XL1509A-3.3E1

XL1509A is a high-voltage, high-efficiency step-down DC-DC switching converter with a fixed switching frequency of 150kHz and an output current capability of up to 2A. The device supports a wide input voltage range of 4.5V to 50V and up to 100% duty cycle output. An integrated loop compensation module helps reduce the number of external components, lowering system cost and saving board space. The converter is available in an adjustable output voltage version as well as fixed output voltage versions of 3.3V, 5.0V, and 12V. The IC integrates thermal shutdown, output current limiting, and short-circuit protection. When short-circuit protection is activated, the switching frequency is reduced from 150kHz to approximately 30kHz.

Applications

• Automotive Electronics
• Industrial Control
• Communication Equipment
• IoT

Key features

• Recommended operating voltage range: 4.5V~50V
• Available in ADJ (adjustable), 3.3V, 5.0V, and 12V output voltage versions
• Output voltage range: 1.23V~48V
• Maximum duty cycle: 100%
• Feedback reference voltage accuracy: ±1.5%
• Minimum input-to-output voltage differential: 1.5V
• Fixed switching frequency: 150kHz
• Maximum switching current: 2A
• Integrated high-voltage power transistor
• Efficiency up to 90%
• Excellent line and load regulation
• EN pin with TTL shutdown function
• Integrated thermal shutdown protection
• Integrated current limiting protection
• Integrated short-circuit protection
• Operating temperature range: -40°C to 125°C
• Device HBM ESD rating: Class 3B
• SOP8 package