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參數(shù)資料
| 型號： | TPS75401Q |
| 廠商： | Texas Instruments, Inc. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| 中文描述： | 快速瞬態(tài)響應2 -低壓差電壓調(diào)節(jié)器 |
| 文件頁數(shù)： | 21/29頁 |
| 文件大?。?/td> | 446K |
| 代理商： | TPS75401Q |
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TPS75201Q, TPS75215Q, TPS75218Q, TPS75225Q, TPS75233Q WITH RESET
TPS75401Q, TPS75415Q, TPS75418Q, TPS75425Q, TPS75433Q WITH POWER GOOD
FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS
SLVS242B – MARCH 2000 – REVISED JUNE 2003
21
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
THERMAL INFORMATION
thermally enhanced TSSOP-20 (PWP – PowerPad
)
The thermally enhanced PWP package is based on the 20-pin TSSOP, but includes a thermal pad [see
Figure 25(c)] to provide an effective thermal contact between the IC and the PWB.
Traditionally, surface mount and power have been mutually exclusive terms. A variety of scaled-down
TO220-type packages have leads formed as gull wings to make them applicable for surface-mount applications.
These packages, however, suffer from several shortcomings: they do not address the very low profile
requirements (<2 mm) of many of today’s advanced systems, and they do not offer a pin-count high enough
to accommodate increasing integration. On the other hand, traditional low-power surface-mount packages
require power-dissipation derating that severely limits the usable range of many high-performance analog
circuits.
The PWP package (thermally enhanced TSSOP) combines fine-pitch surface-mount technology with thermal
performance comparable to much larger power packages.
The PWP package is designed to optimize the heat transfer to the PWB. Because of the very small size and
limited mass of a TSSOP package, thermal enhancement is achieved by improving the thermal conduction
paths that remove heat from the component. The thermal pad is formed using a lead-frame design (patent
pending) and manufacturing technique to provide the user with direct connection to the heat-generating IC.
When this pad is soldered or otherwise coupled to an external heat dissipator, high power dissipation in the
ultrathin, fine-pitch, surface-mount package can be reliably achieved.
DIE
Side View (a)
End View (b)
Bottom View (c)
DIE
Thermal
Pad
Figure 25. Views of Thermally Enhanced PWP Package
Because the conduction path has been enhanced, power-dissipation capability is determined by the thermal
considerations in the PWB design. For example, simply adding a localized copper plane (heat-sink surface),
which is coupled to the thermal pad, enables the PWP package to dissipate 2.5 W in free air (reference
Figure 27(a), 8 cm
2
of copper heat sink and natural convection). Increasing the heat-sink size increases the
power dissipation range for the component. The power dissipation limit can be further improved by adding
airflow to a PWB/IC assembly (see Figures 26 and 27). The line drawn at 0.3 cm
2
in Figures 26 and 27 indicates
performance at the minimum recommended heat-sink size, illustrated in Figure 29.
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PDF描述 |
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| TPS75415Q | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| TPS75418Q | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| TPS75425Q | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| TPS75433Q | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
| TPS75215Q | FAST-TRANSIENT-RESPONSE 2-A LOW-DROPOUT VOLTAGE REGULATORS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS75401QPWP | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Resp 2-A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS75401QPWPG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Resp 2-A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS75401QPWPR | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Resp 2-A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS75401QPWPRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Resp 2-A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TPS75415QPWP | 功能描述:低壓差穩(wěn)壓器 - LDO Fast-Tran-Resp 2-A RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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