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PDF LC201S Data sheet ( Hoja de datos )
| Número de pieza | LC201S | |
| Descripción | Power Supply IC | |
| Fabricantes | Sanken | |
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Power Supply IC for Microcomputer
LC201S
General Descriptions
LC201S is the power supply IC for microcomputer of
lighting, incorporating a start up circuit and a linear
regulator.
There are two outputs. The output voltage of OUT1 can
be switched 9 V or 20 V. The output voltage of OUT2 is
5V. The product achieves high cost-performance power
supply systems with few external components for
microcomputer.
Features
Built-in startup circuit
Power dissipation of the startup circuit is zero.
(When the power of IC is supplied from external
power supply)
OUT1 pin voltage is selectable from 9 V or 20 V by
SL pin voltage.
(When the power of IC is supplied from internal
startup circuit)
OUT2 voltage is fixed to 5V
Current Sink Function
(In case OUT1 pin voltage decreases, OUT2 pin is
fixed to Low state)
Typical Application Circuit
VAC
BR1
87 65
C1 ST NC NC OUT1
U1
LC201S
GND SL SINK OUT2
1234
C2
Micro
computer
R1
C3
Package
SOP8
Not to scale
Applications
Various lighting fixtures
Fluorescent lamp, ceiling light, street light and down
light, etc.
Electronic equipment with microcomputer
LC201S-DS Rev.1.2
Mar. 30, 2016
SANKEN ELECTRIC CO.,LTD.
http://www.sanken-ele.co.jp/en/
1
1 page  
LC201S
5. Typical Application Circuit
Figure 5-1 shows the standalone LC201S operation circuit. The power is supplied to IC via ST pin.
Figure 5-2 shows the LC201S circuit with external power supply. The power is supplied to IC from auxiliary
winding of external power supply via OUT1 pin.
VAC
BR1
87 65
C1 ST NC NC OUT1
U1
LC201S
GND SL SINK OUT2
1234
C2
R1 C3
Microcomputer
Figure 5-1 Standalone LC201S circuit
Power supply for lighting
Light
VAC
BR1
C1
87 65
D1
ST NC NC OUT1
U1
LC201S
GND SL SINK OUT2
C2
1234
R1 C3
Microcomputer
Figure 5-2 LC201 circuit with external power supply.
LC201S-DS Rev.1.2
Mar. 30, 2016
SANKEN ELECTRIC CO.,LTD.
5
5 Page 
LC201S
10.3 Typcal Operation Waveform
Normal Operation Waveform
AC 80 V (SL = GND)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
AC 265 V (SL = GND)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
Operation Waveform when Input Voltage is Varied
AC 80 V→AC 265 V (SL = Open)
AC 265V→AC 80 V (SL = Open)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
AC 80 V→AC 265 V (SL = GND)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
AC 265V→AC 80 V (SL = GND)
(Ch1: AC, Ch2: OUT1, Ch3: OUT2)
LC201S-DS Rev.1.2
Mar. 30, 2016
SANKEN ELECTRIC CO.,LTD.
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet LC201S.PDF ] | |
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