|
宝贝分类
AC-DC
UC/KA3842
UC/KA3843
KA7500B
TL494
RM6203
OB2263
OB2268
OB2269
OB2535
OB2536
OB2538
OB2539
OB2353
OB2354
OB2356
OB2357
OB2358
OB2359
SG3524
SG3525
SG3526
CR6842
UC/KA3845
他们还在看
¥0.43
UC3845 DIP8 HYC 1906F 热销排行
|
FEATURES Low Start Up Current Maximum Duty Clamp UVLO With Hysteresis Operating Frequency Up To 500KHZ DESCRIPTION The KA3842B/KA3843B/KA3844B/KA3845B are fixed frequency current-mode PWM controller.They are specially designed for Off-Line and DC-to-DC converter applications with minimum external components.These integrated circuits feature a trimmed oscillator for precise duty cycle control,a temperature compensated reference,high gain error amplifier.Current sensing comparator,and a high current totempole output ideally suited for driving a power MOSFET. Protection circuity Includes built in under-voltage lockout and current limiting.The KA3842B and KA3844B have UVLO thresholds of 16V (on) and 10V (off).The KA3843B and KA3845B are 8.5V (on) and 7.9V (off).TheKA3842B and KA3843B can operate within 100% duty cycle.The KA3844B and KA3845B can operate with 50% duty cycle. Absolute Maximum Ratings
|
