OB3379ZCP-D Datasheet | On-Bright

OB3379x High performance buck LED driver GENERAL DESCRIPTION Features The OB3379X is a high efficiency LED driver designed for white LEDS lighting and backlight. OB3379X is built-in a quasi-resonant control method buck DC/DC converter. The controller implements a peak current mode control scheme - Low system cost and high efficiency - Quasi-Resonant buck topology operation - Programmable CC regulation - 1%-100% Analog and PWM to analog and an internal transconductance amplifier to accurately control the output current over a wide input and load conditions. The transconductance amplifier reference is set by internal reference voltage which determined by the input of ADIM pin bination dimming - Zero voltage signal detected to improve efficiency and EMI performance - LED+/LED- short circuit protection and the duty cycle at HPWM pin. - LED open loop protection OB3379X offers prehensive protection Features to protect the system in various fault to conditions such as Diode & Inductor short protection, CS open protection, LED+/LED- short l protection, LED open loop protection, Over tia temperature protection (OTP). The cycle-by-cycle current limit function limits the maximum current n flowing through the external MOSFET. fide OB3379X is offered in SOP8 package. - Cycle-by-cycle current limiting - Built-in leading edge blanking (LEB) - VIN under voltage lockout with hysteresis - Over temperature protection (OTP) - Diode & Inductor short protection - CS open protection - Low standby current APPLICATIONS - LED lighting - LED backlight n TYPICAL APPLICATION co VIN t 12V igh ADIM -Br ENA On HPWM Option 1 LPF GND 8 2 HPWM ADIM 7 3 ZVS VIN 6 4 CS DRAIN...