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參數資料
| 型號： | TPS77518-Q1 |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Automotive Catalog Fast Transient-Response 500-mA Low-Dropout Voltage Regulators |
| 中文描述： | 汽車產品目錄快速瞬態響應的500mA低壓降穩壓器 |
| 文件頁數： | 19/22頁 |
| 文件大小： | 316K |
| 代理商： | TPS77518-Q1 |
TPS77501, TPS77515, TPS77518, TPS77525, TPS77533 WITH RESET OUTPUT
TPS77601, TPS77615, TPS77618, TPS77625, TPS77628, TPS77633 WITH PG OUTPUT
FAST-TRANSIENT-RESPONSE 500-mA LOW-DROPOUT VOLTAGE REGULATORS
SLVS232B – SEPTEMBER 1999 – REVISED NOVEMBER 1999
19
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
power dissipation and junction temperature
Specified regulator operation is assured to a junction temperature of 125
°
C; the maximum junction temperature
should be restricted to 125
°
C under normal operating conditions. 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, i.e., 176
°
C/W for the 8-terminal
SOIC and 32.6
°
C/W for the 20-terminal PWP with no airflow.
T
A
is the ambient temperature.
The regulator dissipation is calculated using:
PD
VI
VO
IO
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the
thermal protection circuit.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| TPS77518QPWPRQ1 | 功能描述:低壓差穩壓器 - LDO Fast Trans-Resp 500 mA LDO Vltg 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 負載調節:0.3 % 輸出端數量: 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 |
| TPS77525D | 功能描述:低壓差穩壓器 - LDO Fast-Tran-Res 500-mA 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 負載調節:0.3 % 輸出端數量: 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 |
| TPS77525D | 制造商:Texas Instruments 功能描述:Voltage Regulator IC Voltage Regulator T |
| TPS77525D | 制造商:Texas Instruments 功能描述:IC V REG LDO 2.5V SMD SOIC8 制造商:Texas Instruments 功能描述:IC, V REG, LDO, 2.5V, SMD, SOIC8 |
| TPS77525DG4 | 功能描述:低壓差穩壓器 - LDO Fast-Tran-Res 500-mA 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 負載調節:0.3 % 輸出端數量: 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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