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參數(shù)資料
| 型號： | CAT4201TD-GT3 |
| 元件分類： | LED驅(qū)動器 |
| 英文描述： | 350mA High Efficiency Step Down LED Driver |
| 中文描述： | 350mA的高效率LED驅(qū)動下步 |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 330K |
| 代理商： | CAT4201TD-GT3 |
CAT4201
Doc. No. MD-5025 Rev. B
2
Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
ABSOLUTE MAXIMUM RATINGS
(1)
Parameters
VBAT, SW, CTRL
RSET
Switch SW peak current
Storage Temperature Range
Junction Temperature Range
Lead Temperature
Ratings
-0.3 to +40
-0.3 to +5
1
-65 to +160
-40 to +150
300
Units
V
V
A
°
C
°
C
°
C
RECOMMENDED OPERATING CONDITIONS
Parameters
VBAT voltage
(2) (3)
SW voltage
Ambient Temperature Range
LED Current
Switching Frequency
Ratings
6.5 to 28
(2)
0 to 28
-40 to +125
50 to 350
50 to 1000
Units
V
V
°
C
mA
kHz
ELECTRICAL CHARACTERISTICS
V
IN
= 13V, ambient temperature of 25oC (over recommended operating conditions unless specified otherwise)
Symbol
Parameter
Operating Supply Current on
VBAT pin
Idle Mode Supply Current on
VBAT pin
Conditions
Min
Typ
Max
Units
I
Q
0.4
1
mA
I
SD
CTRL
= GND
90
μA
V
FB
RSET Pin Voltage
2 LEDs with I
LED
= 300mA
R1 = 33k
R1 = 10k
R1 = 8.25k
1.15
1.2
1.25
V
I
LED
Programmed LED Current
270
100
300
350
330
mA
V
CTRL-FULL
CTRL Voltage for 100%
Brightness
CTRL Voltage to Enable
LEDs
CTRL Voltage to Shutdown
LEDs
2.6
3.1
V
V
CTRL-EN
LED enable voltage threshold
0.9
1.2
V
V
CTRL-SD
LED disable voltage threshold
0.4
0.9
V
I
CTRL
CTRL pin input bias
V
CTRL
= 3V
V
CTRL
= 12V
I
SW
= 300mA
Typical Application Circuit
40
200
0.9
150
20
86
80
1.5
μA
R
SW
T
SD
T
HYST
η
Switch “On” Resistance
Thermal Shutdown
Thermal Hysteresis
Efficiency
oC
oC
%
Notes:
(1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings
only, and functional operation of the device at these or any other conditions outside of those listed in the operational sections of this
specification is not implied. Exposure to any absolute maximum rating for extended periods may affect device performance and reliability.
(2) The VBAT pin voltage should be at least 3V greater than the total sum of the LED forward voltages in order to operate at nominal LED
current.
(3) During power-up, the slew rate of the input supply should be greater than 5μs.
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