Details, datasheet, quote on part number: LTC4417CUFPBF
PartLTC4417CUFPBF
Category
TitleIC OR CTRLR SRC SELECT 24QFN
Description
CompanyLinear Technology Corporation
DatasheetDownload LTC4417CUFPBF datasheet
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LTC4417CUFPBF photo

Others parts numbering
LTC4417IUFPBF
LTC4417IGNPBF: IC OR CTRLR SRC SELECT 24SSOP
LTC4417HUFPBF
LTC4417HGNPBF: IC OR CTRLR SRC SELECT 24SSOP
LTC4417CGNPBF
DC1717A: BOARD DEMO LTC4417

 

Features, Applications
Features

Selects Highest Priority Supply from Three Inputs n Blocks Reverse and Cross Conduction Currents n Wide Operating Voltage Range: 36V n42V Protection Against Reverse Battery Connection n Fast Switchover Minimizes Output Voltage Droop n Low 28A Operating Current n<1A Current Draw from Supplies Less than V OUT n1.5% Input Overvoltage/Undervoltage Protection n Adjustable Overvoltage/Undervoltage Hysteresis n P-Channel MOSFET Gate Protection Clamp n Cascadable for Additional Input Supplies n 24-Lead Narrow SSOP and 4mm QFN Packages

The LTC4417 connects one of three valid power supplies to a common output based on priority. Priority is defined by pin assignment, with V1 assigned the highest priority and V3 the lowest priority. A power supply is defined as valid when its voltage has been within its overvoltage (OV) and undervoltage (UV) window continuously for at least 256ms. If the highest priority valid input falls out of the OV/UV window, the channel is immediately disconnected and the next highest priority valid input is connected to the common output. Two or more LTC4417s can be cascaded to provide switchover between more than three inputs. The LTC4417 incorporates fast non-overlap switching circuitry to prevent both reverse and cross conduction while minimizing output droop. The gate driver includes a 6V clamp to protect external MOSFETs. A controlled output ramp feature minimizes start-up inrush current. Open drain VALID outputs indicate the input supplies have been within their OV/UV window for 256ms.

L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and PowerPath, ThinSOT and Hot Swap are trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.

Applications

Industrial Handheld Instruments High Availability Systems Battery Backup Systems Servers and Computer Peripherals

V1: 12V WALL ADAPTER V2: 14.8V Li-Ion MAIN/SWAPPABLE V3: 12V SLA BACKUP IRF7324 2A OUTPUT IRF7324

Supply Voltages to 42V VOUT, to 42V Voltage from V3 to VOUT.................. to 42V Voltage from to 7.5V Input Voltages EN, SHDN............................................... to 6V HYS.......................................................... to 1V Input Currents UV2, UV3, HYS................ 3mA

Output Voltages to 42V CAS........................................................... to 6V Output Currents VALID3, CAS..............................2mA Operating Ambient Temperature Range to 125C Storage Temperature Range................... to 150C Lead Temperature GN Package (Soldering, 10 sec)......................... 300C

UF PACKAGE 4mm) PLASTIC QFN TJMAX = 4.5C/W EXPOSED PAD (PIN 25) PCB GND CONNECTION OPTIONAL

LEAD FREE FINISH LTC4417IUF#PBF LTC4417HUF#PBF TAPE AND REEL LTC4417IUF#TRPBF LTC4417HUF#TRPBF PART MARKING* LTC4417GN 4417 PACKAGE DESCRIPTION 24-Lead Narrow Plastic SSOP 24-Lead Narrow Plastic SSOP 24-Lead Narrow Plastic SSOP 4mm) Plastic QFN 4mm) Plastic QFN 4mm) Plastic QFN TEMPERATURE RANGE to 125C

Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. Consult LTC Marketing for information on non-standard lead based finish parts. For more information on lead free part marking, go to: http://www.linear.com/leadfree/ For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/

SYMBOL Start-Up to V3,VOUT Operating Supply Range = 2.5V, VOUT = 4V, (Notes = 2.5V, VOUT = 0V, (Notes = 2.5V, VOUT = SHDN = 0V, (Notes = 2.5V, VOUT = 2.5V, VOUT = 2.5V, VOUT = 2.5V, VOUT = 4V, (Note = 2.5V, VOUT = 0V, SHDN = 0V, (Note 3, 4) ILOWER Gate Control VG VG(SOURCE) VG(SINK) VG(OFF) VG(SLEW,ON) VG(SLEW,OFF) IG(DN) RG(OFF) VREV tpG(SHDN) tpG(EN,OFF) tpG(EN,ON) Open (VS VG) Clamp Voltage Sourcing (VS VG) Clamp Voltage Sinking (VS VG) Clamp Voltage to G3 Off (VS VG) Threshold to G3 Pull-Down Slew Rate to G3 Pull-Up Slew Rate to G3 Low Pull-Down Current to G3 OFF Resistance Reverse Voltage Threshold to G3 Turn-Off Delay From SHDN to G3 Turn-Off Delay From to G3 Turn-On Delay From EN VOUT G3 = Open VOUT = 10A VOUT = 2.8V, VOUT to G3 Rising Edge VOUT = 11V, CGATE = 10nF (Note 5) VOUT = 11V, CGATE = 10nF (Note 6) VOUT + 300mV VOUT = 10mA Measure V3) VOUT, VOUT Falling VOUT = 11V, CGATE = 10nF, (Note 7) VOUT = 11V, Falling Edge SHDN 3V, CGATE = 10nF VOUT = 11V, Falling EN Edge 3V, CGATE = 10nF VOUT = 11V, Rising EN Edge 3V, CGATE = 10nF

The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are = 25C. For all tests, = VS3. Unless otherwise noted, V3 = VOUT = 12V, HYS = GND.

IV1-V3,VOUT(EN) Total Supply Current with Channels Enabled IV1-V3(EN) IV1-V3(SHDN) IVOUT IPRIORITY IHIGHEST Total Supply Current with Channels Disabled Total Supply Current When Shutdown VOUT Supply Current from Highest to V3 Priority Input Source (V1) Current from Highest to V3 Voltage Input Source

Current from to V3 Input Voltage Sources Lower than VOUT

 

Some Part number from the same manufacture Linear Technology Corporation
LTC4417IUFPBF
LTC4417IGNPBF
LTC4417HUFPBF
LTC4417HGNPBF
LTC4417CGNPBF
DC1717A
 
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