LTC4278
42
4278fc
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 l FAX: (408) 434-0507 l www.linear.com
LINEAR TECHNOLOGY CORPORATION 2009
LT 0412 REV C PRINTED IN USA
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
LT1952
Single Switch Synchronous Forward Counter
Synchronous Controller, Programmable Volt-Sec Clamp, Low Start Current
LTC3803-3
Current Mode Flyback DC/DC Controller in ThinSOTTM
300kHz Constant-Frequency, Adjustable Slope Compensation, Optimized
for High Input Voltage Applications
LTC3805
Adjustable Frequency Current Mode Flyback Controller Slope Comp, Overcurrent Protect, Internal/External Clock
LTC3825
Isolated No-Opto Synchronous Flyback Controller with
Wide Input Supply Range
Adjustable Switching Frequency, Programmable Undervoltage Lockout,
Accurate Regulation without Trim, Synchronous for High Efficiency
LTC4257-1
IEEE 802.3af PD Interface Controller
100V 400mA Internal Switch, Programmable Classification, Dual
Current Limit
LTC4258
Quad IEEE 802.3af Power over Ethernet Controller
DC Disconnect Only, IEEE-Compliant PD Detection and Classification,
Autonomous Operation or I2C Control
LTC4259A-1
Quad IEEE 802.3af Power over Ethernet Controller
AC or DC Disconnect, IEEE-Compliant PD Detection and Classification,
Autonomous Operation
LTC4263
Single IEEE 802.3af Power over Ethernet Controller
AC or DC Disconnect, IEEE-Compliant PD Detection and Classification,
Autonomous Operation or I2C Control
LTC4263-1
High Power Single PSE Controller
Internal Switch, Autonomous Operation, 30W
LTC4264
High Power PD Interface Controller with 750mA
Current Limit
750mA Internal Switch, Programmable Classification Current to 75mA,
Precision Dual Current Limit with Disable.
LTC4265
IEEE 802.3at High Power PD Interface Controller with
2-Event Classification
2-Event Classification Recognition, 100mA Inrush Current, Single-Class
Programming Resistor, Full Compliance to 802.3at
LTC4266
IEEE 802.3at Quad PSE Controller
Supports IEEE 802.3at Type 1 and Type 2 PDs, 0.34Ω Channel Resistance,
Advanced Power Management, High Reliability 4-Point PD Detection,
Legacy Capacitance Detect
LTC4267-1
IEEE 802.3af PD Interface with an Integrated
Switching Regulator
100V 400mA Internal Switch, Programmable Classification, 200kHz
Constant-Frequency PWM, Optimized for IEEE-Compliant PD System
LTC4267-3
IEEE 802.3af PD Interface with an Integrated
Switching Regulator
100V 400mA Internal Switch, Programmable Classification, 300kHz
Constant-Frequency PWM, Optimized for IEEE-Compliant PD System
LTC4269-1
IEEE 802.3af/IEEE 802.3at PD with Synchronous
No-Opto Flyback Controller
2-Event Classification Recognition, 92% Power Supply Efficiency, Flexible
Aux Support, Superior EMI
LTC4269-2
IEEE 802.3af/IEEE 802.3at PD with Synchronous
Forward Controller
2-Event Classification Recognition, 94% Power Supply Efficiency, Flexible
Aux Support, Superior EMI