OCP8178 Datasheet | ORIENT-CHIP

Description - Features With a 40-V rated integrated switch FET, the - 2.7V to 5.5V Input Voltage Range OCP8178 is a boost converter that drives LEDs in - 38V Open LED Protection series. The boost converter runs at 600k Hz fixed - 200m V Reference Voltage switching frequency to reduce output ripple, improve - Flexible Digital and PWM Brightness Control conversion efficiency, and allows for the use of small - Built-in Soft Start external ponents. - Up to 90% Efficiency The default white LED current is set with the external sensor resistor Rset, and the feedback voltage is regulated to 200m V, as shown in the typical M application. During the operation, the LED current can be controlled using the 1-wire digital interface through the CTRL pin. Alternatively, a pulse width modulation O (PWM) signal can be applied to the CTRL pin through which the duty cycle determines the feedback .C reference voltage. In either digital or PWM mode, the OCP8178 does not burst the LED current; therefore, it does not generate audible noises on the output P capacitor. For maximum protection, the device features I integrated open LED protection that disables the OCP8178 to prevent the output voltage from exceeding the IC's absolute maximum voltage ratings during open H LED conditions. The OCP8178 is available in a space-saving, .ORIENT-C 2mm ×2mm DFN package with thermal pad. - 2mm × 2mm × 0.8mm DNF2X2-6L(6-pin DFN ) Package With Thermal Pad - Applications - Cellular Phones - Portable Media Players - Ultra Mobile Devices - GPS Receivers - White LED Backlighting for Media Form Factor Display Page1 - 3 Rev. 1.6 Feb .27, 2018 源于灿瑞 磁传天下 - Pin Configuration DFN2X2-6L Pin Name VIN SW GND FB...