參數(shù)資料
型號： LTC3634EFE#TRPBF
廠商： LINEAR TECHNOLOGY CORP
元件分類： 穩(wěn)壓器
英文描述： 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PDSO28
封裝： 4.40 MM, LEAD FREE, PLASTIC, TSSOP-28
文件頁數(shù)： 4/28頁
文件大?。?/td> 359K
代理商： LTC3634EFE#TRPBF
LTC3634
12
3634f
applicaTions inForMaTion
A general LTC3634 application circuit is shown in Figure 1.
External component selection is largely driven by the load
requirement and switching frequency. Component selec-
tion typically begins with selecting the feedback resistors
to set the desired output voltage. Next the inductor L and
resistor RT are selected. Once the inductor is chosen, the
input capacitor (CIN) and the output capacitor (COUT) can
be selected. Finally, the loop compensation components
may be selected to stabilize the step-down regulator. The
remaining optional external components can then be se-
lectedforfunctionssuchasloopcompensation,TRACKSS,
VIN, UVLO, and PGOOD.
Programming Switching Frequency
Selection of the switching frequency is a trade-off between
efficiency and component size. High frequency operation
allows the use of smaller inductor and capacitor values.
Operation at lower frequencies improves efficiency by
reducinginternalgatechargelossesbutgenerallyrequires
larger inductance and capacitance values to maintain low
output ripple voltage. Connecting a resistor from the RT
pintoSGNDprogramstheswitchingfrequency(f)between
500kHz and 4MHz according to the following formula:
RRT =
3.2E11
f
where RRT is in Ω and f is in Hz.
RUN1
RUN2
RT
INTVCC
PHMODE
MODE/SYNC
ITH1
ITH2
LTC3634
3634 F01
L1
R2
R1
0.1F
C3
0.01F
0.1F
PGND
SGND
BOOST1
SW1
VON1
VDDQIN
VFB1
BOOST2
SW2
VFB2
VON2
VTTR
VIN1
VIN
3.6V TO 15V
VIN2
L2
RCOMP2
RRT
COUT1
VDDQ
COUT2
VTT
C5
(OPT)
CCOMP2
RCOMP1
CCOMP1
C2
2.2F
C1
C4
(OPT)
VREF
Figure 1. Typical Application Circuit for DDR Memory Supply
相關(guān)PDF資料
PDF描述
LTC3634EFE#PBF 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PDSO28
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LTC3672BEDC-2#PBF 1.1 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8
LTC3707IGN-SYNC 3 A SWITCHING CONTROLLER, 360 kHz SWITCHING FREQ-MAX, PDSO28
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC3634EUFD#PBF 功能描述:IC CONV DDR DDR2 DDR3 28QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3634EUFD#TRPBF 功能描述:IC CONV DDR DDR2 DDR3 28QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 專用型 系列:- 標(biāo)準(zhǔn)包裝:43 系列:- 應(yīng)用:控制器，Intel VR11 輸入電壓:5 V ~ 12 V 輸出數(shù):1 輸出電壓:0.5 V ~ 1.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-QFN（7x7） 包裝:管件
LTC3634HFE#PBF 制造商:Linear Technology 功能描述:IC CONV DDR DDR2 DDR3 28TSSOP 制造商:Linear Technology 功能描述:BUCK 15V 3A 500KHZ-4MHZ TS 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, 15V Dual 3A Monolithic Step Down Regulator for DDR Power 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, TSSOP-28, Primary Input Voltage:15V, No. of Outputs:2, Output Current:3A, No. of Pins:28, Operating Temperature Min:-40C, Operating Temperature Max:150C, MSL:MSL 1 - Unlimited, Package / Case:28-TSSOP , RoHS Compliant: Yes
LTC3634HFE#TRPBF 制造商:Linear Technology 功能描述:IC REG 15V 3A STEP DOWN 28-TSSOP
LTC3634HUFD#PBF 制造商:Linear Technology 功能描述:IC CONV DDR DDR2 DDR3 28-QFN 制造商:Linear Technology 功能描述:BUCK 15V 3A 500KHZ-4MHZ QF 制造商:Linear Technology 功能描述:DC-DC REGULATOR, BUCK, ADJ, QFN-28, Primary Input Voltage:15V, No. of Outputs:2, Output Current:3A, No. of Pins:28, Operating Temperature Min:-40C, Operating Temperature Max:150C, MSL:MSL 1 - Unlimited, Package / Case:28-QFN , RoHS Compliant: Yes
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