The LTC®3772B 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) * |
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LTC3772BEDDB#PBF | 3x2 DFN-8 | E | $2.73 | |
LTC3772BEDDB#TRMPBF | 3x2 DFN-8 | E | $2.73 | $1.93 |
LTC3772BEDDB#TRPBF | 3x2 DFN-8 | E | $2.73 | $1.91 |
LTC3772BETS8#PBF | SOT-23 | E | $2.73 | |
LTC3772BETS8#TRMPBF | SOT-23 | E | $2.71 | $1.93 |
LTC3772BETS8#TRPBF | SOT-23 | E | $2.71 | $1.91 |
器件型号 | 描述 | 价格 |
---|---|---|
DC924A | LTC3772BEDDB Demo Board | VIN = 2.75V to 8V, VOUT = 1.8V/2.5V/3.3V @ 2A | 联系凌力尔特 |