TPS79428 超低噪声、高 PSRR、快速射频、高电平启用、250mA 低压降稳压器
TPS79428 描述
The TPS794xx family of low-dropout (LDO) linear voltage regulators features high power-supply rejection ratio (PSRR), ultralow-noise, fast start-up, and excellent line and load transient responses in small outline, MSOP-8 PowerPAD™ and SOT223-6 packages. Each device in the family is stable with a small 2.2-µF ceramic capacitor on the output. The family uses an advanced, proprietary BiCMOS fabrication process to yield extremely low dropout voltages (for example, 155 mV at 250 mA). Each device achieves fast start-up times (approximately 50 µs with a 0.001-µF bypass capacitor) while consuming low quiescent current (170 µA typical). Moreover, when the device is placed in standby mode, the supply current is reduced to less than µA.
|
TPS79401 |
TPS79418 |
TPS79425 |
TPS79428 |
TPS79430 |
TPS79433 |
| Iout(Max)(A) |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
0.25 |
| Vdo(Typ)(mV) |
145 |
145 |
145 |
155 |
155 |
145 |
| Iq(Typ)(mA) |
0.172 |
0.172 |
0.172 |
0.172 |
0.172 |
0.172 |
| Vin(Min)(V) |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
2.7 |
| Vin(Max)(V) |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
5.5 |
| Vout(Min)(V) |
|
1.8 |
2.5 |
2.8 |
3 |
3.3 |
| Vout(Max)(V) |
|
1.8 |
2.5 |
2.8 |
3 |
3.3 |
| Vout Adj(Min)(V) |
1.22 |
|
|
|
|
|
| Vout Adj(Max)(V) |
5.5 |
|
|
|
|
|
| Accuracy(%) |
3 |
3 |
3 |
3 |
3 |
3 |
| Output Capacitor(uF) |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
| Output Capacitor Type |
Ceramic |
Ceramic |
Ceramic |
Ceramic |
Ceramic |
Ceramic |
| Fixed Output Options(V) |
|
1.8 |
2.5 |
2.8 |
3 |
3.3 |
| Pin/Package |
6SOT-223, 8MSOP-PowerPAD |
6SOT-223, 8MSOP-PowerPAD |
6SOT-223, 8MSOP-PowerPAD |
6SOT-223, 8MSOP-PowerPAD |
6SOT-223, 8MSOP-PowerPAD |
6SOT-223, 8MSOP-PowerPAD |
| Rating |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
Catalog |
| Regulated Outputs(#) |
1 |
1 |
1 |
1 |
1 |
1 |
TPS79428 特性
- 250-mA Low-Dropout Regulator With Enable
- Available in Fixed and Adjustable (1.2 V to
5.5 V) Versions
- High PSRR (60 dB at 10 kHz)
- Ultralow Noise (32 µVrms, TPS79428)
- Fast Start-Up Time (50 µs)
- Stable With a 2.2-µF Ceramic Capacitor
- Excellent Load/Line Transient Response
- Very Low Dropout Voltage (155 mV at Full Load)
- Available in MSOP-8 and SOT223-6 Packages
- APPLICATIONS
- RF: VCOs, Receivers, ADCs
- Audio
- Bluetooth™, Wireless LAN
- Cellular and Cordless Telephones
- Handheld Organizers, PDAs
TPS79428 芯片订购指南
TPS79428 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 |
| TPS79428DCQ |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS79428DCQ |
TPS79428DCQ |
| TPS79428DCQG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS79428DCQG4 |
TPS79428DCQG4 |
| TPS79428DCQR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS79428DCQR |
TPS79428DCQR |
| TPS79428DCQRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
TPS79428DCQRG4 |
TPS79428DCQRG4 |
| TPS79428DGNR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS79428DGNR |
TPS79428DGNR |
| TPS79428DGNRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS79428DGNRG4 |
TPS79428DGNRG4 |
| TPS79428DGNT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS79428DGNT |
TPS79428DGNT |
| TPS79428DGNTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-1-260C-UNLIM |
TPS79428DGNTG4 |
TPS79428DGNTG4 |
TPS79428 应用技术支持与电子电路设计开发资源下载
- TPS79428 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)
TPS79428 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| TPS79428 评估模块 |
TPS79428EVM-207 |
Texas Instruments |
开发电路板/EVM |
| 用于 Xilinx FPGA 的 XILINXPWR-079 电源管理评估模块 |
XILINXPWR-079 |
Texas Instruments |
开发电路板/EVM |
| 采用 SOT223 (DCQ) 封装与大多数正输出 LDO 兼容的 DEM-SOT223LDO |
DEM-SOT223LDO |
Texas Instruments |
开发电路板/EVM |
TPS79428 参考设计
| 说明 |
型号 |
公司 |
| Spartan™-3 电源管理解决方案（设计 1） |
PR213 |
Texas Instruments |
| Spartan™-3 电源管理解决方案（设计 3） |
PR215 |
Texas Instruments |
| Spartan™-II 电源管理解决方案（设计 2） |
PR209 |
Texas Instruments |
| Spartan™-II 电源管理解决方案（设计 3） |
PR211 |
Texas Instruments |
| Spartan™-IIE 电源管理解决方案（设计 2） |
PR210 |
Texas Instruments |
| Spartan™-IIE 电源管理解决方案（设计 3） |
PR212 |
Texas Instruments |
