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LM9073 Fiches technique(PDF) 4 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM9073
Description  Dual High Current Low-Dropout System Regulator
Download  18 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM9073 Fiches technique(HTML) 4 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
The following specifications apply for 6V
≤ v
IN ≤ 19V, tCASE = 25˚C unless otherwise specified. COUT ≥ 6µF with 0.3Ω≤ ESR
≤ 0.3Ω on each regulator output.
Symbol
Parameter
Conditions
LM9073
Units
Min
Max
Input Current
IN
ON
Additional Input Current with
both Regulators ON
V
IN ≥ 8V, ILTOTAL =IMAIN +
I
LEXT
I
LTOTAL = 700mA + 100mA =
800mA
1.2
X
I
LTOTAL
LIN
DO
Additional Input Current when in
Dropout
0V < V
IN < 8V, (Note 4)
I
LTOTAL =IMAIN +ILEXT
I
LTOTAL = 700mA + 100mA =
800mA
1.5
X
I
LTOTAL
Reset Output
V
THRL
Low Switching Threshold
V
MAIN output controls Reset
Reset Adjust (pin 11 )open
circuited
4.0
4.2
V
Reset Adjust (pin 11) shorted to
ground
4.5
4.7
V
V
THRH
High Switching Threshold
V
MAIN output controls Reset
5.35
5.75
V
V
LOW
Logic Low Output Threshold
1V
≤ V
MAIN ≤ VTHRL
R
RESET = 50kΩ to VMAIN
0.4
V
V
HIGH
Logic High Output Threshold
Normal opeation,
V
THRL≤ VMAIN THRH,, I SOURCE
=0
V
MAIN
−50mV
V
MAIN
V
R
P−U
Internal Pull-Up Resistance
2.4
6.0
k
T
DELAY
Reset Delay Interval
C
DELAY = 0.1µF
35
70
mS
T
RISE
Output Rise Time
From 10% V
MAIN to 90% VMAIN
C
LRESET = 50pF
1.5
µS
T
FALL
Output Fall Time
From 90% V
MAIN to 10% VMAIN
C
LRESET = 50pF
0.5
µS
Watchdog
V
TRIGL
Trigger Input Logic Low Voltage
.08
V
V
TRIGR
Trigger Input Logic High Level
2
V
T
WD
Watchdog Refresh Window
C
WATCHDOG = 0.1µF (low
leakage)
I
WATCHDOG for charging the
watchdog
35
70
mS
T
PW
Watchdog Trigger Pulse Width
10
µS
R
TRIG
Trigger Input Pull-down
Resistance
540
k
Control Inputs
V
ON
ON Threshold for ON/OFF Input
Rseries = 22k
3.5
4.5
V
V
OFF
OFF Threshold for ON/OFF
Inpu
Rseries = 22k
Ω (Note 3)
1.5
2.5
V
I
ON/OFF
ON/OFF Input Current
1.4V
≤ V
ON/OFF ≤ 4.5V
1
12
µA
−0.3V
≤ V
ON/OFF ≤ 7V(Note 6)
−1
5
mA
ON
K−A
Turn ON Threshold for Keep
Alive Input
2V
OFF
K−A
Turn OFF Threshold for Keep
Alive Input
(Note 3)
0.8
V
R
P−D
Pull−Down Resistance at Keep
Alive Input
0V
≤ V
K−A ≤ 5V
5
40
k
www.national.com
4


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