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参数资料
| 型号： | LT3467AIDDB#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | 3 X 2 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, MO-229WECD-1, DFN-8 |
| 文件页数： | 18/18页 |
| 文件大小： | 266K |
| 代理商： | LT3467AIDDB#PBF |
LT3467/LT3467A
9
3467afe
APPLICATIONS INFORMATION
VOUT
200mV/DIV
AC COUPLED
IL1
5A/DIV
AC COUPLED
LOAD CURRENT
100mA/DIV
AC COUPLED
20μs/DIV
3467 F03
Figure 3. Transient Response of Figure 8’s Step-Up
Converter without Phase Lead Capacitor
VOUT
200mV/DIV
AC COUPLED
IL1
5A/DIV
AC COUPLED
LOAD CURRENT
100mA/DIV
AC COUPLED
20μs/DIV
3467 F04
Figure 4. Transient Response of Figure 8’s Step-Up
Converter with a 22pF Phase Lead Capacitor
Setting Output Voltage
To set the output voltage, select the values of R1 and R2
(see Figure 2) according to the following equation.
R1
=R2
VOUT
1.255V
–1
A good value for R2 is 13.3k which sets the current in the
resistor divider chain to 1.255V/13.3k = 94μA.
Layout Hints
The high speed operation of the LT3467/LT3467A demands
careful attention to board layout. You will not get adver-
tised performance with careless layout. Figure 5a shows
the recommended component placement for the ThinSOT
package. Figure 5b shows the recommended component
placement for the DFN package. Note the vias under the
Exposed Pad. These should connect to a local ground
plane for better thermal performance.
R2
R1
GND
C2
C3
L1
D1
C1
VOUT
VIN
SHDN
3467 F05a
FB
CSS
SS
1
2
3
6
5
4
Figure 5a. Suggested Layout—ThinSOT
R2
R1
GND
C2
C1
L1
D1
VOUT
3467 F05b
C3
FB
CSS
VIN
1
2
3
4
8
7
6
5
SHDN
Figure 5b. Suggested Layout—DFN
相关PDF资料 |
PDF描述 |
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| LT3467AIDDB | 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8 |
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| LT3467IS6#TR | 2.5 A SWITCHING REGULATOR, 1600 kHz SWITCHING FREQ-MAX, PDSO6 |
| LT3467AIDDB#TRM | 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO8 |
| LT3467AIS67#TRM | 2.5 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO6 |
相关代理商/技术参数 |
参数描述 |
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| LT3467AIS6#TRPBF | 功能描述:IC REG BOOST ADJ 1.1A TSOT23-6 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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