PT1307-Step-up DC/DC Converter with Accurate Input Current Limit PDF文档下载
GENERAL DESCRIPTION
The PT1307 is a current mode DC-DC converter with accurate input current limit. It is suitable for use in topologies requiring low side MOSFET, such as boost, fly-back or SEPIC. The PT1307 has built in fault condition protection features such as short-circuit protection, and Thermal shut down protection. The PT1307 also has an OVLO function that locks out the switch when the input voltage is higher than 6.5V, although the, IN, and CS can stand up to 20V. The PT1307 provides programmable average current limiting with ±2% accuracy, which allows accurate limiting of the average current in the inductors, independent of peak current.
The PT1307 is available in SOT23-6.
FEATURES
±2% Programmable Average Current Limiting
1MHz Switching Frequency
Short-Circuit Protection
OVLO with Hysteresis
APPLICATIONS
Battery Chargers
Li-ion and USB Powered Systems
Portable Instruments
Step-up DC-DC Converters
Step-up/step-down and Isolated dc/dc converters
TYPICAL APPLICATIONS
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