LM2984T National Semiconductor, LM2984T Datasheet - Page 6

• Manufacturer Part Number: LM2984T
• Description: IC,VOLT REGULATOR,FIXED,+5V,BIPOLAR,ZIP,11PIN,PLASTIC
• Manufacturer: National Semiconductor

Specifications of LM2984T

• Rohs Compliant: NO

www.national.com
Component
C
R
C
C
R
C
R
C
C
C
IN
t
t
tc
tc
mon
rst
stby
buf
OUT
Pin Description
External Components
Typical Value
0.33 µF
0.01 µF
0.47 µF
10 µF
10 µF
10 µF
130k
1 µF
10k
10k
Pin No.
10
11
1
2
3
4
5
6
7
8
9
0.033 µF–3.3 µF
0.001 µF–0.1 µF
0.047 µF–4.7 µF
10 µF–no bound
10 µF–no bound
10 µF–no bound
0.47 µF–10 µF
Component
24k–510k
1k–100k
5k–100k
Range
V
R
C
µP
C
Ground
Reset
ON/OFF
V
V
V
Pin Name
IN
standby
buffer
OUT
t
t
mon
mon
Positive supply input voltage
Sets internal timing currents
Sets power-up reset delay timing
Microcomputer monitor input
Sets µC monitor timing
Regulator ground
Reset error flag output
Enables/disables high current regulators
Standby regulator output (7.5 mA)
Buffer regulator output (100 mA)
Main regulator output (500 mA)
Required if device is located far from power supply filter.
Sets internal timing currents.
Sets power-up reset delay.
Establishes time constant of AC coupled computer monitor.
Establishes time constant of AC coupled computer monitor. (See
applications section.)
Sets time window for computer monitor. Also determines period and pulse
width of computer malfunction reset. (See applications section.)
Load for open collector reset output. Determined by computer reset input
requirements.
A 10 µF is required for stability but larger values can be used to maintain
regulation during transient conditions.
A 10 µF is required for stability but larger values can be used to maintain
regulation during transient conditions.
A 10 µF is required for stability but larger values can be used to maintain
regulation during transient conditions.
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