Datasheet

TL499A
WIDE-RANGE POWER-SUPPLY CONTROLLERS
SLVS029G – JANUARY 1984 – REVISED SEPTEMBER 2001
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
Table 2. Maximum Output Current vs Input and Output Voltages
for Step-Up Switching Regulator With R
CL
= 200 Ω
OUTPUT
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2)
(V)
OUTPUT
VOLTAGE
1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9
(V)
OUTPUT CURRENT
(mA)
30 50 100
25 50 70 100
20 15 25 30 70 90 100
15 10 15 25 35 45 90 100 100
12 10 10 15 20 25 35 45 60 100 100 100
10 15 20 20 25 30 40 55 70 100 100
9 20 20 25 30 35 45 60 80 100
6 25 30 35 45 50 65 90 100
5 30 35 40 55 60 75 100 100 Circuit of Figure 1, except:
4.5 35 40 45 55 65 85 100 100
†
R
CL
= 200 Ω
3 50 55
†
65
†
80
†
90
†
C
F
= 330 µF
2.9 50
†
60
†
65
†
85
†
100
†
C
P
= 0.1 µF
†
The difference between the output and input voltage for these combinations is greater than the minimum
output-to-input differential-voltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).
Table 3. Maximum Output Current vs Input and Output Voltages
for Step-Up Switching Regulator With R
CL
= 300 Ω
OUTPUT
SWITCHING REGULATOR INPUT VOLTAGE (SW REG IN2)
(V)
OUTPUT
VOLTAGE
1.1 1.2 1.3 1.5 1.7 2 2.5 3 5 6 9
(V)
OUTPUT CURRENT
(mA)
30 40 70
25 40 55 100
20 10 15 20 55 70 100
15 10 10 20 30 35 75 95 100
12 10 10 10 15 20 25 35 45 95 100 100
10 15 15 15 20 25 30 45 55 100 100
9 15 15 20 25 30 35 50 60 100 100
6 25 25 30 35 45 55 70 90
5 30 30 35 45 50 65 85 100 Circuit of Figure 1, except:
4.5 30 35 40 45 55 70 95 100
†
R
CL
= 300 Ω
3 45 50
†
55
†
70
†
90
†
C
F
= 330 µF
2.9 45
†
50
†
60
†
75
†
95
†
C
P
= 0.1 µF
†
The difference between the output and input voltage for these combinations is greater than the minimum
output-to-input differential-voltage specification at 70°C (1.2 V), but less than the minimum at 85°C (1.9 V).