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参数资料
| 型号： | LTC3563EDC |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 1.75 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | 2 X 2 MM, PLASTIC, MO-229WCCD-2, DFN-6 |
| 文件页数： | 5/16页 |
| 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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相关代理商/技术参数 |
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|---|---|
| LTC3563EDC#TRMPBF | 功能描述:IC REG BUCK SYNC 0.5A 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LTC3563EDC#TRPBF | 功能描述:IC REG BUCK SYNC 0.5A 6DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LTC3564 | 制造商:LINER 制造商全称: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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
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