MAX8520 View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
MAX8520 Datasheet PDF : 18 Pages
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Smallest TEC Power Drivers for Optical
Modules
Typical Operating Characteristics (continued)
(VDD = 5V, circuit of Figure 1, TA = +25°C unless otherwise noted)
DIFFERENTIAL
OUTPUT VOLTAGE RIPPLE
MAX8520/21 toc04
VDD RIPPLE
MAX8520/21 toc05
TEC CURRENT RIPPLE
MAX8520/21 toc06
C2 = C7 = 1µF
VOS2 - VOS1
1mV/div
AC-COUPLED
ITEC = 1A
VDD
20mV/div
AC-COUPLED
ITEC = 1A
1.5A
10mA/div
AC-COUPLED
0A
400ns/div
400ns/div
400ns/div
TEC CURRENT vs. CTLI VOLTAGE
MAX8520/21 toc07
VCTLI
1V/div
0V
ZERO-CROSSING TEC CURRENT
MAX8520/21 toc08
3.0
VCTLI
2.5
I00mV/div
1.5V
2.0
VITEC vs. TEC CURRENT
20ms/div
0A
ITEC
1A/div
1ms/div
ITEC vs. AMBIENT TEMPERATURE
0.520
0.510
0.500
0.490
1.5
0A
ITEC
100mA/div
1.0
0.5
0
-2.0 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0
TEC CURRENT (A)
SWITCHING FREQUENCY
vs. TEMPERATURE
1100
FREQ = 1MHz
1000
VCTLI = 1.5V
900 RTEC = 1Ω
800
0.480
700
0.470
FREQ = 1MHz
0.460
VCTLI = 2V
RTEC = 1Ω
0.450
-40 -20 0
+20 +40 +60 +80
AMBIENT TEMPERATURE (°C)
600
FREQ = 500KHz
500
400
-40 -20
0 +20 +40 +60 +80
TEMPERATURE (°C)
6 _______________________________________________________________________________________
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