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參數(shù)資料
| 型號： | REG104GA-2.7G4 |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 固定正電壓單路輸出LDO穩(wěn)壓器 |
| 英文描述： | 2.7 V FIXED POSITIVE LDO REGULATOR, 0.4 V DROPOUT, PDSO6 |
| 封裝： | GREEN, PLASTIC, SOT-223, 6 PIN |
| 文件頁數(shù)： | 3/22頁 |
| 文件大?。?/td> | 794K |
| 代理商： | REG104GA-2.7G4 |
REG104
11
SBVS025G
FIGURE 9. Maximum Power Dissipation versus Ambient
Temperature for the Various Packages and
PCB Heat Sink Configurations.
POWER DISSIPATION
The REG104 is available in two different package configura-
tions. The ability to remove heat from the die is different for
each package type and, therefore, presents different consid-
erations in the printed circuit board (PCB) layout. The PCB
area around the device that is free of other components
moves the heat from the device to the ambient air. While it
is difficult to impossible to quantify all of the variables in a
thermal design of this type, performance data for several
configurations are shown in Figure 9. In all cases the PCB
copper area is bare copper, free of solder resist mask, and
not solder plated. All examples are for 1-ounce copper. Using
heavier copper will increase the effectiveness in moving the
heat from the device. In those examples where there is
copper on both sides of the PCB, no connection has been
provided between the two sides. The addition of plated
through holes will improve the heat sink effectiveness.
Power dissipation depends on input voltage and load condi-
tions. Power dissipation is equal to the product of the aver-
age output current times the voltage across the output
element, VIN to VOUT voltage drop.
PV
V
I
DIN
OUT
OUT AVG
=
(
–
)
()
Power dissipation can be minimized by using the lowest
possible input voltage necessary to assure the required
output voltage.
5
4
3
2
1
0
Power
Dissipation
(Watts)
0
25
50
75
125
100
Ambient Temperature (
°C)
CONDITIONS
#1
#2
#3
#4
CONDITION
PACKAGE
PCB AREA
θ
JA
1
DDPAK
4in2 Top Side Only
27
°C/W
2
SOT-223
4in2 Top Side Only
53
°C/W
3
DDPAK
None
65
°C/W
4
SOT-223
0.5in2 Top Side Only
110
°C/W
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| REG1117FA | ADJUSTABLE POSITIVE LDO REGULATOR, 1.55 V DROPOUT, PSSO3 |
| REG1117TR | ADJUSTABLE POSITIVE LDO REGULATOR, 1.2 V DROPOUT, PDSO4 |
| REG1118-2.85/2K5G4 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO4 |
| REG1118-2.85G4 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO4 |
| REG1118-2.85/2K5 | 2.85 V FIXED POSITIVE LDO REGULATOR, 1.3 V DROPOUT, PDSO4 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| REG104GA-3 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg 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(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg 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(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3 | 制造商:Texas Instruments 功能描述:LINEAR VOLTAGE REGULATOR IC |
| REG104GA-3.3/2K5 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg 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(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| REG104GA-3.3/2K5G4 | 功能描述:低壓差穩(wěn)壓器 - LDO DMOS 1A LDO Reg 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(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
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