参数资料
型号: LTC3218EDDB#TRMPBF
厂商: Linear Technology
文件页数: 4/12页
文件大小: 0K
描述: IC LED DRVR FLASH TORCH 10DFN
标准包装: 500
拓扑: 升压(升压),切换式电容器(充电泵)
输出数: 1
内部驱动器:
类型 - 主要: 闪灯/白光
类型 - 次要: 白色 LED
频率: 1MHz
电源电压: 2.9 V ~ 4.5 V
输出电压: 5.3V
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
供应商设备封装: 10-DFN-EP(3x2)
包装: 带卷 (TR)
工作温度: -40°C ~ 85°C
LTC3218
TYPICAL PERFORMANCE CHARACTERISTICS
2x Mode Charge Pump
T A = 25°C, unless otherwise noted.
1x Mode Charge Pump Open-Loop
Open-Loop Output Resistance
Output Resistance vs Temperature
(2V IN – V CPO )/I CPO vs Temperature
Oscillator Frequency vs V IN
1.8
1.6
1.4
I CPO = 50mA
V IN = 2.9V
10
9
8
V IN = 3.6V
1100
1080
T = –40°C
1.2
7
1060
1.0
0.8
0.6
V IN = 4.5V
V IN = 3.6V
6
5
4
3
1040
1020
1000
T = 25°C
T = 85°C
0.4
2
0.2
1
980
0
–40
–15
10
35
60
85
0
–40
–15
10
35
60
85
960
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
1400
1300
1200
1100
1000
900
800
700
600
500
TEMPERATURE (°C)
3218 G04
Torch Mode I LED /I SET Current Ratio
vs I LED Current
3500
3300
3100
2900
2700
2500
2300
2100
1900
1700
TEMPERATURE (°C)
Flash I LED /I SET Current Ratio
vs I LED Current
(ENT = LOW, ENF = HIGH)
3218 G05
4500
4300
4100
3900
3700
3500
3300
3100
2900
2700
V IN (V)
Flash I LED /I SET Current Ratio
vs I LED Current
(ENT = ENF = HIGH)
3218 G06
400
50 60 70 80 90 100 110 120 130 140 150
1500
100
150
200
250 300
350
400
2500
100
150
200
250 300
350
400
160
I LED CURRENT (mA)
3218 G07
Torch Mode I LED Current vs V IN
450
I LED CURRENT(mA)
3218 G08
Flash Mode I LED Current vs V IN
(ENT = ENF = HIGH)
450
I LED CURRENT(mA)
3218 G09
Flash Mode I LED Current vs V IN
(ENT = LOW, ENF = HIGH)
140
400
R SETF = 10.2k
400
R SETF = 7.49k
120
100
80
60
R SETT = 7.49k
R SETT = 10.2k
R SETT = 20k
350
300
250
200
150
R SETF = 20k
350
300
250
200
150
R SETF = 10.2k
R SETF = 20k
40
R SETT = 40.2k
100
R SETF = 40.2k
100
R SETF = 40.2k
20
50
50
0
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
0
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
0
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
V IN (V)
3218 G10
V IN (V)
3218 G11
V IN (V)
3218 G12
3218fb
4
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