參數(shù)資料
型號(hào): ZLDO270T8
英文描述: Obsolete
中文描述: 過(guò)時(shí)
文件頁(yè)數(shù): 8/9頁(yè)
文件大?。?/td> 82K
代理商: ZLDO270T8
ZLDO270
5). Logic Controlled Power Supply
Fig.4 shows all that is necessary to allow a
microprocessor to control a power supply based
on the ZLDO270. 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 10
μ
A. When the regulator is
shutdown in this way, the quiescent current of
the ZLDO270 falls to around 11
μ
A. 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).
APPLICATIONS
Spg
D/C
Vout
LBF
SC
Vin
N/C
Gnd
IC2
ZLDO270
C2
1μF
C1
10pF
C3
100nF
0V
+2.70V
Microproc.
System
Switched
Output
Supply Input
Vin Vout
Gnd
IC1
ZSR330
0V
to 20V
+5.0V
Figure 4
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