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UNISONIC TECHNOLOGIES CO., LTD
UC2842B/2843B LINEAR INTEGRATED CIRCUIT
1 of 7
Copyright © 2022 Unisonic Technologies Co., Ltd
QW-R103-048.H
HIGH PERFORMANCE
CURRENT MODE PWM
CONTROLLERS
DESCRIPTION
The UTC UC2842B/2843B are high performance fixed
frequency current mode controllers that specifically designed for
Off-Line and DC to DC converter applications with minimal external
parts count.
The differences between UC2842B and UC2843B are the
under-voltage lockout thresholds. The UC2842B ideally suited to
off-line applications with UVLO thresholds of 16V
(ON)
and 10V
(OFF)
,
and UC2843B has UVLO thresholds of 8.4V
(ON)
and 7.6V
(OFF)
for
lower voltage applications.
FEATURES
* Operation output switching frequency up to 500 kHz
* Automatic feed forward compensation
* Latching PWM for cycle-by-cycle current limiting
* High current totem pole output
* Internally trimmed reference with under voltage lockout
* UVLO with hysteresis
* Low startup and operating current
ORDERING INFORMATION
Ordering Number
Package Packing
Lead Free Halogen Free
UC2842BL-D08-T UC2842BG-D08-T DIP-8 Tube
UC2842BL-S08-R UC2842BG-S08-R SOP-8 Tape Reel
UC2843BL-D08-T UC2843BG-D08-T DIP-8 Tube
UC2843BL-S08-R UC2843BG-S08-R SOP-8 Tape Reel