LM3915N National Semiconductor, LM3915N Datasheet - Page 3

• Manufacturer Part Number: LM3915N
• Description: IC DRIVER DOT BAR DISPLAY 18-DIP
• Manufacturer: National Semiconductor

Specifications of LM3915N

• Display Type: LED, LCD, Vacuum Fluorescent
• Configuration: Dot/Bar Display
• Digits Or Characters: 10 Steps
• Current - Supply: 6.1mA
• Voltage - Supply: 3 V ~ 25 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Through Hole
• Package / Case: 18-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Interface: -
• Other names: *LM3915N; LM3915

Electrical Characteristics
Note 1 Unless otherwise stated all specifications apply with the following conditions
Note 2 Accuracy is measured referred to 0 dB
and comparator offset voltage may add significant error See table for threshold voltages
Note 3 Pin 5 input current must be limited to
Note 4 Bar mode results when pin 9 is within 20 mV of V
disabled if pin 9 is pulled 0 9V or more below V
Note 5 The maximum junction temperature of the LM3915 is 100 C Devices must be derated for operation at elevated temperatures Junction to ambient thermal
resistance is 55 C W for the molded DIP (N package)
Output Drivers
LED Current
LED Current Difference (Between Largest
and Smallest LED Currents)
LED Current Regulation
Dropout Voltage
Saturation Voltage
Output Leakage Each Collector
Output Leakage
Supply Current
Standby Supply Current
(All Outputs Off)
Output
3 V
3 V
b
Pins 10-18
Pin 1
0 015V
1
2
3
4
5
DC s
DC s
V
V
s
LED s
a
V
s
RHI s
20 V
Parameter
b
b
b
b
b
dB
V
a
27
24
21
18
15
12 V
DC
DC
0 422
0 596
0 841
1 189
1 679
V
0V
b
Min
REF
0 015V
s
V
V
IN s
RHI
s
g
e a
V
LED
V
V
3 mA The addition of a 39k resistor in series with pin 5 allows
RLO s
RLO s
a
0 447
0 631
0 891
1 259
1 778
Typ
b
10 000 V
(Note 1) (Continued)
1 5V
(V
12 V
a
THRESHOLD VOLTAGE (Note 2)
a
Dot mode results when pin 9 is pulled at least 200 mV below V
V
V
V
2V
I
I
Bar Mode (Note 4)
Dot Mode (Note 4)
V
V
LED(ON)
LED
b
DC
DC
LED
LED
a
I
a
a
LED
1 5V)
s
at pin 5 with
e
e a
e a
e
0 531
0 750
1 059
1 413
1 995
e
e
V
Max
e
V
Conditions (Note 1)
LED s
2 0 mA I
LED
5V I
5V I
e
5V I
20V I
2 mA
T
For higher power dissipations pulse testing is used
A
20 mA
e
e
LED
LED
L(REF)
17V I
a
3
L(REF)
25 C I
5V I
L(REF)
10 000 V
20 mA
e
Output
I
LED
LED
L(REF)
2 mA
L(REF)
e
10
V
e
6
7
8
9
LED
0 2 mA
e
DC
e
e
1 0 mA
e
0 4 mA
at pin 6 and 0 000 V
e
2 mA
20 mA
e
0 2 mA pin 9 connected to pin 3 (bar mode)
1 mA
5V
b
b
b
b
dB
0
12
9
6
3
g
Min
60
100V signals without damage
7
DC
at pin 4 At lower full scale voltages buffer
2 372
3 350
4 732
6 683
9 985
Min
a
Typ
0 12
0 15
LED
150
1 2
0 1
0 1
0 1
2 4
6 1
10
1
10 (pin 10 output current) is
2 512
3 548
5 012
7 079
Typ
10
Max
0 25
450
0 4
1 5
0 4
4 2
9 2
13
10
10
3
3
10 015
2 819
3 825
5 309
7 498
Max
Units
mA
mA
mA
mA
mA
mA
mA
V
V
A
A
A