Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UPSSL150
Preliminary
LINEAR INTEGRATED CIRCUIT
NON ISOLATED BUCK
CONSTANT CURRENT LED
DRIVER IC

DESCRIPTION
UPSSL150 is a high precision LED BUCK constant current
driver chip. The chip operates in the inductor current critical
continuous mode, which is suitable for the non isolated buck LED
constant current power supply with 85Vac~265Vac full range input
voltage.
UPSSL150 chip integrated 500V power switch by patent
demagnetization detection technology and high voltage power
supply technology, without detection and power supply for auxiliary
winding, the peripheral devices are more simple, saving the cost
and volume of the system.
UPSSL150 chip with high precision current sampling circuit,
while the use of patented constant current control technology to
achieve high accuracy of the LED constant current output and
excellent line voltage regulator. The chip operates in the critical
mode of inductor current and the output current is not changed with
the increase of the inductance and the working voltage of LED.
UPSSL150 has a variety of protection features, including LED
short circuit protection, under voltage protection, over temperature
adjustment function and so on.

FEATURES
* The integrated 500V power mos.
* The integrated high voltage power supply function.
* The inductor current critical continuous mode.
* Without auxiliary winding detection and power supply.
* The wide voltage input voltage.
* ±5% LED output current accuracy.
* The LED short circuit and open circuit protection.
* The chip power supply under voltage protection.
* The regulating function of overheating
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UPSSL150

Preliminary
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UPSSL150AG-AE2-R
UPSSL150AG-S08-R
UPSSL150AL-T92-B
UPSSL150AG-T92-B
UPSSL150AL-T92-K
UPSSL150AG-T92-K
UPSSL150BG-BE2-R
UPSSL150BG-S08-R
UPSSL150BL-T92-B
UPSSL150BG-T92-B
UPSSL150BL-T92-K
UPSSL150BG-T92-K
UPSSL150CG-CE2-R
UPSSL150CG-S08-R
UPSSL150CL-T92-C
UPSSL150CG-T92-C
UPSSL150CL-T92-K
UPSSL150CG-T92-K

LINEAR INTEGRATED CIRCUIT
Package
Packing
SOT-23-3
SOP-8
TO-92
TO-92
SOT-23-3
SOP-8
TO-92
TO-92
SOT-23-3
SOP-8
TO-92
TO-92
Tape Reel
Tape Reel
Tape Box
Bulk
Tape Reel
Tape Reel
Tape Box
Bulk
Tape Reel
Tape Reel
Tape Box
Bulk
MARKING
SOT-23-3
SOP-8
TO-92
3
L150X
2
ILED, RON
1
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
Preliminary
PIN CONFIGURATION
CS
CS 1
8 DRAIN
CS 2
7 NC
CS 3
6 NC
CS 4
5 VDD
3
2
1
DRAIN
VDD
SOT-23-3

SOP-8
3
DRAIN
2
CS
1
VDD
TO-92
PIN DESCRIPTION
SOT-23-3
1
2
3
-

LINEAR INTEGRATED CIRCUIT
PIN NO.
SOP-8
5
1, 2, 3, 4
8
6, 7
TO-92
1
2
3
-
PIN NAME
VDD
CS
DRAIN
NC
DESCRIPTION
Power Supply
Float Ground and Current Sampling Pin
The Internal High-Voltage Drain
BLOCK DIAGRAM
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
Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING (TA=25°C, Unless otherwise specified)
PARAMETER
SYMBOL
VIN
RATINGS
UNIT
-0.3 ~ 550
V
VDD
-0.3 ~ 8.5
V
SOT-23-3
300
mW
Power Dissipation
PD
SOP-8
800
mW
TO-92
625
mW
Junction Temperature
TJ
-45 ~ +125
°C
TSTG
Storage Temperature
-55 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
Input Voltage
Supply Voltage

RECOMMENDED OPERATION CONDITIONS
PARAMETER
Input Voltage
Supply Voltage
Reference Load Current
Ambient Temperature

SYMBOL
VIN
VDD
ILOAD
TA
RATINGS
140 ~ 375
7~8
0 ~ 200
0 ~ +70
UNIT
V
V
mA
°C
RATING
416
156
200
UNIT
°C/W
°C/W
°C/W
THERMAL RESISTANCES CHARACTERISTICS
PARAMETER
Junction to Ambient
SYMBOL
SOT-23-3
SOP-8
TO-92
θJA
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Preliminary
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS (TA=25°C, Unless otherwise specified)
PARAMETER
POWER SUPPLY SECTION
Input Voltage
Chip Operating Voltage
Chip Starting Voltage
Chip Starting Current
Chip Operating Current
Power Efficiency
Power Factor
CC SECTION
The Precision of Constant Current
Standby Power Consumption
PROTECTION SECTION
Short Circuit Protection
Frequency
Current Detection Threshold
Edge Blanking Time
Turn Off Delay Time
TIME CONTROL SECTION
Minimum Turn Off Time
Maximum Turn off Time
Maximum Turn-on Time
POWER MOS SECTION
LDMOS Withstand Voltage
Conduction Resistance
SYMBOL
VIN
VDD
VDD_ON
IST
ICC
η
PF
CC
FST
TEST CONDITIONS
DRAIN=100V
VDD rise
VDD=6.2V
ILED=100mA
ILED=100mA
MIN
TYP
MAX
UNIT
85
7
6
0.5
120
0.88
0.4
220
7.3
6.2
1
180
265
7.8
6.5
2
300
V
V
V
mA
uA
0.5
0.7
ILED=0mA~200mA
±5
VIN=220AC
RCS=3Ω
0.3
%
W
2
3
4
KHz
580
620
TOFF_DELAY
600
500
200
mV
ns
ns
TOFF_MIN
TOFF_MAX
TON_MAX
2.5
300
40
VCS_TH
TLEB
BV
RON
500
IDS=0.1A
UPSSL150A
UPSSL150B
UPSSL150C
550
30
18
12
us
us
us
600
V
Ω
Ω
Ω
TEMPER SECTION
Over Temper Adjust
140
°C
Over Temper Protect
160
°C
Over Temper Hysteresis
20
°C
Notes: 1. The parameters are not 100% tested in production.
2. The minimum, maximum range of standard specification by the test to ensure, typical values by design,
test or analysis to ensure.
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Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
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Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT (Cont.)
BOM
Reference
R1
R2
C1
C2
CIN
D1 ~ D4
D5
L0
U1
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Component
750K, 1206
3Ω, 1206
2.2nF / 1KV, 1206
2.2nF / 50V, 0805
6.8μF, 400V
1N4007
ES1J, SMA
4.7mH
UPSSL150
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Preliminary
LINEAR INTEGRATED CIRCUIT
APPLICATION INFORMATION
UPSSL150 is a constant current driver IC for LED lighting, which is applied to the non isolated LED driver power
supply.
The 500V power switch is integrated in the chip, which is based on the constant current architecture and control
method, and it can achieve excellent constant current characteristics with minimal external components.
And without auxiliary winding power supply and testing, the system cost is very low.
Start
After the system is powered up, the input voltage is charged on the VDD pin through the jfet, and when the VDD
voltage reaches the threshold value, the chip's internal reference circuit begins to work. When the chip is working
normally, the required operating current is still through the supply of internal consumption.
Constant current control
The chip is detected the peak current, and the RCS resistance is connected to the input terminal of the peak
comparator, which is compared with the threshold voltage 0.6V. When the RCS voltage reaches the threshold, the
LED current is adjusted, and realized the constant current control.
The formula for calculating the inductor peak current is IPK=600/RCS (mA).
Among them, RCS is a current sampling resistor.
The output of the comparator CS also includes a 500ns leading edge blanking time.
The formula for calculating the LED average current is ILED=IPK/2.
Among them, IPK is the inductor peak current.
Protection function
UPSSL150 built in a variety of protection functions, including LED short-circuit protection, LED open circuit
protection, sampling circuit short-circuit protection, temperature regulation and protection, etc.
When LED short circuit, the system works in the 3 KHz low frequency, so the power consumption is very low.
Over temperature adjustment function
UPSSL150 has the function of over temperature adjustment, the output current is gradually reduced when the
driving power is over, so that the output power and temperature rise is controlled, the power supply is maintained at
the set value,
In order to improve the reliability of the system, the chip is internally set to adjust the temperature of the 140°C.
PCB design
In the design of PCB, you need to follow the following guidelines:
VDD bypass capacitor is required to close the VDD pin of the chip.
RCS resistor requires close to the CS pin of the chip
Between RCS and VDD bypass capacitor resistor connected to the copper foil as short as possible
CS pin increases in the area of copper clad to improve chip cooling.
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UPSSL150

Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL CHARACTERISTICS
2.2nF
L
750K
ES1J
6.8μF
4.7mH
N
U1
DRAIN
CS
VDD
3
2
1
2.2nF

3Ω
TEST CIRCUIT
Table 1. Efficiency and power factor test
VI
85V
115V
132V
180V
230V
264V
pF
--0.552
----0.496
---
VO (V)
61
61
60.4
117
116
116
IO (A)
0.0962
0.1031
0.102
0.1026
0.1008
0.1006
Pi (W)
6.6
7.04
6.92
12.9
12.65
12.64
η
88.91%
89.33%
89.03%
93.06%
92.43%
92.32%
Table 2. Line Regulation & Load Regulation test
VLED
VIN
180VAC
230VAC
264VAC
Line Regulation%
60V
80V
120V
Load Regulation%
0.1042
0.1043
0.1045
±0.15%
0.104
0.1038
0.1038
±0.1%
0.1042
0.1021
0.1017
±1.25%
±0.1%
±1.1%
±1.4%
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
Preliminary
LINEAR INTEGRATED CIRCUIT
TEST CIRCUIT (Cont.)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
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