LTC3709 Fast 2-Phase, No RSENSE™ Synchronous DC/DC Controller with Tracking/Sequencing
The LTC®3709 is a single output, dual phase, synchronous step-down switching regulator. The controller uses a constant on-time, valley current control architecture to deliver very low duty cycles without requiring a sense resistor. Operating frequency is selected by an external resistor and is compensated for variations in input supply voltage. An internal phase-locked loop allows the LTC3709 to be synchronized to an external clock.
A TRACK pin is provided for tracking or sequencing the output voltage among several LTC3709 chips or an LTC3709 and other DC/DC regulators. Soft-start is accomplished using an external timing capacitor.
Fault protection is provided by an output overvoltage comparator and an optional short-circuit shutdown timer. The current limit level is user programmable. A wide supply range allows voltages as high as 31V to step down to 0.6V.
Protected by U.S. Patents, including 5481178, 6476589, 6144194, 5847554, 6177678, 6304066, 6580258, 6674274, 6462525, 6593724
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LTC3709 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) * |
| LTC3709EG | SSOP | 36 | E | $5.83 | $4.90 |
| LTC3709EG#PBF | SSOP | 36 | E | $5.83 | $4.90 |
| LTC3709EG#TR | SSOP | 36 | E | $5.00 | |
| LTC3709EG#TRPBF | SSOP | 36 | E | $5.00 | |
| LTC3709EUH | QFN | 32 | E | $5.83 | $4.90 |
| LTC3709EUH#PBF | QFN | 32 | E | $5.83 | $4.90 |
| LTC3709EUH#TR | QFN | 32 | E | $5.00 | |
| LTC3709EUH#TRPBF | QFN | 32 | E | $5.00 |
LTC3709 数据手册及相关资料下载
- 数据手册(英文) : LTC3709 - Fast 2-Phase, No RSENSE Synchronous DC/DC Controller with Tracking/Sequencing.PDF
- 可靠性数据 : R384 Reliability Data .PDF
