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參數(shù)資料
| 型號： | LTC3406ABES5#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.3 A SWITCHING REGULATOR, 1800 kHz SWITCHING FREQ-MAX, PDSO5 |
| 封裝： | LEAD FREE, PLASTIC, MO-193, TSOT-23, 5 PIN |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 316K |
| 代理商： | LTC3406ABES5#TR |
LTC3406AB
12
3406abf
Design Example
As a design example, assume the LTC3406AB is used
in a single lithium-ion battery-powered cellular phone
application. The VIN will be operating from a maximum of
4.2V down to about 2.7V. The load current requirement
is a maximum of 0.6A but most of the time it will be in
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
fI
V
L
OUT
IN
= () Δ()
1
(3)
Substituting VOUT = 2.5V, VIN = 4.2V, ΔIL = 240mA and
f = 1.5MHz in Equation (3) gives:
L
V
MHz
mA
V
H
=
=μ
25
1 5
240
1
25
42
281
.
.(
)
.
A 2.2μH inductor works well for this application. For best
efciency choose a 720mA or greater inductor with less
than 0.2Ω series resistance.
CIN will require an RMS current rating of at least 0.3A
ILOAD(MAX)/2 at temperature and COUT will require an ESR
of less than 0.25Ω. In most cases, a ceramic capacitor
will satisfy this requirement.
Figure 3. LTC3406AB Layout Diagram
Figure 4. LTC3406AB Suggested Layout
APPLICATIONS INFORMATION
RUN
LTC3406AB
GND
SW
L1
R2
R1
CFWD
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3406AB F05a
4
5
1
3
+
–
2
VFB
VIN
CIN
+
–
COUT
LTC3406AB
GND
3406AB F06a
PIN 1
VOUT
VIN
VIA TO VOUT
SW
VIA TO VIN
COUT
CIN
L1
R2
CFWD
R1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3406ABES5TRMPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Down 5.5V TSOT23-5 |
| LTC3406ABES5-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT |
| LTC3406AES5#TRMPBF | 功能描述:IC REG BUCK SYNC ADJ TSOT23-5 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)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3406AES5#TRPBF | 功能描述:IC REG BUCK SYNC ADJ TSOT23-5 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: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(yīng)商設(shè)備封裝:8-SOIC |
| LTC3406AES5-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:1.5MHz, 600mA Synchronous Step-Down Regulator in ThinSOT |
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