SM6611 series
BLOCK DIAGRAM
VDD
TEST1
TEST2
TEST3
Output inverting
temperature detect
Comparator
Reference
temperature sensor
VSS
PIN DESCRIPTION
Number
1
2
Name
VDD
T1
I/O
–
3
4
5
6
pre
NIPPON PRECISION CIRCUITS—2
lim
Supply voltage
–
OUT
O
T3
–
VSS
T2
–
Ground
–
ina
Hysteresis control
Description
Test pin 1. This pin is used for test purposes by NPC. It has a built-in pull-up resistor. Leave
open for normal operation.
Output.
SM6611
×
AH: Open-drain output. A pull-up resistor of 100k
Ω
should be connected to this
pin. Goes LOW when the switch preset temperature is exceeded.
SM6611
×
BH: CMOS output. Goes LOW to HIGH when the switch preset temperature is
exceeded.
Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
Test pin 3. This pin is used for test purposes by NPC. Connect to VSS for normal operation.
ry
Output
buffer
OUT
NPC [ NIPPON PRECISION CIRCUITS INC ]
