Datasheet

Integrated Temperature
Controllers for Peltier Modules
MAX1978
1.5V
REFERENCE
MAX V
TEC
=
V
MAXV
x 4
MAX I
TEC
= (V
MAXIP
/
V
REF
) x (0.15V/R
SENSE
)
MAX I
TEC
= (V
MAXIN
/
V
REF
) x (0.15V/R
SENSE
)
REF
MAXV
MAXIP
MAXIN
ITEC
CTLI
COMP
GND
OT
UT
CS
OS1
REF
REF + 1V
REF - 1V
R
PGND2
R
50R
50R
REF
DIFOUTAIN+AOUT FB+ FB-
BFB+
BFB-
INT-
REF
AIN-INTOUT
LX2
OS2
OS1
CS
PGND1
LX1
PV
DD
1
V
DD
PV
DD
2
V
DD
R
SENSE
3V TO 5.5V
ON
OFF
SHDN FREQ
PWM CONTROL AND GATE DRIVE
Functional Diagram
MAX1978/MAX1979
Maxim Integrated
11