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NX2142ACUTR Datasheet(PDF) 3 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) 3 Page - Microsemi Corporation

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NX2142/2142A
3
Rev. 1.1
10/28/07
N
PARAMETER
SYM
Test Condition
Min
TYP
MAX
Units
Vin-Hysteresis
Vin_Hyst
Vin Falling
0.5
V
Oscillator (Rt)
NX2142
600
KHz
NX2142A
1000
KHz
Frequency Over Vin
1
%
Ramp Peak to Peak Voltage
VRAMP
Vin=20V
2
V
Ramp Valley Voltage
0.8
V
Ramp Peak to Peak/Vin Gain
0.1
V/V
Max Duty Cycle
FS=600kHz
77
%
Min Duty Cycle
0
%
Min Controllable on time
150
nS
Error Amplifiers
Transconductance
2500
umho
Input Bias Current
Ib
100
nA
Comp SD threshold
0.3
V
Soft Start
Soft Start time
Tss
NX2142
3.4
mS
NX2142A
2
mS
High Side Driver
(CL=3300pF)
Rise Time
THdrv(Rise)
10% to 90%
50
ns
Fall Time
THdrv(Fall)
90% to 10%
50
ns
Low Side Driver
(CL=3300pF)
Output Impedance, Sourcing
Current
Rsource(Ldrv)
I=200mA
1
ohm
Output Impedance, Sinking
Current
Rsink(Ldrv)
I=200mA
0.5
ohm
Rise Time
TLdrv(Rise)
10% to 90%
50
ns
Fall Time
TLdrv(Fall)
90% to 10%
50
ns
Fixed OCP
OCP voltage threshold
320
mV
FBUVLO
Feedback UVLO threshold
percent of nominal
70
%
Over temperature
Threshold
150
°C
Hysteresis
20
°C
ohm
Output Impedance , Sourcing
Current
Rsource(Hdrv)
I=200mA
Output Impedance , Sinking
Current
Rsink(Hdrv)
I=200mA
Tdead(L to
H)
Deadband Time
Ldrv going Low to Hdrv going
High, 10% to 10%
Deadband Time
Tdead(H to
L)
SW going Low to Ldrv going
High, 10% to 10%
30
ns
30
ns
ohm
0.8
1
Frequency
FS



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