Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UPSL103
Preliminary
LINEAR INTEGRATED CIRCUIT
HIGH POWER FACTOR &
ACCURACY CONSTANT
CURRENT LED DRIVER

DESCRIPTION
The UTC UPSL103 is a highly-integrated, low startup current,
average current mode, one cycle control PFC and fixed switching
frequency PWM controller. These functions enable the LED driver to
easily meet the accuracy average LED current and high power factor
requirements.
The UTC UPSL103 also features a 45kHz fixed frequency
oscillator, an internal 200mV precision reference, and a PWM
comparator with latching logic. The accurate output LED current is
achieved by an averaging current feedback loop and the LED current
dimming can be easily controlled via the DIM pin. The UTC UPSL103
also has multiple features to protect the controller from fault
conditions, including Under Voltage Lockout (UVLO), Over Current
Protection (OCP) and Over Voltage Protection (OVP). Additionally, to
ensure the system reliability, the UTC UPSL103 is built with the
thermal protection function.
The UTC UPSL103 improves the performance and reduces the
cost of the LED driver.

FEATURES
* High power factor by one cycle control
* Accuracy and programmable constant current
* Low BOM cost
* Dimmable LED current by DIM
* Average current / fixed frequency control
* Gate output voltage clamp
* LED Open Protection
* LED Short Protection
* Over Current Protection
* Built-in thermal protection

ORDERING INFORMATION
Ordering Number
UPSL103G-AG6-R
www.unisonic.com.tw
Copyright © 2015 Unisonic Technologies Co., Ltd
Package
SOT-26
Packing
Tape Reel
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QW-R125-035.a
UPSL103

Preliminary
LINEAR INTEGRATED CIRCUIT
MARKING
6 5
4
L103G
1
2
3

PIN CONFIGURATION

PIN DESCRIPTION
PIN NO.
1
2
3
4
5
6
PIN NAME
VCC
GND
OUT
DIM
COMP
CS
DESCRIPTION
Power supply pin of the chip.
Ground pin of the chip.
Gate driver for external MOSFET switch
Dimming control pin by input a DC voltage
PWM loop compensation node
Current sense pin, Connect to sense the MOSFET current
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www.unisonic.com.tw
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QW-R125-035.a
UPSL103

Preliminary
LINEAR INTEGRATED CIRCUIT
BLOCK DIAGRAM
VCC
15V
LDO
UVLO
VREF
8V
28V
COMP
OVP
OTP
0.8V
OCP
R
CS Control
R
PWM
DRV
OUT
S
OSC
CS
Q
R1
EA
GND
0.2V
3V
DIM
0.3V
DIM
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UPSL103

Preliminary
LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
Supply Voltage
VCC
30
V
DIM, COMP, CS
-0.3~7
V
OUT
15
V
Power Dissipation (at Ambient Temperature =85°C)
PD
250
mW
ESD Voltage Protection, Human Body Model
2
KV
ESD Voltage Protection, Machine Model
200
V
Junction Temperature
TJ
150
°C
Operating Ambient Temperature
TOPR
-20~85
°C
Storage Temperature
TSTG
-65~150
°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.

ELECTRICAL CHARACTERISTICS (VCC=15.0V & TA=+25°C, unless otherwise specified.)
PARAMETER
Startup Current
Operating Current
Operating Current
UVLO(off)
UVLO(on)
OVP Level on VCC Pin
OVP De-Bounce Time
Feedback Reference Voltage
Tran-Conductance
Output Sink Current
Output Source Current
Input Over Voltage Protection
Open Loop Voltage, CS Pin Open
Leading-Edge Blanking Time
Delay to Output
Switching Frequency
Maximum Duty
Frequency Jitter Range
Temp. Stability
Voltage Stability
Rising Time
Falling Time
VGATE-Clamp
Saturation Threshold Voltage
Linear Dimming Range
LED Current off Threshold Voltage
Current Source
OTP Trip Point
OTP Release Point
OTP Threshold Level
OTP De-Bounce Time
SYMBOL
TEST CONDITIONS
IST
VCC=UVLO on - 1V
with 1nF load on OUT pin,
ICC
VCOMP=2.5V
with 1nF load on OUT pin,
IQC
Protection Tripped (OCP, OVP,
SCP, OTP)
VMIN
VST
VOVP
VFB
7
14
26.5
0.196
ISINK
ISOURCE
VOCP
VCS
TLEB
TDelay
FOSC
DMAX
0.7
42
90
TYP
4
MAX
15
UNIT
μA
2
3
mA
1.2
1.5
mA
8
15
28
40
0.200
120
12
12
0.80
5
410
100
45
9
16
29.5
V
V
V
μs
V
μS
μA
μA
V
V
nS
nS
KHz
%
%
%
%
nS
nS
V
V
V
V
μA
°C
°C
°C
μS
0.204
0.9
220
48
+/-4
TR
TF
VClamp
-40°C~ 125°C
VCC=11V ~ 25V
Load Capacitance=1000pF
Load Capacitance=1000pF
VCC=25V
160
80
13.5
3.0
0.3
270
TSD
TST
△T
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
MIN
300
150
130
20
80
6
1
320
160
15
3.0
0.5
330
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UPSL103

Preliminary
LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
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.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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