MAX8521 Maxim Integrated Products, MAX8521 Datasheet - Page 6

• Manufacturer Part Number: MAX8521
• Description: Smallest TEC Power Drivers
• Manufacturer: Maxim Integrated Products

Smallest TEC Power Drivers for Optical
Modules
6
(V
DD
TEC CURRENT vs. CTLI VOLTAGE
_______________________________________________________________________________________
OUTPUT VOLTAGE RIPPLE
= 5V, circuit of Figure 1, T
DIFFERENTIAL
400ns/div
20ms/div
0.520
0.510
0.500
0.490
0.480
0.470
0.460
0.450
-40
FREQ = 1MHz
V
R
MAX8520/21 toc04
MAX8520/21 toc07
I
TEC
CTLI
TEC
-20
= 1Ω
= 2V
vs. AMBIENT TEMPERATURE
AMBIENT TEMPERATURE (°C)
A
0
= +25°C unless otherwise noted)
0V
0A
C
V
1mV/div
AC-COUPLED
I
V
1V/div
I
1A/div
TEC
TEC
2
OS2
CTLI
= C
= 1A
- V
+20
7
= 1µF
OS1
+40
+60
Typical Operating Characteristics (continued)
ZERO-CROSSING TEC CURRENT
+80
V
DD
400ns/div
1ms/div
RIPPLE
MAX8520/21 toc08
MAX8520/21 toc05
1100
1000
V
I00mV/div
1.5V
0A
I
100mA/div
V
20mV/div
AC-COUPLED
I
TEC
900
800
700
600
500
400
TEC
CTLI
DD
= 1A
-40
FREQ = 1MHz
V
R
FREQ = 500KHz
CTLI
TEC
-20
= 1Ω
= 1.5V
SWITCHING FREQUENCY
3.0
2.5
2.0
1.5
1.0
0.5
vs. TEMPERATURE
0
TEMPERATURE (°C)
-2.0
0
-1.5
+20
TEC CURRENT RIPPLE
V
-1.0
ITEC
+40
TEC CURRENT (A)
-0.5
vs. TEC CURRENT
400ns/div
www.DataSheet4U.com
+60
0
+80
0.5
MAX8520/21 toc06
1.0
1.5
2.0
1.5A
10mA/div
AC-COUPLED
0A