LTC3831-1 High Power Synchronous Switching Regulator Controller for DDR Memory Termination
The LTC®3831-1 is a high power, high efficiency switching regulator controller designed for DDR memory termination. The LTC3831-1 generates an output voltage equal to 1/2 of an external supply or reference voltage. The LTC3831-1 uses a synchronous switching architecture with N-channel MOSFETs. Additionally, the chip senses output current through the drain-source resistance of the upper N-channel FET, providing an adjustable current limit without a current sense resistor.
The LTC3831-1 operates with input supply voltage as low as 3V and with a maximum duty cycle of >91%. It includes 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 above 500kHz. In shutdown mode, the LTC3831-1 supply current drops to <10µA
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LTC3831-1 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) * |
| LTC3831EGN | SSOP | 16 | E | $3.43 | $2.90 |
| LTC3831EGN#PBF | SSOP | 16 | E | $3.43 | $2.90 |
| LTC3831EGN#TR | SSOP | 16 | E | $2.96 | |
| LTC3831EGN#TRPBF | SSOP | 16 | E | $2.96 | |
| LTC3831EGN-1 | SSOP | 16 | E | $4.29 | $2.90 |
| LTC3831EGN-1#PBF | SSOP | 16 | E | $4.29 | $2.90 |
| LTC3831EGN-1#TR | SSOP | 16 | E | $2.96 | |
| LTC3831EGN-1#TRPBF | SSOP | 16 | E | $2.96 | |
| LTC3831IGN#PBF | SSOP | 16 | I | $5.29 | $3.70 |
| LTC3831IGN#TRPBF | SSOP | 16 | I | $3.76 |
LTC3831-1 数据手册及相关资料下载
- 数据手册(英文) : LTC3831-1 - High Power Synchronous Switching Regulator Controller for DDR Memory Termination.PDF
- 可靠性数据 : R320 Reliability Data .PDF
