MAX1978ETM Maxim Integrated Products, MAX1978ETM Datasheet - Page 7

• Manufacturer Part Number: MAX1978ETM
• Description: Other Power Management
• Manufacturer: Maxim Integrated Products

Specifications of MAX1978ETM

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

(V
3.0
2.5
2.0
1.5
1.0
0.5
90
80
70
60
50
40
30
20
10
0
0
DD
-3
0
= 5V, V
EFFICIENCY vs. TEC CURRENT
-2
0.5
V
INPUT SUPPLY RIPPLE
ITEC
CTLI
-1
TEC CURRENT (A)
TEC CURRENT (A)
vs. TEC CURRENT
1.0
V
200ns/div
= 1V, V
DD
0
= 5V
_______________________________________________________________________________________
1.5
FREQ
1
R
TEC
= 1.1Ω
2.0
= GND, RTEC = 1Ω, circuit of Figure 1, T
2
2.5
3
V
20mV/div
AC-COUPLED
DD
1.010
1.005
1.000
0.995
0.990
80
70
60
50
40
30
20
10
0
Controllers for Peltier Modules
-40
0
TEC CURRENT vs. TEMPERATURE
TEC CURRENT vs. CTLI VOLTAGE
EFFICIENCY vs. TEC CURRENT
-20
0.5
TEMPERATURE (°C)
0
TEC CURRENT (A)
V
1.0
DD
20ms/div
20
= 3.3V
Integrated Temperature
R
1.5
TEC
40
I
R
Typical Operating Characteristics
TEC
A
SENSE
= 0.855Ω
= +25°C, unless otherwise noted.)
= 1A
2.0
60
= 0.68Ω
-0V
-0A
80
2.5
V
1V/div
I
2A/div
TEC
CTLI
AC-COUPLED
AC-COUPLED
V
200mV/div
500mA/div
100mV/div
100mV/div
OS1
50mV/div
- V
V
V
V
CTLI
I
508
506
504
502
500
498
496
494
492
TEC
OS2
OS1
OS1
-40
V
R
CTLI
TEC
ZERO-CROSSING TEC CURRENT
-20
= 1.5V
= 1Ω
SWITCHING FREQUENCY
RIPPLE WAVEFORMS
vs. TEMPERATURE
OUTPUT-VOLTAGE
TEMPERATURE (°C)
0
1ms/div
400ns/div
20
40
60
80
7
1.5V
0A