參數(shù)資料
型號(hào): LTC3789EGN#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 0.1 A SWITCHING CONTROLLER, 710 kHz SWITCHING FREQ-MAX, PDSO28
封裝: 0.150 INCH, LEAD FREE, PLASTIC, SSOP-28
文件頁數(shù): 28/28頁
文件大小: 486K
代理商: LTC3789EGN#TRPBF
LTC3789
9
3789f
pin FuncTions (SSOP/QFN)
VOUTSNS (Pin 11/Pin 8): VOUT Sense Input to the Buck-
Boost Transition Comparator. Connect this pin to the drain
of the top N-channel MOSFET on the output side.
ILIM (Pin 12/Pin 9): Input/Output Average Current Sense
Range Input. This pin tied to SGND, INTVCC or left floating,
sets the maximum average current sense threshold.
IOSENSE+(Pin13/Pin10):The(+)InputtotheInput/Output
Average Current Sense Amplifier.
IOSENSE–(Pin14/Pin11):The(–)InputtotheInput/Output
Average Current Sense Amplifier.
TRIM (Pin 15/Pin 12): Tie this pin to GND for normal
operation. Do not allow this pin to float.
EXTVCC (Pin 20/Pin 17): External Power Input to an
Internal LDO Connected to INTVCC. This LDO supplies
INTVCC power, bypassing the internal LDO powered from
VIN whenever EXTVCC is higher than 4.8V. See EXTVCC
Connection in the Applications Information section. Do
not exceed 14V on this pin.
INTVCC (Pin 21/Pin 18): Output of the Internal Linear Low
Dropout Regulator. The driver and control circuits are
powered from this voltage source. Must be bypassed to
powergroundwithaminimumof4.7Ftantalum,ceramic,
or other low ESR capacitor.
VIN (Pin 22/Pin 19): Main Supply Pin. A bypass capa-
citor should be tied between this pin and the signal
ground pin.
BG1, BG2 (Pins 23, 19/Pins 20, 16): High Current Gate
Drives for Bottom (Synchronous) N-Channel MOSFETs.
Voltage swing at these pins is from ground to INTVCC.
PGND (Pin 24/Pin 21): Driver Power Ground. Connects
to COUT and RSENSE (–) terminal(s) of CIN.
BOOST1,BOOST2(Pins25,18/Pins22,15):Bootstrapped
Supplies to the Top Side Floating Drivers. Capacitors
are connected between the BOOST and SW pins and
Schottky diodes are tied between the BOOST and INTVCC
pins. Voltage swing at the BOOST pins is from INTVCC to
(VIN + INTVCC).
TG1, TG2 (Pins 26, 17/Pins 23, 14): High Current Gate
Drives for Top N-Channel MOSFETs. These are the outputs
of floating drivers with a voltage swing equal to INTVCC
– 0.5V superimposed on the switch node voltage SW.
SW1, SW2 (Pins 27, 16/Pins 24, 13): Switch Node
Connections to Inductors. Voltage swing at these pins
is from a Schottky diode (external) voltage drop below
ground to VIN.
PGOOD(Pin28/Pin25):Open-DrainLogicOutput.PGOOD
is pulled to ground when the voltage on the VFB pin is not
within ±10% of its regulation window, after the internal
20s power-bad mask timer expires.
相關(guān)PDF資料
PDF描述
LTC3789EUFD#TRPBF 0.1 A SWITCHING CONTROLLER, 710 kHz SWITCHING FREQ-MAX, PQCC28
LTC3789EGN#PBF 0.1 A SWITCHING CONTROLLER, 710 kHz SWITCHING FREQ-MAX, PDSO28
LTC3789IUFD#PBF 0.1 A SWITCHING CONTROLLER, 710 kHz SWITCHING FREQ-MAX, PQCC28
LTC3789IGN#TRPBF 0.1 A SWITCHING CONTROLLER, 710 kHz SWITCHING FREQ-MAX, PDSO28
LTC3803HS6-3#TRPBF 1 A SWITCHING CONTROLLER, 330 kHz SWITCHING FREQ-MAX, PDSO6
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