a5975d STMicroelectronics, a5975d Datasheet - Page 43

• Manufacturer Part Number: a5975d
• Description: Up To 3 A Step-down Switching Regulator For Automotive Applications
• Manufacturer: STMicroelectronics

A5975D
8.12
External soft-start network
At startup, the device can quickly increase the current up to the current limit in order to
charge the output capacitor. If soft ramp-up of the output voltage is required, an external
soft-start network can be implemented, as shown in
up to an external reference through R and the BJT clamps the COMP pin.
This clamps the duty cycle, limiting the slew rate of the output voltage.
Figure 32. Soft-start network example
Doc ID 018760 Rev 1
Figure
32. The capacitor C is charged
Application information
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