OJX Current Mode Boost-Type LED Driver with Programmable Dimming Control
OJX is a constant frequency, current mode Boosttype LED driver belonging to the RT8537GQW series on L3+ hash board. In normal operation, the N-MOSFET is turned on when the PWM Control circuit is set by the oscillator and is turned off when the current comparator resets the PWM Control circuit. While the N-MOSFET is turned off, the inductor current conducts through the external diode.
Electrical Characteristics:
Operating Quiescent Current into VIN: 2.3mA
Shutdown Current: 1μA
Under Voltage Lockout Threshold: max 2.5V
Under Voltage Lockout Hysteresis: 70mV
Oscillator Frequency: max 1.5MHz
Maximum Duty Cycle: 93%


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