参数资料
型号: LTC3526BEDC#TRMPBF
厂商: Linear Technology
文件页数: 11/16页
文件大小: 0K
描述: IC REG BOOST SYNC ADJ 0.5A 6DFN
标准包装: 500
类型: 升压(升压)
输出类型: 可调式
输出数: 1
输出电压: 1.6 V ~ 5.25 V
输入电压: 0.5 V ~ 5 V
PWM 型: 电流模式,Burst Mode?
频率 - 开关: 1MHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 6-DFN-EP(2x2)
LTC3526/LTC3526B
APPLICATIONS INFORMATION
inductor current without saturating. Molded chokes and
some chip inductors usually do not have enough core
area to support the peak inductor currents of 700mA
seen on the LTC3526/LTC3526B. To minimize radiated
noise, use a shielded inductor. See Table 1 for suggested
components and suppliers.
Table 1. Recommended Inductors
VENDOR PART/STYLE
Coilcraft LPO4815
(847) 639-6400 LPS4012, LPS4018
www.coilcraft.com MSS5131
MSS4020
MOS6020
ME3220
DS1605, DO1608
Coiltronics SD10, SD12, SD14, SD18, SD20,
www.cooperet.com SD52, SD3114, SD3118
FDK MIP3226D4R7M, MIP3226D3R3M
(408) 432-8331 MIPF2520D4R7
www.fdk.com MIPWT3226D3R0
Output and Input Capacitor Selection
Low ESR (equivalent series resistance) capacitors should
be used to minimize the output voltage ripple. Multilayer
ceramic capacitors are an excellent choice as they have
extremely low ESR and are available in small footprints.
A 4.7μF to 10μF output capacitor is sufficient for most
applications. Larger values up to 22μF may be used to
obtain extremely low output voltage ripple and improve
transient response. X5R and X7R dielectric materials are
preferred for their ability to maintain capacitance over
wide voltage and temperature ranges. Y5V types should
not be used.
The internal loop compensation of the LTC3526 is designed
to be stable with output capacitor values of 4.7μF or greater
(without the need for any external series resistor). Although
ceramic capacitors are recommended, low ESR tantalum
capacitors may be used as well.
Murata
(714) 852-2001
www.murata.com
Sumida
(847) 956-0666
www.sumida.com
Taiyo-Yuden
www.t-yuden.com
TDK
(847) 803-6100
www.component.tdk.com
Toko
(408) 432-8282
www.tokoam.com
Würth
(201) 785-8800
www.we-online.com
LQH43C
LQH32C (-53 series)
301015
CDRH5D18
CDRH2D14
CDRH3D16
CDRH3D11
CR43
CMD4D06-4R7MC
CMD4D06-3R3MC
NP03SB
NR3015T
NR3012T
VLP
VLF, VLCF
D412C
D518LC
D52LC
D62LCB
WE-TPC type S, M
A small ceramic capacitor in parallel with a larger tantalum
capacitor may be used in demanding applications that have
large load transients. Another method of improving the
transient response is to add a small feed-forward capacitor
across the top resistor of the feedback divider (from V OUT
to FB). A typical value of 22pF will generally suffice.
Low ESR input capacitors reduce input switching noise
and reduce the peak current drawn from the battery. It
follows that ceramic capacitors are also a good choice
for input decoupling and should be located as close as
possible to the device. A 2.2μF input capacitor is sufficient
for most applications, although larger values may be
used without limitations. Table 2 shows a list of several
ceramic capacitor manufacturers. Consult the manufactur-
ers directly for detailed information on their selection of
ceramic capacitors.
Table 2. Capacitor Vendor Information
SUPPLIER
AVX
Murata
Taiyo-Yuden
TDK
Samsung
PHONE
(803) 448-9411
(714) 852-2001
(408) 573-4150
(847) 803-6100
(408) 544-5200
WEBSITE
www.avxcorp.com
www.murata.com
www.t-yuden.com
www.component.tdk.com
www.sem.samsung.com
3526bfd
  
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