Data Sheet
May 2001
L8576B Dual Ringing SLIC
Applications (continued)
Characteristic Curves (continued)
50
45
40
35
1500
1000
2 CH
30
VBAT = –65 V
25
20
15
500
1 CH
VBAT = –48 V
10
5
0
0
0
200 400 600 800 1000 1200 1400 1600 1800 2000
0
10
20
30
40
50
60
LOOP RESISTANCE (Ω)
LOOP VOLTAGE (V)
12-3504 (F)
12-3503 (F)
Note: RPROG = 51.1 kΩ.
Figure 15. SLIC Power Dissipation vs. Loop
Resistance (VBAT = –48 V)
Figure 13. Loop Current vs. Loop Voltage
50
1500
45
40
35
30
25
20
15
2 CH
1000
VBAT = –65 V
1 CH
500
0
VBAT = –48 V
10
5
0
0
200 400 600 800 1000 1200 1400 1600 1800 2000
0
200 400 600 800 1000 1200 1400 1600 1800 2000
LOOP RESISTANCE (Ω)
LOOP RESISTANCE (Ω)
12-3505 (F)
12-3506 (F)
Note: RPROG = 51.1 kΩ.
Figure 16. SLIC Power Dissipation vs. Loop
Resistance (VBAT = –65 V)
Figure 14. Loop Current vs. Loop Resistance
16
Agere Systems Inc.
AGERE [ AGERE SYSTEMS ]
