參數(shù)資料
型號： TC1054-3.6VCT
廠商： Microchip Technology Inc.
元件分類： 圓形連接器
英文描述： Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; No. of Contacts:8; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug
中文描述： 為50mA，100mA的電流為150mA的CMOS關(guān)機和錯誤LDO的輸出
文件頁數(shù)： 11/12頁
文件大?。?/td> 123K
代理商： TC1054-3.6VCT
TC1055
5
PRELIMINARY INFORMATION
TC1055-01 6/5/97
100mA CMOS LDO WITH SHUTDOWN
AND ERROR OUTPUT
In this example, the TC1055 dissipates a maximum of
only 60mW; far below the allowable limit of 318mW. In a
similar manner, Equation 1 and Equation 2 can be used to
calculate maximum current and/or input voltage limits. For
example, the maximum allowable V
IN
is found by substitut-
ing the maximum allowable power dissipation of 318mW
into Equation 1, from which V
INMAX
= 5.9V.
Layout Considerations
The primary path of heat conduction out of the package
is via the package leads. Therefore, layouts having a
ground plane, wide traces at the pads, and wide power
supply bus lines combine to lower
θ
JA
and therefore in-
crease the maximum allowable power dissipation limit.
P
D
≈
(V
INMAX
– V
OUTMIN
)I
LOADMAX
Where:
P
D
= Worst case actual power dissipation
V
INMAX
= Maximum voltage on V
IN
V
OUTMIN
= Minimum regulator output voltage
I
LOADMAX
= Maximum output (load) current
Equation 1.
The maximum allowablepower dissipation (Equation 2)
is a function of the maximum ambient temperature (T
AMAX
),
the maximum allowable die temperature (125
°
C) and the
thermal resistance from junction-to-air (
θ
JA
). SOT-23A-5
package has a
θ
JA
of approximately 220
°
C/Wattwhen
mounted on a single layer FR4 dielectric copper clad PC
board.
P
D MAX
= (T
JMAX
– T
JMAX)
θ
JA
Where all terms are previously defined.
Equation 2.
Equation 1 can be used in conjunction with Equation 2
to ensure regulator thermal operation is within limits. For
example:
Given:
V
INMAX
= 3.0V
±
5%
V
OUTMIN
= 2.7V
±
0.5V
I
LOAD
= 40mA
T
AMAX
= 55
°
C
Find:
1. Actual power dissipation
2. Maximum allowable dissipation
Actual power dissipation:
P
D
≈
(V
INMAX
– V
OUTMIN
)I
LOADMAX
= [(3.0 x 1.05) – (2.7 x .995)]40 x 10
–3
= 18.5mW
Maximum allowable power dissipation:
P
DMAX
= (T
JMAX
– T
AMAX
)
θ
JA
= (125 – 55)
220
= 318mW
相關(guān)PDF資料
PDF描述
TC1054-4.0VCT 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output
TC1054-5.0VCT 50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output
TC1054-2.7VCT Circular Connector; Body Material:Aluminum; Series:PT06; Number of Contacts:4; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Circular Contact Gender:Socket; Insert Arrangement:12-4
TC1054 50mA CMOS LDO WITH SHUTDOWN AND ERROR OUTPUT
TC1054-3.0VCT Circular Connector; MIL SPEC:MIL-C-26482, Series I, Solder; Body Material:Aluminum; Series:PT06; Number of Contacts:4; Connector Shell Size:12; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TC1054-4.0VCT 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output
TC1054-4.0VCT713 功能描述:低壓差穩(wěn)壓器 - LDO 50mA LDO 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TC1054-5.0VCT 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA CMOS LDOs with Shutdown and ERROR Output
TC1054-5.0VCT713 功能描述:低壓差穩(wěn)壓器 - LDO 50mA LDO 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(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TC1055 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50 mA, 100 mA and 150 mA CMOS LDOs with Shutdown and ERROR Output
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