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參數(shù)資料
| 型號： | LTC3560IS6#TRPBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 2.1 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 1 MM HEIGHT, LEAD FREE, PLASTIC, MO-193, TSOT-23, 6 PIN |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 256K |
| 代理商： | LTC3560IS6#TRPBF |
LTC3560
12
3560fb
standby mode, requiring only 2mA. Efciency at both
low and high load currents is important. Output voltage
is 2.5V. With this information we can calculate L using
equation (1),
L
=
1
f
() I
L
()
VOUT 1
VOUT
VIN
(3)
Substituting VOUT = 2.5V, VIN = 4.2V, ΔIL = 320mA and
f = 2.25MHz in equation (3) gives:
L
=
2.5V
2.25MHz(320mA)
1
2.5V
4.2V
1.4
μH
A 1.5μH inductor works well for this application. For best
efciency choose a 960mA or greater inductor with less
than 0.2Ω series resistance.
APPLICATIONS INFORMATION
CIN will require an RMS current rating of at least 0.4A
ILOAD(MAX)/2 at temperature and COUT will require an ESR
of less than 0.1Ω. In most cases, a ceramic capacitor will
satisfy this requirement.
For the feedback resistors, choose R1 = 309k. R2 can
then be calculated from equation (2) to be:
R2
=
VOUT
0.6
1 R1
= 978.5k; use 976k
Figure 6 shows the complete circuit along with its ef-
ciency curve.
Figure 4. LTC3560 Layout Diagram
Figure 5. LTC3560 Suggested Layout
RUN
LTC3560
GND
SW
6
L1
R2
R1
CFWD
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3560 F04
4
5
1
3
+
–
2
SYNC/MODE
VFB
VIN
CIN
COUT
LTC3560
GND
3560 F05
PIN 1
VOUT
VIN
VIA TO VOUT
SW
VIA TO VIN
VIA TO GND
COUT
CIN
L1
R2
CFWD
R1
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LTC3561 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A, 4MHz, Synchronous Step-Down DC/DC Converter |
| LTC3561A | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A, 4MHz, Synchronous Step-Down DC/DC Converter |
| LTC3561AEDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 1A 8DFN 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:- 標準包裝: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) 供應商設備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3561AEDD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 1A 8DFN 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:- 標準包裝:2,500 系列:- 類型:升壓（升壓） 輸出類型:可調(diào)式 輸出數(shù):1 輸出電壓:1.24 V ~ 30 V 輸入電壓:1.5 V ~ 12 V PWM 型:電流模式，混合 頻率 - 開關(guān):600kHz 電流 - 輸出:500mA 同步整流器:無 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 包裝:帶卷 (TR) 供應商設備封裝:8-SOIC |
| LTC3561AEDD-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1A, 4MHz, Synchronous Step-Down DC/DC Converter |
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