LTC3772B是Linear公司的一款外部开关电源控制器产品，LTC3772B是Micropower No RSENSE Constant Frequency Step-Down DC/DC Controller，本站介绍了LTC3772B的封装应用图解、特点和优点、功能等，并给出了与LTC3772B相关的凌力尔特元器件型号供参考。
LTC3772B - Micropower No RSENSE Constant Frequency Step-Down DC/DC Controller
LTC3772B - Micropower No RSENSE Constant Frequency Step-Down DC/DC Controller - Linear Technology（凌力尔特）
The LTC3772B is a constant frequency current mode step-down DC/DC controller in a low profile 8-lead SOT-23 (ThinSOTTM) and a 3mm × 2mm DFN package. The No RSENSE TM architecture eliminates the need for a current sense resistor, improving efficiency and saving board space.
The LTC3772B automatically switches into pulse skipping operation at light loads. It consumes only 200μA of quiescent current under a no-load condition.
The LTC3772B incorporates an undervoltage lockout feature that shuts down the device when the input voltage falls below 2V. To maximize the runtime from a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle). High switching frequency of 550kHz allows the use of a small inductor and capacitors. An internal soft-start smoothly ramps the output voltage from zero to its regulation point.
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
|---|---|---|---|---|
| LTC3772BEDDB | 3x2 DFN-8 | E | $2.73 | |
| LTC3772BEDDB#PBF | 3x2 DFN-8 | E | $2.73 | |
| LTC3772BEDDB#TR | 3x2 DFN-8 | E | $2.73 | $1.91 |
| LTC3772BEDDB#TRM | 3x2 DFN-8 | E | $2.73 | $1.93 |
| LTC3772BEDDB#TRMPBF | 3x2 DFN-8 | E | $2.73 | $1.93 |
| LTC3772BEDDB#TRPBF | 3x2 DFN-8 | E | $2.73 | $1.91 |
| LTC3772BETS8 | SOT-23 | E | $2.71 | |
| LTC3772BETS8#PBF | SOT-23 | E | $2.73 | |
| LTC3772BETS8#TR | SOT-23 | E | $2.71 | $1.91 |
| LTC3772BETS8#TRM | SOT-23 | E | $2.71 | $1.93 |
| LTC3772BETS8#TRMPBF | SOT-23 | E | $2.71 | $1.93 |
| LTC3772BETS8#TRPBF | SOT-23 | E | $2.71 | $1.91 |
