TS19701A Datasheet, PDF (1/9 Pages) Taiwan Semiconductor Company, Ltd – CC/CV Primary-Side PWM Controller Power on Soft-start

TS19701A
CC/CV Primary-Side PWM Controller
SOT-26
Pin Definition:
1. GND
2. Gate
3. Current Sense
4. INV
5. Compensation
6. VDD
Description
TS19701A is a high performance offline PWM Power switch for low power AC/DC charger and adapter
applications. It operates in primary-side sensing and regulation. Consequently, opto-coupler and TS431 could be
eliminated. Proprietary Constant Voltage (CV) and Constant Current (CC) control is integrated as shown in the
figure below. In CC control, the current and output power setting can be adjusted externally by the sense resistor
Rs at CS pin. In CV control, multi-mode operations are utilized to achieve high performance and high efficiency. In
addition, good load regulation is achieved by the built-in cable drop compensation. Device operates in PFM in CC
mode as well at large load condition and it operates in PWM with frequency reduction at light/medium load.
TS19701A offers power on soft start control and protection coverage with auto-recovery features including Cycle-
by- Cycle current limiting, VDD OVP, VDD clamp and UVLO. Excellent EMI performance is achieved with Power-
Source proprietary frequency shuffling technique. High precision constant voltage (CV) and constant current (CC)
can be achieved by TS19701A
Features
● ±5% Constant Voltage Regulation at Universal AC
input
● Primary-side Sensing and Regulation
● Programmable CV and CC Regulation
● Adjustable Constant Current and Output Power
Setting
● Built-in Adaptive Current Peak Regulation
● Built-in Primary winding inductance compensation
● Programmable Cable drop Compensation
● Power on Soft-start
● Built-in Leading Edge Blanking (LEB)
● Cycle-by-Cycle Current Limiting
● VDD Under Voltage Lockout with Hysteresis
Application
● LED lighting
● Cell phone charger
Ordering Information
Part No.
Package Packing
TS19701ACX6 RFG SOT-26 3Kpcs / 7” Reel
Note: “G” denote for Halogen Free Product
Absolute Maximum Rating (Ta = 25^oC unless otherwise noted)
Characteristics
Symbol
Drain Voltage (off state)
V_DRAIN
VDD Voltage
V_DD
VDD Zener Clamp Continuous Current
--
COMP Voltage
V_COMP
CS Input Voltage
V_CS
INV Input Voltage
V_INV
Max Operating Junction Temperature
TJ
Min/Max Storage Temperature
Thermal Resistance from Junction to case
T_STG
θ_JC
Thermal Resistance from Junction to ambient
θ_JA
Rating
-0.3 to Bvdss
-0.3 to VDD_Clamp
10
-0.3 to 7
-0.3 to 7
-0.3 to 7
150
-55 to 150
180
250
Unit
V
V
mA
V
V
V
°C
°C
°C/W
°C/W
1/9
Version: A12