R5973AD datasheet(32/38 Pages) STMICROELECTRONICS

Datenblatt-Suchmaschine für elektronische Bauteile

R5973AD Datenblatt(PDF) 32 Page - STMicroelectronics

Teilenummer	R5973AD

Bauteilbeschribung	Up to 1.5 A step-down switching regulator for aerospace applications

PDF	38 Pages

Scroll/Zoom	100%

Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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32 / 38 page

Application information

R5973AD

32/38

DocID027027 Rev 1

Figure 21 shows an example of a compensation network stabilizing the system with ceramic

capacitors at the output (the optimum component value depends on the application).

Figure 21. MLCC compensation network example

8.9

External SOFT_START network

At the start-up 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 Figure 22. The capacitor C is charged

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 22. Soft-start network example

R5973AD

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