參數(shù)資料
型號： CAT4137TD
元件分類： LED驅(qū)動器
英文描述： CMOS Boost Converter- White LED Driver
中文描述： 的CMOS升壓轉(zhuǎn)換器，白光LED驅(qū)動器
文件頁數(shù)： 2/14頁
文件大?。?/td> 504K
代理商： CAT4137TD
CAT4137
2005 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
2 of 14
Doc. 5012 , Rev. A
ABSOLUTE MAXIMUM RATINGS
Parameter
VIN, FB voltage
SHDN* voltage
SW voltage
Storage Temperature Range
Junction Temperature Range
Lead Temperature
RECOMMENDED OPERATING CONDITIONS
Parameter
VIN
SW pin voltage
Ambient Temperature Range
LED Bias Current
ELECTRICAL OPERATING CHARACTERISTICS
VIN = 3.6V, ambient temperature of 25oC (over recommended operating conditions unless specified otherwise)
Symbol Parameter
Conditions
I
Q
Operating Current
V
FB
= 0.3V
V
FB
= 0.4V (not switching)
I
SD
Shutdown Current
V
SHDN*
= 0V
V
FB
FB Pin Voltage
3 LEDs with I
LED
=20mA
I
FB
FB pin input leakage
I
LED
Programmed LED Current
R1 = 15
R1 = 20
V
IH
V
IL
SHDN* Logic Low
Shutdown Threshold Level
F
SW
Switching Frequency
I
LIM
Switch Current Limit
R
SW
Switch “On” Resistance
I
SW
= 100mA
I
LEAK
Switch Leakage Current
Switch Off, V
SW
= 5V
T
SD
Thermal Shutdown
T
HYS
Thermal Hysteresis
η
Efficiency
Typical Application Circuit
V
UVLO
Under-voltage lock out
(UVLO) threshold
V
OV-SW
Output Clamp Voltage
“Open LED” fault
Rating
-0.3 to +7
-0.3 to +7
-0.3 to 40
-65 to +160
-40 to +125
300
Unit
V
V
V
°
C
°
C
°
C
Range
2.2 to 5.5
0 to 24
-40 to +85
1 to 30
Unit
V
V
°
C
mA
Min
Typ
0.4
0.1
0.1
300
0.1
30
20
15
0.8
0.7
1
300
1.0
1
150
20
86
1.9
Max
1.5
0.3
1
315
1
31.5
21
15.75
1.5
1.3
400
2.0
5
Unit
mA
μA
mV
μA
mA
285
28.5
19
14.25
0.4
0.7
250
R1 = 10
SHDN* Logic High
Enable Threshold Level
V
V
MHz
mA
μA
oC
oC
%
V
29
V
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