LTC3832 High Power Step-Down Synchronous DC/DC Controllers for Low Voltage Operation
The LTC®3832/LTC3832-1 are high power, high efficiency switching regulator controllers optimized for 3.3V-5V to 0.6V-3.xV step-down applications. A precision internal reference and feedback system provide ±1% output regulation over temperature, load current and line voltage variations. The LTC3832/LTC3832-1 use a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel MOSFET, providing an adjustable current limit without a current sense resistor.
The LTC3832/LTC3832-1 operate with an input supply voltage as low as 3V and with a maximum duty cycle of >91% over temperature. They include a fixed frequency PWM oscillator for low output ripple operation. The 300kHz free-running clock frequency can be externally adjusted or synchronized with an external signal from 100kHz to 500kHz. In shutdown mode, the LTC3832 supply current drops to <10µA. The LTC3832-1 is the SO-8 version without current limit, frequency adjustment and shutdown functions
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LTC3832 订购信息和价格参考Package Variations and Pricing
| 器件型号 | 封装 | 引脚 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) * |
| LTC3832-1ES8 | SO | 8 | E | $4.20 | $2.95 |
| LTC3832-1ES8#PBF | SO | 8 | E | $4.20 | $2.95 |
| LTC3832-1ES8#TR | SO | 8 | E | $3.01 | |
| LTC3832-1ES8#TRPBF | SO | 8 | E | $3.01 | |
| LTC3832EGN | SSOP | 16 | E | $4.46 | $3.10 |
| LTC3832EGN#PBF | SSOP | 16 | E | $4.46 | $3.10 |
| LTC3832EGN#TR | SSOP | 16 | E | $3.16 | |
| LTC3832EGN#TRPBF | SSOP | 16 | E | $3.16 |
