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| 型号： | TPS40022PWPR |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 0.01 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | POWERPAD, PLASTIC, HTSSOP-16 |
| 文件页数： | 7/29页 |
| 文件大小： | 337K |
| 代理商： | TPS40022PWPR |
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TPS40020
TPS40021
TPS40022
SLUS535 – MARCH 2003
www.ti.com
15
APPLICATION INFORMATION
PowerPAD
t Package
The PowerPAD package provides low thermal impedance for heat removal from the device. The PowerPAD
derives its name and low thermal impedance from the large bonding pad on the bottom of the device. The circuit
board must have an area of solder-tinned-copper underneath the package. The dimensions of this area
depends on the size of the PowerPAD package. For a 16-pin TSSOP (PWP) package the area is
5 mm x 3.4 mm [3].
Thermal vias connect this area to internal or external copper planes and should have a drill diameter sufficiently
small so that the via hole is effectively plugged when the barrel of the via is plated with copper. This plug is
needed to prevent wicking the solder away from the interface between the package body and the solder-tinned
area under the device during solder reflow. Drill diameters of 0.33 mm (13 mils) works well when 1-oz copper
is plated at the surface of the board while simultaneously plating the barrel of the via. If the thermal vias are
not plugged when the copper plating is performed, then a solder mask material should be used to cap the vias
with a diameter equal to the via diameter of 0.1 mm minimum. This capping prevents the solder from being
wicked through the thermal vias and potentially creating a solder void under the package. Refer to PowerPAD
Thermally Enhanced Package[3] for more information on the PowerPAD package.
Thermal Pad
6,60 mm
6,20 mm
4,50 mm
4,30 mm
10
1
X: Minimum PowerPAD = 1.8 mm
X
Y: Minimum PowerPAD = 1.4 mm
Y
Figure 8. PowerPAD Dimensions
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相关代理商/技术参数 |
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| TPS40040 | 制造商:TI 制造商全称:Texas Instruments 功能描述:LOW PIN COUNT, LOW VIN (2.5 V TO 5.5 V) SYNCHRONOUS BUCK DC-TO-DC CONTROLLER WITH ENABLE |
| TPS40040DRBR | 功能描述:DC/DC 开关控制器 Lo Vin Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40040DRBRG4 | 功能描述:DC/DC 开关控制器 Lo Vin Synch Buck DC/DC Cntrlr RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40040DRBT | 功能描述:DC/DC 开关控制器 Low Vin Synch Buck DC/DC Controller RoHS:否 制造商:Texas Instruments 输入电压:6 V to 100 V 开关频率: 输出电压:1.215 V to 80 V 输出电流:3.5 A 输出端数量:1 最大工作温度:+ 125 C 安装风格: 封装 / 箱体:CPAK |
| TPS40040DRBT | 制造商:Texas Instruments 功能描述:Peak Reflow Compatible (260 C):Yes |
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