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參數(shù)資料
| 型號： | MAX1913 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 60mA 1.5x High-Efficiency White LED Charge Pumps |
| 中文描述： | 60mA的1.5倍高效率白光LED電荷泵 |
| 文件頁數(shù)： | 3/11頁 |
| 文件大?。?/td> | 275K |
| 代理商： | MAX1913 |
M
60mA 1.5x High-Efficiency White LED
Charge Pumps
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(V
IN
= 3.6V, GND = 0,
SHDN
= SET = IN, C
IN
= 2.2μF, C1 = C2 = 0.47μF, C
OUT
= 2.2μF,
T
A
= -40
°
C to +85
°
C
, unless otherwise
noted.) (Note 1)
PARAMETER
CONDITIONS
MIN
MAX
10
UNITS
μA
Output Leakage Current in Shutdown
MAX1912
SET Regulation Point
SET Input Current
SHDN
Input Current
SHDN
Input Voltage Low
SHDN
Input Voltage High
V
IN
= 3.6V,
SHDN
= 0
0 < I
LOAD
< 60mA
0.19
0.21
V
100
1
0.4
nA
μA
V
V
SHDN
= 0 or 5.5V
2.7V < V
IN
< 5.3V
2.7V < V
IN
< 5.3V
1.6
Note 1:
Limits to -40
°
C are guaranteed by design, not production tested.
Typical Operating Characteristics
(T
A
= +25
°
C, unless otherwise noted.)
V
OUT
V
IN1
20mV/div
INPUT AND OUTPUT VOLTAGE RIPPLE
M
C
IN
= 10
μ
F, C
OUT
= 4.7
μ
F
MAX1912 DRIVING 4 LEDS (60mA)
V
IN
= 3.3V
1
μ
s/div
V
OUT
V
IN
20mV/div
INPUT AND OUTPUT VOLTAGE RIPPLE
WITH ADDITIONAL INPUT FILTER
M
MAX1912 DRIVING 4 LEDS (60mA)
10
μ
F - 1
- 10
μ
F INPUT FILTER, C
OUT
= 4.7
μ
F
V
IN
= 3.3V
1
μ
s.div
4
3
2
1
0
0
3
1
2
4
5
6
QUIESCENT CURRENT vs.
INPUT VOLTAGE
M
V
IN
(V)
I
I
V
OUT
I
IN
5V/div
1V/div
50mA/div
STARTUP INPUT CURRENT AND
OUTPUT VOLTAGE
MAX1912/13 toc04
CIRCUIT OF FIGURE 2
R1 = R2 = R3 = 15
C
IN
= 10
μ
F, C
OUT
= 2.2
μ
F
V
IN
= 3.3V
V
SHDN
1ms/div
V
SET
I
LED
2V/div
100mV/div
15mA
45mA
INTENSITY CHANGE STEP RESPONSE
MAX1912/13 toc05
CIRCUIT OF FIGURE 10
R
A
= 22k
, R
B
= 1.5k
, R
L
= 4.7
C
IN
= 10
μ
F, C
OUT
= 4.7
μ
F
V
LOGIC(HIGH)
= 2V
V
LOGIC
50
μ
s/div
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