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参数资料
| 型号： | PJ3843BCS |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | PLASTIC, SOP-8 |
| 文件页数： | 13/15页 |
| 文件大小： | 887K |
| 代理商： | PJ3843BCS |
PJ3842B / PJ3843B
High Performance Current Mode Controller
7-15
2002.ver.A
FIGURE 17-REPRESENTATIVE BLOCK DIAGRAM
Pin numbers adjacent to terminals are for the 8 pin dual-in-line package.
Pin numbers in parenthesis are for the SOP-14 package.
FIGURE 18-TIMING DIAGRAM
Two
undervoltage
lockout
comparators
have
been
incorporated to guarantee that the IC is fully functional before
the output stage is enabled. The positive power supply
terminal (VCC) and the reference output (Vref) are each
monitored by separate comparators.Each has built-in
hysteresis to prevent erratic output behavior as their
respective thresholds are crossed. The large hysteresis and
low start-up current of the PJ3842B makes it ideally suited in
off-line converter applications where efficient bootstrap start-
up technique (Figure 33). 36 V zener is connected as a shunt
regulator from VCC to ground.Its purpose is to protect the IC
from excessive voltage that can occur during system start-up.
The minimum operating voltage for the PJ3842B is 11V.
UNDERVOLTAGE LOCKOUT
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| PJ3842BCD | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
| PJ3842BCS | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDSO8 |
| PJ3843BCD | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
| PJ3845BCD | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP8 |
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相关代理商/技术参数 |
参数描述 |
|---|---|
| PJ3844 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Performance Current Mode Controller |
| PJ3844B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Performance Current Mode Controller |
| PJ3844BCD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Performance Current Mode Controller |
| PJ3844BCS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Performance Current Mode Controller |
| PJ3845 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:High Performance Current Mode Controller |
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