Datasheet

TL499A
WIDE-RANGE POWER-SUPPLY CONTROLLERS
SLVS029G – JANUARY 1984 – REVISED SEPTEMBER 2001
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
APPLICATION INFORMATION
Table 4. Maximum Output Current vs Input and Output Voltages
for Step-Up Switching Regulator With R
CL
= 510 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 30 50
25 25 40 75
20 40 55 90
15 15 20 55 70 100
12 10 15 25 35 65 80 100
10 10 20 25 30 40 70 85
9 10 10 10 15 20 25 35 45 75 100
6 15 20 20 25 30 35 50 60
5 20 20 25 30 35 45 55 70 Circuit of Figure 1, except:
4.5 20 25 30 35 40 50 65 90
†
R
CL
= 510 Ω
3 35 35
†
40
†
50
†
75
†
C
F
= 330 µF
2.9 35
†
35
†
40
†
55
†
80
†
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 5. Maximum Output Current vs Input and Output Voltages
for Step-Up Switching Regulator With R
CL
= 1 kΩ
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 35
25 35 50
20 35 60
15 10 30 45 65
12 20 40 45 85
10 15 25 40 55
9 10 10 15 25 30 45 60
6 10 10 10 15 20 20 30 35
5 10 10 15 20 20 25 35 40 Circuit of Figure 1, except:
4.5 15 15 15 20 25 30 40 45
†
R
CL
= 1 kΩ
3 20 25
†
25
†
30
†
35
†
C
F
= 330 µF
2.9 20
†
25
†
25
†
30
†
45
†
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).