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參數(shù)資料
| 型號(hào)： | CAT37TDI-TE7 |
| 元件分類(lèi)： | LED驅(qū)動(dòng)器 |
| 英文描述： | CMOS White LED Driver Boost Converter |
| 中文描述： | 的CMOS白光LED驅(qū)動(dòng)器升壓轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 3/12頁(yè) |
| 文件大?。?/td> | 566K |
| 代理商： | CAT37TDI-TE7 |
CAT37
3
Doc No. 5005, Rev. S
2005 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
ABSOLUTE MAXIMUM RATINGS
V
IN
, FB,
SHDN
Voltage......................................... 8 V
SW Voltage .......................................................... 20 V
Junction Temperature....................................... 125
°
C
ELECTRICAL SPECIFICATIONS
Over recommended operating conditions unless otherwise specified. T
A
= 25
C, V
IN
= 3V and V
SHDN
= 3V.
Storage Temperature.......................... -65
°
C to 160
°
C
ESD Rating - Human Body Model .................... 2000V
Lead Soldering Temperature ............................ 300
°
C
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Input Voltage Range
2.5
7
V
I
Q
Quiescent Current
V
FB
= 0.2 V
0.5
0.7
mA
I
SD
Shutdown Current
V
SHDN
= 0 V
0.05
1
μ
A
V
FB
FB Pin Voltage
4 LEDs at 15 mA
85
95
105
mV
I
FB
FB Pin Leakage Current
1
2
μ
A
Shutdown High Threshold
0.85
V
Shutdown Low Threshold
0.25
V
I
SHDN
Shutdown Pin Current
1
nA
f
SW
Boost Converter Frequency
0.8
1.2
1.6
MHz
DC
Maximum Switch
Duty Cycle
90
95
%
I
SWL
Switch Current Limit
400
550
780
mA
Switch Saturation Voltage
I
SW
= 300 mA
150
200
mV
Switch Leakage Current
Switch Off, V
SW
= 5 V
0.01
5
μ
A
Efficiency
Figure 1 with
specified components
83
%
RECOMMENDED OPERATING CONDITIONS
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7
o
5
V
e
g
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R
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T
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m
A
5
8
+
o
0
4
°
C
1
L
r
u
d
n
l
c
y
%
0
2
±
8
H
μ
1
C
r
a
p
a
C
t
p
n
l
c
y
%
0
2
±
0
F
μ
2
C
r
a
p
a
C
t
p
O
l
c
y
%
0
2
±
0
F
μ
I
D
E
L
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e
s
n
s
D
E
L
4
o
1
h
w
0
2
o
0
A
m
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