- Input power from 1V to 16V
- The output voltage can be adjusted down to 0.6V
- Power Good Flag, Adjustable Soft-Start, and Output Enable facilitate power sequencing
- Reference accuracy: 1.5% (0°C - 125°C)
- Current limit for inductive resistors
- Soft start
- Switching frequency from 50 kHz to 2 MHz
- Typical minimum time of 40ns
- TSSOP-14 package
illustrate
The LM2742 is a high speed, synchronous, switching regulator controller. It is designed to control currents from 0.7A to 20A with conversion efficiencies as high as 95%. Power up and power-down sequencing is implemented with power good flag, adjustable soft-start and output enable functions. The LM2742 operates from a low current 5V bias and can be converted to 1V to 16V rails. Part uses a fixed frequency, voltage mode, PWM control architecture and switching frequency adjustable from 50kHz to 2MHz by setting an external resistor value. Current limiting is a low-side MOSFET that monitors the voltage on-resistance across the line to make the order drop by times 40ns, one of the best in the industry. The wide operating frequency range gives power supply designers the flexibility to fine-tune component size, cost, noise, and efficiency. An adaptive, non-overlapping MOSFET gate driver and high-side guidance architecture help further maximize efficiency. The drain voltage of the high-side power FET can be from 1V to 16V, and the output voltage can be adjusted down to 0.6V.
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- POL power module
- Cable modem
- Set-top box / home gateway
- The core power source for disarmament, demobilization and reintegration
- High-efficiency distributed power supply
- The core strength of local regulations
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