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| 型号： | TLC073ID |
| 厂商： | Texas Instruments, Inc. |
| 英文描述： | FAMILY OF WIDE-BANDWIDTH HIGH-OUTPUT-DRIVE SINGLE SUPPLY OPERATIONAL AMPLIFIERS |
| 中文描述： | 家庭具有宽带高输出驱动单电源运算放大器 |
| 文件页数： | 23/50页 |
| 文件大小： | 1454K |
| 代理商： | TLC073ID |
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SLOS219D JUNE 1999 REVISED FEBRUARY 2004
23
POST OFFICE BOX 14WWW.TI.COM
HOUSTON, TEXAS 772511443
APPLICATION INFORMATION
general PowerPAD design considerations (continued)
1.
Prepare the PCB with a top side etch pattern as shown in Figure 53. There should be etch for the leads as
well as etch for the thermal pad.
2.
Place five holes (dual) or nine holes (quad) in the area of the thermal pad. These holes should be 13 mils
in diameter. Keep them small so that solder wicking through the holes is not a problem during reflow.
3.
Additional vias may be placed anywhere along the thermal plane outside of the thermal pad area. This helps
dissipate the heat generated by the TLC07x IC. These additional vias may be larger than the 13-mil
diameter vias directly under the thermal pad. They can be larger because they are not in the thermal pad
area to be soldered so that wicking is not a problem.
4.
Connect all holes to the internal ground plane.
5.
When connecting these holes to the ground plane, do
not use the typical web or spoke via connection
methodology. Web connections have a high thermal resistance connection that is useful for slowing the heat
transfer during soldering operations. This makes the soldering of vias that have plane connections easier.
In this application, however, low thermal resistance is desired for the most efficient heat transfer. Therefore,
the holes under the TLC07x PowerPAD package should make their connection to the internal ground plane
with a complete connection around the entire circumference of the plated-through hole.
6.
The top-side solder mask should leave the terminals of the package and the thermal pad area with its five
holes (dual) or nine holes (quad) exposed. The bottom-side solder mask should cover the five or nine holes
of the thermal pad area. This prevents solder from being pulled away from the thermal pad area during the
reflow process.
7.
Apply solder paste to the exposed thermal pad area and all of the IC terminals.
8.
With these preparatory steps in place, the TLC07x IC is simply placed in position and run through the solder
reflow operation as any standard surface-mount component. This results in a part that is properly installed.
For a given
θ
JA
, the maximum power dissipation is shown in Figure 54 and is calculated by the following formula:
PD
TMAX–TA
JA
Where:
P
D
T
MAX
= Absolute maximum junction temperature (150
°
C)
T
A
= Free-ambient air temperature (
°
C)
θ
JA
=
θ
JC
+
θ
CA
θ
JC
= Thermal coefficient from junction to case
θ
CA
= Thermal coefficient from case to ambient air (
°
C/W)
= Maximum power dissipation of TLC07x IC (watts)
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| TLC073IDGQ | 功能描述:运算放大器 - 运放 Dual Wide-Bandwidth Hi-Output-Drive RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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| TLC073IDGQR | 功能描述:运算放大器 - 运放 Dual Wide-Bandwidth Hi-Output-Drive RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| TLC073IDGQRG4 | 功能描述:运算放大器 - 运放 Dual Wide-Bandwidth Hi-Output-Drive RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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