ZLDO330 Просмотр технического описания (PDF) - Zetex => Diodes

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производитель

ZLDO330

3.3 VOLT ULTRA LOW DROPOUT REGULATOR

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ZLDO330

5). Logic Controlled Power Supply

Fig.4 shows all that is necessary to allow a

microprocessor to control a power supply

based on the ZLDO330. The Shutdown Control

pin (pin 2), is a logic compatible input that

disables the regulator when a voltage in

excess of 1.5V is applied. The current required

to drive this input is less than 10uA. When the

regulator is shutdown in this way, the

quiescent current of the ZLDO330 falls to

around 11µA. This makes the regulator

suitable for a wide range of battery powered

applications where intermittent operation

occurs. The shutdown control pin should not

be taken to a voltage higher than Vin if low

quiescent supply current is important. The

shutdown control is a high impedance input

and so if not required, should be wired to the

ground pin (pin 7).

+ 5V

to 20V

Vin Vout

IC1 Gnd

ZSR330

Microproc.

System

Supply Input

IC2

ZLDO330

LBF Spg

SC Gnd

Vin D/C

N/C Vout

C3

100nF

0V

Figure 4

APPLICATIONS

C1

10pF

+ 3.3V

C2 Switched

1uF Output

0V

4-69

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