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MAX5941ACSE+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
_______________________________________________________________________________________ 7
INRUSH CURRENT CONTROL
(V
IN
= 48V)
MAX5941toc10
V
GATE
5V/div
I
INRUSH
100mA/div
V
OUT
50V/div
P
GOOD
50V/div
2ms/div
INRUSH CURRENT CONTROL
(V
IN
= 67V)
MAX5941toc11
V
GATE
5V/div
I
INRUSH
100mA/div
V
OUT
50V/div
P
GOOD
50V/div
2ms/div
0.999
1.000
1.001
1.002
1.003
-40 0-20 20 40 60 80
V
SS_SHDN
vs. TEMPERATURE
(AT THE END OF SOFT-START)
MAX5941A/B toc12
TEMPERATURE (
°
C)
OPTO = CS = V-
V
SS_SHDN
(V) (NORMALIZED TO V
REF
= 2.4V)
273
274
276
275
277
278
-40 0-20 20 40 60 80
NDRV FREQUENCY
vs. TEMPERATURE
MAX5941A/B toc13
TEMPERATURE (
°
C)
NDRV FREQUENCY (kHz)
V
OPTO
= 4V, CS = V-
80.4
80.6
80.5
80.8
80.7
80.9
81.0
-40 20 40-20 0 60 80
MAXIMUM DUTY CYCLE
vs. TEMPERATURE
MAX5941A/B toc14
TEMPERATURE (
°
C)
MAXIMUM DUTY CYCLE (%)
V
OPTO
= 4V, CS = V-
46.8
47.2
47.0
47.6
47.4
47.8
48.0
-40 20 40-20 0 60 80
MAXIMUM DUTY CYCLE
vs. TEMPERATURE
MAX5941A/B toc15
TEMPERATURE (°C)
MAX DUTY CYCLE (%)
V
OPTO
= 4V, CS = V-
V+ SUPPLY CURRENT
vs. TEMPERATURE
MAX5941A/B toc16
1.38
1.39
1.41
1.40
1.44
1.45
1.43
1.42
1.46
V+ INPUT CURRENT (mA)
-40 0 20-20
40
60 80
TEMPERATURE (°C)
V
OPTO
= 4V, V
DD
= CS = V-
Typical Operating Characteristics (continued)
(V
IN
= (GND - V
EE
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
EE
, V
DD
= 13V, NDRV floating, T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C. All voltages are referenced to V
EE
(for graphs 1–11 in the Typical Operating Characteristics), all
voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.)
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
8 _______________________________________________________________________________________
185
188
187
186
190
189
194
193
192
191
195
-40 -20 0 20 40 60 80
V+ SHUTDOWN CURRENT
vs. TEMPERATURE
MAX5941A/B toc19
TEMPERATURE (
°
C)
V+ SHUTDOWN CURRENT (µA)
V+ = 67V, OPTO = SS_SHDN =
CS = V-, V
DD
= 13V
0.483
0.484
0.486
0.485
0.487
0.488
-40 0-20 20 40 60 80
CS THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX5941A/B toc20
TEMPERATURE (
°
C)
CS THRESHOLD VOLTAGE (V)
V
OPTO
= 4V, V+ = 67V
NDRV RESISTANCE
vs. TEMPERATURE
MAX5941A/B toc21
1.0
1.5
2.5
2.0
4.0
4.5
3.5
3.0
5.0
NDRV RESISTANCE (Ω)
-40 0 20-20
40
60 80
TEMPERATURE (
°
C)
HIGH-SIDE DRIVER
LOW-SIDE DRIVER
170
176
174
172
180
178
188
186
184
182
190
-40 -20 0 20 40 60 80
CURRENT-LIMIT DELAY
vs. TEMPERATURE
MAX5941A/B toc22
TEMPERATURE (
°
C)
CURRENT-LIMIT DELAY (ns)
V
OPTO
= 4V, 100mV OVERDRIVE ON CS
2.400
2.402
2.406
2.404
2.408
2.410
010155 2025303540
V
SS_SHDN
vs. V
DD
MAX5941A/B toc23
V
DD
(V)
V
SS_SHDN
(V)
267.0
268.0
267.5
269.0
268.5
269.5
270.0
270.5
271.0
010155 2025303540
NDRV FREQUENCY vs. V
DD
MAX5941A/B toc24
V
DD
(V)
NDRV FREQUENCY (kHz)
V
OPTO
= 4V, CS = V-
Typical Operating Characteristics (continued)
(V
IN
= (GND - V
EE
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
EE
, V
DD
= 13V, NDRV floating, T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C. All voltages are referenced to V
EE
(for graphs 1–11 in the Typical Operating Characteristics), all
voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.)
4.50
4.65
4.60
4.55
4.75
4.70
4.95
4.90
4.85
4.80
5.00
-40 -20 0 20 40 60 80
SOFT-START SOURCE CURRENT
vs. TEMPERATURE
MAX5941A/B toc17
TEMPERATURE (
°
C)
SOFT-START SOURCE CURRENT (µA)
V+ = 67V, OPTO = V
CC
CS = SS_SHDN = V-
11.00
11.05
11.15
11.10
11.20
11.25
-40 0-20 20 40 60 80
V+ INPUT CURRENT
vs. TEMPERATURE (AFTER STARTUP)
MAX5941A/B toc18
TEMPERATURE (
°
C)
V+ INPUT CURRENT (µA)
V+ = 67V, V
OPTO
= 4V,
CS = V-, V
DD
= 13V
MAX5941A/MAX5941B
IEEE 802.3af-Compliant Power-Over-Ethernet
Interface/PWM Controller for Power Devices
_______________________________________________________________________________________ 9
47.0
47.2
47.1
47.4
47.3
47.6
47.5
47.7
47.9
47.8
48.0
010155 2025303540
MAXIMUM DUTY CYCLE vs. V
DD
MAX5941A/B toc25
V
DD
(V)
MAXIMUM DUTY CYCLE (%)
V
OPTO
= 4V, CS = V-
DRIVER POWERED
FROM V+
DRIVER POWERED
FROM V
DD
9.5
9.6
9.8
9.7
10.0
10.1
9.9
10.2
010155 2025303540
V
CC
vs. V
DD
MAX5941A/B toc26
V
DD
(V)
V
CC
(V)
DEVICE POWERED FROM V
DD
DEVICE POWERED
FROM V+
1.31
1.33
1.32
1.36
1.35
1.34
1.39
1.38
1.37
1.40
04020 60 80 100
V+ SUPPLY CURRENT
vs. V+ VOLTAGE
MAX5941A/B toc27
V+ VOLTAGE (V)
V+ SUPPLY CURRENT (mA)
V
OPTO
= 4V, CS = V
DD
= V-
0
6
4
2
8
10
12
0403010 20 50 60 70 80 90 110
V+ INPUT CURRENT vs. VOLTAGE
(AFTER STARTUP)
MAX5941A/B toc28
V+ VOLTAGE (V)
V+ INPUT CURRENT (µA)
100
V
OPTO
= 4V, CS = V-, V
DD
= 13V
9.0
9.4
9.2
9.8
9.6
10.2
10.0
10.4
V
CC
VOLTAGE vs. V
CC
CURRENT
MAX5941A/B toc29
V
CC
CURRENT (mA)
V
CC
VOLTAGE (V)
0 5 10 15 20
V+ = 67V, OPTO = CS = V-
V
DD
= 36V
V
DD
= 13V
9.0
9.3
9.2
9.1
9.4
9.5
9.6
9.7
9.8
9.9
10.0
0 5 10 15 20
V
CC
VOLTAGE vs. V
CC
CURRENT
MAX5941A/B toc30
V
CC
CURRENT (mA)
V
CC
VOLTAGE (V)
V
DD
= OPTO = CS = V-
V+ = 48V
V+ = 67V
V+ = 36V
V+ = 24V
Typical Operating Characteristics (continued)
(V
IN
= (GND - V
EE
) = 48V, GATE = PGOOD = PGOOD = OUT = OPEN, UVLO = V
EE
, V
DD
= 13V, NDRV floating, T
A
= T
MIN
to T
MAX
.
Typical values are at T
A
= +25°C. All voltages are referenced to V
EE
(for graphs 1–11 in the Typical Operating Characteristics), all
voltages are referenced to V- (for graphs 12–30 in the Typical Operating Characteristics), unless otherwise noted.)
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24

MAX5941ACSE+

Mfr. #:
Buy MAX5941ACSE+
Manufacturer:
Maxim Integrated
Description:
Power Switch ICs - POE / LAN IEEE 802.3af POE Int/PWM Controller
Lifecycle:
New from this manufacturer.
Delivery:
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