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LP3971 bảng dữ liệu(PDF) 8 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
tên linh kiện LP3971
Giải thích chi tiết về linh kiện  POWER MANAGEMENT UNIT FOR ADVANCED APPLICATION PROCESSORS
PDF  42 Pages
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nhà sản xuất  NSC [National Semiconductor (TI)]
Trang chủ  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP3971 bảng dữ liệu(HTML) 8 Page - National Semiconductor (TI)

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LDO RTC
Unless otherwise noted, V
IN = 3.6V, CIN = 1.0 µF, COUT = 0.47 µF, COUT (VRTC) = 1.0 µF ceramic. Typical values and limits
appearing in normal type apply for T
J = 25˚C. Limits appearing in boldface type apply over the entire junction temperature
range for operation, −40˚C to +125˚C. (Notes 2, 6, 7) and (Note 10)
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
Accuracy
Output Voltage Accuracy
V
IN Connected, Load Current =
1mA
2.632
2.8
2.968
V
∆V
OUT
Line Regulation
V
IN =(VOUT nom + 1.0V) to 5.5V
(Note 11) Load Current=1mA
0.15
%/V
Load Regulation
From Main Battery
Load Current=1mAto30mA
0.05
%/mA
From Backup Battery
V
IN = 3.0V
Load Current=1mAto10mA
0.5
I
SC
Short Circuit Current Limit
From Main Battery
V
IN =VOUT +0.3V to 5.5V
100
mA
From Backup Battery
30
V
IN -
V
OUT
Dropout Voltage
Load Current = 10 mA
375
mV
I
Q_Max
Maximum Quiescent Current
I
OUT =0mA
30
µA
TP1
RTC LDO Input Switched from
Main Battery to Backup Battery
V
IN Falling
2.9
V
TP2
RTC LDO Input Switched from
Backup Battery to Main Battery
V
IN Rising
3.0
V
C
O
Output Capacitor
Capacitance for Stability
0.7
1.0
µF
ESR
5
500
m
Ω
www.national.com
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