KA3844B 参数 Datasheet PDF下载

KA3842B/KA3843B/KA3844B/KA3845B

Figure 2. Under Voltage Lockout

During Under-Voltage Lock-Out, the output driver is biased to a high impedance state. Pin 6 should be shunted to ground

with a bleeder resistor to prevent activating the power switch with output leakage current.

Figure 3. Error Amp Configuration

Figure 4. Current Sense Circuit

Peak current (I

S

) is determined by the formula:

1.0V

I

S

(

MAX

)

= -----------

-

R

S

A small RC filter may be required to suppress switch transients.

5