1997 Aug 14

11

Philips Semiconductors

Preliminary specification

Multiple voltage regulator with switch

TDA3608Q

Notes

2. The quiescent current is measured in the standby mode. So, the enable inputs of regulators 1, 3 and the switch are

4. The rise and fall time is measured with a 10 k

Ω pull-up resistor and a 50 pF load capacitor.

5. The delay time depends on the value of the capacitor:

8. The foldback current protection limits the dissipated power at short-circuit (see Fig.4).

9. The peak current of 300 mA can only be applied for short periods (t < 100 ms).

10. The drop-out voltage measured between BU and REG2.

12. The maximum output current of the power switch is limited to 1.8 A when the supply voltage exceeds 18 V.

at least 10 ms (see Fig.5).

t

d

C

I

ch

------

V

C (th)

×

C

750

3

×10

() ms

()

×

==