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qx5306 is a high-efficiency, high-precision boost type high-power led lamp constant current drive control chip.
qx5306 has a built-in high-precision error amplifier, fixed off-time control circuit, constant current drive circuit, etc. it is especially suitable for constant current drive of high-power, multiple high-brightness led light strings.
qx5306 can control the drive current of high-brightness led lamp by adjusting the external current sampling resistor, so that the brightness of led lamp can reach the expected constant brightness. adding a pwm signal to the dim terminal can also perform dimming of the led light.
qx5306 adopts a fixed off-time control method. its off-time can be set by external resistors. it uses built-in compensation technology, no external compensation capacitors are needed, and it has built-in output overvoltage protection function. .
qx5306 is available in sop8 package.
ø wide input voltage range: 7v ~ 24v
ø high efficiency: up to 95%
ø cs current limiting protection voltage: 500mv
ø fb current sampling voltage: 250mv
ø chip power supply undervoltage protection: 5.8v
ø adjustable off time
ø built-in compensation technology
ø built-in output ovp function
typical application circuit diagram
stay tuned for updates!
ø led light cup
ø battery-powered led light string
ø flat panel display led backlight
ø constant current charger control
ø high-power led lighting