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參數(shù)資料
| 型號： | LTC3563EDC |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 1.75 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封裝： | 2 X 2 MM, PLASTIC, MO-229WCCD-2, DFN-6 |
| 文件頁數(shù)： | 5/16頁 |
| 文件大小： | 276K |
| 代理商： | LTC3563EDC |
LTC3563
13
3563f
With this information we can calculate L using:
L
fI
V
L
OUT
IN
=
1
–
Substituting VOUT = 1.87V, VIN = 4.2V, ΔIL = 200mA and
f = 2.25MHz gives:
L
V
MHz
mA
V
=
=
187
2 25
200
1
187
42
231
.
–
.
.
H
With V
V
L
V
MHz
mA
OUT =
=
128
2 25
200
1
12
.
–
. 8
8
42
198
V
H
.
=
Choosing a vendor’s closest inductor value of 2.2H results
in a maximum ripple current of:
For V
V
I
V
MHz
H
V
OUT
L
=
187
225
22
1
187
.
. .
–
.
4
42
209 6
128
2
.
V
mA
For V
V
I
V
OUT
L
=
2
25
2 2
1
128
42
179 8
MHz
H
V
mA
.
–
.
=
APPLICATIO S I FOR ATIO
WU
UU
Hot Swap is a trademark of Linear Technology Corporation.
CIN will require an RMS current rating of at least
0.25A ILOAD(MAX)/2 at temperature and COUT will require
ESR of less than 0.2Ω. In most cases, ceramic capacitors
will satisfy these requirements. Select COUT = 10F and
CIN = 10F.
Figure 3 shows the complete circuit along with its efciency
curve, load step response and recommended layout.
PC Board Layout Checklist
When laying out the printed circuit board, the following
checklist should be used to ensure proper operation of
the LTC3563. These items are also illustrated graphically
in Figure 3b. Check the following in your layout:
1. The power traces, consisting of the GND trace, the SW
trace and the VIN trace should be kept short, direct and
wide.
2. Does the (+) plate of CIN connect to VIN as closely as
possible? This capacitor provides the AC current to the
internal power MOSFETs.
3. Keep the (–) plates of CIN and COUT as close as possible.
Figure 3a. Typical Application
VIN
LTC3563
RUN
3563 F03
L
CIN
COUT
SW
VIN
2.7V TO 5.5V
VOUT
VSEL
GND
1.28V 1.87V
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| LTC3563EDC#TRMPBF | 功能描述:IC REG BUCK SYNC 0.5A 6DFN 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: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) 供應商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC3563EDC#TRPBF | 功能描述:IC REG BUCK SYNC 0.5A 6DFN 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: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) 供應商設(shè)備封裝:TSOT-23-6 其它名稱:LTC1983ES6-3#TRMTR |
| LTC3564 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:2.25MHz, 1.25A Synchronous Step-Down Regulator |
| LTC3564EDCB#PBF | 制造商:Linear Technology 功能描述:VOLTAGE REGULATOR BUCK 2.25MHZ 1.25A 制造商:Linear Technology 功能描述:VOLTAGE REGULATOR, BUCK, 2.25MHZ, 1.25A, 制造商:Linear Technology 功能描述:VOLTAGE REGULATOR, BUCK, 2.25MHZ, 1.25A, DFN-6, Primary Input Voltage:5.5V, No. of Outputs:1, Output Current:1.25A, No. of Pins:6, Operating Temperature Min:-40C, Operating Temperature Max:125C, MSL:MSL 1 - Unlimited , RoHS Compliant: Yes 制造商:Linear Technology 功能描述:DP-SWREG/Monolithic, Cut Tape 2.25MHz, 1.2A Synchronous Step-Down Regulator in T |
| LTC3564EDCB#TRMPBF | 功能描述:IC REG BUCK SYNC ADJ 1.25A 6DFN 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(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 |
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