Description
The TB9911 is a current mode control LED driver IC designed to control single switch PWM converters (buck, boost, buck-boost, or SEPIC), in a constant frequency or constant off-time mode.
Features
- ※Switch mode controller for single switch drivers ○Buck ○Boost ○Buck-boost ○SEPIC
※Works with high side current sensing ※Closed loop control of output current ※High PWM dimming ratio ※Internal 250V linear regulator (can be extended
using external zener diodes) ※Internal 2% Voltage Reference (0°C < TA <
85°C) ※Constant frequency or constant off-time
operation ※Programmable slope compensation ※Enable & PWM dimming ※+0.2A/-0.4A gate drive ※Output short circuit protection ※Output over voltage protec.
TB9911-Top-Best.pdf