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參數(shù)資料
| 型號： | TC1070VCT |
| 廠商： | TelCom Semiconductor, Inc. |
| 元件分類： | DC/DC變換器 |
| 英文描述： | RS-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 48V; Output Voltage (Vdc): 05V; Power: 2W; 2:1 and 4:1 Wide Input Voltage Ranges; 1kVDC, 2kVD & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protection; Low Noise; No External Capacitor needed; Efficiency to 83% |
| 中文描述： | 50mA的可調(diào)式CMOS LDO穩(wěn)壓器具有關斷 |
| 文件頁數(shù)： | 11/12頁 |
| 文件大?。?/td> | 117K |
| 代理商： | TC1070VCT |
TC1071
5
PRELIMINARY INFORMATION
TC1071-01
6/13/97
100mA ADJUSTABLE CMOS
LDO WITH SHUTDOWN
Equation 2 can be used in conjunction with Equation 3
to ensure regulator thermal operation is within limits. For
example:
Given:
V
INMAX
= 3.0V
±
10%
V
OUTMIN
= 2.7V
±
0.5V
I
LOAD
= 98mA
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 1.1) – (2.7 x .995)]40 x 10
–3
= 60mW
Maximum allowable power dissipation:
P
DMAX
= (T
JMAX
– T
AMAX
)
θ
JA
= (125 – 55)
220
= 318mW
In this example, the TC1071 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 increase the
maximum allowable power dissipation limit.
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| TC1072-28VCH | RS-S_D(Z) Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 48V; Output Voltage (Vdc): 05V; Power: 2W; 2:1 and 4:1 Wide Input Voltage Ranges; 1kVDC, 2kVD & 3kVDC Isolation; UL94V-0 Package Material; Continuous Short Circuit Protection; Low Noise; No External Capacitor needed; Efficiency to 83% |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| TC1070VCT713 | 功能描述:低壓差穩(wěn)壓器 - LDO 50mA Adj 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| TC1071 | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown |
| TC1071VCT | 制造商:MICROCHIP 制造商全稱:Microchip Technology 功能描述:50mA, 100mA and 150mA Adjustable CMOS LDOs with Shutdown |
| TC1071VCT713 | 功能描述:低壓差穩(wěn)壓器 - LDO .1mA Adj LDO w/Shtdn 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 |
| TC1072 | 制造商:TELCOM 制造商全稱:TelCom Semiconductor, Inc 功能描述:50mA CMOS LDO WITH SHUTDOWN, ERROR OUTPUT AND VREF BYPASS |
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