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NX2142ACUTR Datasheet(PDF) 5 Page - Microsemi Corporation

Part # NX2142ACUTR
Description  SINGLE CHANNEL PWM CONTROLLER WITH FEEDFORWARD AND 5V BIAS REGULATOR
PDF  18 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

NX2142ACUTR Datasheet(HTML) 5 Page - Microsemi Corporation

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NX2142/2142A
5
Rev. 1.1
10/28/07
BLOCK DIAGRAM
GND
Bias
Generator
1.25V
0.8V
BST
HDRV
SW
VCC
LDRV
FB
OSC
R
S
Q
Digital
start Up
UVLO
POR
Control
Logic
OCP
comparator
VCC
ramp
0.3V
COMP
OC
START
START
Hiccup Logic
OC
1.3V
CLAMP
0.6V
CLAMP
START
PWM
COMP
320mV
0.8V
VIN
6V/
5.5V
POR
FB
70%*Vp
SS_half_done
VIN
Regout
Ref
4.4/4.2V
Figure 2 - Simplified block diagram of the NX2142



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