Posts Tagged ‘5v to 12v dc converter’

5V to 12V DC DC Step-Up Converter by LT1073-12

In order to step up the voltage output from four rechargeable AA batteries from around 5 Volts to the required 12 Volts the following circuit is used.

The key component is the LT1073-12 DC/DC Converter Chip from Linear Technology. Click here for the comprehensive LT1073 Specification Sheet which includes many example circuits using this chip.
This £2 device (the 5V output version LT1073-5 is pictured above) requires just a few off-the-shelf components and operates with supply voltages from 1V to 30V.

The only additional components required to use an LT1073-12 as a 5V-12V DC/DC converter are a 150uH inductor, two 100uF capacitors,and a 50 Ohm Resistor. Total cost of these components is around £1.

Source:http://www.reuk.co.uk/Power-12V-LED-Spotlight-with-4-AA-Batteries.htm
Thank you.

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5VDC to +12V and -12V Isolated dual Switching Regulator with LM2587

This circuit Dc converter step up voltage, For 5VDC to +12V and -12V Isolated dual Switching Regulator by IC LM2587-12V.
Voltage supply input 4V to 6V, Output current 0.3A.
Detail other see in circuit.

Detail IC LM2587

SIMPLE SWITCHER 5A Flyback Regulator

The LM2587 series of regulators are monolithic integrated circuits specifically designed for flyback, step-up (boost), and forward converter applications.

Output Range 1.23V min, 5V, 12V, 3.3V
InputMin Voltage 4 Volt
InputMax Voltage 40 Volt

Applications
1.Flyback regulator
2. Multiple-output regulator
3. Simple boost regulator
4. Forward converter

Source: http://www.national.com/pf/LM/LM2587.html

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LM2577 5V to 12V DC Converter step up Voltage Regulator

This is Circuit DC to DC Converter Step up Voltage Regulator From 5V To 12V 1A Regulated Output.

LM2577 (3A)
DC to DC step up voltage regulator.

Wide input voltage 3.5Vdc to 40Vdc.

Component list

- 2.2k 1/4W resistor

- 0.1uF capacitor

- 0.33uF capacitor

- 680uF 50V electrolytic capacitor

- 1N5822 high speed schottky diode (3A)

- wire coil inductor, 100uH

- “for LM2577-adj IC” 20k multi-turn variable resistor, set to ratio to R2=2k, R1=18k for voltage output of 12Vdc before soldering

Part number:

- LM2577-12 (12Vdc output)

- LM2577-15 (15Vdc output)

- LM2577-ADJ (1.23Vdc to 37Vdc output)

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