3V Battery To 5V Dc/Dc Converter


Posted on Sep 9, 2012

A common power-supply requirement involves converting a 2.4- or 3-V battery voltage to a 5-V logic suppl


3V Battery To 5V Dc/Dc Converter
Click here to download the full size of the above Circuit.

y. This circuit converts 3 V to 5 V at 40 mA with 85% efficiency. When Ic (pin 6) is driven low, the output voltage will be the battery voltage minus the drop across diode Dl. The optional circuitry that uses CI, R3, and R4 lowers the oscillator frequency when the battery voltage falls to 2.0 V. This lower frequency maintains the output-power capability of the circuit by increasing the peak inductor current, which compensates for the reduced battery voltage.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

The MicroPower SE
Darkroom timer
Dual-limit-microvolt-comparator
Function-generator
DIY Infrared Sensor Module using Arduino
headphone circuit
Antenna Analyzer Progress
AC Ohmmeter ESR Meter Circuit
door lock schematic
Lowest Phase Noise PLL Synthesizer Using Fractional-N Technology
Thermal imaging sensor from 16x16 pixel array
Open Loop Speed Control of a DC Motor via 8255 Controller



Top