Datasheet

OPA549
SBOS093E
13
www.ti.com
FIGURE 10. Resistor-Controlled Programmable Power Supply.
FIGURE 11. Digitally-Controlled Programmable Power Supply.
G = 1 + = 10
9kΩ
1kΩ
9kΩ1kΩ
OPA549
+5V
+5V
0.12V to 2.5V
0V to 4.75V
Output
Adjust
Thermal
Shutdown Status
(LED)
74HCT04
R ≥ 250Ω
E/S
V
O
= 1V to 25V
I
O
= 0 to 10A
9
6
8
4
3
Ref
I
LIM
10.5kΩ
499Ω
10kΩ
Current
Limit
Adjust
1kΩ
20kΩ
0.01µF
V–
V+ = +30V
V– = 0V
DAC B
1/2 DAC7800/1/2
1/2 DAC7800/1/2
(3)
10pF
I
OUT B
R
FB B
AGND B
0.01µF
I
LIM
Thermal
Shutdown Status
(LED)
74HCT04
R ≥ 250Ω
9kΩ1kΩ
V
O
= 7V to 25V
V+ = +30V
V– = 0V
I
O
= 0A to 10A
G = 10
Ref
8
9
1, 2
E/S
6
4
3
DAC A
+5V
+5V
V
REF B
DGND
10pF
I
OUT A
R
FB A
OUTPUT ADJUST
OPA549
CURRENT LIMIT ADJUST
AGND A
V
REF A
Choose DAC780X based on digital interface: DAC7800—12-bit
interface, DAC7801—8-bit interface + 4 bits, DAC7802—serial interface.
1/2
OPA2336
1/2
OPA2336
V
REF
–5V