MAX8520 MAXIM [Maxim Integrated Products], MAX8520 Datasheet - Page 7

• Manufacturer Part Number: MAX8520
• Description: Smallest TEC Power Drivers for Optical Modules
• Manufacturer: MAXIM [Maxim Integrated Products]

(V
DD
1200
1000
800
600
400
200
-1
-2
-3
-4
-5
0
5
4
3
2
1
0
= 5V, circuit of Figure 1, T
SWITCHING FREQUENCY CHANGE vs. V
-40
3.0
REF SOURCING 150µA
REFERENCE VOLTAGE CHANGE
-20
3.5
vs. TEMPERATURE
TEMPERATURE (°C)
0
4.0
_______________________________________________________________________________________
V
20
DD
CTLI STEP RESPONSE
(V)
4.5
40
FREQ = 1MHz
FREQ = 500kHz
1ms
A
5.0
60
= +25°C unless otherwise noted)
80
DD
5.5
MAX8520/21 toc18
Smallest TEC Power Drivers for
1100
1000
-10
-12
Typical Operating Characteristics (continued)
900
800
700
600
500
400
V
1V/div
1.5V
0A
I
1A/div
-2
-4
-6
-8
TEC
0
CTLI
60
0
SWITCHING FREQUENCY vs. R
REFERENCE VOLTAGE CHANGE
80
0.2
V
vs. LOAD CURRENT
DD
LOAD CURRENT (mA)
= 3.3V
100
0.4
R
EXT
V
(kΩ)
120
DD
0.6
= 5V
140
0.8
EXT
160
1.0
Optical Modules
V
DD
STEP RESPONSE
-0.2
-0.4
-0.6
-0.8
-1.0
-1.2
-1.4
0.6
0.4
0.2
0.0
10ms/div
3.0
STARTUP AND SHUTDOWN WAVEFORMS
REFERENCE VOLTAGE CHANGE vs. V
REF SOURCING 150µA
3.5
MAX8520/21 toc19
4.0
200µs/div
V
DD
(V)
V
2V/div
0V
1A
I
10mA/div
TEC
DD
4.5
MAX8520/21 toc17
5.0
DD
5.5
V
5V/div
0V
I
200mA/div
0mA
I
500mA/div
0mA
DD
TEC
SHDN
7