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参数资料
| 型号： | LTC3410ESC6-1.2 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 0.63 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
| 封装： | PLASTIC, MO-203AB, SC-70, 6 PIN |
| 文件页数： | 4/16页 |
| 文件大小： | 326K |
| 代理商： | LTC3410ESC6-1.2 |
12
LTC3410
3410fb
APPLICATIO S I FOR ATIO
WU
UU
Figure 4a. LTC3410 Layout Diagram
Figure 5a. LTC3410 Suggested Layout
RUN
LTC3410
GND
SW
L1
R2
R1
CFWD
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3410 F04a
4
6
5
1
3
+
–
2
VFB
VIN
CIN
COUT
RUN
LTC3410-1.875
GND
SW
L1
BOLD LINES INDICATE HIGH CURRENT PATHS
VIN
VOUT
3410 F04b
4
6
5
1
3
+
–
2
VOUT
VIN
CIN
COUT
2. Does the VFB pin connect directly to the feedback
resistors? The resistive divider R1/R2 must be con-
nected between the (+) plate of COUT and ground.
3. Does the (+) plate of CIN connect to VIN as closely as
possible? This capacitor provides the AC current to the
internal power MOSFETs.
4. Keep the (–) plates of CIN and COUT as close as possible.
5. Keep the switching node, SW, away from the sensitive
VFB node.
Figure 4b. LTC3410-1.875 Layout Diagram
LTC3410
GND
3410 F05a
PIN 1
VOUT
VIN
VIA TO VOUT
SW
VIA TO VIN
VIA TO GND
COUT
CIN
L1
R2
CFWD
R1
LTC3410-
1.875
3410 F05b
PIN 1
VOUT
VIN
SW
VIA TO VIN
COUT
CIN
L1
Figure 5b. LTC3410 Fixed Output Voltage
Suggested Layout
Design Example
As a design example, assume the LTC3410 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
3V. With this information we can calculate L using
Equation (1),
L
fI
V
L
OUT
IN
= () ()
1
13
()
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| LTC3411AEDD#PBF | 功能描述:IC REG BUCK SYNC ADJ 1.25A 10DFN 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:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 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:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
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