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PDF SIC9952 Data sheet ( Hoja de datos )
| Número de pieza | SIC9952 | |
| Descripción | Non-Isolated Buck Section Switch Dimming LED Driver | |
| Fabricantes | SI Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SIC9952 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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深圳深爱半导体股份有限公司
产品规格书
Shenzhen SI Semiconductors Co., LTD.
Product Specification
Non-Isolated Buck Sections Switch Dimming LED Driver SIC9952(B)/9953(B)/9954(B)
General Description
The SIC9952(B)/9953(B)/9954(B) are high-precision buck four(4) or three(3) sections switch
dimming drivers for 86Vac-265Vac universal input non-isolated buck constant current LED lighting
Application. Operation in critical continuous mode, the power MOSFET switching loss is reduced and
the inductor is fully utilized. Output current does not vary with the inductance and the LED voltage,
excellent LED load regulation achieved.
The SIC9952/9953/9954 are four(4) sections dimming, the first switch on power output current 100%,
the second switch output current then becomes 50%, and the third switch output current becomes 25%,
the fourth switch then becomes 12.5%. The SIC9952B/9953B/9954B are three(3) sections dimming
respectively 100%, 50%, 12.5%. If the power off time is more than 5 seconds, the system will be rest,
and then the stage will go the first stage.
The SIC9952(B)/9953(B)/9954(B) integrates 500V power MOSFET. It doesn’t need the auxiliary
winding for sensing and supplying the chip. With very few external components, the system cost
and size are minimized.The SIC9952(B)/9953(B)/9954(B) with multiple protection features, including
LED short/open circuit protection, CS resistor short circuit protection, Vcc under voltage protection,
chip overheating regulation.
The SIC9952(B)/9953(B)/9954(B) are available in SOP-8/DIP-7 package.
Features
· 4 or 3 sections switch dimming
· Integrated 500V power transistor
· No auxiliary winding
· Ultra-low operating current
· Universal Input Voltage
· LED open circuit protection
· LED short-circuit protection
· Current Sense resistor short circuit protection
· VCC Over-voltage and Under-voltage Protection
· Over Temperature Protection
Typical Application
Si semiconductors
- 1 - SIC9952(B)/9953(B)/9954(B)_EN_Rev3.0
1 page  
深圳深爱半导体股份有限公司
Shenzhen SI Semiconductors Co., LTD.
Non-Isolated Buck Sections Switch Dimming LED Driver
Leading Edge Blanking
Time for Current Sense
TLEB
Switch Off Delay Time
TDELAY
Internal Time Control Section
Minimum OFF Time
Maximum OFF Time
Maximum On Time
TOFF_MIN
TOFF_MAX
TON_MAX
ROVP Pin Voltage
VROVP
SIC9952(B)
SIC9953(B)
SIC9954(B)
MOSFET
RDS(ON)
RDS(ON)
VGS=15V/ IDS=0.2A
Breakdown Voltage for
internal MOSFET
BVDSS
VGS=0V/ IDS=250uA
Drain Leakage Current for
internal MOSFET
IDSS
VGS=0V/ VDS=500V
Over Temperature Protection
Thermal Regulation
Temperature
TREG
产品规格书
Product Specification
SIC9952(B)/9953(B)/9954(B)
350 ns
200 ns
4.5 us
240 us
40 us
0.5 V
16
10 Ω
6
500 V
1 uA
150 ℃
Functional Block Diagram
Si semiconductors
- 5 - SIC9952(B)/9953(B)/9954(B)_EN_Rev3.0
5 Page 
深圳深爱半导体股份有限公司
产品规格书
Shenzhen SI Semiconductors Co., LTD.
Product Specification
Non-Isolated Buck Sections Switch Dimming LED Driver SIC9952(B)/9953(B)/9954(B)
符号
SYMBOL
A
A1
A2
A3
A4
A5
B
C
C1
最小值
min
9.00
1.474
0.41
2.44
6.10
3.20
6.80
DIP7 封装机械尺寸
DIP7 MECHANICAL DATA
单位:毫米/UNIT：mm
典型值
最大值
符号
最小值
典型值
最大值
nom
max
SYMBOL
min
nom
max
9.30
C2
0.50TYP
1.574
C3
3.20
3.40
0.51 C4 1.47
1.57
2.64 D 8.00
8.80
0.51TYP
D1 0.244
0.264
0.99TYP
D2 7.45
7.87
6.40
Θ1
17°TYP4
3.40
Θ2
10°TYP4
7.40
Θ3
8°TYP
Si semiconductors
- 11 -
SIC9952(B)/9953(B)/9954(B)_EN_Rev3.0
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet SIC9952.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SIC9952 | Non-Isolated Buck Section Switch Dimming LED Driver | SI Semiconductors |
| SIC9952B | Non-Isolated Buck Section Switch Dimming LED Driver | SI Semiconductors |
| SIC9953 | Non-Isolated Buck Section Switch Dimming LED Driver | SI Semiconductors |
| SIC9953B | Non-Isolated Buck Section Switch Dimming LED Driver | SI Semiconductors |
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