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參數(shù)資料
| 型號： | TPS72215DBVR |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | LOW INPUT VOLTAGE, CAP FREE 50-mA LOW-DROPOUT LINEAR REGULATORS |
| 中文描述： | 低輸入電壓，第免費50毫安低壓降線性穩(wěn)壓器 |
| 文件頁數(shù)： | 8/11頁 |
| 文件大?。?/td> | 119K |
| 代理商： | TPS72215DBVR |
TPS72201, TPS72215
TPS72216, TPS72218
SLVS390B
–
DECEMBER 2001
–
REVISED MAY 2002
www.ti.com
8
TPS72215
1.8 V
1.5 V
Boost Converter
3.3 V
1.8 V
–
3 V
VIO
VCORE
DSP or
Controller
Two AAA
Batteries
Figure 17. Dual Supply Application Circuit
EXTERNAL CAPACITOR REQUIREMENTS
A 0.1-
μ
F ceramic bypass capacitor is required on both the input and output for stability. Larger capacitors improve transient
response, noise rejection, and ripple rejection. A higher value electrolytic input capacitor may be necessary if large, fast
rise time load transient are anticipated, and/or there is significant input resistance from the device to the input power supply.
POWER DISSIPATION AND JUNCTION TEMPERATURE
Specified regulator operation is assured to a junction temperature of 125
°
C; the maximum junction temperature allowable
without damaging the device is 150
°
C. This restriction limits the power dissipation the regulator can handle in any given
application. To ensure the junction temperature is within acceptable limits, calculate the maximum allowable dissipation,
P
D(max)
, and the actual dissipation, P
D
, which must be less than or equal to P
D(max)
.
The maximum-power-dissipation limit is determined using the following equation:
PD(max)
TJmax
TA
RJA
Where:
T
J
max
is the maximum allowable junction temperature.
R
θ
JA
is the thermal resistance junction-to-ambient for the package, see the power dissipation rating
table.
T
A
is the ambient temperature.
The regulator dissipation is calculated using:
PD
VI
VO
IO
Power dissipation resulting from quiescent current is negligible.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS72215DBVRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Noise Low Input Voltage 50mA 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 |
| TPS72215DBVT | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Noise Low Input Voltage 50mA 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 |
| TPS72215DBVTG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Noise Low Input Voltage 50mA 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 |
| TPS72216DBVR | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Noise Low Input Voltage 50mA 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 |
| TPS72216DBVRG4 | 功能描述:低壓差穩(wěn)壓器 - LDO Low-Noise Low Input Voltage 50mA 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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