Single cell white led driver

Single cell operation with pushbutton startup to summarize, the tps61040, tps61041, and tps61042 can be configured to operate from input voltages less than 1. This singleic driver for white leds delivers up to 1a from one or two alkaline cells figure 1. Ltc3490 single cell 350ma led driver analog devices. Charge pumps and other ics are available for driving white leds, but they generally dont work with the low supply voltage of 1. It comprises a highefficiency boost converter with an integrated 2a, 40v power mosfet, and six current sink regulators. A controller for inductive stepup converters, the ic includes the necessary power switches. High efficient 6channel wled driver supporting single. Single and twocell white led drivers without inductors. The maximum number of leds you can run from a single driver is determined by dividing the maximum output voltage of the driver by the forward voltage of your led s. The zxsc300 is a single or multi cell led driver designed for applications. The mic2282 is a boost led driver optimized for single cell operation from alkaline, nimh, or liion batteries. The mic2282 operates with an input voltage between 0. Diodes low voltage dcdc high brightness led drivers are targeted at battery powered systems for general illumination applications.

This circuit can drive 9 parallel strings of three white leds in series and can be operated from a 3v dc supply and it is suitable for single cell applications. Led string driver operates from single cell this basic lowpower driver, based on a few standard discrete components, can supply a variety of led types and loads. Analog devices stepup boost led drivers provide current control of multiple leds and support for high brightness led lighting, large format led backlighting, cameraenabled smart devices, and a range of related applications. Three inductorfree circuits that allow a white led or uv led to be driven from one 1. It is a high efficiency boost converter that operates from 1 or 2 nimh or alkaline cells and generates 350ma of constant current with up to 4v of compliance. When using luxdrive drivers, you determine the maximum output voltage by subtracting 2 volts from your input voltage. This is needed because the drivers need a 2 volt overhead to. Boost led driver, vin 1v to 3v single cell, white led at 18ma, rectangular. The tps61176 is an integrated wled backlight driver for tablets or notebook pcs using singlecell batteries. A white led delivers a wide color spectrum and better visibility than do monochromatic leds. Three inductorfree circuits that allow a white led or uv led to bedrivenfrom one 1. The combination of a low feedback voltage of 220mv and an operating current of 120a provides a high efficiency solution that prolongs battery life.

Another led driver circuit based on the mp3302 led driver ic. Members of this portfolio include i2ccompatible programming interfaces, with compact, high efficiency features suited to. This circuit can drive 9 parallel strings of three white leds in series and can be operated from a 3v dc supply and it. Zxld383 low voltage dcdc led drivers diodes incorporated. Zxsc300 low voltage dcdc led drivers diodes incorporated. Ledstring driver operates from single cell electronic. Zxsc380 single or multi cell led driver solution description the zxsc380 is a highly integrated single or multi cell led driver for applications where stepup voltage conversion from a very low input voltage is required. The driver has been tested with a string of three standard white leds see table. The zxld383 is a single or multi cell led driver designed for applications requiring.

The ic generates constant current pulses that are ideal for driving single or multiple leds over a wide range of operating voltages. Ledstring driver operates from single cell electronic design. Although the example circuits are shown in a constant current led. The single cell board was made by adding two pnp transistors, three resistors and a capacitor to the two cell circuit. Mic2282 display and led drivers backlight led drivers. The ltc3490 provides a constant current drive for 1w led applications. Single and two cell white led drivers without inductors. This provides a high efficiency, inexpensive power solution from single cell battery inputs. The circuit, though, is also able to power more leds connected.