：凌力尔特公司为具有苛刻噪声要求的应用 (例如位于狭窄环境中的敏感 RF 电路或音频电路) 提供了一个独特的超低噪声线性和开关稳压器系列。这些稳压器所采用的拓扑结构包括升压、降压、负输出、反激和 Cuk。噪声电平一般为几十微伏 (μV)。(6)
| 型号 |
Vin Min |
Vin Max |
Topology |
Switch Current |
Monolithic |
Multiple Output |
Comments |
Packages |
数据手册DataSheet下载 |
| LT1533 |
2.7 |
23 |
Push-Pull |
1.25 |
yes |
no |
Greatly Reduced Conducted/Emitted EMI, (<100µVPP), Independent Control of Switch Voltage/Current Slew Rates |
SO-16 |
LT1533 |
| LT1534 |
2.7 |
23 |
Boost, Flyback, Sepic |
2 |
yes |
no |
Greatly Reduced Conducted/Emitted EMI, Independent Control of Switch Voltage/Current Slew Rates |
SO-16 |
LT1534 |
| LT1683 |
4 |
20 |
Push-Pull, Inverting |
5 |
no |
no |
Slew Rate Controlled Ultralow Noise Push-Pull DC/DC Controller |
SSOP-20 |
LT1683 |
| LT1738 |
4 |
20 |
Boost, Inverting, Sepic, Flyback |
20 |
no |
no |
Ultralow noise |
SSOP-20 |
LT1738 |
| LT1777 |
7 |
48 |
Buck |
0.7 |
yes |
no |
Programmable di/dt Limit for Low Noise Applications |
SO-16 |
LT1777 |
| LT3439 |
2.8 |
20 |
Push-Pull |
1 |
yes |
no |
Slew Rate Controlled Ultralow Noise1A Isolated DC/DC Transformer Driver |
TSSOP-16 |
LT3439 |