- 您现在的位置：买卖IC网 > PDF目录79939 > LTC3634IUFD#PBF (LINEAR TECHNOLOGY CORP) 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PQCC28 PDF资料下载
参数资料
| 型号： | LTC3634IUFD#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 5.5 A DUAL SWITCHING CONTROLLER, 4600 kHz SWITCHING FREQ-MAX, PQCC28 |
| 封装： | 4 X 5 MM, LEAD FREE, PLASTIC, MO-220, QFN-28 |
| 文件页数： | 4/28页 |
| 文件大小： | 359K |
| 代理商： | LTC3634IUFD#PBF |
第1页第2页第3页当前第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页
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
相关PDF资料 |
PDF描述 |
|---|---|
| LTC3618EUF#PBF | 8 A DUAL SWITCHING CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PQCC24 |
| LM336DR-2-5 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 2.49 V, PDSO8 |
| LM4040CIM-4.1X | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PDSO8 |
| LM4040CIM-4.1 | 1-OUTPUT TWO TERM VOLTAGE REFERENCE, 4.096 V, PDSO8 |
| LS5320-9PD7TB1 | 2-OUTPUT 100 W AC-DC PWR FACTOR CORR MODULE |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3634MPFE#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:BUCK, 15V, 3A, 500KHZ-4MHZ, TSSOP-28 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, 15V Dual 3A Monolithic Step Down Regulator for DDR Power |
| LTC3634MPFE#TRPBF | 制造商:Linear Technology 功能描述:IC REG 15V 3A STEP DOWN 28-TSSOP 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:-55C, Operating Temperature Max:150C, MSL:-, Package / Case:28-TSSOP , RoHS Compliant: Yes |
| LTC3634MPUFD#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 |
| LTC3637EDHC#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 1A 16DFN |
| LTC3637EMSE#PBF | 制造商:Linear Technology 功能描述:IC REG BUCK SYNC ADJ 1A 16MSOP |
发布紧急采购，3分钟左右您将得到回复。