这个电路中每个角爪上的 字母

Pin Symbol Function Description
1 SC 1.2A switch collector
2 SE Darlington switch emitter
3 TC Oscillator timing capacitor
4 GND Power GND
5 FB Feedback comparator inverting input
6 VCC VCC - Power supply input
7 IPK IPK -High-side current sense input, VIPK=300mV
8 DRI Drive collecto