Datasheet

4
LTC1694-1
16941fa
PIN FUNCTIONS
UUU
V
CC
(Pin 1): Power Supply Input. V
CC
can range from 2.7V
to 6V and requires a 0.1µF bypass capacitor to GND.
Supply current is typically 45µA when the SMBus or I
2
C
lines are inactive (SCL and SDA are a logic high level).
GND (Pin 2): Ground.
NC (Pin 3): No Connection.
SMBus2 (Pin 4): Active Pull-Up for SMBus.
SMBus1 (Pin 5): Active Pull-Up for SMBus.
BLOCK DIAGRAM
W
–
+
SLEW RATE
DETECTOR
CONTROL
LOGIC
0.65V
V
REF
VOLTAGE
COMP
2.2mA
CHANNEL ONE
CHANNEL TWO
(DUPLICATE OF CHANNEL ONE)
1694-1 BD
1
V
CC
5
SMBus1
SMBus2
2
GND
4
TEST CIRCUITS
Figure 1
LTC1694-1
V
CC
GND
V
CC
5V
C1
0.1µF
SMBus1
SMBus2
5
4
HP5082-2080
TEST RAMP VOLTAGE
BSS284
V
R
1k
–10V
1694-1 F01a
–
+
LT
®
1360
V
CC
5V
200µA
PULL-UP =
2.2mA (TYP)
200µA
(TYP)
TEST RAMP
VOLTAGE
0µA
V
CC
1694-1 F01b
0.5V/µs
0V
V
THRES
I
PULL-UP
=
V
R
1kΩ