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参数资料
| 型号： | NTE1549 |
| 厂商： | NTE Electronics, Inc. |
| 英文描述： | Integrated Circuit Dot/Bar Display Driver |
| 中文描述： | 集成电路点/酒吧显示驱动程序 |
| 文件页数： | 3/4页 |
| 文件大小： | 29K |
| 代理商： | NTE1549 |
Electrical Characteristics (Cont’d): (Note 3)
Parameter
Test Conditions
Min
Typ
Max
Unit
Output Drivers
LED Current
V+ = VLED = 5V, IL(REF) = 1mA
7
10
13
mA
LED Current Difference (Between Largest and Smallest
VLED = 5V, ILED = 2mA
–
0.12
0.4
mA
LED Currents)
VLED = 5V, ILED = 20mA
–
1.2
3.0
mA
LED Current Regulation
2V
≤ VLED ≤ 17V, ILED = 2mA
–
0.1
0.25
mA
2V
≤ VLED ≤ 17V, ILED = 20mA
–
1.0
3.0
mA
Dropout Voltage
ILED(ON) = 20mA @ VLED = 0.4mA, ILED = 2mA
–
1.5
V
Saturation Voltage
ILED = 2mA, IL(REF) = 0.4mA
–
0.15
0.4
V
Output Leakage, Each Collector
Bar Mode, Note 5
–
0.1
100
A
Output Leakage, Pin10 through Pin18
Dot Mode, Note 5
–
0.1
100
A
Output Leakage, Pin1
60
150
450
A
Supply Current
Standby Supply Current (All Outputs Off)
V+ = +5V, IL(REF) = 0.2mA
–
2.4
4.2
mA
V+ = +20V, IL(REF) = 1mA
–
6.1
9.2
mA
Note 3. Unless otherwise stated, all specifications apply with the following conditions:
3VDC ≤ V+ ≤ 20VDC; –0.015V ≤ VRLO ≤ 12VDC; TA = +25°C, IL(REF) = 0.2mA, Pin9 con-
nected to Pin3 bar mode.
3VDC
≤ VLED ≤ V+; VREF, VRHI, VRLO ≤ (V+ –1.5V); For higher power dissipations, pulse
testing is used.
–0.015V
≤ VRHI ≤ 12VDC; 0V ≤ VIN ≤ V+ –1.5V
Note 5. Bar mode results when Pin9 is within 20mV of V+. Dot mode results when Pin9 is pulled at
least 200mV below V+. LED #10 (Pin10 output current) is disabled if Pin9 is pulled 0.9V or
more below VLED.
Threshold Voltage: (Note 4)
Volts
dB
Min
Typ
Max
dB
Min
Typ
Max
3
9.985
10.000
10.015
–3
±1/2
4.732
5.012
5.309
2
±1/4
8.660
8.913
9.173
–5
±1/2
3.548
3.981
4.467
1
±1/4
7.718
7.943
8.175
–7
±1
2.818
3.162
3.548
0
±1/4
6.879
7.079
7.286
–10
±1
1.995
2.239
2.512
–1
±1/2
5.957
6.310
6.683
–20
±1
0.631
0.708
0.794
Note 4. Accuracy is measured referred to +3dB = +3dB = +10.000VDC at Pin5, with +10.000VDC at
Pin6, and 0.000 VDC at Pin4. At lower full–scale voltages, buffer and comparator offset volt-
age may add significant error.
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