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LM2984 Datasheet(PDF) 3 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM2984
Description  Microprocessor Power Supply System
PDF  16 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2984 Datasheet(HTML) 3 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
V
IN = 14V, Ibuf = 5 mA, Cbuf = 10 µF, unless otherwise indicated. Boldface type refers to limits over the entire operating tem-
perature range, −40˚C
≤ T
A ≤ +125˚C, all other limits are for TA = Tj = 25˚C (Note 8) .
Parameter
Conditions
Typical
Limit
Units
(Note 4)
V
buffer (Pin 10)
Output Noise Voltage
10 Hz–100 kHz, I
OUT = 100 mA
100
µV
Long Term Stability
20
mV/1000 hr
Ripple Rejection
f
o = 120 Hz
70
60/50
dB
min
Dropout Voltage
I
buf = 100 mA
0.35
0.50/0.80
V
max
Current Limit
0.23
0.15/0.15
A
min
Maximum Operational
Continuous DC
32
26/26
V
min
Input Voltage
Maximum Line
V
buf ≤ 6V, Rbuf = 100Ω,
65
60/60
V
min
Transient
T
≤ 100 ms
Reverse Polarity
V
buf ≥ −0.6V, Rbuf = 100Ω
−30
−15/−15
V
min
Input Voltage DC
Reverse Polarity Input
T
≤ 100 ms, R
buf = 100Ω
−55
−35/−35
V
min
Voltage Transient
Electrical Characteristics
V
IN = 14V, Istby = 1 mA, Cstby = 10 µF, unless otherwise indicated. Boldface type refers to limits over the entire operating tem-
perature range, −40˚C
≤ T
A ≤ +125˚C, all other limits are for TA = Tj = 25˚C (Note 8) .
Parameter
Conditions
Typical
Limit
Units
(Note 4)
V
standby (Pin 9)
Output Voltage
1 mA
≤ I
O ≤ 7.5 mA
5.00
4.85/4.75
V
min
6V
≤ V
IN ≤ 26V
5.15/5.25
V
max
Line Regulation
9V
≤ V
IN ≤ 16V
2
25/25
mV
max
7V
≤ V
IN ≤ 26V
5
50/50
mV
max
Load Regulation
0.5 mA
≤ I
OUT ≤ 7.5 mA
6
50/50
mV
max
Output Impedance
5 mA
dc and1mArms,fo = 120 Hz
0.9
Ω
Quiescent Current
I
stby = 7.5 mA
1.2
2.0/4.0
mA
max
I
stby = 2 mA
0.9
1.5/4.0
mA
max
Output Noise Voltage
10 Hz–100 kHz, I
stby = 1 mA
100
µV
Long Term Stability
20
mV/1000 hr
Ripple Rejection
f
o = 120 Hz
70
60/50
dB
min
Dropout Voltage
I
stby = 1 mA
0.26
0.50/0.60
V
max
I
stby = 7.5 mA
0.38
0.60/0.70
V
max
Current Limit
15
12/12
mA
min
Maximum Operational
4.5V
≤ V
stby ≤ 6V,
65
60/60
V
min
Input Voltage
R
stby = 1000Ω
Maximum Line
V
stby ≤ 6V, T ≤ 100 ms,
65
60/60
V
min
Transient
R
stby = 1000Ω
Reverse Polarity
V
stby ≥ −0.6V,
−30
−15/−15
V
min
Input Voltage DC
R
stby = 1000Ω
Reverse Polarity Input
T
≤ 100 ms, R
stby = 1000Ω
−55
−35/−35
V
min
Voltage Transient
3
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