nx2124 Microsemi Corporation, nx2124 Datasheet - Page 3

• Manufacturer Part Number: nx2124
• Description: 300khz Synchronous Pwm Controller
• Manufacturer: Microsemi Corporation

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