AN1330 datasheet(22/31 Pages) STMICROELECTRONICS

Datenblatt-Suchmaschine für elektronische Bauteile

AN1330 Datenblatt(PDF) 22 Page - STMicroelectronics

Teilenummer	AN1330

Bauteilbeschribung	Designing with the L5970D 1A high efficiency DC-DC converter

PDF	31 Pages

Scroll/Zoom	100%

Hersteller	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

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22 / 31 page

Application information

AN1330

22/31

Figure 14.

Short-circuit current (VIN = 25 V)

Figure 15.

Short-circuit current (VIN = 30 V)

In Figure 14 and Figure 15, for example, it can be observed that when the input voltage

increases for a given component list, the current peak increases also. The current limit is

immediately triggered but the current peak increases until the current ripple during the TOFF

is equal to the current ripple during the TON.

5.5

Application circuit

Figure 16 shows the demonstration board application circuit for the device in the SMD

version, where the input supply voltage, VCC, can range from 4.4 V to 25 V due to the rated

voltage of the input capacitor and the output voltage is adjustable from 1.235 V to VCC.

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