ltc4267-3 Linear Technology Corporation, ltc4267-3 Datasheet - Page 6

• Manufacturer Part Number: ltc4267-3
• Description: Power Over Ethernet Ieee 802.3af Pd Interface With Integrated 300khz Switching Regulator
• Manufacturer: Linear Technology Corporation

LTC4267-3
TYPICAL PERFOR A CE CHARACTERISTICS
6
812
808
804
800
796
792
788
330
320
280
270
310
300
290
–50
Oscillator Frequency
vs Supply Voltage
6
Reference Voltage
vs Temperature
P
VCC
–30
6.5
= 8V
–10
V
CC
TEMPERATURE (°C)
SUPPLY VOLTAGE (V)
7
10.0
10
9.6
9.9
9.8
9.7
9.5
9.4
9.3
9.2
9.1
9.0
–50
P
vs Temperature
7.5
30
VCC
–30
50
Shunt Regulator Voltage
8
–10
W
70
TEMPERATURE (°C)
8.5
10
90
42673 G10
U
42673 G13
30
I
110
PVCC
9
50
= 1mA
70
801.0
800.8
800.6
800.4
800.2
800.0
799.8
799.6
799.4
799.2
799.0
330
320
280
270
310
300
290
90
42673 G15
6
0
Reference Voltage
vs Supply Voltage
Oscillator Frequency
vs V
T
P
A
VCC
110
= 25°C
6.5
CC
5
≤ V
Shunt Regulator Current
P
CLAMP1mA
VCC
7
10
SUPPLY VOLTAGE (V)
7.5
15
I
CC
(mA)
8
20
8.5
25
245
215
265
260
255
250
240
235
230
225
220
30
9
42673 G11
42673 G13b
–50
I
vs Temperature
PVCC
P
V
9.5
35
VCC
ITH/RUN
–30
= 8V
Supply Current
–10
= 1.3V
TEMPERATURE (°C)
10.0
330
320
310
300
290
280
270
9.5
9.0
8.5
8.0
7.5
7.0
6.5
6.0
5.0
5.5
10
–50
–50
Oscillator Frequency
vs Temperature
P
Thresholds vs Temperature
V
VCC
30
CC
–30
–30
= 8V
Undervoltage Lockout
50
–10
–10
TEMPERATURE (°C)
TEMPERATURE (°C)
70
10
10
V
V
30
TURNOFF
90
TURNON
42673 G16
30
50
110
50
70
80
90
110
90
42673 G12
42673 G14
42673f
130
110