lm9073 National Semiconductor Corporation, lm9073 Datasheet - Page 4

• Manufacturer Part Number: lm9073
• Description: Dual High Current Low-dropout System Regulator
• Manufacturer: National Semiconductor Corporation

www.national.com
Symbol
LIN
Reset Output
V
V
V
V
R
T
T
T
Watchdog
V
V
T
T
R
Control Inputs
V
V
I
ON
OFF
R
Electrical Characteristics
ON/OFF
Note 1: “Absolute Maximum Ratings” indicate limits beyond which damage to the device may occur. “Operating Ratings” indicate conditions for which the device
is functional, but do not guarantee specific performance limits. “Electrical Characteristics” state DC and AC electrical specifications under particular test conditions
which guarantee specific performance limits. This assumes that the device is within the Operating Ratings. Specifications are not guaranteed for parameters where
no limit is given, however, the typical value is a good indication of device performance.
Note 2: Human body model, 150 pFcapacitor discharged through a 1.5 kΩ resistor.
Note 3: If either control input is left open circuited the regulators will turn OFF.
DELAY
RISE
FALL
WD
PW
The following specifications apply for 6V ≤ v
3.0Ω on each regulator output.
THRL
THRH
LOW
HIGH
TRIGL
TRIGR
ON
OFF
P−U
TRIG
P−D
K−A
DO
K−A
Additional Input Current when in
Dropout
Low Switching Threshold
High Switching Threshold
Logic Low Output Threshold
Logic High Output Threshold
Internal Pull-Up Resistance
Reset Delay Interval
Output Rise Time
Output Fall Time
Trigger Input Logic Low Voltage
Trigger Input Logic High Level
Watchdog Refresh Window
Watchdog Trigger Pulse Width
Trigger Input Pull-down
Resistance
ON Threshold for ON/OFF Input
OFF Threshold for ON/OFF Inpu
ON/OFF Input Current
Turn ON Threshold for Keep
Alive Input
Turn OFF Threshold for Keep
Alive Input
Pull−Down Resistance at Keep
Alive Input
Parameter
(Continued)
IN
≤ 19V, t
0V
I
I
800mA
V
Reset Adjust (pin 11 )open
circuited
Reset Adjust (pin 11) shorted to
ground
V
1V ≤ V
R
Normal opeation,
V
= 0
C
From 10% V
C
From 90% V
C
C
leakage)
I
watchdog
Rseries = 22kΩ
Rseries = 22kΩ (Note 3)
1.4V ≤ V
−0.3V ≤ V
(Note 3)
0V ≤ V
LTOTAL
LTOTAL
WATCHDOG
MAIN
MAIN
THRL
RESET
DELAY
LRESET
LRESET
WATCHDOG
CASE
<
V
≤ V
output controls Reset
output controls Reset
MAIN
K−A
IN
= I
= 700mA + 100mA =
= 0.1µF
= 50kΩ to V
ON/OFF
= 25˚C unless otherwise specified. C
= 50pF
= 50pF
MAIN
<
ON/OFF
MAIN
4
Conditions
≤ 5V
for charging the
≤ V
8V, (Note 4)
MAIN
MAIN
= 0.1µF (low
≤
THRL
+ I
≤ 4.5V
THRH
≤ 7V(Note 6)
to 90% V
to 10% V
LEXT
MAIN
,, I
SOURCE
MAIN
MAIN
−50mV
V
5.35
Min
4.0
4.5
2.4
3.5
1.5
MAIN
35
35
10
−1
2
5
1
2
5
LM9073
OUT
≥ 6µF with 0.3Ω ≤ ESR ≤
V
Max
5.75
1.5
4.2
4.7
0.4
MAIN
6.0
1.5
0.5
.08
4.5
2.5
0.8
70
70
40
12
40
5
X I
Units
LTOTAL
mS
mS
mA
kΩ
µS
µS
µS
kΩ
µA
kΩ
V
V
V
V
V
V
V
V
V
V
V