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PDF TS19702 Data sheet ( Hoja de datos )
| Número de pieza | TS19702 | |
| Descripción | High Power Factor Corrector LED Driver | |
| Fabricantes | Taiwan Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de TS19702 (archivo pdf) en la parte inferior de esta página. Total 9 Páginas | ||
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TS19702
High Power Factor Corrector LED Driver
SOT-26
Pin Definition:
1. VCC
2. Ground
3. Output
4. Dimming
5. Compensation
6. Current Sense
Description
The TS19702 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 integrated functions also include the LED short
protection, open protection, and internal over temperature protection. The COMP pin controls the duty by
connected an RC compensation network to ground and forming the closed loop feedback control. To protect the
external power MOSFET from being damaged by supply over voltage, the TS19702 Output pin voltage is
clamped to about 15V.
Features
Application
● High Power Factor by One Cycle Control
● Accuracy Constant Current
● Low BOM Cost
● Linear Dimming on DIM Pin
● Average Current / Fixed Frequency Control
● Gate Output Voltage Clamp
● LED Open Protection (OVP)
● LED Short Protection (SCP)
● Over Current Protection (OCP)
● Internal OTP Protection
● 300mA Driving Capability for Output Pin
● E27, T5, T8 LED lighting
● LED Lighting Applications
Ordering Information
Part No.
Package
Packing
TS19702CX6 RFG SOT-26 3Kpcs / 7” Reel
Note: “G” denote for Halogen Free Product
Absolute Maximum Rating (Ta = 25oC unless otherwise noted)
Parameter
Symbol
Supply Voltage
Compensation Voltage
VCC
VCOMP
Dimming Pin
VDIM
Current Sense Pin
VCS
Output Pin
VOUT
Power Dissipation @ TA=85ºC
PD
Operating Ambient Temperature
TOPR
Junction Temperature
TJ
Storage Temperature Range
Thermal Resistance - Junction to Ambient
TSTG
RӨJA
ESD Voltage Protection
HBM
MM
Limit
30
-0.3 ~ 7
-0.3 ~ 7
-0.3 ~ 7
15
250
-20 ~ +85
+150
-65 ~ +150
250
2
200
Unit
V
V
V
V
V
mW
oC
oC
oC
oC/W
KV
V
1/9 Version: A12
1 page  
TS19702
High Power Factor Corrector LED Driver
Application Information (Continue)
OCP (Over Current Protection)
The TS19702 has an over current protection function on CS pin. An internal circuit detects the current level, when
the current is larger than a threshold level, the gate output will keep on low level. Then VCC decreases below
UVLO off level, the controller resets again.
OVP (Over Voltage Protection) on VCC
To prevent the LED driver from being damaged, the TS19702 is implemented an OVP function on VCC. When the
VCC voltage is higher than the OVP threshold voltage 28V, the output gate driver circuit will be shut down
immediately to stop the switching of power MOSFET. The VCC pin OVP function is an auto recovery type
protection (latch off type optional). If the OVP condition happens, the pulses will be stopped and never recovery
unless the VCC pin voltage is down to the UVLO off level. The TS19702 is working in an auto-recovery mode as
shown in below figure
Gate Clamp/Soft Driving
Driver is clamped to 15V by an internal clamping circuit. Those damages usually come from undesired over-voltage
gate signals. Under the conditions listed below, the gate output will turn off immediately to protect the power circuit.
The TS19702 also has soft driving function to minimize EMI.
Over Temperature Protection/Dimming Function
The typical application for DIM pin is shown in above Fig. The NTC thermistor is setting as an external OTP
protection. In the DIM pin, there is one comparator for latch-off mode protection. While the voltage on this pin is
lower than 0.3V, the TS19702 will shut down. When the voltage is in the range of 0.3 to 3.0V, the TS19702 is
operating on the linear dimming range. While the voltage is higher than 3.0V, the TS19702 is operating on the
normal status. It also could let this Pin open when the function is not required for the user.
5/9 Version: A12
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet TS19702.PDF ] | |
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