参数资料
型号: ICM7228AIBI
厂商: Intersil
文件页数: 14/18页
文件大小: 0K
描述: IC LED DISPLAY DRVR 8DGT 28-SOIC
标准包装: 260
显示器类型: LED
配置: 7 段显示
数字或字符: 8 位数字
电流 - 电源: 200µA
电源电压: 4 V ~ 6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
供应商设备封装: 28-SOIC W
包装: 管件
ICM7228
V DD
P
V DD
V DD
SEGMENT
DATA
≈ 2k ?
COMMON
DIGIT
UP TO
4A
ANODE
OUTPUT
INTERDIGIT
BLANKING
N
≈ 75 ?
SEGMENT
OUTPUT
ICM7228A/C
SHUTDOWN
V SS
FIGURE 12B. SEGMENT DRIVER
V DD
SEGMENT
V DD
10K
FIGURE 12. COMMON ANODE DISPLAY DRIVERS
V DD
P
OUTPUT
DIGIT
≈ 2k ?
V SS
V SS
STROBE
COMMON
CATHODE
FIGURE 14. DRIVING HIGH CURRENT DISPLAY, COMMON
INTERDIGIT
BLANKING
N
≈ 15 ?
DIGIT
OUTPUT
V DD
ANODE ICM7228A/C TO COMMON ANODE
V DD
SHUTDOWN
V SS
FIGURE 13A. DIGIT DRIVER
100 ?
ICM7228B
SEGMENT
OUTPUT
2N2219
V DD
V DD
14 ? (100mA PEAK )
SEGMENT
DATA
INTERDIGIT
BLANKING
P
100 ?
≈ 200mA
COMMON
CATHODE
DIGIT
OUTPUT
N
≈ 15 ?
14mA
2N6034
1.4A PEAK
≈ 2k ?
N
N
SEGMENT
OUTPUT
V SS V SS
FIGURE 15. DRIVING HIGH CURRENT DISPLAY, COMMON
CATHODE ICM7228B TO COMMON CATHODE
≈ 2k ?
SHUTDOWN
V SS
N
DISPLAY
V SS
NOTE: When SHUTDOWN goes low INTERDIGIT BLANKING also
stays low.
FIGURE 13B. SEGMENT DRIVER
FIGURE 13. COMMON CATHODE DISPLAY DRIVERS
14
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