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参数资料
| 型号： | MAX8631YETI+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/15页 |
| 文件大小： | 0K |
| 描述： | IC LED DRVR WHITE BCKLGT 28-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 恒定电流： | 是 |
| 拓扑： | 线性（LDO），切换式电容器（充电泵） |
| 输出数： | 8 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，闪灯/白光 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 2.7 V ~ 5.5 V |
| 输出电压： | 5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-WFQFN 裸露焊盘 |
| 供应商设备封装： | 28-TQFN-EP（4x4） |
| 包装： | 带卷 (TR) |
| 工作温度： | -40°C ~ 85°C |
1x/1.5x/2x White LED Charge Pump with
Two LDOs in 4mm x 4mm Thin QFN
Typical Operating Characteristics (continued)
(V IN = V EN_ = 3.6V, circuit of Figure 1, T A = +25°C, unless otherwise noted.)
900
BATTERY CURRENT vs. SUPPLY
VOLTAGE DRIVING FLASH
160
LDO GROUND PIN SUPPLY
CURRENT vs. SUPPLY VOLTAGE
1.2
INPUT RIPPLE VOLTAGE vs. SUPPLY
VOLTAGE WITH FOUR MAIN LEDs
800
150
V ENM = V ENF = 0V, V ENLDO = V IN
1.0
I LED = 15mA
700
600
500
400
300
200
100
I FLASH = 400mA
I FLASH = 160mA
I FLASH = 80mA
140
130
120
110
100
90
NO LOAD, BOTH LDOs
150mA, BOTH LDOs
0.8
0.6
0.4
0.2
I LED = 4.5mA
I LED = 1.5mA
0
80
0
2.7
3.0
3.3
3.6
3.9
4.2
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
10
SUPPLY VOLTAGE (V)
INPUT RIPPLE VOLTAGE vs. SUPPLY
VOLTAGE WITH FLASH AND MAIN LEDs
16.0
SUPPLY VOLTAGE (V)
LED CURRENT MATCHING vs. SUPPLY
VOLTAGE WITH FOUR MAIN LEDs
102.0
SUPPLY VOLTAGE (V)
LED CURRENT MATCHING vs. SUPPLY
VOLTAGE WITH FOUR FLASH LEDs
9
8
7
6
5
4
3
2
1
0
FOUR MAIN LEDs AT 15mA EACH
I FLASH = 10mA
I FLASH = 40mA
I FLASH = 100mA
15.8
15.6
15.4
15.2
15.0
14.8
14.6
14.4
14.2
14.0
101.5
101.0
100.5
100.0
99.5
99.0
98.5
98.0
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
70
60
50
40
30
SUPPLY VOLTAGE (V)
LED CURRENT vs. AMBIENT
TEMPERATURE WITH FOUR MAIN LEDs
450
400
350
300
250
200
SUPPLY VOLTAGE (V)
LED CURRENT vs. AMBIENT
TEMPERATURE WITH FLASH
100
10
SUPPLY VOLTAGE (V)
INDIVIDUAL MAIN LED CURRENT
vs. R SETM
150
20
100
10
50
0
0
1
-40
-15
10
35
60
85
-40
-15
10
35
60
85
1
10
100
AMBIENT TEMPERATURE ( ° C)
AMBIENT TEMPERATURE ( ° C)
R SETM (k Ω )
_______________________________________________________________________________________
5
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