UC3833L Datasheet | Unisonic Technologies

DESCRIPTION The UTC UC3833L is a high performance current Mode PWM controller, which is built-in with frequency triple, multi-protections and EMI-improved solution in a SOT-26 package. It’s ideal for applications requiring a cost-effective solution, minimum ponent counts and circuit space. The internal slope pensation improves system stability at high PWM duty cycle output. The UTC UC3833L incorporates frequency triple function and adjustable OLP timer to handle the peak power with delay time. The frequency triple function can reduce the transformer flux and core size. Furthermore, the frequency swapping function is to reduce the noise level and thus helps the power circuit designers for EMI suppression with minimum amount of ponent cost and developing time. 54 6 1 23 SOT-26 - FEATURES - Very low startup current (<18µA) - Ultra low operating current at light load (<1m A) - Frequency triple for peak power (195k Hz) - Adjustable soft start time - Adjustable OLP (over load protection) delay timer(automatic recovery) - UVLO (Under Voltage Lockout) - LEB (Leading-Edge Blanking) on CS Pin - Current mode control with Green Mode Operation out pin clamping - OVP (Over Voltage Protection) on VDD Pin ( latch shut down in UTC UC3833L) - Internal frequency swapping for EMI improved - ON-Chip OTP (Over Temperature Protection, latch shut down in UTC UC3833L) - ORDERING INFORMATION Ordering Number UC3833LG-AG6-R Package SOT-26 Packing Tape Reel .unisonic..tw Copyright © 2016 Unisonic Technologies Co., Ltd 1 of 11 QW-R103-133.A - MARKING - PIN CONFIGURATION LINEAR INTEGRATED CIRCUIT - PIN DESCRIPTION PIN NO. 1 4 5 6 PIN NAME GND CS VDD OUT DESCRIPTION Ground Voltage feedback pin, connect a photo-coupler to close the control loop and achieve the regulation. This pin is to program the frequency of the low frequency timer. connecting a capacitor to ground sets the trembling frequency and OLP delay time. Current sense pin, connect it to sense the MOSFET...