参数资料
| 型号： | TPS75315QPWPREP |
| 厂商： | Texas Instruments |
| 文件页数： | 20/33页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO 1.5V 1.5A 20HTSSOP |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，固定式 |
| 输出电压： | 1.5V |
| 输入电压： | 2.7 V ~ 5 V |
| 稳压器数量： | 1 |
| 电流 - 输出： | 1.5A（最小值） |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 供应商设备封装： | 20-HTSSOP |
| 包装： | 标准包装 |
| 其它名称： | 296-22506-6 |
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TPS75101 EP, '75115 EP, '75118 EP, '75125 EP, '75133 EP WITH POWER GOOD
TPS75301 EP, TPS75315 EP, TPS75318 EP, TPS75325 EP, TPS75333 EP WITH RESET
FAST TRANSIENT RESPONSE 1.5 A LOW DROPOUT VOLTAGE REGULATORS
SGLS158 ? APRIL 2003
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:
+ J
q JA
P
Where:
D(max)
T max * T
R
A
(3)
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.
The regulator dissipation is calculated using:
+ V * V
P
D
I
O
I
O
(4)
Power dissipation resulting from quiescent current is negligible. Excessive power dissipation will trigger the thermal
protection circuit.
20
POST OFFICE BOX 655303
? DALLAS, TEXAS 75265
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS75315QPWPRG4 | 功能描述:低压差稳压器 - LDO Fast-Tran-Resp 1.5-A RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS75315QPWPRQ1 | 功能描述:低压差稳压器 - LDO Fast-Trans-Resp 1.5A LDO Vltg Reg RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS75318QPWP | 功能描述:低压差稳压器 - LDO Fast-Tran-Resp 1.5-A RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS75318QPWPG4 | 功能描述:低压差稳压器 - LDO Fast-Tran-Resp 1.5-A RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| TPS75318QPWPR | 功能描述:低压差稳压器 - LDO Fast-Tran-Resp 1.5-A RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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