Datasheet

TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
SOT-26
Pin Definition:
1. COM
2. GND
3. CS
4. OUT
5. VCC
6. DMG
Description
TS19310 is a buck/boost control IC with phase angle decoding circuit and hold current adjusting function for
TRIAC dimming LED lighting. TS19310 achieves high power factor and low total harmonic distortion (THD)
operation by boundary conduction mode (BCM). The line and load regulation of LED current is about ±3%, based
on particular control method.
Features
Applications
●
●
●
●
● LED Lighting

Down Light

Tube Lamp

PAR Lamp

Bulb
●
●
●
●
●
●
●
●
Built-in Phase Angle Decoding
TRIAC Hold Current Management Technique
PSR and Buck/Boost Control
Universal Input Voltage Range
TS19310ACX6: 90 VAC ~ 135 VAC
TS19310BCX6: 180 VAC ~ 264 VAC
Active Power Factor Correction Technique
Constant Output Current Control LED Driver
Open-LED Protection on DMG Pin
Over-Voltage Protection on VCC Pin
Short-LED Protection
Cycle by Cycle Over-Current Protection on CS Pin
Over-Temperature Protection
Gate Driving Voltage Clamping
Ordering Information
Part No.
Package
Packing
TS19310ACX6 RFG
SOT-26
3kpcs/7” Reel
TS19310BCX6 RFG
SOT-26
3kpcs/7” Reel
Note: “G” denotes for Halogen- and Antimony-free as those which
contain <900ppm bromine, <900ppm chlorine (<1500ppm total
Br + Cl) and <1000ppm antimony compounds
Absolute Maximum Ratings (Note 1)
Parameter
Symbol
Range
Unit
Power Supply Pin
VCC
40
V
DMG Voltage to GND
VDMG
-0.3 to 40
V
OUT Voltage to GND
VOUT
-0.3 to 40
V
CS Voltage to GND
VCS
-0.3 to 5.5
V
VCOM
-0.3 to 5.5
V
Junction Temperature Range
TJ
-40 to +150
°C
Storage Temperature Range
TSTG
-65 to +150
°C
Lead Temperature (soldering 10 s)
TLEAD
260
°C
PD
0.3
W
HBM
2
kV
COM Voltage to GND
Power Dissipation @ TA=25°C
ESD Rating (Human Body Mode)
(Note 2)
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Thermal Information
Parameter
Symbol
Range
Unit
RθJA
220
°C/W
RθJC
106.6
°C/W
Symbol
Conditions
Unit
Power Supply Pin
VCC
34.5
V
DMG Voltage to GND
VDMG
-0.3 to 11.2
V
OUT Voltage to GND
VOUT
-0.3 to 19
V
CS Voltage to GND
VCS
-0.3 to 5
V
VCOM
-0.3 to 5
V
Operating Junction Temperature Range
TJ
-40 to +125
°C
Operating Ambient Temperature Range
TOPA
-40 to +85
°C
Thermal Resistance Junction to Ambient
(Note 3)
Thermal Resistance Junction to Case
Recommended Operating Conditions (Note 4)
Parameter
COM Voltage to GND
Electrical Characteristics (TA= 25°C, unless otherwise specified.)
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Turn-on Voltage
VCC_ON
17
18
19
V
Turn-off Voltage
VCC_OFF
8.5
9.5
10
V
Quiescent Current 1
IQ1
VCC=17V, at VCC off
--
30
50
μA
Quiescent Current 2
IQ2
Start up at 4.5 kHz
--
600
800
μA
Operation Supply Current
ICC
--
2.5
3.0
mA
VCC Voltage Protection
VOVPA
31
32
34
V
Output Voltage Protection
VOVPS
10
10.5
11
V
CS Limit Voltage
VOCP
1.15
1.25
1.35
V
VO_STR
--
3
--
V
tSTR
--
222
--
μs
gm
--
60
--
μS
ICOMP_SOU
--
20
--
μA
Protection
Short Circuit Protection
(Note 5)
Oscillator
Start-up Timer
GM Amplifier
Transconductance
Source Current
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Electrical Characteristics (TA= 25°C, unless otherwise specified.)
Parameter
Symbol
Condition
Min
Typ
Max
Unit
Driver
VOH
VCC=33V, IO = 10mA
--
1.2
1.5
V
VOL
VCC=33V, IO = -10mA
--
0.12
--
V
Rise Time
tRISE
VCC=20V, CO =1nF
--
40
--
ns
Fall Time
tFALL
VCC=20V, CO =1nF
--
80
--
ns
VO_CLAMP
--
--
19
V
tLEB
--
500
--
ns
OTP Trip Point
--
150
--
°C
OTP Release Point
--
115
--
°C
OTP Threshold Hysteresis
--
35
--
°C
Dropout Voltage
Output Clamp Voltage
Leading Edge Blanking Time
Over Temperature Protection
(Note 6)
Notes:
1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. These
are for stress ratings. Functional operation of the device at these or any other conditions beyond those
indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating
conditions for extended periods may remain possibility to affect device reliability.
2. Devices are ESD sensitive. Handling precaution recommended.
3. Thermal Resistance is specified with the component mounted on a low effective thermal conductivity test board
in free air at TA=25°C.
4. The device is not guaranteed to function outside its operating conditions.
5. Guaranteed by design.
6. Auto recovery type.
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Function Block
CLR
COM
RST
CT
R
SR
Latch Q
CLK
Driver
OUT
S
VCC
BG
VREF
PRO
SCP, OCP
OVPA (VCC)
OVPS (OUT)
X
OSC
One
shot
CLK
SET_str
SET_act
TDIS
DMG
DMG
Multiply
GM
Phase
Angle
Decode
VREF
GND
CSP
S/H
CS
Block Diagram
Pin Description
Pin No.
Name
1
2
3
4
5
6
COM
GND
CS
OUT
VCC
DMG
Function
Output pin of error amplifier.
Ground return for all internal circuitry.
Input current sense pin.
Power MOSFET output pin.
Power supply pin for all internal circuitry.
Zero current demagnetization sensing.
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Typical Application Circuit
Application Information
Function Description
The TS19310 is boundary conduction mode (BCM) operation with constant on time based regulator design to
achieve high power factor performance. The TS19310 has built-in functions of phase dimmable, and included
protection function related VCC over-voltage protection, open-LED protection, short-LED protection, overtemperature protection, primary side current limit, and gate clamp is within. The TS19310 is the sense switch
current from CS voltage multiplier by test data input signal (TDIS) to get the output current information by system
close loop feedback.
The average output current can express by below formula.
IOUT 
NP 0.333* 

NS
2  RS
Where:
● IOUT is the average output current
● NP is the primary-side turn ratio
● NS is the secondary-side turn ratio
● 0.333 is the reference potential setting of IC
● 2 is the reference potential setting of IC
● η is the efficiency
● RS is the sensing resistor connected between the MOSFET source and the GND
Pin Detail
Pin 1: Compensation
This is the output of the gm amplifier. Connect with a suitable RC network to ground.
Pin 2: Ground
GND is the reference node of internal circuit.
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Pin 3: Current Sense
MOSFET current signal sensing for multiply, phase angle decode and current limit setting function.
1.25
ICS(Limit) 
RS
Where:

ICS is the input current sense

IC internal CS Pin 1.25V Over voltage level

RS is the sensing resistor connected between the MOSFET source and GND
Pin 4: Output
Gate drive for external MOSFET switch and has built-in gate clamp function.
Pin 5: VCC
Power supply for the controller during normal operation. The controller will start up when VCC reaches 18V (typical)
and will shut-down when VCC voltage is below 9.5V (typical). A decoupling capacitor should be connected
between the VCC and GND pin as close as possible.
The TS19310 performs VCC over voltage protection though VCC pin. Once VCC pin exceeds 32V, TS19310 turns
off and latches the MOSFET until VCC goes below VCC_OFF.
Pin 6: DMG
The Output voltage is reflected by the auxiliary winding (NA) voltage of Flyback transformer, the DMG pin can
sense output information to depart from start up voltage (VO_STR) and protection voltage (VO_OVP).
When DMG sense voltage under VO_STR, the circuit will work on short circuit protection, f STR=1/tSTR.
When DMG sense voltage over VO_OVP, the circuit will work on over voltage protection, it will latch out off until VCC
goes below VCC_OFF.
VCC
NA
VDMG_OVP 
RDMG1
DMG
RDMG2
OVP Protection (by DMG)
NS
RDGM1  RDGM2
× VOVPS ×
NA
RDMG2
OVP Protection (by VCC)
CDMG
VVCC _ OVP 
NS
× VOVPA
NA
Short Circuit Protection
VO _ Short 
NS
RDMG1  RDMG2
× VO _ STR ×
NA
RDMG2
Where:
● VDMG_OVP is the output-over-voltage protection point
● VOVPS is the over voltage protection signal
● VO_STR is the start-up timer
● NA is the number of auxiliary-winding turns
● NS is the number of secondary-winding turns
6/8
Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
SOT-26 Mechanical Drawing
Unit: Millimeters
Marking Diagram
SM
SN
L
Y
W
= TS19310CXA Device Code
= TS19310CXB Device Code
= Lot Code A~Z
= Year Code
(D=2014, E=2015, F=2016, G=2017, H=2018, J=2019, K=2020)
= Week Code
A~Z = wk1~wk26
A~Z = wk27~wk52
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Version: A14
TS19310A/B
Single-Stage PFC
TRIAC Dimmable LED Driver
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to
any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of
sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty,
relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify TSC for any damages resulting from such improper use or sale.
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Version: A14