12v stepdown

Nick's picture


Joined: Feb 08, 2020

Replies: 0
12v stepdown
February 8, 2020 - 3:28pm

I have a 12v car battery as my power source, I have a wireless camera I need to power.
Specs of camera:
Imaging Sensor: 1/3 inch OMNIVISION colour CMOS
Horizontal Resolution: 700 TV lines
CMOS Total Pixels: 628 x 582 (PAL)
Scanning Frequency(H): 15.625kHz 15.734kHz
Scanning Frequency(V): 50Hz 60Hz
Angular Field of View: 110 degrees (f=2.8mm)
Minimum Illumination: 3.0Lux (F1.2)/ 0 Lux (IR LED on)
Infrared LED: 6EA Invisible IR LED 940nm
Consumption Current: 150mA
Wireless Frequency: ISM 2.414 - 2.468GHz
Wireless Range: 10–30m
Transmission Power: 10mW
Gain Control: Automatic
Modulation Mode: FM
Bandwidth: 18m
Power: DC 8V, 500mA
Operating Temperature: -10°C ~ +40°C
Operating Humidity: 85%RH
Dimension (WxLxH): 42x35x35mm
Weight: 65 g

I need a simple way to reduce the voltage to 8v to power this camera please

Sourav Gupta's picture


Joined: Feb 12, 2018

Replies: 84
Use switching regulator
February 8, 2020 - 6:12pm

A 1A dc-dc step down switching regulator will solve the purpose .
Search for a switching module.

jaksonlee's picture


Joined: Nov 07, 2019

Replies: 32
This powerful down regulator
February 10, 2020 - 9:51am

This powerful down regulator efficiently produces a fixed 12 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage. 

The flexibility in input voltage offered by these regulators is especially well-suited for battery-powered applications in which the battery voltage begins above the desired output voltage and drops below the target as the battery discharges. The no-load quiescent will typically be between 1mA and 5mA for all possible combinations of input and output voltages