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UC3842BP-S08-R Datasheet(PDF) 2 Page - Unisonic Technologies

Part # UC3842BP-S08-R
Description  HIGH PERFORMANCE CURRENT MODE CONTROLLERS
PDF  11 Pages
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Manufacturer  UTC [Unisonic Technologies]
Direct Link  http://www.utc-ic.com
Logo UTC - Unisonic Technologies

UC3842BP-S08-R Datasheet(HTML) 2 Page - Unisonic Technologies

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UC3842B/3843B
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
2 of 11
www.unisonic.com.tw
QW-R103-012.F
MARKING
Package
UC3842B
UC3843B
DIP-8
UTC
UC3843B
2
3
4
1
5
6
7
8
Date Code
L: Lead Free
P: Halogen Free
Lot Code
SOP-8
PIN CONFIGURATION
1
2
3
4
8
7
6
5
VCC
OUTPUT
CS
RTCT
VREF
COMP
VFB
GND
PIN DESCRIPTIONS
PIN NO.
PIN NAME
I/O
DESCRIPTION
1
COMP
O
Error amp output to provide loop compensation maintaing VFB at 2.5V
2
VFB
I
Error amp inverting input, The non-inverting input of error amp is 2.5V band
gap reference
3
CS
I
Current sense input to PWM control gate drive of output
4
RTCT
I
To set oscillator frequency and maximum output duty cycle
5
GND
Power ground
6
OUTPUT
O
To direct drive power MOSFET
7
VCC
Power supply
8
VREF
O
5V regulated output provides charging current for CT through RT



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