Datasheet Linear Technology LTC4227CUFD-4#PBF

Manufacturer	Linear Technology
Series	LTC4227
Part Number	LTC4227CUFD-4#PBF

Dual Ideal Diode and Single Hot Swap Controller

Datasheets

PDF, 705 Kb, Revision: A, File uploaded: Oct 25, 2017

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Prices

Packaging

Package	4x5 QFN-20
Package Code	UFD
Package Index	05-08-1711

Parametrics

Number of Channels	2
Demo Boards	DC1625A-A,DC1625A-B,DC1625A-C,DC1625A-D
Design Tools	LTspice Model
Diode Off with Back-to-Back FETs?	no
Export Control	no
Ideal Diode	Dual, External, N-Channel
Internal FET	no
Operating Temperature Range	0 to 70 °C
Supply for FET Gate drive	Internal Charge Pump
Total Quiescent Current	3.3 mA
Typical Current Capability	20 A
Vin Max	18 V
Vin Min	2.9 V

Eco Plan

RoHS

Compliant

Articles

Download
Ideal Diode and Hot Swap Controller Enables Supply Redundancy and Isolates Faults &mdash LT Journal
PDF, 1.6 Mb, File published: Jan 17, 2013
Extract from the document
Ideal Diode and Hot Swap Controller
Enables Supply Redundancy and Isolates Faults
Chew Lye Huat Schottky diodes are used in a variety of ways
to implement multisource power systems.
For instance, high availability electronic
systemsвЂ”such as ВµTCA network and storage
serversвЂ”employ power Schottky diode-OR
circuits in redundant power systems. Diode
ORing is also used in systems with alternate
power sources, such as an AC wall adapter
and a backup battery feed. The problem is that
the Schottky diodes consume power due to
the forward voltage dropвЂ”the resulting heat
must be dissipated with dedicated copper
area on the PCB, or by heat sinks bolted to the
diode, both of which require significant space.
The family of products comprising the
LTC4225, LTC4227 and LTC4228 minimize
power loss by using external N-channel
MOSFETs for pass elements, minimizing the voltage drop from the supply to
the load when the MOSFETs are turned
on. When an input source voltage drops
below the output common supply voltage, the appropriate MOSFET is turned …

Model Line

Series: LTC4227 (24)

LTC4227CGN-1#PBF LTC4227CGN-1#TRPBF LTC4227CGN-2#PBF LTC4227CGN-2#TRPBF LTC4227CUFD-1#PBF LTC4227CUFD-1#TRPBF LTC4227CUFD-2#PBF LTC4227CUFD-2#TRPBF LTC4227CUFD-3#PBF LTC4227CUFD-3#TRPBF LTC4227CUFD-4#PBF LTC4227CUFD-4#TRPBF LTC4227IGN-1#PBF LTC4227IGN-1#TRPBF LTC4227IGN-2#PBF LTC4227IGN-2#TRPBF LTC4227IUFD-1#PBF LTC4227IUFD-1#TRPBF LTC4227IUFD-2#PBF LTC4227IUFD-2#TRPBF LTC4227IUFD-3#PBF LTC4227IUFD-3#TRPBF LTC4227IUFD-4#PBF LTC4227IUFD-4#TRPBF

Manufacturer's Classification

Monitor, Control and Protection > PowerPath Controllers & Ideal Diodes
Monitor, Control and Protection > Hot Swap Controllers > Low Voltage Hot Swap Controllers

Other Names:

LTC4227CUFD-4PBF, LTC4227CUFD-4 PBF, LTC4227CUFD4#PBF, LTC4227CUFD 4#PBF

EMS supplier

Slices

Microcontrollers