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參數(shù)資料
| 型號(hào)： | AAT3171 |
| 廠商： | Advanced Analog Technology,lnc. |
| 英文描述： | High Current, High Efficiency Charge Pump with Auto-Timer |
| 中文描述： | 大電流，高效率電荷泵與自動(dòng)定時(shí)器 |
| 文件頁(yè)數(shù)： | 5/19頁(yè) |
| 文件大小： | 382K |
| 代理商： | AAT3171 |
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Typical Characteristics
V
IN
= 3.6V, C
IN
= 4.7μF, C
OUT
= 2.2μF, C
1
= C
2
= 1μF, T
A
= 25°C, unless otherwise noted.
Turn-Off from 1.5X Mode
(V
IN
= 3.2V; I
LED
= 150mA)
Time (200μs/div)
EN
(2V/div)
I
IN
(200mA/div)
V
F
(1V/div)
Turn-On to 2X Mode
(V
IN
= 3.2V; I
LED
= 600mA)
Time (200μs/div)
EN
(2V/div)
V
OUT
(2V/div)
I
IN
(500mA/div)
V
SINK
(1V/div)
Turn-On to 1X Mode
(V
IN
= 4.2V; I
LED
= 600mA)
Time (200μs/div)
EN
(2V/div)
V
OUT
(2V/div)
I
IN
(500mA/div)
V
SINK
(1V/div)
Turn-On to 1.5X Mode
(V
IN
= 3.2V; I
LED
= 150mA)
Time (200μs/div)
EN
(2V/div)
V
OUT
(2V/div)
I
IN
(200mA/div)
V
SINK
(1V/div)
Turn-On to 1X Mode
(V
IN
= 4.2V; I
LED
= 150mA)
Time (200μs/div)
EN
(2V/div)
V
OUT
(2V/div)
I
IN
(200mA/div)
V
SINK
(1V/div)
Efficiency vs. Supply Voltage
Supply Voltage (V)
E
0
10
20
30
40
50
60
70
80
90
100
2.7 2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 4.0 4.1 4.2
I
LED
= 300mA
I
LED
= 150mA
AAT3171
High Current, High Efficiency
Charge Pump with Auto-Timer
3171.2007.03.1.1
5
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