The MAX17597ATE+ is a peak current mode controller for flyback and boost regulator in 16 pin TQFN package. It offers input thresholds suitable for low voltage DC to DC applications (4.5V to 36V) and also implements boost converter. The device contains built-in gate driver for external N channel MOSFETs. The MAX17597 includes an internal error amplifier with 1% accurate reference which eliminates need for an external reference. The switching frequency is programmable from 100KHz to 1MHz with an accuracy of 8% that allows optimization of magnetic and filter components resulting in compact and cost effective power conversion. For EMI sensitive applications, the device incorporates programmable frequency dithering scheme which enables low EMI spread spectrum operation. A programmable slope compensation scheme is provided to ensure stability of peak current mode control scheme. It is used in wide range DC input flyback/boost battery chargers & battery powered applications.
Feature
- Supply voltage range is 4.5V to 36V
- Operating temperature range from -40°C to 125°C
- Enable compact, cost effective and highly flexible isolated/nonisolated power supplies
- VIN supply current of 2mA (SW = 400KHz) and VIN supply shutdown current of 20µA (VEN = 0V)
- Input overvoltage protection, programmable soft start and slope compensation
- Peak current mode control provides excellent transient response
- Maximum duty cycle of 92.5%
- Integrated protection features enhance system reliability
- Adjustable current limit with external current sense resistor
- Hiccup mode short circuit protection and overtemperature protection
Applications
- Backup Battery Boost Converters
- Li+ Battery-Powered Applications
- Miniature Equipment
- Translators
