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| 型号： | LTC1430CN |
| 厂商： | Linear Technology |
| 文件页数： | 14/16页 |
| 文件大小： | 0K |
| 描述： | IC SW REG CNTRLR STEP-DWN 16-DIP |
| 标准包装： | 25 |
| 应用： | 控制器，Intel Pentium? |
| 输入电压： | 4 V ~ 8 V |
| 输出数： | 1 |
| 输出电压： | 3.3V，可调 |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 16-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 16-PDIP |
| 包装： | 管件 |
LTC1430
A PPLICATI
S I FOR ATIO
power inductor will generally be the most massive single
component on the board; it can require a mechanical hold-
down in addition to the solder on its leads, especially if it
is a surface mount type.
The power MOSFETs used require some care to ensure
proper operation and reliability. Depending on the current
levels and required efficiency, the MOSFETs chosen may
be as large as TO-220s or as small as SO-8s. High
efficiency circuits may be able to avoid heat sinking the
power devices, especially with TO-220 type MOSFETs. As
an example, a 90% efficient converter working at a steady
3.3V/10A output will dissipate only (33W/90%) ? 10% =
3.7W. The power MOSFETs generally account for the
majority of the power lost in the converter; even assuming
that they consume 100% of the power used by the
converter, that’s only 3.7W spread over two or three
devices. A typical SO-8 MOSFET with a R ON suitable to
provide 90% efficiency in this design can commonly
dissipate 2W when soldered to an appropriately sized
piece of copper trace on a PC board. Slightly less efficient
or higher output current designs can often get by with
standing a TO-220 MOSFET straight up in an area with
some airflow; such an arrangement can dissipate as much
as 3W without a heat sink. Designs which must work in
high ambient temperatures or which will be routinely
overloaded will generally fare best with a heat sink.
SENSE +
LTC1430
NC
V OUT
R1
FB
R2
SENSE –
NC
LTC1430 ? F12
Figure 12. Using External Resistors to Set Output Voltages
100 ?
5V
4.7 μ F
35V
+
0.1 μ F
V CC
PV CC2
PV CC1
PGND
1 μ F
1N4148
+
TOTAL
880 μ F
(220 μ F
10V × 4)
GND
NC
LTC1430
I MAX
G1
0.1 μ F
M1A*
M1B*
2.7 μ H/15A
NC
FREQSET
I FB
3.3V
SENSE
+
C1
220pF
C C
4700pF
R C
7.5k
C SS
0.01 μ F
SHDN
COMP
SS
GND
G2
FB
SENSE –
PGND
NC
M2*
PGND
+
TOTAL
1980 μ F
(330 μ F
6.3V × 6)
GND
* MOTOROLA MTD20N03HL
LTC1430 ? F11
Figure 11. Typical Schematic Showing Layout Considerations
14
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相关代理商/技术参数 |
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| LTC1430CN8 | 功能描述:IC SW REG CNTRLR STEP-DWN 8-DIP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1430CS | 功能描述:IC SW REG CNTRLR STEP-DWN 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1430CS#PBF | 功能描述:IC SW REG CNTRLR STEP-DWN 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1430CS#TR | 功能描述:IC SW REG CNTRLR STEP-DWN 16SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
| LTC1430CS#TRPBF | 功能描述:IC SW REG CNTRLR STEP-DWN 16SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 专用型 系列:- 标准包装:43 系列:- 应用:控制器，Intel VR11 输入电压:5 V ~ 12 V 输出数:1 输出电压:0.5 V ~ 1.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-VFQFN 裸露焊盘 供应商设备封装:48-QFN（7x7） 包装:管件 |
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