nx2155h Microsemi Corporation, nx2155h Datasheet - Page 3

• Manufacturer Part Number: nx2155h
• Description: Single Power Supply Synchronous Pwm Controller
• Manufacturer: Microsemi Corporation

Rev.1.1
04/16/09
Vin UVLO
V
V
SS
Soft Start time
Oscillator (Rt)
Frequency
Ramp-Amplitude Voltage
Max Duty Cycle
Min Controlable On Time
Error Amplifiers
T ransconductance
Input Bias Current
Comp SD Threshold
FBUVL O
Feedback UVLO threshold
High Side Driver(C
Output Impedance , Sourcing
Output Impedance , Sinking
Rise Time
Fall Tim e
Deadband Time
Low Side Driver (C
Output Impedance, Sourcing
Current
Output Impedance, Sinking
Rise Time
Fall Tim e
Deadband Time
OCP
OCP current
Over temperature
T hreshold
Hysteresis
Internal Schottky Diode
Forward voltage drop
in
in
-Threshold
-Hysteresis
PARAMET ER
L
L
=2200pF)
=2200pF)
R
THdrv(Rise)
R
TLdrv(Rise)
THdrv(Fall)
Tdead(H to
Tdead(L to
TLdrv(Fall)
R
R
V
source
source
V
sink
in
sink
V
in
SYM
_UVLO
Tss
_Hyst
RAMP
F
H)
(Hdrv)
L)
Ib
(Ldrv)
(Hdrv)
(Ldrv)
S
V
V
Rt=4.22k
forward current=20mA
going High, 10% to 10%
Ldrv going Low to Hdrv
F
F
in
in
SW going Low to Ldrv
going High, 10%-10%
S
S
Rising
Falling
=2.2MHz
=2.2MHz
Test Condition
I=200mA
I=200mA
I=200mA
I=200mA
1500
0.24
0.54
Min
1.4
62
21
30
6
7
2250
2000
TYP
400
150
350
6.5
0.6
1.5
0.3
0.6
1.9
1.7
1.9
71
10
14
17
30
13
12
10
37
20
1
NX2155H
MAX
2500
0.36
0.66
150
500
7.5
1.9
80
39
13
45
Units
umho
ohm
ohm
ohm
ohm
kHz
mV
uS
nS
nA
uA
ns
ns
ns
ns
ns
ns
o
o
%
V
V
V
V
V
C
C
3