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pic

AT89S51-24PI

厂商:
类别:
8051单片机
包装:
08+
封装:
DIP
无铅情况/ROHS:
-
描述:
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  • 参数
  • 描述
参数 数值

特点
Wide Input Range: 5.5V to 60V
3A Peak Switch Current over All Duty Cycles
Constant 200kHz Switching Frequency 200kHz(LT3430) 100kHz(LT3430-1)
0.1 Ω Switch Resistance
Current Mode
Effective Supply Current: 2.5mA
Shutdown Current: 30μA
1.2V Feedback Reference Voltage
Easily Synchronizable
Cycle-by-Cycle Current Limiting
Small, 16-Pin Thermally Enhanced TSSOP Package

典型应用

典型应用

描述
Special design techniques and a new high voltage process achieve high efficiency over a wide input range. Efficiency is maintained over a wide output current range by using the output to bias the circuity and by utilizing a supply boost capacitor to saturate the power switch. Patented circuity* maintains peak switch current over the full duty cycle range. A shutdown pin reduces supply current to 30μA and a SYNC pin can be externally synchronized with a logic level input from 228kHz to 700kHz for the LT3430 or from 125kHz to 250kHz for the LT3430-1.
The LT3430/LT3430-1 are available in a thermally enhanced 16-pin TSSOP package.

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