CAT37 CATALYST [Catalyst Semiconductor], CAT37 Datasheet - Page 3

• Manufacturer Part Number: CAT37
• Description: CMOS White LED Driver Boost Converter
• Manufacturer: CATALYST [Catalyst Semiconductor]

V
SW Voltage .......................................................... 20 V
Junction Temperature ....................................... 125 C
Over recommended operating conditions unless otherwise specified. T
I
IN
A
L
Symbol
E
m
D
, FB, SHDN Voltage ......................................... 8 V
I
SHDN
I
V
f
DC
I
SWL
b
I
i w
SW
I
SD
FB
O
Q
FB
e i
n I
h t
u
t n
p
p t
1
t u
P
T
n I
t u
a
e
o t
d
C
m
a r
C
Parameter
Input Voltage Range
Quiescent Current
Shutdown Current
FB Pin Voltage
FB Pin Leakage Current
Shutdown High Threshold
Shutdown Low Threshold
Shutdown Pin Current
Boost Converter Frequency
Maximum Switch
Duty Cycle
Switch Current Limit
Switch Saturation Voltage
Switch Leakage Current
Efficiency
u
a
4
V
a
p
t c
m
p
N I
e
p
L
a
r o
t e
a
a r
E
t i c
t i c
D
r e
u t
L
r o
s
1
r o
e r
n i
C
C
R
1
s
2
a
r e
n
e i
g
e
s
6
1
1
8 .
0 .
0 .
4 -
±
±
±
2
R
0
2
0
2
2
5 .
0
a
0
0
o t
o t
n
%
%
%
specified components
Switch Off, V
o t
g
2
+
4 LEDs at 15 mA
y t
y t
y t
e
0
7
8
I
Figure 1 with
p
p
p
V
5
Conditions
SW
V
c i
c i
c i
SHDN
FB
l a
l a
l a
= 300 mA
= 0.2 V
= 0 V
3
SW
= 5 V
Storage Temperature .......................... -65 C to 160 C
ESD Rating - Human Body Model .................... 2000V
Lead Soldering Temperature ............................ 300 C
U
m
µ
µ
µ
V
n
H
F
F
A
A
C
t i
0.85
Min
400
2.5
0.8
85
90
= 25˚C, V
0.05
0.01
Typ
IN
550
150
0.5
1.2
95
95
83
1
= 3V and V
Max
0.25
105
780
200
0.7
1.6
7
1
2
1
5
SHDN
Doc No. 5005, Rev. R
= 3V.
Units
MHz
mA
mV
mA
mV
nA
%
%
V
V
V
A
A
A