Typical operating characteristics – Rainbow Electronics MAX5943 User Manual
Page 5
MAX5943
FireWire Current Limiter and Low-Drop
ORing Switch Controller
_______________________________________________________________________________________
5
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5943 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
35
30
20
25
15
10
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
1.0
5
40
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
SHUTDOWN SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX5943 toc02
SUPPLY VOLTAGE (V)
SHUTDOWN SUPPLY CURRENT (
µ
A)
35
30
20
25
15
10
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
0
5
40
CURRENT-LIMIT/CIRCUIT-BREAKER
THRESHOLD VOLTAGE vs. TEMPERATURE
MAX5943 toc03
TEMPERATURE (°C)
THRESHOLD VOLTAGE (mV)
60
35
10
-15
46.5
47.0
47.5
48.0
48.5
49.0
49.5
50.0
50.5
51.0
51.5
52.0
46.0
-40
85
ILIM = GND
V
IN
= 32V
V
IN
= 12V
V
IN
= 7.5V
CURRENT-LIMIT/CIRCUIT-BREAKER
THRESHOLD VOLTAGE vs. TEMPERATURE
MAX5943 toc04
TEMPERATURE (°C)
THRESHOLD VOLTAGE (mV)
60
35
10
-15
56.5
57.0
57.5
58.0
58.5
59.0
59.5
60.0
60.5
61.0
61.5
62.0
56.0
-40
85
ILIM = IN
V
IN
= 32V
V
IN
= 12V
V
IN
= 7.5V
CURRENT-LIMIT/CIRCUIT-BREAKER
THRESHOLD VOLTAGE vs. TEMPERATURE
MAX5943 toc05
TEMPERATURE (°C)
THRESHOLD VOLTAGE (mV)
60
35
10
-15
36.5
37.0
37.5
38.0
38.5
39.0
39.5
40.0
40.5
41.0
41.5
42.0
36.0
-40
85
ILIM = FLOATING
TIMEOUT PERIOD vs. R
TIM
MAX5943 toc06
R
TIM
(kΩ)
TIMEOUT PERIOD (
µ
s)
100
10
0.1
1
10
100
0.01
1
1000
MAX5943A
MAX5943E
ORing THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX5943 toc07
TEMPERATURE (°C)
ORing THRESHOLD VOLTAGE (mV)
60
35
-15
10
5.0
6.0
7.0
8.0
9.0
10.0
11.0
12.0
4.0
-40
85
5.5
6.5
7.5
8.5
9.5
10.5
11.5
4.5
OR_ADJ = IN
OR_ADJ = OPEN
OR_ADJ = GND
GATE CURRENTS vs. TEMPERATURE
MAX5943 toc08
TEMPERATURE (°C)
GATE CURRENTS (
µ
A)
60
35
10
-15
-40
85
GATE2
44.5
45.0
45.5
46.0
46.5
47.0
44.0
GATE1
GATE1 DRIVE VOLTAGE
vs. TEMPERATURE
MAX5943 toc09
TEMPERATURE (°C)
GATE1 DRIVE VOLTAGE (V)
60
35
10
-15
5.233
5.236
5.239
5.242
5.245
5.248
5.251
5.254
5.257
5.260
5.230
-40
85
Typical Operating Characteristics
(V
IN
= +12V, T
A
= +25°C, unless otherwise noted.)