ltc4267-3 Linear Technology Corporation, ltc4267-3 Datasheet - Page 32

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

RELATED PARTS
PART NUMBER
LTC3803-3
LTC3825
LTC4257
LTC4257-1
LTC4258
LTC4259A-1
LTC4263
LTC4263-1
LTC4264
LTC4267-1
ThinSOT is a trademark of Linear Technology Corporation.
LTC4267-3
TYPICAL APPLICATION
32
SPARE PAIR
DATA PAIR
FROM
FROM
–48V
–48V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
*100µF CERAMIC + 470µF TANTALUM
DESCRIPTION
Current Mode Flyback DC/DC Controller in ThinSOT™ 300kHz Constant-Frequency, Adjustable Slope Compensation, Optimized for
Isolate No-Opto Synchronous Flyback Controller with
Wide Input Supply Range
IEEE 802.3af PD Interface Controller
IEEE 802.3af PD Interface Controller
Quad IEEE 802.3af Power over Ethernet Controller
Quad IEEE 802.3af Power over Ethernet Controller
Single IEEE 802.3af Power over Ethernet Controller
High Power Single PSE Controller with Internal Switch 30W PSE Output Power, Internal MOSFET with Thermal Protection
High Power PD Interface Controller
IEEE 802.3af PD Interface with an Integrated
Switching Regulator
(8 PLACES)
B1100
●
FAX: [phone]
0.1µF
High-Effi ciency Class 3 PD with 3.3V Isolated Power Supply
45.3Ω
SMAJ58A
1%
●
www.linear.com
MMSD4148
V
R
SIGDISA
V
PORTP
CLASS
PORTN
P
12µF
100V
OUT
LTC4267-3
4.7µH
I
PGND
PWRGD
TH
NGATE
SENSE
/RUN
P
VCC
V
FB
2.2µF
100V
COMMENTS
High Input Voltage Applications
Adjustable Switching Frequency, Programmable Undervoltage Lockout,
Accurate Regulation without Trim, Synchronous for High Effi ciency
100V 400mA Internal Switch, Programmable Classifi cation
100V 400mA Internal Switch, Programmable Classifi cation Dual Current Limit
Autonomous Operation or I
Autonomous Operation or I
Autonomous Operation or I
750mA Internal Switch, Programmable Classifi cation, Complementary Power
Good Outputs
100V 400mA Internal Switch, Programmable Classifi cation, 200kHz Constant-
Frequency PWM, Interface and Switcher Optimized for IEEE-Compliant PD
System
DC Disconnect Only, IEEE-Compliant PD Detection and Classifi cation,
AC or DC Disconnect IEEE-Compliant PD Detection and Classifi cation,
AC or DC Disconnect IEEE-Compliant PD Detection and Classifi cation,
MMSD4148
P
VCC
100k
220k
9.1V
10k
10k
4.7µF
MMTBA42
BAS516
220k
P
VCC
0.068Ω
2N7002
1%
BAS516
BAS516
330Ω
Si3440
2
2
2
C Control
C Control
C Control
150pF
6.8k
P
VCC
510Ω
PS2911
© LINEAR TECHNOLOGY CORPORATION 2007
•
•
PA1136
PULSE
“Y” CAP
250VAC
2200pF
TLV431
•
SBM1040
10Ω
570µF*
33nF
470pF
LT 0707 • PRINTED IN USA
500Ω
100k
1%
60.4k
1%
CHASSIS
42673 TA04
3.3V
2.6A
42673f