參數(shù)資料
型號(hào)： TPS75515KTTR
英文描述： VOLT REGULATOR|FIXED|+1.5V|CMOS|SIP|5PIN|PLASTIC
中文描述： 電壓調(diào)節(jié)器|定額| 1.5V的|的CMOS |園區(qū)| 5PIN |塑料
文件頁(yè)數(shù)： 20/27頁(yè)
文件大小： 398K
代理商： TPS75515KTTR
TPS75101-Q1,
’
75115-Q1,
’
75118-Q1,
’
75125-Q1,
’
75133-Q1 WITH POWER GOOD
TPS75301-Q1, TPS75315-Q1, TPS75318-Q1, TPS75325-Q1, TPS75333-Q1 WITH RESET
FAST-TRANSIENT-RESPONSE 1.5-A LOW-DROPOUT VOLTAGE REGULATORS
SGLS159
–
APRIL 2003
20
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
regulator protection
The TPS751xxQ or TPS753xxQ PMOS-pass transistor has a built-in back diode that conducts reverse currents
when the input voltage drops below the output voltage (e.g., during power down). Current is conducted from the
output to the input and is not internally limited. When extended reverse voltage is anticipated, external limiting may
be appropriate.
The TPS751xxQ or TPS753xxQ also features internal current limiting and thermal protection. During normal
operation, the TPS751xxQ or TPS753xxQ limits output current to approximately 3.3 A. When current limiting
engages, the output voltage scales back linearly until the overcurrent condition ends. While current limiting is
designed to prevent gross device failure, care should be taken not to exceed the power dissipation ratings of the
package. If the temperature of the device exceeds 150
°
C(typ), thermal-protection circuitry shuts it down. Once the
device has cooled below 130
°
C(typ), regulator operation resumes.
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., 34.6
°
C/W for the 20-terminal
PWP with no airflow (see Table 1).
T
A
is the ambient temperature.
(3)
The regulator dissipation is calculated using:
PD
VI
VO
IO
(4)
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the thermal
protection circuit.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS75515KTTRG3 功能描述:低壓差穩(wěn)壓器 - LDO 1.5-Volt 5A 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(dòng)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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS75515KTTT 功能描述:低壓差穩(wěn)壓器 - LDO 1.5-Volt 5A 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(dòng)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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS75515KTTT 制造商:Texas Instruments 功能描述:IC LDO REG 5A 1.5V TO-263-5 制造商:Texas Instruments 功能描述:IC, LDO REG 5A 1.5V TO-263-5
TPS75515KTTTG3 功能描述:低壓差穩(wěn)壓器 - LDO 1.5-Volt 5A 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(dòng)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(lèi)型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20
TPS75518KC 功能描述:低壓差穩(wěn)壓器 - LDO 1.8-Volt 5A 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(dòng)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(lèi)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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