ZHCSHC1B January 2018 – January 2020 TPS92612-Q1
PRODUCTION DATA.
- 1 特性
- 2 应用
- 3 说明
- 4 修订历史记录
- 5 Pin Configuration and Functions
- 6 Specifications
- 7 Detailed Description
- 8 Application and Implementation
- 9 Power Supply Recommendations
- 10Layout
- 11器件和文档支持
- 12机械、封装和可订购信息
8.2.1.2 Detailed Design Procedure
Current setting by the sense resistor is as described in Equation 1.
Equation 2. 
LED-string maximum forward voltage = 3 × 2.5 V = 7.5 V.
Total device power consumption at worst case is with 16-V input and LEDs at minimal forward voltage.
Equation 3. 
TI recommends to add capacitors C1 and C2 at SUPPLY and OUT. TI recommends C1 of 1 μF and 100 nF close to the SUPPLY pin, and C2 of 10 nF close to the OUT pin. A larger capacitor for C1 or C2 is helpful for EMC and ESD; however, it takes a longer time to charge up the capacitor and could affect PWM dimming performance.