参数资料
型号: LTC3216EDE#PBF
厂商: Linear Technology
文件页数: 4/12页
文件大小: 0K
描述: IC CHARGE PUMP LED 12-DFN
标准包装: 91
应用: 转换器,高电流 LED
输入电压: 2.9 V ~ 4.4 V
输出数: 1
输出电压: 多重
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 12-WFDFN 裸露焊盘
供应商设备封装: 12-DFN(4x3)
包装: 管件
LTC3216
TYPICAL PERFORMANCE CHARACTERISTICS
(T A = 25°C unless otherwise speci?ed)
1x Mode Charge Pump Open-
Loop Output Resistance vs
Temperature
1.5x Mode Charge Pump
Open-Loop Output Resistance
(1.5V IN – V CPO )/I CPO vs Temperature
2x Mode Charge Pump
Open-Loop Output Resistance
(2V IN – V CPO )/I CPO vs Temperature
0.31
0.29
0.27
0.25
I CPO = 200mA
V IN = 3.6V
V IN = 3.3V
V IN = 3.9V
1.8
1.6
1.4
1.2
1.0
2.0
1.8
1.6
1.4
1.2
0.23
1.0
V IN = 3V
V CPO = 4.8V
0.21
0.19
0.17
0.15
–40
–15
10
35
60
85
0.8
0.6
0.4 V IN = 3V
V CPO = 4.2V
0.2 C IN = C1 = C2 = 2.2μF
C CPO = 4.7μF
0
–40 –15 10
35
60
85
0.8
0.6
0.4
0.2 C IN = C1 = C2 = 2.2μF
C CPO = 4.7μF
0
–40 –15 10
35
60
85
4.0
3.5
TEMPERATURE ( ° C)
Input Shutdown Current
vs Input Voltage
3216 G04
930
920
TEMPERATURE ( ° C)
Oscillator Frequency
vs Supply Voltage
3216 G05
100
90
TEMPERATURE ( ° C)
Ef?ciency vs V IN
3216 G06
3.0
2.5
2.0
1.5
1.0
T A = 85°C
T A = 25°C
T A = –40°C
910
900
890
880
870
860
T A = 25°C
T A = –40°C
T A = 85°C
80
70
60
50
40
30
20
200mA
400mA
600mA
I LED = 800mA
0.5
850
10
0
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
840
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
0
LED = LXCL-PWF1 LUMILED S
2.8 3.0 3.2 3.4 3.6 3.8
4.0
4.2
4.4
INPUT VOLTAGE (V)
3216 G07
I SET /I LED Current Ratio vs I LED
Current
3400
3350
SUPPLY VOLTAGE (V)
3216 G08
1.5x Mode CPO Output Ripple
V IN (V)
3216 G09
3300
T A = –40°C
T A = 25°C
V CPO
50mV/DIV
A/C COUPLED
3250
T A = 85°C
3200
3150
V IN = 3.6V
500ns/DIV
3216 G11
I CPO = 200mA
3100
0 100 200 300 400 500 600 700 800 900
I LED CURRENT(mA)
3216 G10
3216fc
4
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