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LP3972 数据表(PDF) 11 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
部件名 LP3972
功能描述  Power Management Unit for Advanced Application Processors
PDF  59 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

LP3972 数据表(HTML) 11 Page - National Semiconductor (TI)

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LDO1to5
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, 10, 11, 15) and (Note 16).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
V
OUT
Accuracy
Output Voltage Accuracy (Default
V
OUT)
Load Current=1mA
−3
3
%
∆V
OUT
Line Regulation
V
IN =3.1V to 5.0V, (Note 11) Load
Current=1mA
0.15
%/V
Load Regulation
V
IN = 3.6V,
Load Current=1mAtoI
MAX
0.011
%/mA
I
SC
Short Circuit Current Limit
LDO1–4, V
OUT = 0V
400
mA
LDO5, V
OUT = 0V
500
V
IN -
V
OUT
Dropout Voltage
Load Current = 50 mA (Note 7)
150
mV
PSRR
Power Supply Ripple Rejection
f = 10 kHz, Load Current = I
MAX
45
dB
I
Q
Quiescent Current “On”
I
OUT =0mA
40
µA
Quiescent Current “On”
I
OUT =IMAX
60
Quiescent Current “Off”
EN is de-asserted
0.03
T
ON
Turn On Time
Start up from Shut-down
300
µsec
C
OUT
Output Capacitor
Capacitance for Stability
0˚C
≤ T
J
≤ 125˚C
0.33
0.47
µF
−40˚C
≤ T
J
≤ 125˚C
0.68
1.0
ESR
5
500
m
Ω
LDO dropout voltage vs. Load Current collect data for all LDO’s
Dropout Voltage vs. Load Current
Change in Output Voltage vs. Load Current
20207629
20207630
www.national.com
11



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