The OC5338 is an integrated three-function switching step-down LED constant current driver. Switching between functions can be achieved by turning on and off the power supply: full bright (100%) -- dark and bright (25%) -- flashing.

The OC5338 has a built-in 100V/3A power MOS and adopts a fixed off-time control method. The off-time can be adjusted by an external capacitor, so the operating frequency can be set according to user requirements.

The OC5338 sets the output current of the LED through an external resistor.

OC5338 also integrates VDD voltage regulator, over temperature protection circuit and so on. Reduced peripheral components and improved system reliability.

The OC5338 is available in an ESOP8 package. The heat sink is built into the SW pin.

Features:

? Built-in 100V /3A power MOS

? Built-in three functions: 100%-25%-burst

? Wide input voltage range: 3.6V~100V

? High efficiency: up to 90%_ ? Chip power supply under-voltage protection: 3.2V (hysteresis 0.5V)

? Peak current sampling voltage: 250mV

? Off-time adjustable

? Built-in over temperature regulation

? Built-in VDD voltage regulator

Application range:

? LED flashlight

? Bicycle lights, electric vehicle lights

? High power LED lighting

Boost constant current:

OC6701 3.2～100V If the input voltage is more than 2V, it can be within 3A

OC6700 3.2～60V greater than the input voltage 2V or more can be within 2A

OC6702 3.2～100V If the input voltage is more than 2V, it can be within 1A

Buck constant current:

OC5021 3.2～100V can work normally within 5A when it is at least 1V lower than the output voltage

OC5020 3.2～100V can work normally within 2A if it is at least 1V lower than the output voltage

OC5022 3.2～60V At least 1V lower than the output voltage, it can work normally within 3A

OC5028 3.2～100V At least 1V lower than the output voltage, it can work normally within 1.5A

OC5011 5～40V, at least 1V lower than the output voltage, it can work normally within 5A

OC5010 5～40V can work normally within 2A if it is at least 1V lower than the output voltage

LED DRIVER DC-DC Buck-Boost Constant Current

OC4001 5～100V 3.2～100V 3A

LED DRIVER DC-DC Linear Buck Constant Current

OC7135 2.5-7V less than or equal to the input voltage can be fixed <400mA

OC7131 2.5-7V can be expanded if it is lower than or equal to the input voltage. The actual current depends on the power consumption of the MOS tube

OC7130 2.5-30V is lower than or equal to the input voltage, the actual current depends on the overall power dissipation of the IC

LED DRIVER DC-DC dedicated IC series for step-down and constant current: dedicated chips for LED high and low beams

OC5200 3.2～100V can work normally within 2A if it is at least 1V lower than the output voltage

OC5208 3.2～100V can work normally within 1.5A when it is at least 1V lower than the output voltage

LED DRIVER DC-DC dedicated IC series for step-down and constant current: multi-functional LED flashlight dedicated chip

OC5351 3.2～100V can work normally within 5A if it is at least 1V lower than the output voltage

OC5331 3.2～100V can work normally within 5A when it is at least 1V lower than the output voltage

DC-DC step-down constant voltage

OC5801 8～100V can work normally within 3A when it is at least 5V lower than the output voltage

OC5800 8～100V can work normally within 2A if it is at least 5V lower than the output voltage