参数资料
型号: LTC3220IPF-1#PBF
厂商: Linear Technology
文件页数: 13/20页
文件大小: 0K
描述: IC LED DRVR QVGA DISPLAY 28UTQFN
标准包装: 91
拓扑: 开路漏极,升压(升压),切换式电容器(充电泵)
输出数: 18
内部驱动器:
类型 - 主要: 背光
类型 - 次要: LED 闪烁器
频率: 850kHz ~ 1.05MHz
电源电压: 2.9 V ~ 5.5 V
安装类型: 表面贴装
封装/外壳: 28-UFQFN 裸露焊盘
供应商设备封装: 28-UTQFN(4x4)裸露焊盘
包装: 管件
工作温度: -40°C ~ 125°C
LTC3220/LTC3220-1
OPERATION
Data Bytes
REG1 to REG18, Universal LED 6-bit linear DAC data with
blink/gradation.
Sub-Address 00001 to 10010 per Sub-Address Table
Blink/Gradation/Dropout Enable
MSB
LED Current Data
LSB
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Normal
Blink Enabled
Gradation Enabled
0
0
1
0
1
0
D5
D5
D5
D4
D4
D4
D3
D3
D3
D2
D2
D2
D1
D1
D1
D0
D0
D0
GPO Mode*
Strong Pull-Down Mode
Current Limited Mode
High Impedance/Off
1
1
0
1
1
0
0
D5
0
0
D4
0
0
D3
0
0
D2
0
0
D1
0
0
D0
0
*(Gradation/Blink/Dropout Off)
REG19, Gradation and Blinking
MSB
LSB
D7
Unused
D6
Unused
D5
Unused
D4
GB4
D3
GB3
D2
GB2
D1
GB1
D0
Up
Up
0
1
Gradation counts down
Gradation counts up
Blink Times and Period
Gradation Ramp Times and Period
D4 (GB4)
0
0
1
1
D3 (GB3)
0
1
0
1
On Time
0.625s
0.156s
0.625s
0.156s
Period
1.25s
1.25s
2.5s
2.5s
D2 (GB2)
0
0
1
1
D1 (GB1)
0
1
0
1
Ramp Time
Disabled
0.24s
0.48s
0.96s
Period
Disabled
0.313s
0.625s
1.25s
32201fc
13
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