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HM4115 Datasheet(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

Part # HM4115
Description  1A, Step-down High Brightness LED Driver
PDF  7 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

HM4115 Datasheet(HTML) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd

  HM4115 Datasheet HTML 1Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 2Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 3Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 4Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 5Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 6Page - Shenzhen Huazhimei Semiconductor Co., Ltd HM4115 Datasheet HTML 7Page - Shenzhen Huazhimei Semiconductor Co., Ltd  
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Absolute Maximum Ratings
SYMBOL
ITEMS
VALUE
UNIT
VIN
Supply Voltage
0~40
V
SW
Drain of the internal power switch
-0.5~45
V
DIM
Logic level dimming input
-0.3~6
V
ISW
Switch output current
1.2
A
PDMAX
Power Dissipation (SOT89-5)
1.5
W
PTR
Thermal Resistance, SOT89-5
θJA
45
℃
/W
TJ
Operation Junction Temperature Range
-40 to 150
℃
TSTG
Storage Temperature
-55 to 150
℃
ESD Susceptibility (Note 3)
2
kV
TOPT
Operating Temperature
-40 to +125
℃
Electrical Characteristics (Note 4,5)
The following specifications apply for VIN=12V, TA=25℃, unless specified otherwise.
SYMBOL
ITEMS
CONDITIONS
Min.
Typ.
Max.
UNIT
VIN
Input Voltage
9
36
V
VUVLO
Under voltage lock out
VIN falling
5.4
5.8
6.1
V
VUVLO, HYS
UVLO hysterisis
VIN rising
200
mV
FSW
Max. Switching Frequency
1
MHz
Current Sense
VSEN
Mean current sense
threshold voltage
VIN-VSEN
95
100
105
mV
Operating Current
IIN
supply current
VIN=9~36V
1
2
mA
DIM Input
VDIM
Internal supply voltage
DIM floating
5
V
VDIM_H
DIM input voltage High
3.5
V
VDIM_L
DIM input voltage Low
0.5
V
DutyDIM
Duty cycle range of low
frequency dimming
fDIM =100Hz~1KHz
1
100
%
RDIM
DIM pull up resistor to Internal
supply voltage
100
KΩ
Output Switch
RSW
SW On Resistance
VIN=12V
0.45
Ω
ISWmean
Continuous SW Current
1
A
ILEAK
SW Leakage Current
0.5
5
μA
Thermal Shutdown
TSD
Thermal Shutdown Threshold
165
℃
TSD-hys
Thermal Shutdown hysteresis
30
℃
HM4115



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