NTE1503
Integrated Circuit
5鈥揝tep LED Driver Circuit
for Logarithmic Response
Description:
The NTE1503 is an integrated circuit in a 9鈥揕ead SIP type package designed for driving 5鈥揕ED bar
graphs or dot displays so that the LEDs may light logarithmically (dB) for input signal. Brightness of
the LEDs can be controlled by using the output current adjustment pin provided.
Features:
D
5鈥揕ED Bar Graph or Dot Display Drive
D
Logarithmic Response with Respect to Input
D
Brightness Externally Adjustable
D
High Output Current, Suitable for Green LED Drive
D
Lamp ON/OFF Hysteresis, No Flickering by Noise
Absolute Maximum Ratings:
(T
A
= +25擄C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.5V to +18V
Circuit Voltage, V
8鈥?
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.5V to +16V
Load Current Set Input Voltage, V
7鈥?
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +16V
Output Voltage (Note 1), V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?.5V to +16V
Supply Current, I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18mA
Load Current Set Input Current, I
7
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.25mA
Output Current, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20mA
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 550mW
Operating Ambient Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0擄 to +75擄C
Storage Temperatuere Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5擄 to +150擄C
Note 1. Output Pin1, Pin2, Pin3, Pin4, and Pin6.
Electrical Characteristics:
(T
A
= +25擄C, V
CC
= 16V unless otherwise specified)
Parameter
Input Voltage (LED ON)
LED 1
LED 2
LED 3
LED 4
LED 5
Symbol
V
I(ON)1
V
I(ON)2
V
I(ON)3
V
I(ON)4
V
I(ON)5
Test Conditions
Min
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Typ
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Max
1.12
1.86
3.10
5.18
8.66
Unit
V
V
V
V
V
NTE1503 產品屬性
NTE
置換半導體
否
1
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