TPS7148 最低压降 (LDO) PMOS 电压稳压器
TPS7148 描述
The TPS71xx integrated circuits are a family of micropower low-dropout (LDO) voltage regulators. An order of magnitude reduction in dropout voltage and quiescent current over conventional LDO performance is achieved by replacing the typical pnp pass transistor with a PMOS device.
Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (maximum of 32 mV at an output current of 100 mA for the TPS7150) and is directly proportional to the output current (see Figure 1). Additionally, since the PMOS pass element is a voltage-driven device, the quiescent current is very low and remains independent of output loading (typically 285 µA over the full range of output current, 0 mA to 500 mA).
|
TPS7101 |
TPS7133 |
TPS7148 |
TPS7150 |
| Iout(Max)(A) |
0.5 |
0.5 |
0.5 |
0.5 |
| Vdo(Typ)(mV) |
146 |
235 |
150 |
146 |
| Vin(Min)(V) |
2.5 |
3.54 |
4.95 |
5.146 |
| Vin(Max)(V) |
10 |
10 |
10 |
10 |
| Output Capacitor(uF) |
10 |
10 |
10 |
10 |
| Output Capacitor Type |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
| Pin/Package |
20TSSOP, 8PDIP, 8SOIC |
20TSSOP, 8PDIP, 8SOIC |
20PDIP, 8PDIP, 8SOIC |
20TSSOP, 8PDIP, 8SOIC |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
| Vout(Min)(V) |
|
3.3 |
4.85 |
5 |
| Vout(Max)(V) |
|
3.3 |
4.85 |
5 |
TPS7148 特性
- Available in 5-V, 4.85-V, and 3.3-V Fixed-Output and Adjustable Versions
- Very Low-Dropout Voltage ...Maximum of 32 mV at IO = 100 mA (TPS7150)
- Very Low Quiescent Current – Independent of Load . . . 285 µA Typ
- Extremely Low Sleep-State Current
0.5 µA Max
- 2% Tolerance Over Specified Conditions For Fixed-Output Versions
- Output Current Range of 0 mA to 500 mA
- TSSOP Package Option Offers Reduced Component Height for Space-Critical Applications
- Power-Good (PG) Status Output
TPS7148 芯片订购指南
| 器件 |
状态 |
温度 (oC) |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| TPS7148QD |
ACTIVE |
-40 to 125 |
1.60 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
7148Q |
| TPS7148QDG4 |
ACTIVE |
-40 to 125 |
1.60 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
7148Q |
| TPS7148QDR |
ACTIVE |
-40 to 125 |
1.30 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
7148Q |
| TPS7148QDRG4 |
ACTIVE |
-40 to 125 |
1.30 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
7148Q |
| TPS7148QP |
ACTIVE |
-40 to 125 |
1.30 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
TPS7148QP |
| TPS7148QPE4 |
ACTIVE |
-40 to 125 |
1.30 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
TPS7148QP |
TPS7148 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| TPS7148QD |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS7148QD |
TPS7148QD |
| TPS7148QDG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS7148QDG4 |
TPS7148QDG4 |
| TPS7148QDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS7148QDR |
TPS7148QDR |
| TPS7148QDRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS7148QDRG4 |
TPS7148QDRG4 |
| TPS7148QP |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
TPS7148QP |
TPS7148QP |
| TPS7148QPE4 |
Pb-Free (RoHS) |
CU NIPDAU |
N/A for Pkg Type |
TPS7148QPE4 |
TPS7148QPE4 |
TPS7148 应用技术支持与电子电路设计开发资源下载
- TPS7148 数据资料 dataSheet 下载.PDF
- TI 德州仪器LDO低压差线性稳压器驱动器选型与价格参考 . xls
- Dual MOSFET Driver
(PDF 498 KB)
- 全面认识开关型电源中的BUCK-BOOST功率级 (Rev. A)
(PDF 2206 KB)
- LDO PSRR Measurement Simplified
(PDF 140 KB)
- LDO Noise Demystified
(PDF 782 KB)
- 标准线性产品交叉参考 (Rev. D)
(PDF 1058 KB)
- 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
TPS7148 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS7148 评估模块 |
TPS7148EVM |
Texas Instruments |
开发电路板/EVM |
| 采用 5 条或 6 条引线 SOT23 (DBV) 封装与大多数正输出 LDO 稳压器兼容的 DEM-SOT23LDO |
DEM-SOT23LDO |
Texas Instruments |
开发电路板/EVM |
