LFC789D25 双路线性 FET 控制器
LFC789D25 描述
The LFC789D25 is a dual linear FET controller that simplifies the design of dual power supplies. The device consists of two independent controllers, each of which drives an external MOSFET to implement a low-dropout regulator. One controller is programmed to regulate a fixed 2.5-V output, while the second controller can be programmed to regulate any desired output voltage via a reference input pin, allowing for the creation of a tracking regulator often needed for termination schemes. And, because heating effects of the external FETs easily can be isolated from the controllers, the controllers can regulate the output voltages to a maximum tolerance of ±2% across temperature and load.
The LFC789D25 allows designers a great deal of flexibility in selecting external components and topology to implement their specific power-supply needs.
LFC789D25 特性
- Two Independent Controllers for Regulation of:
- Fixed 2.5-V and an Adjustable Output
- ±2% (Max) Regulation Across Temperature and Load (1 mA to 3 A)
- Adjustable Output Can Be Set Via an External Reference Pin, Allowing for the Creation of a Tracking Regulator
- Great Design Flexibility With Minimal External Components
- Applications: High-Current, Low-Dropout Regulators for:
- DDR/RDRAM Memory Termination
- Motherboards
- Chipset I/O
- GTLP Termination
LFC789D25 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 |
| LFC789D25CD |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
KADAC |
| LFC789D25CDE4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
KADAC |
| LFC789D25CDG4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
KADAC |
| LFC789D25CDR |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
KADAC |
| LFC789D25CDRE4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
KADAC |
| LFC789D25CDRG4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
KADAC |
| LFC789D25CPW |
ACTIVE |
0 to 70 |
0.60 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
KADAC |
| LFC789D25CPWE4 |
ACTIVE |
0 to 70 |
0.60 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
KADAC |
| LFC789D25CPWG4 |
ACTIVE |
0 to 70 |
0.60 | 1ku |
TSSOP (PW) | 8 |
150 | TUBE |
KADAC |
| LFC789D25CPWR |
ACTIVE |
0 to 70 |
0.55 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
KADAC |
| LFC789D25CPWRE4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
KADAC |
| LFC789D25CPWRG4 |
ACTIVE |
0 to 70 |
0.55 | 1ku |
TSSOP (PW) | 8 |
2000 | LARGE T&R |
KADAC |
LFC789D25 应用技术支持与电子电路设计开发资源下载
- LFC789D25 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)
LFC789D25 工具与软件
| 名称 |
型号 |
公司 |
工具/软件类型 |
| LFC789D25 评估模块 |
LFC789D25EVM |
Texas Instruments |
开发电路板/EVM |
