參數(shù)資料
型號(hào): LTC3856IFE#PBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: SWITCHING CONTROLLER, PDSO38
封裝: 4.4 MM, LEAD FREE, PLASTIC, TSSOP-38
文件頁數(shù): 2/40頁
文件大?。?/td> 2222K
代理商: LTC3856IFE#PBF
LTC3856
0
3856f
pin FuncTions (TSSOP/QFN)
INTVCC(Pin29/Pin21): Internal5VRegulatorOutput.The
control circuits are powered from this voltage. Decouple
this pin to PGND with a minimum of 4.7F low ESR tan-
talum or ceramic capacitor.
VIN (Pin 30/Pin 22): Main Input Supply. Decouple this pin
to PGND with a capacitor (0.1F to 1F).
BG1, BG2 (Pins 31, 27/Pins 23, 19): Bottom Gate Driver
Outputs. These pins drive the gates of the bottom N-chan-
nel MOSFETs between INTVCC and PGND.
PGND1, PGND2 (Pins 32, 26) TSSOP Package: Power
Ground Pin. Connect this pin closely to the sources of the
bottom N-channel MOSFETs, the (–) terminal of CVCC and
the (–) terminal of CIN.
BOOST1, BOOST2 (Pins 33, 24/Pins 24, 18): Boosted
Floating Driver Supplies. The (+) terminal of the boot-
strap capacitors connect to these pins. These pins swing
from a diode voltage drop below INTVCC up to VIN +
INTVCC.
SGND/PGND (Exposed Pad Pin 33) QFN Package: Signal
Ground and Power Ground. Connect this pin closely to
the sources of the bottom N-channel MOSFETs, the (–)
terminalofCVCCandthe(–)terminalofCIN.Allsmall-signal
components and compensation components should also
connect to this ground.
TG1, TG2 (Pins 35, 23/Pins 25, 17): Top Gate Driver
Outputs. These are the outputs of floating drivers with
a voltage swing equal to INTVCC superimposed on the
switch nodes voltages.
SW1, SW2 (Pins 36, 22/Pins 26, 16): Switch Node
Connections to Inductors. Voltage swing at these pins
is from a Schottky diode (external) voltage drop below
ground to VIN.
CLKOUT(Pin37/Pin27):Clockoutputwithphasechange-
able by PHASMD to enable usage of multiple LTC3856 ICs
in multiphase systems.
PLLIN (Pin 38/Pin 28): External Synchronization Pin. A
clock on the pin synchronizes the internal oscillator with
the clock on this pin.
SGND(ExposedPadPin39)TSSOPPackage:Theexposed
pad must be soldered to the PCB.
相關(guān)PDF資料
PDF描述
LTC3856EFE#PBF SWITCHING CONTROLLER, PDSO38
LTC3856IUH#TRPBF SWITCHING CONTROLLER, PQCC38
LTC3856EFE#TRPBF SWITCHING CONTROLLER, PDSO38
LTC3860IUH#PBF DUAL SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PQCC32
LTC3862HUH#TRPBF DUAL SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, QCC24
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