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UC3842B_12

Description
1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
CategoryPower/power management   
File Size461KB,10 Pages
ManufacturerUNISONIC TECHNOLOGIES CO.,LTD
Websitehttp://www.unisonic.com.tw/
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UC3842B_12 Overview

1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8

UNISONIC TECHNOLOGIES CO., LTD
UC3842B/3843B
HIGH PERFORMANCE
CURRENT MODE
CONTROLLERS
DESCRIPTION
The UTC
UC3842B/3843B
are specifically designed for off-line
and dc-to-dc converter applications offering the designer a
cost-effective solution with minimal external components.
The
UC3842B
has UVLO thresholds 16V (on) and 10V(off),
ideally suited for off-line converters. The
UC3843B
is tailored for
lower voltage applications having UVLO thresholds of 8.4V(on)
and 7.6V(off).
LINEAR INTEGRATED CIRCUIT
FEATURES
* Trimmed oscillator for precise frequency control
* Oscillator frequency guaranteed at 250kHz
* Current mode operation to 500kHz
* Automatic feed forward compensation
* Latching PWM for cycle-by-cycle current limiting
* Internally trimmed reference with undervoltage lockout
* High current totem pole output
* Undervoltage lockout with hysteresis
* Low startup and operating current
ORDERING INFORMATION
Ordering Number
Lead Free
UC3842BL-D08-T
UC3842BL-S08-R
UC3842BL-S08-T
UC3843BL-D08-T
UC3843BL-S08-R
UC3843BL-S08-T
Halogen Free
UC3842BP-D08-T
UC3842BP-S08-R
UC3842BP-S08-T
UC3843BP-D08-T
UC3843BP-S08-R
UC3843BP-S08-T
Package
DIP-8
SOP-8
SOP-8
DIP-8
SOP-8
SOP-8
Packing
Tube
Tape Reel
Tube
Tube
Tape Reel
Tube
www.unisonic.com.tw
Copyright © 2012 Unisonic Technologies Co., Ltd
1 of 10
QW-R103-012.E

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Description 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8
Maker - - - UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD UNISONIC TECHNOLOGIES CO.,LTD
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ECCN code - - - EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
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