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HM1549 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM1549
Description  2A High Efficiency Step-Up DC/DC Voltage Regulator
PDF  6 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

HM1549 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

  HM1549 Datasheet HTML 1Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM1549 Datasheet HTML 2Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM1549 Datasheet HTML 3Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM1549 Datasheet HTML 4Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM1549 Datasheet HTML 5Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM1549 Datasheet HTML 6Page - Shenzhen Huazhimei Semiconductor Co., Ltd  
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■ 电学特性参数
(VIN=5V,Ta=25℃,除非另有指定)
■ 典型特性曲线
效率
线性调整度和负载调整度
项目
符号
条件
最小值
典型值
最大值
单位
输出电压
VOUT
-
2.5
28
V
输入电压
VIN
-
2
-
24
输入欠压保护
UVLO_F
1.7
2
V
欠压保护迟滞
UVLO_HYS
-
-
100
-
mV
关断电流
IOFF
VEN<VENL
-
0.01
1
µA
无负载电流
IC
VIN=3.6V,VOUT=5V
-
100
-
μA
反馈基准电压
VR
VOUT=5V
588
600
612
mV
开关频率
FS
IOUT=1.2A
-
1.2
-
MHz
最大占空比
DMAX
VFB=0V
85
-
-
%
功率管内阻
RDSON
VIN=3.6V,ISW=2A
-
80
150
开关电流
ISW
VIN=4.2V
-
4
-
A
线性调整度
ΔVLINE
IOUT=1.2A,VIN=3V 到 4.2V
-
0.4
-
%
负载调整度
ΔVLOAD
VIN=3.6V,IOUT=10mA 到 1.2A
-
0.45
-
%
EN 高电平
VENH
VIN=3.6V
1.2
-
-
V
EN 低电平
VENL
VIN=3.6V
-
-
0.4
V
SW 端漏电流
ISW_L
VSW=20V
1
uA
过热关断温度
TSHD
VIN=3.6V,IOUT=10mA
-
160
-
HM1549



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