LM3914 Datasheet, PDF (3/19 Pages) National Semiconductor (TI) – Dot/Bar Display Driver

Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Dissipation (Note 6)
Molded DIP (N)
Supply Voltage
Voltage on Output Drivers
Input Signal Overvoltage (Note 4)
Divider Voltage
1365 mW
25V
25V
±35V
−100 mV to V⁺
Reference Load Current
10 mA
Storage Temperature Range
−55˚C to +150˚C
Soldering Information
Dual-In-Line Package
Soldering (10 seconds)
260˚C
Plastic Chip Carrier Package
Vapor Phase (60 seconds)
215˚C
Infrared (15 seconds)
220˚C
See AN-450 “Surface Mounting Methods and Their Effect
on Product Reliability” for other methods of soldering
surface mount devices.
Electrical Characteristics (Notes 2, 4)
Parameter
Conditions (Note 2)
Min
Typ
Max
Units
COMPARATOR
Offset Voltage, Buffer and First
Comparator
Offset Voltage, Buffer and Any Other
Comparator
Gain (∆I_LED/∆V_IN)
Input Bias Current (at Pin 5)
Input Signal Overvoltage
0V ≤ V_RLO = V_RHI ≤ 12V,
I_LED = 1 mA
0V ≤ V_RLO = V_RHI ≤ 12V,
I_LED = 1 mA
I_L(REF) = 2 mA, I_LED = 10 mA
0V ≤ V_IN ≤ V⁺ − 1.5V
No Change in Display
3
3
3
8
25
−35
10
mV
15
mV
mA/mV
100
nA
35
V
VOLTAGE-DIVIDER
Divider Resistance
Total, Pin 6 to 4
8
12
17
kΩ
Accuracy
(Note 3)
0.5
2
%
VOLTAGE REFERENCE
Output Voltage
Line Regulation
0.1 mA ≤ I_L(REF) ≤ 4 mA,
V⁺ = V_LED = 5V
3V ≤ V⁺ ≤ 18V
1.2
1.28
1.34
V
0.01
0.03
%/V
Load Regulation
Output Voltage Change with
Temperature
0.1 mA ≤ I_L(REF) ≤ 4 mA,
V⁺ = V_LED = 5V
0˚C ≤ T_A ≤ +70˚C, I_L(REF) = 1 mA,
V⁺ = 5V
0.4
2
%
1
%
Adjust Pin Current
75
120
µA
OUTPUT DRIVERS
LED Current
LED Current Difference (Between
Largest and Smallest LED Currents)
LED Current Regulation
Dropout Voltage
Saturation Voltage
Output Leakage, Each Collector
V⁺ = V_LED = 5V, I_L(REF) = 1 mA
V_LED = 5V
I_LED = 2 mA
I_LED = 20 mA
2V ≤ V_LED ≤ 17V
I_LED = 2 mA
I_LED = 20 mA
I_LED(ON) = 20 mA, V_LED = 5V,
∆I_LED = 2 mA
I_LED = 2.0 mA, I_L(REF) = 0.4 mA
(Bar Mode) (Note 5)
7
10
13
mA
0.12
0.4
mA
1.2
3
0.1
0.25
mA
1
3
1.5
V
0.15
0.4
V
0.1
10
µA
Output Leakage
(Dot Mode)
(Note 5)
Pins 10–18
Pin 1
0.1
10
µA
60
150
450
µA
SUPPLY CURRENT
Standby Supply Current
(All Outputs Off)
V⁺ = 5V,
I_L(REF) = 0.2 mA
V⁺ = 20V,
I_L(REF) = 1.0 mA
2.4
4.2
mA
6.1
9.2
mA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-
tional, but do not guarantee specific performance limits. Electrical Characteristics state DC and AC electrical specifications under particular test conditions which guar-
antee 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.
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