XRP7708_12 Datasheet, PDF(9/28 Page) Exar Corporation – Quad Channel Digital PWM Step Down Controllers

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XRP7708_12 Datasheet, PDF (9/28 Pages) Exar Corporation – Quad Channel Digital PWM Step Down Controllers

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XRP7708 and XRP7740

Quad Channel Digital PWM Step Down Controllers

Fig. 10: Sequential Start-up Configuration

CH1:3.3V CH2:5V CH3:1V CH4:1.8V

Fig. 11: Sequential Soft-Stop Configuration

CH1:5V CH2:3.3V CH3:1.8V CH4:1.2V

Vout Shutdown = 0.8V, 3A load

Fig. 12: Startup into 3V prebias â 5V Output

CH1: Vout(5V)

Fig. 13: Sequential Soft-Stop Configuration

Vout Shutdown = 0.8V, No Load

CH1:3.3V CH2:5V CH3:1V CH4:1.8V

Fig. 14: Load Transient Response

CH1:Iout (1A/div) CH2: Vout (3.3V)

9/28

Rev. 1.2.2

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