- Input power from 2.2V to 16V
- The output voltage can be adjusted down to 0.6V
- Power Good Flag, Adjustable Soft-Start and Output Enable for easy power sequencing
- Output Overvoltage and Undervoltage Lockout (LM2727)
- Output Overvoltage and Undervoltage Flags (LM2737)
- Reference accuracy: 1.5% (0°C - 125°C)
- No sense resistor current limit
- Soft start
- Switch frequencies from 50 kHz to 2 MHz
- TSSOP-14 package
illustrate
The LM2727 and LM2737 are high-speed, synchronous, switching regulator controllers. Their purpose is to control a current of 0.7A with a conversion efficiency of up to 95% to 20A. The LM2727 output overvoltage and undervoltage lockout is used. For those applications where latching is undesirable, the LM2737 can be used. Power supply up and down sequencing implements power good flags, adjustable soft-start, and output enable functions. The LM2737 and LM2737 operate at low current 5V bias and can be converted from a 2.2V to 16V rail. Both devices feature a fixed-frequency, voltage-mode, PWM-controlled architecture with adjustable switching frequency and adjustable external resistors from 50kHz to 2MHz. Current limiting is monitored across the low-side MOSFETs, thereby increasing the resistance drop on low duty cycle operation. Fine-tuning component size, cost, efficiency, noise, and flexibility for power supply designers operating over a wide frequency range. An adaptive non-overlapping MOSFET gate driver and high-side guidance architecture help further improve efficiency. The high-side power FET drain voltage is available from 2.2V to 16V, and the output voltage is adjustable down to 0.6V.
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- Cable modem
- Set-top box / home gateway
- The core power of DDR
- High-efficiency distributed power supply
- The core motivation for local regulations
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