LC5222S Datasheet, PDF (1/8 Pages) Sanken electric – Hybrid Integrated Circuit

LED Lighting IC
LC5222S
13 October 2011
◆Description
LC5222S is non-isolated type driver IC for LED lighting
which can achieve high efficiency in simple circuitry. Its
compact package which includes output MOSFET and
controller, and low external components are suitable for
small lighting equipment which requires saving space, like
LED light bulb.
To meet various requirements, Buck-Boost operation
which has wide input/output capability is available. And
also, control functions with Ref input are implemented.
Its high voltage capability allows direct connection to
rectified AC supply.
Open protection for Buck-Boost operation and variable
OCP improve safeness.
◆Applications
 LED Lighting equipment
 LED Light bulb
◆Package
Package: SOP8
◆Main Specification
MOSFET
250V (MIN), 2.2Ω (MAX)
Output Current
0.5A (MAX)
Main Supply Voltage 250V (MAX)
◆Features
 Buck-Boost operation
In addition to normal Buck operation, Buck-Boost
operation which can both Step-up and down is also
available, to operate in wide input/output condition.
 Open protection for Buck-Boost operation
Protection circuit to prevent damage when load open
failure in Buck-Boost operation.
 Built-in reference voltage for current setting
Precision and easy current setting.
 Sleep function
Latch off the output by Ref pin input voltage.
 Disable function
Shut off LED current by Ref pin input voltage.
 SOP8 Package
Output MOSFET and controller are included in
one package.
 High voltage supply input
 Built-in constant current controller
- PWM mode current control circuitry.
- Adjustable output current by input voltage to Ref pin.
 External PWM Dimming
 Variable type over current protection (OCP)
- Latch type operation
- OCP threshold is adjusted by setting current and
temperature to ensure protection.
 Under voltage lockout protection (UVLO)
 Thermal Shutdown protection (TSD)
FUSE
AC
Input
Line
Filter
Typical application circuit
V_in
C_in
Reg ^VBB
D₁
V_LED
R₁
C₁
LC5222
OUT
Ref
L₁
R₂ C₂
PWM _GND Sen
C_PWM
R_S
SANKEN ELECTRIC CO.,LTD.
http://www.sanken-ele.co.jp
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