TPS7250 微功耗非常低压降 (LDO) PMOS 电压稳压器
TPS7250 描述
The TPS72xx family of low-dropout (LDO) voltage regulators offers the benefits of low-dropout voltage, micropower operation, and miniaturized packaging. These regulators feature extremely low dropout voltages and quiescent currents compared to conventional LDO regulators. Offered in small-outline integrated-circuit (SOIC) packages and 8-terminal thin shrink small-outline (TSSOP), the TPS72xx series devices are ideal for cost-sensitive designs and for designs where board space is at a premium.
A combination of new circuit design and process innovation has enabled the usual pnp pass transistor to be replaced by a PMOS device. Because the PMOS pass element behaves as a low-value resistor, the dropout voltage is very low - maximum of 85 mV at 100 mA of load current (TPS7250) - and is directly proportional to the load current (see Figure 1).
|
TPS7201 |
TPS7225 |
TPS7230 |
TPS7233 |
TPS7248 |
TPS7250 |
| Iout(Max)(A) |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
| Vdo(Typ)(mV) |
190 |
560 |
390 |
360 |
216 |
190 |
| Iq(Typ)(mA) |
0.18 |
0.08 |
0.18 |
0.15 |
0.18 |
0.18 |
| Vin(Min)(V) |
3 |
3.65 |
3.96 |
3.98 |
5.24 |
5.41 |
| Vin(Max)(V) |
10 |
10 |
10 |
10 |
10 |
10 |
| Vout(Min)(V) |
|
2.5 |
3 |
3.3 |
4.85 |
5 |
| Vout(Max)(V) |
|
2.5 |
3 |
3.3 |
4.85 |
5 |
| Vout Adj(Min)(V) |
1.2 |
|
|
|
|
|
| Vout Adj(Max)(V) |
9.75 |
|
|
|
|
|
| Accuracy(%) |
|
|
|
|
|
2 |
| Output Capacitor(uF) |
10 |
10 |
10 |
10 |
10 |
10 |
| Output Capacitor Type |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
Tantalum |
| Fixed Output Options(V) |
|
2.5 |
3 |
3.3 |
4.85 |
5 |
| Pin/Package |
8PDIP, 8SOIC, 8TSSOP |
8PDIP, 8SOIC, 8TSSOP |
8PDIP, 8SOIC, 8TSSOP |
8PDIP, 8SOIC, 8TSSOP |
8PDIP, 8SOIC, 8TSSOP |
8PDIP, 8SOIC, 8TSSOP |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
TPS7250 特性
- Available in 5-V, 4.85-V, 3.3-V, 3.0-V, and 2.5-V Fixed-Output and Adjustable Versions
- Dropout Voltage <85 mV Max at
IO = 100 mA (TPS7250)
- Low Quiescent Current, Independent of Load, 180 uA Typ
- 8-Pin SOIC and 8-Pin TSSOP Package
- Output Regulated to ±2% Over Full Operating Range for Fixed-Output Versions
- Extremely Low Sleep-State Current,
0.5 uA Max
- Power-Good (PG) Status Output
TPS7250 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 |
| TPS7250QD |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
7250Q |
| TPS7250QDG4 |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
7250Q |
| TPS7250QDR |
ACTIVE |
-40 to 125 |
0.65 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
7250Q |
| TPS7250QDRG4 |
ACTIVE |
-40 to 125 |
0.65 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
7250Q |
| TPS7250QP |
ACTIVE |
-40 to 125 |
0.65 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
TPS7250QP |
| TPS7250QPE4 |
ACTIVE |
-40 to 125 |
0.65 | 1ku |
PDIP (P) | 8 |
50 | TUBE |
TPS7250QP |
| TPS7250QPW |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
PT7250 |
| TPS7250QPWG4 |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
PT7250 |
| TPS7250QPWLE |
OBSOLETE |
-40 to 125 |
|
TSSOP (PW) | 8 |
|
PT7250 |
TPS7250 应用技术支持与电子电路设计开发资源下载
- TPS7250 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)
TPS7250 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS7250EVM 评估模块 |
TPS7250EVM |
Texas Instruments |
开发电路板/EVM |
