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LED Boost Switcher: Single AA Cell Powers Two LEDs at Constant Current -
(electronic schematic / circuit added 2/05) |
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LED HeadLamps - This article includes circuits of DC-DC LED drivers step downs to
run LEDs on less than Battery Volts, Boost for above. (added 4/02) |
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Linear Technology Magazine Circuit Collection Volume IV - AN84 Linear Technology
Application Note 84 is a collection of "power circuits" from the years 1996 through
1998 as seen in the pages of Linear Technology magazine. This Application Note
collects circuits that can output tens of amps to circuits that can operate a handheld
device for several years. In addition....(app note added 1/06) |
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LM2623 General Purpose, Boost Converter Circuit - National Semiconductor
Application Note (app note added 7/06) |
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Low Cost Boost Converters using LM3578A - National Semiconductor Application Note
(app note added 2/06) |
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Low cost feedback circuit Boosts efficiency - 01/21/99 EDN-Design Ideas: To
implement a step-up converter with a current output, designers often simply connect
the load in place of the top resistor in a resistive-divider feedback network. The
bottom resistor then serves as a current-sense resistor. Though simple, this approach
is inefficient.....(design idea added 11/05) |
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Low Cost Switcher Converts 5 to 24V - 02/16/98 EDN-Design Ideas:
-Low-cost, three-transistor low power boost switching regulator.....(design idea added
3/03) |
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Low Noise Step Up Supply Generates 5.5 Volt Output - 10/09/97 EDN-Design Ideas:
(design idea added 3/03) |
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LT1070 Design Manual - AN19 Linear Technology This design manual is an extensive
discussion of all standard switching configurations for the LT107)0; including buck,
boost, flyback, forward, inverting and "Cuk." The manual includes comprehensive
information on the LT107)0, the external components used with it, and complete
formulas for calculating component values. |
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LT1074/LT1076 Design Manual - AN44 Linear Technology This note discusses the use
of the LT107)4 and LT107)6 high efficiency switching regulators. These regulators are
specifically designed for ease of use. This application note is intended to eliminate
the most common errors that customers make when using switching regulators....(app
note added 2/06) |
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LT1339 Design Manual - AN73 Linear Technology This application note contains
detailed design information to allow the reader to craft switching regulators using
the LT1339 high power synchronous DC/DC converter. The note provides expanded pin
descriptions for the LT1339 as well as easy-to-use graphical tools....(app note added
1/06) |
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LT1370: A 500kHz 6a Monolithic Boost Converter - DN183 Design Notes (Linear
Technology) (app note added 6/06) |
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LT1619: Tiny Boost Controller Provides Efficient Solutions for Low Voltage Inputs
- DN255 Design Notes (Linear Technology) (app note added 1/06) |
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LTC1871 No Rsense Controller is Small & Efficient in Boost Flyback & Sepic
Applications - DN296 Design Notes (Linear Technology) (app note added 1/06) |
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LX1741/LX1742 Boost Converter Design Hint See Also DN-099A & DN-099B-AN-22 -
Application Note 22 from Microsem (app note added 6/06) |
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National's LM2623 Boost Converter - National Semiconductor Application Note
(app note added 2/06) |
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Op Amp Booster Designs - National Semiconductor Application Note (app note
added 2/06) |
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Palmpilot Turbo Boost Guage Interface - (electronic circuit added 4/05) |
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Pass Transistor Lowers Dropout Voltage - 02/18/99 EDN-Design Ideas: With linear
regulators,you measure dropout voltage, VIN–VOUT, at the minimum input voltage for
which the IC sustains regulation. Low dropout means longer battery life, because the
load circuit continues to operate while the battery discharges to a lower terminal
voltage.....(design idea added 6/03) |
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Photo flash charger minimizes parts count - 10/22/98 EDN-Design Ideas:
Photo-flash and strobe devices operate by discharging a high-voltage capacitor into a
bulb. Charging the capacitor from a battery or other low-voltage source requires a
step-up dc/dc converter to boost the voltage, typically to 300V. One way to generate
the high voltage.....(design idea added 2/06) |
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Positive regulator makes dual negative output converter - 06/26/03 EDN-Design
Ideas: Some systems, such as optical networks, require more than one negative voltage.
A common procedure is to boost the main negative supply of -5V to -10V and then reduce
it with a linear regulator to -9V. The -5V itself comes from a positive supply,
typically 5 or 12V. Independently creating each of the two negative voltages requires
the use.....(design idea added 1/05) |
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Positive regulator makes negative DC/DC converter - 12/26/02 EDN-Design Ideas:
Power-supply designers can choose from a plethora of available positive buck
regulators that can also serve as negative boost dc/dc converters. Some buck
regulators have a negative-feedback reference voltage expressly for this purpose, but
ICs that have positive-reference feedback voltages far outnumber these
negative-feedback regulators.....(design idea added 1/05) |
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Power Booster Applications Apex-AN14 - Apex App Note (added 08/08/08) |
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Protection Feature Enhances Boost Converter - 10/27/94 EDN-Design Ideas: A
boost-topology switching regulator is the simplest solution for converting a twoto
three-cell input to a 5V output. Unfortunately, boost regulators have several inherent
disadvantages, including a lack of short-circuit protection and shutdown capability.
In some battery-operated.....(design idea added 2/06) |
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PWM Controller Drives LEDs from High Voltage Lines - 03/04/04 EDN-Design Ideas:
Powering LEDs from a wide dc range—say, 30 to 380V—without wasting a lot of power in
the regulating block, is a difficult task when the LED current needs to be constant.
Dedicated LED drivers are available, but they usually implement boost structures and
are thus inadequate for high-voltage inputs.....(design idea added1/05) |
