TS19340CS14 Taiwan Semiconductor Secondary-Side Constant Current and Constant Voltage Controller with PWM / Linear Dimming DESCRIPTION FEATURES The TS19340CS14 provides an integrated solution ● Secondary-side CC and CV Control using built in switch mode constant current (CC) and ● High accuracy internal voltage reference constant voltage (CV) regulation smart LED lighting ● Build in PWM & Linear dimming functions applications. The built in PWM and linear dimming ● LED current cut-off function functions allows the designer to replace many ● ● Built-in 3.3V reference for dimming Power Compliant to RoHS Directive 2011/65/EU and in Accordance to WEEE 2002/96/EC. Halogen-free according to IEC 61249-2-21 external discrete components used for dimming schemes. The PWM frequency is configurable from ● 100Hz-10kHz through selection of the compensation capacitor. The linear dimming cut off voltage is APPLICATION configurable using a resistor divider at the CCO pin ● LED lighting ● Intelligent lighting management SOP-14 Pin Definition: 1. VD 14. VCC 2. CCH 13. FB 3. CCL 12. VSEN 4. CCO 11. PHO 5. PWM 10. N/C 6. N/C 9. SWO 7. GND 8. COM Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020 TYPICAL APPLICATION CIRCUIT Figure 1: PWM Dimming Application Circuit Figure 2: Linear Dimming Application Circuit 1 Version: A1605 TS19340CS14 Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified) (Note 1) PARAMETER SYMBOL LIMIT UNIT Power Supply Pin VCC 40 V PHO Voltage to GND VPHO -0.3 to 40 V SWO Voltage to GND VSWO -0.3 to 40 V FB Voltage to GND VFB -0.3 to 5.5 V VSEN Voltage to GND VVSEN -0.3 to 5.5 V COM Voltage to GND VCOM -0.3 to 5.5 V CCH Voltage to GND VCCH -0.3 to 5.5 V CCL Voltage to GND VCCL -0.3 to 5.5 V CCO Voltage to GND VCCO -0.3 to 5.5 V PWM Voltage to GND VPWMB -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 sec) TLEAD 260 °C PD 0.833 W HBM 2 kV SYMBOL LIMIT UNIT RθJA 120 °C/W Power Dissipation @ TA=25 °C ESD Rating (Human Body Mode) (Note 2) THERMAL PERFORMANCE (Note 3) PARAMETER Thermal Resistance Junction to Ambient RECOMMENDED OPERATING CONDITION (TA = 25°C unless otherwise specified) (Note 4) PARAMETER SYMBOL LIMIT UNIT Power Supply Pin VCC 38 V PHO Voltage to GND VPHO -0.3 to 38 V SWO Voltage to GND VSWO -0.3 to 38 V FB Voltage to GND VFB -0.3 to 5 V VSEN Voltage to GND VVSEN -0.3 to 5 V COM Voltage to GND VCOM -0.3 to 5 V CCH Voltage to GND VCCH -0.3 to 5 V CCL Voltage to GND VCCL -0.3 to 5 V CCO Voltage to GND VCCO -0.3 to 5 V PWM Voltage to GND VPWM -0.3 to 5 V Operating Junction Temperature Range TJ -40 to +125 °C Operating Ambient Temperature Range TOPA -40 to +85 °C 2 Version: A1605 TS19340CS14 Taiwan Semiconductor ELECTRICAL SPECIFICATIONS (TA = 25°C unless otherwise specified) PARAMETER SYMBOL CONDITION MIN TYP MAX UNIT Supply Voltage Turn-on Voltage VCC_ON 11.2 12.0 12.8 V Turn-off Voltage VCC_OFF 7.1 7.6 8.1 V Quiescent Current IQ VCC=10V -- 22 -- μA Operation Supply Current ICC VCC=20V -- 400 -- μA VDREF IO=5mA 3.2 3.3 3.4 V 3.3V Voltage reference VCC Over Voltage Protection VCC_OVP -- 35 -- V CCH Over Voltage Protection VCCH_OVP -- 4.2 -- V Voltage reference1 CVH 2.4 2.53 2.66 V Voltage reference2 CVL 1.15 1.21 1.27 V Voltage reference3 CCV 196 200 204 mV GM Amplifier Driver Dropout Voltage (PHO) VOLPHO IO = 20mA -- 0.55 -- V Dropout Voltage (SWO) VOLSWO IO = 20mA -- 0.48 -- V Note: 1. Stresses listed as the above “Absolute Maximum Ratings” may cause permanent damage to the device. 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 affect device reliability. 2. Devices are ESD sensitive. Handing precaution recommended. 3. Thermal Resistance is specified with the component mounted on a test board with low effective thermal conductivity in free air at TA=25°C. 4. The device is not guaranteed to function outside its operating conditions. ORDERING INFORMATION PART NO. PACKAGE PACKING TS19340CS14 RLG SOP-14 2,500pcs / 13”Reel 3 Version: A1605 TS19340CS14 Taiwan Semiconductor FUNCTION BLOCK VCC Bias BG LDO VD VSEN CCV (200mV) CCH CCL SWO Dim CCO PWM PHO FB GND CVV (2.5/1.2) COM PIN DESCRIPTION PIN NO. NAME FUNCTION 1 VD 2 CCH Constant current high limit voltage 3 CCL Constant current low limit voltage 4 CCO LED current cut-off voltage 5 PWM PWM input pin 6 N/C No connection 7 GND Ground 8 COM PWM pulse filter pin 9 SWO Open drain output of the comparator for LED current cut-off function 10 N/C 11 PHO Open drain output of the two internal operational amplifier for photo coupler 12 VSEN Current sense pin 13 FB Voltage sense pin 14 VCC Power supply pin 3.3V low drop out voltage No connection 4 Version: A1605 TS19340CS14 Taiwan Semiconductor CHARACTERISTICS CURVES Figure 1 - VDREF vs. Junction Temperature Figure 2 - CVH vs. Junction Temperature Figure 3 - CCV vs. Junction Temperature Figure 4 – CCH=1.6V vs. Junction Temperature 5 Version: A1605 TS19340CS14 Taiwan Semiconductor APPLICATION INFORMATION Function Description The TS19340 is a secondary-side CC/CV shunt regulator for LED lighting dimming application. It has a built-in 3.3V low drop-out voltage (3.3VD) for external dimming control. The LED current setting level for PWM and linear functions can be adjusted by the CCH (maximum), CCL (minimum), and CCO (cut-off) pins. When LED current is cut-off, the IC will change the CV reference voltage (2.53V Figure 3: LED Current Ratio vs. PWM Duty Ratio 1.21V) and the SWO will be pulled low. Figure 4: LED Current Ratio vs. Linear Dimming Voltage Pin Detail Pin 1: VD The IC has built-in 3.3V LDO for setting the dimming function and external MCU. Pin 2 : CCH The CCH pin is for the constant current high limit function. The pin function is shown in Figure 2 and Figure 3. The functional working voltage range is from 3.2V to 0V. The pin connects to 5Vref or high voltage level when the function is not used. The LED high limit current is shown as follows: ILED(High Limit) = VCCH (A) 16 × RS Pin 3: CCL The CCL pin is for the constant current low limit function. The pin function is shown in Figure 2 and Figure 3. The functional working voltage range is from 3.2V to 0V. The pin connects to ground when the function is not used. The LED low limit current is shown as follows: ILED(Low Limit) = VCCL ( A) 16 × RS Pin 4: CCO (PWM / Linear) The CCO pin is for the LED current cut-off function. The pin function is shown in Figure 2 and Figure 3. The functional working voltage range is from 3.2V to 0V. The pin pulls to ground when the function is not used. The LED cut-off current is shown as a formula following: ILED(Cut Off) = VCCO ( A) 16 × RS 6 Version: A1605 TS19340CS14 Taiwan Semiconductor APPLICATION INFORMATION (CONTINUE) Pin Detail Pin 5: PWM The pin is for PWM dimming function control. The pin should be connected to 5Vref when using linear dimming function. The LED current vs. PWM duty ratio is shown as a formula following: 0.2 ILED(PWM) = PWM _ Duty _ Ratio × ( A) RS Pin 6 : N/C No connection. Pin 7: GND GND is the reference node of internal circuit. Pin 8: COM The COM pin is for PWM pulse filter. The PWM duty ratio will be converted to 3.2V (Duty=100%) ~ 0V (Duty=0%). A suitable capacitor should be connected between the COM and ground. Pin 9: SWO The pin is an open drain output of the comparator for LED current cut-off function. The SWO pin will be pulled low when the LED current is cut-off. Pin 10: N/C No connection. Pin 11: PHO The PHO pin is for transferring secondary-side voltage/current signal for the primary-side controller. It is an open drain output of the two internal OP-AMPs for an external photo coupler. A capacitor and a resistor in series should be connected between PHO and FB for constant voltage control, and a capacitor and a resistor in series should be connected between PHO and VSEN for constant current control. Pin 12: VSEN The VSEN pin is for LED constant current control. The VSEN reference voltage will be adjusted by the PWM/CCH/CCL setting. The illustration is shown in Figure 2a and Figure 2b. The maximum LED Current is in the formula as follows: ILED(max) = 0.2 (A) RS Pin 13: FB The FB pin is for LED constant voltage control. The FB reference voltage will be 2.53V when the LED current is not cut-off, and it will be 1.21V when the LED current is cut-off Pin 14: VCC Power supply for the controller during normal operation. The controller will start up when VCC reaches 12V (typical) and will shut-down when VCC voltage is below 7.6V (typical). A decoupling capacitor should be connected between the VCC and GND pin as close as possible. 7 Version: A1605 TS19340CS14 Taiwan Semiconductor PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters) SOP-14 SUGGESTED PAD LAYOUT (Unit: Millimeters) MARKING DIAGRAM Y M L = Year Code = Month Code for Halogen Free Product O =Jan P =Feb Q =Mar R =Apr S =May T =Jun U =Jul V =Aug W =Sep X =Oct Y =Nov Z =Dec = Lot Code (1~9, A~Z) 8 Version: A1605 TS19340CS14 Taiwan Semiconductor 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. 9 Version: A1605