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HM2803 Folha de dados(PDF) 3 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Nome de Peças HM2803
Descrição Electrónicos  HB-LED driver chip
PDF  8 Pages
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Fabricante Electrônico  HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]
Página de início  http://www.hmsemi.com/
Logo HMSEMI - Shenzhen Huazhimei Semiconductor Co., Ltd

HM2803 Folha de dados(HTML) 3 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

  HM2803 Datasheet HTML 1Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 2Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 3Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 4Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 5Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 6Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 7Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM2803 Datasheet HTML 8Page - Shenzhen Huazhimei Semiconductor Co., Ltd  
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3
热损耗信息
描述
范围
单位
封装热阻
( θJA )
“热阻(Junction to Ambient)θJA”
SOT23-6
250
°C/W
功耗
, PD@TA=25°C
“热阻(Junction to Case)θJC”
SOT23-6
0.4
W
推荐工作条件
描述
范围
单位
工作结温
-40 ~ 125
°C
工作环境温度
-40 ~ 85
°C
电源电压
+0.9 ~ +3.0
V
ILED输出电流
1
A
注 2：推荐工作范围是指在该范围内，器件功能正常，但并不完全保证满足个别性能指标。
电特性
T=25℃，L=2.2uH，CD43，C1=10uF ,C2=10uF，负载:科锐 3W LED(VF=3.0V)
参数
符号
条件
最小
典型
最大
单位
输入电压
VIN
0.9
VF-0.2V
V
电流检测阀值
VFB
90
95
100
mV
启动电压
VSTART
Vin:0V~3V；ILED=200mA
0.9
V
保持电压
VHOLD
Vin:3V~0V；
ILED=750mA~100mA
0.7
V
使能输入高电平电压
VENH
VIN＝2.4V
0.60
V
使能输入低电平电压
VENL
VIN＝2.4V
0.30
V
开关频率
Ff
1.0
MHz
过温关断
OTS
160
°C
过温滞后
OTH
30
°C
最大输出电流
Io(MAX)
1000
m A
静态电流
IQ
EN 使能关断
1
u A
开关导通电阻
RDS(ON)
0.1
Ω



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