NTE1500 & NTE1501
Integrated Circuit
7鈥揝tep LED Driver Circuit
Description:
The NTE1500 and NTE1501 are integrated circuits designed for driving 7鈥揹ot LED displays. The
NTE1500 responds logarithmically to the input signal while the NTE1501 responds linearly. Because
an adjustment pin for output current is provided, the brightness of the LED can be controlled.
Features:
D
Linear (NTE1501) and Logarithmic (NTE1500) Response
D
7鈥揕ED Bar Graph Display Driver
D
Brightness is Externally Adjustable
D
High Output Current: 25mA Max
D
Series Connection Capable for Driving more than 7鈥揇ot Displays
Absolute Maximum Ratings:
(T
A
= +25掳C unless otherwise specified)
Supply Voltage, V
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18V
Circuit Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.5V
Input Voltage, V
I
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Output Voltage, V
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16V
Supply Current, I
CC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Output Current, I
O
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Power Dissipation, P
D
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1800mW
Operating Ambient Temperature Range, T
opr
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?0掳 to +75掳C
Storage Temperature Range, T
stg
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 鈥?5掳 to +150掳C
Electrical Characteristics:
(T
A
= +25掳C, V
CC
= 9V unless otherwise specified)
Parameter
Supply Current
Output Inflow Current
Reference Voltage
Output Offset Voltage (Amp)
Voltage Gain (Amp)
Output Pin Leakage Current
Symbol
I
tot
V
REF
V
O(offset)
G
V
I
O(Leak)
V
CC
= 16V, G
V
= 20dB, V
2
= 0
V
2
= 50mV
V
CC
= 18V
V
2
= 0
Test Conditions
Min
4
13
3.55
鈥?50
18
0
Typ
鈥?/div>
鈥?/div>
3.75
鈥?/div>
20
鈥?/div>
Max
18
25
3.95
+150
22
20
Unit
mA
mA
V
mV
dB
碌A
I
(SINK)9鈥?5
V
I
= 3.55V, V
7
= 3.5V
1
2
3
