid Batteries

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PDF (199K)

App Note 981 Abstract
Choices for Battery-Charging System Architecture

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PDF (47K)

App Note 344 Abstract
Input Current Limiting in Battery Chargers for Mobile Computing Applications

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PDF (47K)

App Note 476 Abstract
Comparing the I²C Bus to the SMBus

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PDF (69K)

App Note 484 Abstract
Harnessing Solar Power with Smart Power-Conversion Techniques

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PDF (125K)

App Note 414 Abstract
Battery Charger Regulates Input Voltage

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PDF (34K)

App Note 523 Abstract
Quick-Charge IC Routes Step-Up Switcher Output To Battery

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PDF (1369K)

App Note 426 Abstract
One-Hour Battery Charger Has Switch-Mode PWM Control

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App Note 113 Abstract
Boost DC-DC Voltage Regulator Converts To Current Source for Battery Charging

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PDF (42K)

App Note 149 Abstract
Battery Charger Indicates Trickle Or Fast Charge

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PDF (33K)

App Note 179 Abstract
Step-Up/Step-Down Current Source Charges Batteries

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PDF (57K)

App Note 851 Abstract
Battery Charger Delivers 2.5A With >96% Efficiency

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PDF (38K)

App Note 543 Abstract
Switch-Mode Supply Charges Battery While Serving Load

Battery Protection

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PDF (40K)

App Note 4349 Abstract
Designing the DS2726 to Protect Li+ Batteries During a Reverse Charger Event

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PDF (23K)

App Note 4219 Abstract
Protection Circuitry for Reversed Charger Connections to the DS2784 High-Side nFET Protector

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PDF (84K)

App Note 4169 Abstract
Understanding Li+ Battery Operation Lessens Charging Safety Concerns

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PDF (32K)

App Note 4062 Abstract
Understanding the DS2784's Undervoltage-Protection Delay (t_UVD)

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PDF (101K)

App Note 3744 Abstract
Circuit Enables Single NiMH Cell to Simulate a Lithium Battery

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PDF (117K)

App Note 3501 Abstract
Rechargeable Batteries: Basics, Pitfalls, and Safe Recharging Practices

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PDF (357K)

App Note 3225 Abstract
Waking up a DS2761/DS2762

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PDF (137K)

App Note 3064 Abstract
Powering up a DS2761

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PDF (147K)

App Note 3065 Abstract
Powering up a DS2762

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PDF (78K)

App Note 2420 Abstract
1-Wire Communication with a Microchip PICmicro Microcontroller

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PDF (28K)

App Note 2012 Abstract
MOSFET Driver Is Reverse-Battery Protected

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PDF (37K)

App Note 2015 Abstract
Overcurrent/Overdischarge Protection for Lead-Acid Batteries

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PDF (53K)

App Note 224 Abstract
Calibrating the Offset Register of the DS2761

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PDF (29K)

App Note 221 Abstract
DS276x Product Comparison

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PDF (60K)

App Note 908 Abstract
Ultra-Low Resistance Surface Mount Current Shunts

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PDF (52K)

App Note 128 Abstract
Testing and Calibrating a DS2760 Li-Ion Battery Monitor and Protector Based Circuit

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PDF (25K)

App Note 480 Abstract
Circuit Provides Reverse-Battery Protection

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PDF (43K)

App Note 968 Abstract
Load-Disconnect Switch Consumes Only 8µA

Battery Selectors

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PDF (46K)

App Note 3889 Abstract
Using the DS2746 to Identify a Battery-Pack Based on an Identification Resistor

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PDF (39K)

App Note 3864 Abstract
The FET-OR Connection for Power Supplies

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PDF (43K)

App Note 143 Abstract
Multiple Battery Pack Applications Using the DS2760 or DS2761

Fuel-Gauge Circuits

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PDF (37K)

App Note 4224 Abstract
Using the DS2786 Battery Fuel Gauge in the Host Side of a 2-Cell Battery Application

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PDF (66K)

App Note 4189 Abstract
Characterizing a Lithium-Ion (Li+) Cell for Use with an Open-Circuit-Voltage (OCV) Based Fuel Gauge

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PDF (29K)

App Note 4141 Abstract
Programming and Testing a DS2786-Based Circuit

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PDF (29K)

App Note 4106 Abstract
Using the DS2786 Battery Fuel Gauge in a 2-Cell Battery Pack

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PDF (32K)

App Note 4062 Abstract
Understanding the DS2784's Undervoltage-Protection Delay (t_UVD)

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PDF (48K)

App Note 3992 Abstract
Interpreting the Open-Circuit-Voltage (OCV) Fuel Gauge of the DS2786

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PDF (89K)

App Note 3978 Abstract
Getting Started with the DS2786K

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PDF (98K)

App Note 3958 Abstract
Battery Fuel Gauges: Accurately Measuring Charge Level

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PDF (91K)

App Note 3874 Abstract
Simple Characterization Circuit for Rechargeable AA Cells

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PDF (46K)

App Note 3889 Abstract
Using the DS2746 to Identify a Battery-Pack Based on an Identification Resistor

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PDF (236K)

App Note 3463 Abstract
Getting Started with the DS2780

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PDF (15K)

App Note 3407 Abstract
Upgrading to the DS2762 from the DS2761

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PDF (41K)

App Note 3406 Abstract
DS2780 Board Layout to Minimize Current Measurement Offset Error

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PDF (357K)

App Note 3225 Abstract
Waking up a DS2761/DS2762

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PDF (32K)

App Note 3092 Abstract
Alternate DS2740U Application Circuit with Reduced Current Measurement Offset Error

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PDF (68K)

App Note 2416 Abstract
DS27xx Fuel Gauge Board Layout Techniques to Minimize Measurement Error

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PDF (78K)

App Note 2420 Abstract
1-Wire Communication with a Microchip PICmicro Microcontroller

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PDF (36K)

App Note 2096 Abstract
DS2740 High-Precision Coulomb Counter Reference Design

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PDF (34K)

App Note 2046 Abstract
Using the DS2751 Battery Fuel Gauge in Multiple-Cell Battery Pack Applications

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PDF (37K)

App Note 1949 Abstract
Bi-directional Current-Sense with Single Output

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PDF (63K)

App Note 1919 Abstract
Increasing the Fuel Gauge Dynamic Range

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PDF (42K)

App Note 231 Abstract
Compensating for Sense Resistor Self Heating

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PDF (82K)

App Note 1798 Abstract
Frequency Undersampling in Coulomb-Counting: Measuring Current Flow in Battery Applications

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PDF (53K)

App Note 224 Abstract
Calibrating the Offset Register of the DS2761

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PDF (26K)

App Note 527 Abstract
Simple Circuit Measures Battery Drain

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PDF (29K)

App Note 221 Abstract
DS276x Product Comparison

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PDF (55K)

App Note 121 Abstract
Inaccuracies of Estimating Remaining Cell Capacity with Voltage Measurements Alone

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PDF (60K)

App Note 908 Abstract
Ultra-Low Resistance Surface Mount Current Shunts

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PDF (52K)

App Note 128 Abstract
Testing and Calibrating a DS2760 Li-Ion Battery Monitor and Protector Based Circuit

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PDF (36K)

App Note 123 Abstract
Recommended ESD Protection and Circuit Placement for the DS2438 in Li-Ion Cell Pack Master

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PDF (38K)

App Note 138 Abstract
Using the DS2760 or DS2761 Battery Monitor in Multiple-Cell Applications

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PDF (95K)

App Note 131 Abstract
Lithium-Ion Cell Fuel Gauging with Maxim Battery Monitor ICs

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PDF (38K)

App Note 485 Abstract
Evaluating Accuracy of Coulomb-Counting Fuel-Gauging Systems

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PDF (47K)

App Note 476 Abstract
Comparing the I²C Bus to the SMBus

General

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PDF (46K)

App Note 3889 Abstract
Using the DS2746 to Identify a Battery-Pack Based on an Identification Resistor

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PDF (19K)

App Note 2237 Abstract
Simple Circuit Disconnects Load from Low-Voltage Supply

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PDF (31K)

App Note 1930 Abstract
Technology Changes: From a Portable Power Point of View

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PDF (55K)

App Note 1793 Abstract
Lithium Coin-Cell Batteries: Predicting An Application Lifetime

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PDF (26K)

App Note 527 Abstract
Simple Circuit Measures Battery Drain

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PDF (113K)

App Note 714 Abstract
Isolated Power Supplies for Telecom Applications

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PDF (21K)

App Note 1083 Abstract
Life with Batteries - Don't Ignore Typical Specs

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PDF (86K)

App Note 197 Abstract
Sense Resistor Power Dissipation

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PDF (162K)

App Note 187 Abstract
1-Wire Search Algorithm

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PDF (29K)

App Note 119 Abstract
Embedding the 1-Wire® Master in FPGAs or ASICs

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PDF (28K)

App Note 145 Abstract
Interfacing the 1-Wire Master (DS1WM) to an ARM7 Processor

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PDF (104K)

App Note 124 Abstract
Battery Considerations for Today's Low-Power, Long-Life Solid State Devices

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PDF (35K)

App Note 125 Abstract
Using Dallas Battery Management ICs with High Voltage Battery Packs

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PDF (49K)

App Note 122 Abstract
Using Dallas' 1-Wire ICs in 1-Cell Li-Ion Battery Packs With Low-Side N-Channel Safety FETs Master

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PDF (121K)

App Note 27 Abstract
Understanding and Using Cyclic Redundancy Checks with Maxim iButton Products

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PDF (29K)

App Note 1000 Abstract
Battery-Switchover Circuit Accommodates 3V Systems

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