Datasheet

LM3914
SNVS761B –JANUARY 2000–REVISED MARCH 2013 www.ti.com
ELECTRICAL CHARACTERISTICS
(1)(2)
(continued)
Parameter Conditions
(1)
Min Typ Max Units
VOLTAGE REFERENCE
Output Voltage 0.1 mA ≤ I
L(REF)
≤ 4 mA,
1.2 1.28 1.34 V
V
+
= V
LED
= 5V
Line Regulation 3V ≤ V
+
≤ 18V 0.01 0.03 %/V
Load Regulation 0.1 mA ≤ I
L(REF)
≤ 4 mA,
0.4 2 %
V
+
= V
LED
= 5V
Output Voltage Change with 0°C ≤ T
A
≤ +70°C, I
L(REF)
= 1 mA,
1 %
Temperature V
+
= 5V
Adjust Pin Current 75 120 μA
OUTPUT DRIVERS
LED Current V
+
= V
LED
= 5V, I
L(REF)
= 1 mA 7 10 13 mA
V
LED
= 5V I
LED
= 2 mA 0.12 0.4
LED Current Difference (Between
mA
Largest and Smallest LED Currents)
I
LED
= 20 mA 1.2 3
LED Current Regulation 2V ≤ V
LED
≤ 17V I
LED
= 2 mA 0.1 0.25
mA
I
LED
= 20 mA 1 3
Dropout Voltage I
LED(ON)
= 20 mA, V
LED
= 5V,
1.5 V
ΔI
LED
= 2 mA
Saturation Voltage I
LED
= 2.0 mA, I
L(REF)
= 0.4 mA 0.15 0.4 V
Output Leakage, Each Collector (Bar Mode)
(4)
0.1 10 μA
Output Leakage (Dot Mode)
(4)
Pins 10–18 0.1 10 μA
Pin 1 60 150 450 μA
SUPPLY CURRENT
Standby Supply Current V
+
= 5V,
2.4 4.2 mA
(All Outputs Off) I
L(REF)
= 0.2 mA
V
+
= 20V,
6.1 9.2 mA
I
L(REF)
= 1.0 mA
(4) Bar mode results when pin 9 is within 20mV of V
+
. Dot mode results when pin 9 is pulled at least 200mV below V
+
or left open circuit.
LED No. 10 (pin 10 output current) is disabled if pin 9 is pulled 0.9V or more below V
LED
.
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