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LP3996SDX-1525 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LP3996SDX-1525
Description  Dual Linear Regulator with 300mA and 150mA Outputs and Power-On-Reset
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LP3996SDX-1525 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Electrical Characteristics(Notes 2, 8) (Continued)
Unless otherwise noted, V
EN = 950mV, VIN =VOUT + 1.0V, or 2.0V, whichever is higher, where VOUT is the higher of VOUT1
and V
OUT2.CIN = 1 µF, IOUT = 1 mA, COUT1 =COUT2 = 1.0µF. Typical values and limits appearing in normal type apply for TA
= 25˚C. Limits appearing in boldface type apply over the full junction temperature range for operation, −40 to +125˚C.
Symbol
Parameter
Conditions
Typ
Limit
Units
Min
Max
PSRR
Power Supply Rejection Ratio
(Note 11)
f = 1kHz, I
OUT
= 1mA to
150mA
C
BYP = 10nF
LDO1
58
dB
LDO2
70
f = 20kHz, I
OUT
= 1mA to
150mA
C
BYP = 10nF
LDO1
45
LDO2
60
e
n
Output noise Voltage (Note 11)
BW = 10Hz to
100kHz
C
BYP = 10nF
V
OUT = 0.8V
36
µV
RMS
V
OUT = 3.3V
75
T
SHUTDOWN
Thermal Shutdown
Temperature
160
˚C
Hysteresis
20
Enable Control Characteristics
I
EN
Input Current at V
EN1 or VEN2
V
EN = 0.0V
0.005
0.1
µA
V
EN =6V
2
5
V
IL
Low Input Threshold at V
EN1 or
V
EN2
0.4
V
V
IH
High Input Threshold at V
EN1 or
V
EN2
0.95
V
POR Output Characteristics
V
TH
Low Threshold % 0f V
OUT2 (NOM)
Flag ON
88
%
High Threshold % 0f V
OUT2
(NOM)
Flag OFF
96
I
POR
Leakage Current
Flag OFF, V
POR = 6.5V
30
nA
V
OL
Flag Output Low Voltage
I
SINK = 250µA
20
mV
Timing Characteristics
T
ON
Turn On Time (Note 11)
To 95% Level
C
BYP = 10nF
300
µs
Transient
Response
Line Transient Response |
δV
OUT|
(Note 11)
T
rise =Tfall = 10µs
δV
IN = 1VCBYP = 10nF
20
mV
(pk - pk)
Load Transient Response
|
δV
OUT|
(Note 11)
T
rise =Tfall =
1µs
LDO 1
I
OUT = 1mA to
150mA
175
LDO 2
I
OUT = 1mA to
300mA
150
SET Input Characteristics
I
SET
SET Pin Current Source
V
SET = 0V
1.3
µA
V
TH(SET)
SET Pin Threshold Voltage
POR = High
1.25
V
www.national.com
6


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