- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98003 > LTC3586EUFE#PBF (LINEAR TECHNOLOGY CORP) 3 A BATTERY CHARGE CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PQCC38 PDF資料下載
參數(shù)資料
| 型號： | LTC3586EUFE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3 A BATTERY CHARGE CONTROLLER, 2700 kHz SWITCHING FREQ-MAX, PQCC38 |
| 封裝： | 4 X 6 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, QFN-38 |
| 文件頁數(shù)： | 22/36頁 |
| 文件大?。?/td> | 317K |
| 代理商： | LTC3586EUFE#PBF |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁
LTC3586/LTC3586-1
29
3586fa
load current. Choose an inductor with a DC current rating
at least 1.5 times larger than the maximum load current to
ensure that the inductor does not saturate during normal
operation. If output short circuit is a possible condition,
the inductor should be rated to handle the maximum peak
current specied for the buck converters.
Different core materials and shapes will change the size/cur-
rent and price/current relationship of an inductor. Toroid
or shielded pot cores in ferrite or Permalloy materials are
small and don’t radiate much energy, but generally cost
more than powdered iron core inductors with similar
electrical characteristics. Inductors that are very thin or
have a very small volume typically have much higher
core and DCR losses, and will not give the best efciency.
The choice of which style inductor to use often depends
more on the price vs size, performance and any radiated
EMI requirements than on what the LTC3586/LTC3586-1
require to operate.
The inductor value also has an effect on Burst Mode
operations. Lower inductor values will cause the Burst
Mode switching frequencies to increase.
Table 5 shows several inductors that work well with the
LTC3586/LTC3586-1’s buck regulators. These inductors of-
fer a good compromise in current rating, DCR and physical
size. Consult each manufacturer for detailed information
on their entire selection of inductors.
Buck Regulator Input/Output Capacitor Selection
Low ESR (equivalent series resistance) MLCC capacitors
should be used at both buck regulator outputs as well as at
each buck regulator input supply (VIN1 and VIN2). Only X5R
or X7R ceramic capacitors should be used because they
retain their capacitance over wider voltage and temperature
ranges than other ceramic types. A 10μF output capaci-
tor is sufcient for most applications. For good transient
response and stability the output capacitor should retain
at least 4μF of capacitance over operating temperature
and bias voltage. Each buck regulator input supply should
be bypassed with a 1μF capacitor. Consult with capacitor
manufacturers for detailed information on their selection
and specications of ceramic capacitors. Many manufac-
turers now offer very thin (<1mm tall) ceramic capacitors
ideal for use in height-restricted designs. Table 6 shows a
list of several ceramic capacitor manufacturers.
APPLICATIONS INFORMATION
Table 5. Recommended Inductors for Buck Regulators
INDUCTOR
TYPE
L
(μH)
MAX
IDC
(A)
MAX
DCR
(Ω)
SIZE IN mm
(L
× W × H) MANUFACTURER
DE2818C
4.7
1.25 0.072* 3.0
× 2.8 × 1.8 Toko
www.toko.com
DE2812C
4.7
1.15 0.13* 3.0
× 2.8 × 1.2
CDRH3D16
4.7
0.9
0.11
4
× 4 × 1.8
Sumida
www.sumida.com
SD3118
4.7
1.3
0.162 3.1
× 3.1 × 1.8 Cooper
www.cooperet.com
SD3112
4.7
0.8
0.246 3.1
× 3.1 × 1.2
LPS3015
4.7
1.1
0.2
3.0
× 3.0 × 1.5 Coilcraft
www.coilcraft.com
*Typical DCR
Table 6. Recommended Ceramic Capacitor Manufacturers
AVX
www/avxcorp.com
Murata
www.murata.com
Taiyo Yuden
www.t-yuden.com
Vishay Siliconix
www.vishay.com
TDK
www.tdk.com
BUCK-BOOST REGULATOR APPLICATIONS SECTION
Buck-Boost Regulator Inductor Selection
Inductor selection criteria for the buck-boost are similar
to those given for the buck switching regulator. The buck-
boost converter is designed to work with inductors in the
range of 1μH to 5μH. For most applications a 2.2μH inductor
will sufce. Choose an inductor with a DC current rating
at least 2 times larger than the maximum load current to
ensure that the inductor does not saturate during normal
operation. If output short circuit is a possible condition,
the inductor should be rated to handle the maximum peak
current specied for the buck-boost converter.
Table 7 shows several inductors that work well with the
LTC3586/LTC3586-1’s buck-boost regulator. These induc-
tors offer a good compromise in current rating, DCR and
physical size. Consult each manufacturer for detailed
information on their entire selection of inductors.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC3586EUFE-1#PBF | BATTERY CHARGE CONTROLLER, PQCC38 |
| LTC3586EUFE-1#TRPBF | BATTERY CHARGE CONTROLLER, PQCC38 |
| LTC3672BEDC-1#PBF | 1.1 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3728LZEUH | 3 A DUAL SWITCHING CONTROLLER, 590 kHz SWITCHING FREQ-MAX, PQCC28 |
| LTC3773EUHF | SWITCHING CONTROLLER, 700 kHz SWITCHING FREQ-MAX, PQCC38 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3586EUFE-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Effi ciency USB Power Manager with Boost, Buck-Boost and Dual Bucks |
| LTC3588-1 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Ultralow Voltage Step-Up Converter |
| LTC3588-2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:400mA Step-Up DC/DC Converter with Maximum Power Point Control and 250mV Start-Up |
| LTC3588-2_10 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Piezoelectric Energy Harvesting Power Supply with 14V Minimum VIN |
| LTC3588EDD-1#PBF | 功能描述:IC ENERGY HARVESTING PSU 10DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 電源管理 - 專用 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 應(yīng)用:熱電冷卻器 電流 - 電源:- 電源電壓:3 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SOIC（0.173"，4.40mm 寬）裸露焊盤 供應(yīng)商設(shè)備封裝:28-TSSOP 裸露焊盤 包裝:管件 產(chǎn)品目錄頁面:1410 (CN2011-ZH PDF) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。