SC2608
POWER MANAGEMENT
Electrical Characteristics
Unless specified: V
CC
= 12V, V
BST
- V
Phase
= 12 V, V
OUT
= 3.3V, T
J
= T
A
= 25
o
C.
P a r a met er
Ramp Peak Voltage
Ramp Valley Voltage
Maximum Duty Cycle
M O SF E T D r i v er s
DH Sink/Source Current
DL Sink/Source Current
DH Rise/Fall Time
DL Rise/Fall Time
Dead Time
DL Minimum On Time
Ref er en ce Sect i on
Reference Voltage
Temp Variance
Line Variance
C u r r en t L i mi t
Trip Voltage
Sof t - St a r t
SS Source Current
SS Sink Current
U n d er v ol t a g e L ock ou t
UVLO Threshold
UVLO Hysterisis
T h er ma l Sh u t d own
Over Temperature Trip Point
Symb ol
V
P-K
V
V
D
MAX
C on d i t i on s
4.75V < V
CC
< 12.6V
4.75V < V
CC
< 12.6V
200kHz
Mi n
Ty p
1.8
0.8
90
Ma x
Un i ts
V
V
%
I
D H
I
D L
tr, tf
tr, tf
t
dt
t
ON
t
PW
> 400nS
V
GS
= 4.5V (src)
V
GS
= 2.5V (snk)
C
L
= 3000pF, See Fig. 2
C
L
= 4000pF, See Fig. 2
See Fig. 2
4.75V < Vcc < 12.6V
0.6
0.6
0.8
0.7
50
50
80
400
A
A
ns
ns
ns
ns
V
REF
∆V
REF
∆V
REF
V
CC
= 12V
-40 < T
J
< +125
O
C
4 .7 5 V < V
C C
< 1 2 .6 V
0 .7 9 2
-1.5
0.8
0.808
1.5
4
V
%
mV
V
TRIP
4.75V < Vcc < 12.6V
V
trip
= V
PHASE
- GND
-190
-160
-130
mV
I
SRC
I
SNK
V
COMP
< 2.5V
V
COMP
> 0.5V
1.5
-1.5
uA
uA
V
th
V
hys
-40< T
J
< 85
O
C
-40< T
J
< 85
O
C
4.1
4.3
200
4.5
V
mV
T
OTP
150
o
C
©
2005 Semtech Corp.
3
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SEMTECH [ SEMTECH CORPORATION ]
