SANKEN LC5222D

LED Lighting IC
LC5222D
13 October 2011
◆Description
◆Package
LC5222D 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
Package: DIP8
◆Main Specification
 LED Lighting equipment
 LED Light bulb
MOSFET
Output Current
Main Supply Voltage
250V (MIN), 2.2Ω (MAX)
0.5A (MAX)
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.
 DIP8 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)
Typical application circuit
Vin
FUSE
AC
Input
Reg
R1
C2
D1
VLED
LC5222
C1
Ref
PWM
R2
VBB
OUT
GND
CPWM
SANKEN ELECTRIC CO.,LTD.
http://www.sanken-ele.co.jp
1/8
L1
Sen
RS
LED
Cin
Line
Filter
LED Lighting IC
LC5222D
13 October 2011
1 Scope
The present specifications shall apply to a LED driver IC for LED lighting, LC5222D.
2 Outline
Type
Structure
Applications
Hybrid Integrated Circuit
Plastic Molded (Transfer Mold)
LED Lighting
3 Absolute Maximum Ratings (Ta=25℃)
Parameter
Terminal
Symbol
Ratings
Units
Main Power Supply Voltage
6−8
VBB
250
V
Output Breakdown Voltage
5−4
Vo
250
V
Output Current
5−4
IO
PWM Pin Voltage
2−8
VPWM
0.5
※1
A
−0.3~VZ※2
V
※2
V
-0.3~VZ
Remarks
Exclude Pulse Width<1µs
Ref Pin Voltage
3−8
VRef
Sen Pin Voltage
4−8
VSen
-0.3~4.0
V
Exclude Pulse Width<1µs
Allowable Power Dissipation
―
PD
1.73※3
W
Mounted on PWB ※4
Junction Temperature
―
Tj
150
℃
Operating Temperature Range
―
Ta
−40~105
℃
Tstg
―
−40~150
℃
Output current rating may be limited by duty cycle, ambient temperature, and heat sinking.
Under any set of conditions, do not exceed the specified junction temperature (Tj).
VZ here is breakdown voltage of zener diode which is internally connected to between pins
and GND. (VZ=6.3V typ.) Maximum input current is 1mA.
Allowable Power Dissipation depends on PWB pattern layout.
Mounted on Sanken evaluation board.
Storage Temperature Range
※1
※2
※3
※4
SANKEN ELECTRIC CO.,LTD.
2/8
LED Lighting IC
LC5222D
13 October 2011
4 Electrical Characteristic (Ta=25°C, VBB=140V, Unless Otherwise Noted.)
Ratings
Units
Remarks
1.5
mA
At disable
2.5
4.0
mA
At enable
250
―
―
V
ID=1mA
RDS(on)
―
1.2
2.2
Ω
ID=0.5A
4−5
VF
―
0.8
1.0
V
IF=0.5A
UVLO Threshold (Turn On)
6−8
VUVLO(on)
―
14
―
V
UVLO Threshold (Turn Off)
6−8
VUVLO(off)
―
12
―
V
Reg Output Voltage
1−8
VReg
9.6
10
10.4
V
IReg=0mA
Reg Output Current
1−8
IReg
―
―
−2
mA
VReg=9V
Enable Voltage
3−8
VENB
―
0.15
0.19
V
Sleep Voltage
3−8
VSLP
2.85
3.0
―
V
Ref Pin Input Current
3−8
IRef
―
4-8
VSen
10
0.4VRef
+0.03
0.83
µA
Current Control Detection Voltage
−10
0.4VRef
−0.03
0.77
Parameter
Terminal
Symbol
6−8
MIN
TYP
MAX
IBBs
―
1
6−8
IBB
―
Output MOSFET Breakdown Voltage
5−4
V(BR)DSS
Output MOSFET On Resistance
5−4
Body Diode Forward Voltage
Power Supply Current
OCP Detection Voltage
4−8
VOCP
0.4VRef
―
0.8
0.4VRef
+0.7
1.5
―
V
VRef=0.2~2.0V
V
V Ref =2.0~3.0V
―
V
VRef=0.2~2.0V
―
V
V Ref =2.0~3.0V
Sen Pin Input Current
4−8
ISen
−10
―
10
µA
PWM Pin Low Voltage
2−8
VPWML
―
2
―
V
PWM Pin High Voltage
2−8
VPWMH
―
3
―
V
PWM Pin Output Current
2−8
IPWM
―
−20
―
µA
PWM Blanking Time
―
tBLKP
―
0.3
―
µs
OCP Blanking Time
―
tBLKO
―
0.2
―
µs
PWM Frequency
2−8
fPWM
―
―
200
PWM Off Time
―
tOff
―
17
Rise Time
5−4
tr
―
Fall Time
5−4
tf
Thermal Shutdown Threshold
―
TTSD
※5
kHz
Duty=50%
―
µs
CPWM=100pF
25
―
ns
Io=0.4A
―
50
―
ns
Io=0.4A
―
150
―
°C
TTSDhys
55
―
―
―
※5 Operation at a PWM frequency greater than fPWM is possible but not warranted.
°C
Temperature
of Control IC
Thermal Shutdown Hysteresis
SANKEN ELECTRIC CO.,LTD.
3/8
LED Lighting IC
LC5222D
13 October 2011
Thermal Data
150
Temperature Rise ΔT[℃]
125
100
75
50
25
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
Total Power Dissipation PD[W]
Power Dissipation versus Ambient Temperature
Allowable Package Power Dissipation
PD[W]
2
PD=1.73W
1.5
1
0.5
0
0
25
50
75
100
125
150
Ambient Temperature Ta[℃]
SANKEN ELECTRIC CO.,LTD.
4/8
LED Lighting IC
LC5222D
13 October 2011
5 Functional Block Diagram (Pin assignment)
VBB
Control IC
Reg
TSD
BandGap
Reference
PWM
PWM_In
CC
Ref
CC_Ref
Reference
Control
Block
OCP_Ref
Current
Detect
Block
OC
Sen_In
OP
PWM
Control
Block
OCP
Blanking
Regulator
UVLO
UVLO
TSD
PWM
OCP
OPP
SLEEP
ENABLE
Logic
Block
Out
OPP
Logic
Gate Driver
Sen
GND
Pin Assignment
Number
Name
Function
1
Reg
Output of 10V Internal Regulator
2
PWM
PWM Control
3
Ref
Setting Output Current and Operation
4
Sen
Current Sensing
5
OUT
Output (Power MOSFET Drain)
6
VBB
Power Supply
7
-
Pin Removed
8
GND
Ground
SANKEN ELECTRIC CO.,LTD.
5/8
LED Lighting IC
LC5222D
13 October 2011
6 Package
6.1 Package Drawing and Material
 DIP8 Package
LC5222
SK
D
Dimensions in mm
Terminal material: Cu
Terminal treatment:
Solder plating (Pb-free)
Marking
Position
Contents
Indication
①
The last digit of the year
0 to 9
②
The Month
1 to 9,O,N,D
③
The week
1 to 3
Sanken Registration
Number
alphanumeric characters
④
⑤
⑥
⑦
6.2 Appearance
The body shall be clean and shall not bear any stain, rust or flaw.
6.3 Marking
The type number and lot number shall be clearly marked by laser so that cannot be erased easily.
SANKEN ELECTRIC CO.,LTD.
6/8
LED Lighting IC
LC5222D
13 October 2011
7 Cautions and warnings
Since reliability can be affected adversely by improper storage environment and handling methods during
Characteristic tests, please observe the following cautions.
7.1 Cautions for Storage
 Ensure that storage conditions comply with the standard temperature (5 to 35℃) and the standard relative
humidity (around 40 to 75%) and avoid storage locations that experience extreme changes in temperature or
humidity.
 Avoid locations where dust or harmful gases are present and avoid direct sunlight.
 Reinspect for rust in leads and solderability that have been stored for a long time.
7.2 Cautions for characteristic Tests and Handling
 When characteristic tests are carried out during inspection testing and other standard tests periods, protect
the devices from surge of power from the testing device, shorts between the devices and the heatsink.
7.3 Considerations to protect the Products from Electrostatic Discharge
 When handling the devices, operator must be grounded. Grounded wrist straps be worn and should have at




least 1MΩ of resistance near operators to ground to prevent shock hazard.
Workbenches where the devices are handled should be grounded and be provided with conductive table and
floor mats.
When using measuring equipment such as a curve tracer, the equipment should also be grounded.
When soldering the devices, the head of a soldering iron or a solder bath must be grounded in other to
prevent leak voltage generated by them from being applied to the devices.
The devices should always be stored and transported in our shipping containers or conductive containers, or
be wrapped up in aluminum foil.
SANKEN ELECTRIC CO.,LTD.
7/8
LED Lighting IC
LC5222D
13 October 2011
7.4 Others
 The contents in this document are subject to changes, for improvement and other purposes, without notice. Make
sure that this is the latest revision of the document before use.
 Application and operation examples described in this document are quoted for the sole purpose of reference for the
use of the products herein and Sanken can assume no responsibility for any infringement of industrial property rights,
intellectual property rights or any other rights of Sanken or any third party which may result from its use.
 Although Sanken undertakes to enhance the quality and reliability of its products, the occurrence of failure and
defect of semiconductor products at a certain rate is inevitable. Users of Sanken products are requested to take, at
their own risk, preventative measures including safety design of the equipment or systems against any possible
injury, death, fires or damages to the society due to device failure or malfunction.
 Sanken products listed in this document are designed and intended for the use as components in general purpose
electronic equipment or apparatus (home appliances, office equipment, telecommunication equipment, measuring
equipment, etc.).
When considering the use of Sanken products in the applications where higher reliability is required (transportation
equipment and its control systems, traffic signal control systems or equipment, fire/crime alarm systems, various
safety devices, etc.), and whenever long life expectancy is required even in general purpose electronic equipment or
apparatus, please contact your nearest Sanken sales representative to discuss, prior to the use of the products herein.
The use of Sanken products without the written consent of Sanken in the applications where extremely high
reliability is required (aerospace equipment, nuclear power control systems, life support systems, etc.) is strictly
prohibited.
 In the case that you use our semiconductor devices or design your products by using our semiconductor devices, the
reliability largely depends on the degree of derating to be made to the rated values. Derating may be interpreted as a
case that an operation range is set by derating the load from each rated value or surge voltage or noise is considered
for derating in order to assure or improve the reliability. In general, derating factors include electric stresses such as
electric voltage, electric current, electric power etc., environmental stresses such as ambient temperature, humidity
etc. and thermal stress caused due to self-heating of semiconductor devices. For these stresses, instantaneous values,
maximum values and minimum values must be taken into consideration.
In addition, it should be noted that since power devices or IC’s including power devices have large self-heating value,
the degree of derating of junction temperature (Tj) affects the reliability significantly.
 When using the products specified herein by either (i) combining other products or materials therewith or (ii)
physically, chemically or otherwise processing or treating the products, please duly consider all possible risks that
may result from all such uses in advance and proceed therewith at your own responsibility.
 Anti radioactive ray design is not considered for the products listed herein.
 Sanken assumes no responsibility for any troubles, such as dropping products caused during transportation out of
Sanken’s distribution network.
 The contents in this document must not be transcribed or copied without Sanken’s written consent.
SANKEN ELECTRIC CO.,LTD.
8/8