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Application Notes

Over 2000 application notes and technical articles written by engineers, for engineers.
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These articles offer experienced analysis, design ideas, reference designs, and tutorials—to make you an expert.

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Power-Supply Circuits

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ALSO SEE: Power-Supply Cookbook — Tested designs, with bill of materials, to meet your specs.

Digital Camera

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PDF (236K)

App Note 4326 Abstract
Reduce Standby Power Drains with Ultra-Low-Current, Pulse-Frequency-Modulated (PFM) DC-DC Converters

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PDF (70K)

App Note 4187 Abstract
Negative Charge Pumps Achieve Inductor-Like Efficiency for WLED Backlights

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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 (29K)

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

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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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App Note 3603 Abstract
Buck Converters Proliferate in Handhelds as Features and Processing Power Increase

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App Note 3441 Abstract
Circuit Board Layout Guidelines for White LED Charge Pumps

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App Note 3243 Abstract
White-LED Boost Converter vs. Charge Pump

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PDF (125K)

App Note 3256 Abstract
Why Drive White LEDs with Constant Current?

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PDF (38K)

App Note 3226 Abstract
High-Level Integration Needed for Compact Digital-Camera Power

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PDF (99K)

App Note 3241 Abstract
Charging Batteries Using USB Power

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PDF (155K)

App Note 3070 Abstract
Standard and White LED Basics and Operation

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PDF (47K)

App Note 3014 Abstract
LDO Improves White LED Current Matching

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PDF (146K)

App Note 1804 Abstract
Driving LEDs in Battery-Operated Applications: Controlling Brightness Power Efficiently

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

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App Note 1875 Abstract
Triple Capacitive Voltage Inverter with the MAX871

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App Note 1750 Abstract
Powering Six White LEDs with High Efficiency Using the MAX1848

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App Note 1736 Abstract
Powering Four White LEDs with High Efficiency Using the MAX1848

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PDF (110K)

App Note 751 Abstract
Linear Regulators in Portable Applications

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App Note 1147 Abstract
Simple Current Source Determines the MAX1802 Auxiliary Controller Switching Frequency

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App Note 1134 Abstract
Uninterruptible Power Supply for USB Devices

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App Note 1121 Abstract
Using Ceramic Output Capacitors with the MAX1734 Voltage-Mode Buck Converter

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

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PDF (158K)

App Note 1037 Abstract
Charge-Pump and Step-Up DC-DC Converter Solutions for Powering White LEDs in Series or Parallel Connections

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App Note 1051 Abstract
SEPIC Equations and Component Ratings

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App Note 1021 Abstract
Buck/Boost Charge-Pump Regulator Powers White LEDs from a Wide 1.6V to 5.5V Input

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App Note 1020 Abstract
LDO Linear Regulator Improves White LED Brightness Matching

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PDF (42K)

App Note 959 Abstract
Dual 600mA Buck Converter for Logic Supply and Core Supply at 1V or Less

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PDF (79K)

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

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App Note 479 Abstract
All-Ceramic 320mA Step-Down Converter for USB

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PDF (69K)

App Note 471 Abstract
Step-up Converter with LDO Beats SEPIC Efficiency

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App Note 297 Abstract
Tripler Converts 5V to 15V

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App Note 269 Abstract
Trading Performance for Cost in Portable Power Supplies

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App Note 966 Abstract
Low Battery Monitor Delays System Shutdown

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