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| 型号： | LTC3528EDDB#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 12/18页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST SYNC ADJ 1A 8DFN |
| 标准包装： | 2,500 |
| 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 ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WFDFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 8-DFN（3x2） |
LTC3528/LTC3528B
APPLICATIONS INFORMATION
The inductor current ripple is typically set for 20% to
40% of the maximum inductor current. High frequency
ferrite core inductor materials reduce frequency depen-
dent power losses compared to cheaper powdered iron
types, improving efficiency. The inductor should have low
ESR (series resistance of the windings) to reduce the I 2 R
power losses, and must be able to handle the peak induc-
tor current without saturating. Molded chokes and some
chip inductors usually do not have enough core area to
support the peak inductor currents of 1.5A seen on the
LTC3528/LTC3528B. To minimize radiated noise, use a
shielded inductor. See Table 1 for suggested components
and suppliers.
Table 1. Recommended Inductor s
VENDOR PART/STYLE
Coilcraft LPO2506, MSS5131
(847) 639-6400 MSS6122, MOS6020
www.coilcraft.com ME3220, DO1608C
1812PS
Coiltronics SD14, SD18, SD20
SD25, SD52
Sumida CD43
(847) 956-0666 CDC5D23B
www.sumida.com CDRH5D18
CR43
TDK VLP, VLF
VLCF, SLF
Toko D53, D63
(408) 432-8282 D73, D75
www.tokoam.com
extremely low ESR and are available in small footprints.
A 10μF to 22μF output capacitor is sufficient for most ap-
plications. Values larger than 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 LTC3528/LTC3528B
is designed to be stable with output capacitor values of
10μF or greater. Although ceramic capacitors are recom-
mended, low ESR tantalum capacitors may be used as well.
A small ceramic capacitor in parallel with a larger tantalum
capacitor may be used in demanding applications which
have large load transients. Another method of improving the
transient response is to add a small feed-forward capaci-
tor across the top resistor of the feedback divider (from
V OUT to FB). A typical value of 33pF 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 10μF input capacitor is sufficient
for most applications. Larger values may be used without
limitations. Table 2 shows a list of several ceramic capaci-
tor manufacturers. Consult the manufacturers directly for
detailed information on their selection of ceramic parts.
Wurth
(201) 785-8800
www.we-online.com
WE-TPC type M, MH
Table 2. Capacitor Vendor Information
SUPPLIER PHONE
AVX (803) 448-9411
WEBSITE
www.avxcorp.com
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
Murata
Taiyo-Yuden
TDK
(714) 852-2001
(408) 573-4150
(847) 803-6100
www.murata.com
www.t-yuden.com
www.component.tdk.com
3528fd
12
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| LTC3529EDCB#PBF | 制造商:Linear Technology 功能描述:IC SYNC STEP-UP DC/DC CONVERTER DFN-8 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, Cut Tape 1.5A, 2.35MHz Step-Up DC/DC Converter in 2mm x 3mm 制造商:Linear Technology 功能描述:IC, SYNC STEP-UP DC/DC CONVERTER, DFN-8, Primary Input Voltage:5.25V, No. of Outputs:1, Output Voltage:5V, Output Current:500mA, No. of Pins:8, Operating Temperature Min:-40C, Operating Temperature Max:85C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes |
| LTC3529EDCB#TRMPBF | 功能描述:IC REG BOOST SYNC 5V 1.5A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3529EDCB#TRPBF | 功能描述:IC REG BOOST SYNC 5V 1.5A 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LTC3530 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Wide Input Voltage Synchronous Buck-Boost DC/DC Converter |
| LTC3530EDD | 制造商:Linear Technology 功能描述:Conv DC-DC Single Non-Inv/Inv/Step Up/Step Down 1.8V to 5.5V 10-Pin DFN EP |
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