LM2731是TI公司的一款转换器（集成开关）产品，LM2731是采用 SOT-23 封装的 0.6/1.6 MHz 升压转换器，具有 22V 内部 FET 开关，本页介绍了LM2731的产品说明、应用、特性等，并给出了与LM2731相关的TI元器件型号供参考。
LM2731 - 采用 SOT-23 封装的 0.6/1.6 MHz 升压转换器，具有 22V 内部 FET 开关 - 转换器（集成开关） - DC/DC开关稳压器 - TI公司（Texas Instruments，德州仪器）
- 22-V DMOS FET Switch
- 1.6-MHz (X Option), 0.6-MHz (Y Option) Switching Frequency
- Low RDS(ON) DMOS FET
- Switch Current Up to 1.8 A
- Wide Input Voltage Range (2.7 V to 14 V)
- Low Shutdown Current (<1 µA)
- 5-Lead SOT-23 Package
- Uses Tiny Capacitors and Inductors
- Cycle-by-Cycle Current Limiting
- Internally Compensated
- White LED Current Sources
- PDAs and Palm-Top Computers
- Digital Cameras
- Portable Phones and Games
- Local Boost Regulators
The LM2731 switching regulators are current-mode boost converters operating at fixed frequencies of 1.6 MHz (X option) and 600 kHz (Y option).
The use of SOT-23 package, made possible by the minimal power loss of the internal 1.8-A switch, and use of small inductors and capacitors result in the highest power density of the industry. The 22-V internal switch makes these solutions perfect for boosting to voltages up to 20 V.
These parts have a logic-level shutdown pin that can reduce quiescent current and extend battery life.
Protection is provided through cycle-by-cycle current limiting and thermal shutdown. Internal compensation simplifies design and reduces component count.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| LM2731 | SOT-23 (5) | 1.60 mm × 2.90 mm |
