Rainbow Electronics DS2741 - Manual (Page 4)

DS2741
Current Monitor and Accumulator with
Integrated Sense Resistor
4 _______________________________________________________________________________________
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
DS2741 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (
μ
A)
4.0 3.5 3.0
10
20
30
40
50
60
70
0
2.5 4.5
SLP = SDA = SCL = V CC
T A = +25 °C
SLEEP-MODE CURRENT
vs. SUPPLY VOLTAGE
DS2741 toc02
SUPPLY VOLTAGE (V)
SLEEP-MODE CURRENT (
μ
A)
4.0 3.5 3.0
0.5
1.0
1.5
2.0
0
2.5 4.5
SDA = SCL = V CC
SLP = GND
T
A = +25 °C
SUPPLY CURRENT
vs. TEMPERATURE
DS2741 toc03
TEMPERATURE ( °C)
SUPPLY CURRENT (
μ
A)
60 50 40 30 20 10 -10 0
10
20
30
40
50
60
70
0
-20 70
SLP = SDA = SCL = V CC = +3.5V
SUPPLY CURRENT
vs. SCL FREQUENCY
DS2741 toc04
SCL FREQUENCY (kHz)
SUPPLY CURRENT (
μ
A)
350 300 250 200 150 100 50
10
20
30
40
50
60
70
0
0 400
SLP = SDA = SCL = V CC = +3.5V
T A = +25 °C
DISTRIBUTION OF CURRENT-SENSE
OFFSET
DS2741 toc05
CURRENT-SENSE OFFSET (mA)
POPULATION OF PARTS
-1 2 5 8 -7 -4
10
20
30
40
50
60
70
80
90
0
-10
247 SAMPLES
INITIAL CURRENT-SENSE ACCURACY
DISTRIBUTION
DS2741 toc06
CURRENT-SENSE ACCURACY (%)
POPULATION OF PARTS
1.6 1.0 0.4 -0.2 -0.8 -1.4
10
20
30
40
50
60
0
-2.0
I SENSE AT 1.5A
247 SAMPLES
Typical Operating Characteristics
(V CC = +2.5V to +4.5V, T A = -20°C to +70°C, unless otherwise noted.)