Typical operating characteristics – Rainbow Electronics MAX5969B User Manual
Page 5
IEEE 802.3af/at-Compliant, Powered Device Interface
Controllers with
Integrated Power MOSFET
MAX5969A/MAX5969B
_______________________________________________________________________________________ 5
Typical Operating Characteristics
(V
IN
= (V
DD
- V
SS
) = 54V, R
DET
= 24.9kω, R
CLS
= 615ω. RTN, WAD, PG, and 2EC unconnected; all voltages are referenced to V
SS.
)
DETECTION CURRENT
vs. INPUT VOLTAGE
MAX5969A toc01
V
IN
(V)
I
IN
(mA)
8
6
4
2
0.1
0.2
0.3
0.4
0.5
0
0
10
I
IN
= I
VDD
+ I
DET
R
DET
= 24.9kI
RTN = 2EC = PG = WAD = V
DD
-40°C P T
A
P +85NC
SIGNATURE RESISTANCE
vs. INPUT VOLTAGE
R
SIGNATURE
(k
I
)
8
6
4
2
24.5
25.0
25.5
26.0
24.0
0
10
MAX5969A toc02
V
IN
(V)
I
IN
= I
VDD
+ I
DET
R
DET
= 24.9kI
RTN = 2EC = PG = WAD = V
DD
T
A
= -40NC
T
A
= +85NC
T
A
= +25NC
INPUT OFFSET CURRENT
vs. INPUT VOLTAGE
INPUT OFFSET CURRENT (µA)
8
6
4
2
-2
0
2
4
-4
0
10
MAX5969A toc03
V
IN
(V)
T
A
= +85NC
T
A
= -40NC
T
A
= +25NC
CLASSIFICATION CURRENT vs.
INPUT VOLTAGE
MAX5969A toc04
V
IN
(V)
I
IN
(mA)
25
20
15
10
5
10
20
30
40
50
60
70
0
0
30
CLASS 5
CLASS 4
CLASS 3
CLASS 2
CLASS 1
CLASS 0
CLASSIFICATION SETTLING TIME
MAX5969A toc05
V
IN
10V/div
I
IN
200mA/div
0V
0A
V
CLS
1V/div
100µs/div
R
CLS
= 30.9I
2EC SINK CURRENT vs. 2EC VOLTAGE
V
2EC
(V)
I
2EC
(mA)
50
40
30
20
10
0.4
0.8
1.2
1.6
2.0
0
0
60
MAX5969A toc06
V
SS
UNCONNECTED
V
2EC
REFERENCED TO RTN
V
WAD
= 14V
T
A
= -40NC
T
A
= +85NC
T
A
= +25NC
PG SINK CURRENT vs. PG VOLTAGE
V
PG
(V)
I
PG
(µA)
50
40
30
20
10
100
150
200
250
300
50
0
60
MAX5969A toc07
T
A
= -40NC
T
A
= +85NC
T
A
= +25NC
INRUSH CURRENT LIMIT
vs. RTN VOLTAGE
MAX5969A toc08
V
RTN
(V)
INRUSH CURRENT LIMIT (mA)
50
40
30
20
10
70
90
110
130
150
50
0
60
NORMAL OPERATION CURRENT LIMIT
vs. RTN VOLTAGE
MAX5969A toc09
V
RTN
(V)
CURRENT LIMIT (mA)
50
40
10
20
30
200
300
400
500
600
700
800
900
100
0
60