Datasheet

OPA567
SBOS287A
19
www.ti.com
FIGURE 15. Single Power Amplifier Driving Bidirectional Current through a TEC using Asymmetrical Bipolar Power Supplies.
FIGURE 13. Grounded Anode LED Driver.
APPLICATION CIRCUITS
FIGURE 14. Bridge-Tied Load Driver.
Luxeon Star-0
High-Power LED
1, 12
8
9
4, 5
(1)
2, 3
6
R
SET
V
O
f
O
= 10kHz
V
IN
OPA567
R
1
49.9kΩ
R
SHUNT
1Ω
I
O
R
2
4.99kΩ
4.99kΩ
0.0033µF
R
3
49.9kΩ
–5V
+1V
0V
0mA
–100mA
0V
–2.5V
Feedback for Constant Current,
1V Input per 100mA Output as Shown.
NOTE: (1) Bypass as recommended.
R
SET
V
SET
TEC
OPA567
1kΩ
Heat/Cool
V
TEC
V
TEC
= 2 (V
IN
– V
SET
)
+ –
8
1, 12
4, 5
2, 3
I
SET
I
SET
4, 5
8
9
3
6
1, 12
2, 3
R
SET
NOTE: (1) Bypass as recommended.
5V
(1)
5V
9
1kΩ
V
IN
OPA567
(1)
OPA567
8
1, 12
4, 5
6
–1.2V
2, 3
NOTE: Total Supply Must
be < 5.5V Cooling/Heating.
NOTE: (1) Bypass as recommended.
R
SET
I
SET
+3.3V
(1)
9
V
IN
TEC
I
L