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參數(shù)資料
| 型號(hào)： | LTC3525DESC6-3.3#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.45 A SWITCHING REGULATOR, PDSO6 |
| 封裝： | LEAD FREE, PLASTIC, MO-203AB, EIAJ, SC-70, 6 PIN |
| 文件頁(yè)數(shù)： | 11/12頁(yè) |
| 文件大小： | 477K |
| 代理商： | LTC3525DESC6-3.3#PBF |
LTC3525D-3.3
8
3525d33fa
Component Selection
Inductor values between 4.7H and 15H are recom-
mended. In most applications 10H will yield the best
compromise between size and efficiency. The inductor
should be a low loss ferrite design and must be rated
for peak currents of at least 400mA without saturating.
InductorswithlowerDCresistancewillimproveefficiency.
Note that the inductor value does not have a significant
effect on ripple current, so while lower values will increase
the operating frequency, they do not reduce output volt-
age ripple.
Some recommended inductor examples are Murata
LQH32C, Coilcraft LPO4812, LPO3310, DO3314, DS1608
and MSS4020, Sumida CDRH2D14 and Taiyo Yuden
NR3015T.
A ceramic input bypass capacitor should be located as
close as possible to the VIN and GND pins of the IC. A
minimum value of 1F is recommended. If the battery is
more than a few inches away, a bulk tantalum decoupling
cap of at least 10F is recommended on VIN.
Theoutputcapacitorshouldalsobeaceramic,locatedclose
to the VOUT and GND pins. A minimum value of 10F is
recommended.Increasingthevalueoftheoutputcapacitor
to 22F will result in lower output ripple. Higher capacitor
values will only offer a small reduction in output ripple,
while reducing light load efficiency by causing the peak
inductor current to increase above its minimum value of
150mA. The input and output capacitors should be X5R
or X7R types, not Y5V.
Figure 3. Recommended Component Placement
Table 1. Inductor Vendor Information
SUPPLIER
PHONE
FAX
WEBSITE
Murata
USA: (814) 237-1431
USA: (814) 238-0490
www.murata.com
Coilcraft
(847) 639-6400
(847) 639-1469
www.coilcraft.com
Sumida
USA: (847) 956-0666
USA: (847) 956-0702
www.sumida.com
Taiyo Yuden
(408) 573-4150
(408) 573-4159
www.t-yuden.com
Table 2. Capacitor Vendor Information
SUPPLIER
PHONE
FAX
WEBSITE
Murata
USA: (814) 237-1431
USA: (814) 238-0490
www.murata.com
Taiyo Yuden
(408) 573-4150
(408) 573-4159
www.t-yuden.com
TDK
(847) 803-6100
(847) 803-6296
www.component.tdk.com
AVX
(803) 448-9411
(803) 448-1943
www.avxcorp.com
SHDN
GND
VIN
SW
GND
VOUT
LTC3525D-3.3
SHDN
VIN
3525d33 F03
VOUT
OPERATION
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| LTC3525ESC6-3 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:400mA Micropower Synchronous Step-Up DC/DC Converter with Output Disconnect |
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| LTC3525ESC6-3#TRMPBF | 功能描述:IC REG BOOST SYNC 3V 0.4A SC70-6 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 標(biāo)準(zhǔn)包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關(guān):2MHz 電流 - 輸出:500mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:6-UFDFN 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
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