- Input power from 2.2V to 16V
- The output voltage can be adjusted as low as 0.6V
- The power supply is well marked, and the adjustable soft-start and output enable facilitate power sequencing
- Output Overvoltage and Undervoltage Latching (LM2727)
- Output Overvoltage and Undervoltage Flags (LM2737)
- Reference accuracy: 1.5% (0°C - 125°C)
- No detective current limit
- Soft start
- Switches from 50 kHz to 2 MHz frequencies
- TSSOP - 14 package
illustrate
The LM2727 and LM2737 are high-speed, synchronous, switching regulator controllers. Their purpose is to control up to 95% conversion efficiency of 0.7A current 20A. The LM2727 is used to output overvoltage and undervoltage latching. For those applications where latching is not desired, the LM2737 can be used. The upper and lower sequencing of the power supply achieves good marking with the power supply, and the adjustable soft start and output enable functions. The LM2737 and LM2737 operate at a low current 5V bias and can convert from a 2.2V to 16V rail. The two devices feature a fixed frequency, voltage mode, PWM control structure, and adjustable switching frequency by adjusting the external resistance from 50kHz to 2MHz. The current limit is monitored across the low-side MOSFET, thereby increasing the resistance drop on low duty cycle operation. Fine-tuned component size, cost, efficiency, noise, and flexibility for power supply designers with a wide operating frequency range. Adaptive non-overlapping MOSFET gate drivers and high-side guide structures help further improve efficiency. The high-side power FET drain voltage is available from 2.2V to 16V, and the output voltage is adjustable as low as 0.6V.
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- Cable modem
- Set-top box/home gateway
- The core power of DDR
- Distributed power with high efficiency
- The core driving force of local regulations
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