The LTC1622 boasts a ±1.9% output voltage accuracy and consumes only 350µA of quiescent current. For applications where efficiency is a prime consideration and the load current varies from light to heavy, the LTC1622 can be configured for Burst Mode™ operation. Burst Mode operation enhances low current efficiency and extends battery run time. Burst Mode operation is inhibited during synchronization or when the SYNC/MODE pin is pulled low to reduce noise and possible RF interference.
High constant operating frequency of 550kHz allows the use of a small inductor. The device can also be synchronized up to 750kHz for special applications. The high frequency operation and the available 8-lead MSOP package create a high performance solution in an extremely small amount of PCB area.
To further maximize the life of the battery source, the P-channel MOSFET is turned on continuously in dropout (100% duty cycle). In shutdown, the device draws a mere 15µA.
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) * |
---|---|---|---|---|
LTC1622CMS8#PBF | MS-8 | C | $2.35 | $2.05 |
LTC1622CMS8#TRPBF | MS-8 | C | $2.11 | |
LTC1622CS8#PBF | SO-8 | C | $2.10 | $1.85 |
LTC1622CS8#TRPBF | SO-8 | C | $1.91 | |
LTC1622IS8#PBF | SO-8 | I | $2.60 | $2.20 |
LTC1622IS8#TRPBF | SO-8 | I | $2.26 |
器件型号 | 描述 | 价格 |
---|---|---|
DC232A | LTC1622MS8 | Low Input Voltage Current Mode Step-Down DC/DC Converter, 2 to 8Vin, 1.8, 2.5, or 3.3Vout @ 800mA | $75.00 |