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HM9950 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM9950
Description  brightness LED constant current drive controller
Download  9 Pages
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Manufacturer  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
Direct Link  http://www.hmsemi.com/
Logo HMSEMI - Shenzhen Huazhimei Semiconductor Co., Ltd

HM9950 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

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电特性
除非特别说明,VIN =12V,TA =25
oC
参数
符号
测试条件
最小值
典型值
最大值
单位
电源电压
最大输入电压
VIN_MAX
5.5
36
V
欠压保护电压
VUVLO
VIN =VCS,VADJ =VCC
VIN 电压从 0V 上升
5
5.5
V
欠压保护
滞回电压
VHYS
0.9
V
电源工作电流
IIN
5
mA
电源待机电流
IST
ADJ=0
400
uA
开关频率
最大开关频率
FSW_MAX
1
MHz
电流检测比较器
检测电压高值
VCSH
VIN -VCS)从 0.1V 上升,
直至
DRV 输出低电平
220
mV
检测电压低值
VCSL
VIN -VCS)从 0.3V 下降,
直至
DRV 输出高电平
180
mV
比较器输入电流
ICS
5
uA
高电平输出延迟
TDPDH
80
ns
低电平输出延迟
TDPDL
80
ns
ADJ 脚辉度控制
最大调光频率
FADJ
5
KHz
ADJ 输入高电平
VIH
2.5
V
ADJ 输入低电平
VIL
0.3
V
ADJ 模拟调光电
压范围
VADJ_DC
0.5
2.5
V
HM9950


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