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NX2124ACSTR Datasheet(PDF) 3 Page - Microsemi Corporation

Part # NX2124ACSTR
Description  300kHz SYNCHRONOUS PWM CONTROLLER
PDF  17 Pages
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Manufacturer  MICROSEMI [Microsemi Corporation]
Direct Link  http://www.microsemi.com
Logo MICROSEMI - Microsemi Corporation

NX2124ACSTR Datasheet(HTML) 3 Page - Microsemi Corporation

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NX2124/2124A
3
Rev.1.8
02/28/08
PARAMETER
SYM
Test Condition
Min
TYP
MAX
Units
SS
Soft Start time
Tss
Fsw=300Khz
3.4
1.7
mS
Oscillator (Rt)
Frequency
FS
NX2124, NX2124A
300
kHz
Ramp-Amplitude Voltage
VRAMP
1.6
V
Max Duty Cycle
84
%
Min Duty Cycle
0
%
Error Amplifiers
Transconductance
2000
umho
Input Bias Current
Ib
10
nA
Comp SD Threshold
0.3
V
FBUVLO
Feedback UVLO threshold
percent of nominal
65
70
75
%
High Side Driver(CL=2200pF)
Output Impedance , Sourcing
Rsource(Hdrv)
I=200mA
1.9
ohm
Output Impedance , Sinking
Rsink(Hdrv)
I=200mA
1.7
ohm
Sourcing Current
Isource(Hdrv)
1
A
Sinking Current
Isink(Hdrv)
1.2
A
Rise Time
THdrv(Rise)
14
ns
Fall Time
THdrv(Fall)
17
ns
Deadband Time
Tdead(L to
H)
Ldrv going Low to Hdrv
going High, 10%-10%
30
ns
Low Side Driver (CL=2200pF)
Output Impedance, Sourcing
Current
Rsource(Ldrv)
I=200mA
1.9
ohm
Output Impedance, Sinking
Current
Rsink(Ldrv)
I=200mA
1
ohm
Sourcing Current
Isource(Ldrv)
1
A
Sinking Current
Isink(Ldrv)
2
A
Rise Time
TLdrv(Rise)
13
ns
Fall Time
TLdrv(Fall)
12
ns
OCP
NX2124
360
NX2124A
540
mV
OCP voltage
10
ns
Deadband Time
Tdead(H to
L)
SW going Low to Ldrv
going High, 10% to 10%



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