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參數(shù)資料
| 型號： | LTC3410BESC6-1.8 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.63 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | PLASTIC, MO-203AB, SC-70, 6 PIN |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 285K |
| 代理商： | LTC3410BESC6-1.8 |
13
LTC3410B
3410bfa
APPLICATIO S I FOR ATIO
WU
UU
Design Example
As a design example, assume the LTC3410B 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 0.3A but most of the time it will be in
standby mode, requiring only 2mA. Efficiency 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
= () ()
1
(3)
Substituting VOUT = 2.5V, VIN = 4.2V, IL = 100mA
and f = 2.25MHz in Equation (3) gives:
L
V
MHz
mA
V
H
=
=
25
2 25
100
1
25
42
45
.
.(
)
.
For best efficiency choose a 300mA or greater inductor
with less than 0.3
series resistance.
CIN will require an RMS current rating of at least 0.125A
ILOAD(MAX)/2 at temperature and COUT will require an ESR
of less than 0.5
. In most cases, a ceramic capacitor will
satisfy this requirement.
For the feedback resistors, choose R1 = 412k. R2 can
then be calculated from equation (2) to be:
R
V
R
k use
OUT
2
08
1 1 875 5
8
=
=
.
. ;
87k
Figure 6 shows the complete circuit along with its
efficiency curve.
Figure 6a
Figure 6b
Figure 6c
VIN
CIN
2.2
F
CER
VIN
2.7V
TO 4.2V
LTC3410B
RUN
3
4.7
H*
10pF
887k
412k
3410 F07a
6
4
1
2, 5
SW
VFB
GND
COUT
2.2
F
CER
VOUT
2.5V
TAIYO YUDEN JMK212BJ225
*MURATA LQH32CN4R7M23
OUTPUT CURRENT (mA)
1
40
EFFICIENCY
(%)
50
60
70
80
10
100
1000
3410 F07b
30
20
10
0
90
100
VIN = 2.7V
VIN = 3.6V
VIN = 4.2V
4
s/DIV
VOUT
100mV/DIV
AC COUPLED
VIN = 3.6V
VOUT = 2.5V
ILOAD = 100mA TO 300mA
ILOAD
200mA/DIV
IL
200mA/DIV
3410 F07c
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3410ESC6 | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 6-Pin SC-70 |
| LTC3410ESC6#PBF | 制造商:Linear Technology 功能描述:BUCK SYNCH 0.3A 2.25MHZ 6S 制造商:Linear Technology 功能描述:BUCK, SYNCH, 0.3A, 2.25MHZ, 6SC70 |
| LTC3410ESC6#TRMPBF | 功能描述:IC REG BUCK SYNC ADJ 0.3A 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:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 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:SOT-23-6 細型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC3410ESC6#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 0.3A 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:500 系列:- 類型:切換式電容器（充電泵），反相 輸出類型:固定 輸出數(shù):1 輸出電壓:-3V 輸入電壓:2.3 V ~ 5.5 V PWM 型:Burst Mode? 頻率 - 開關(guān):900kHz 電流 - 輸出:100mA 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:SOT-23-6 細型，TSOT-23-6 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC3410ESC6-1.2 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:2.25MHz, 300mA Synchronous Step-Down Regulator in SC70 |
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