DL4015

The DL4015 is a monolithic IC designed for a step-down DC/DC converter, and owe the ability of driving a 5A load without additional transistor. It saves board space. The external shutdown function can be controlled by logic level and then come into standby mode. The internal compensation makes feedback control having good line and load regulation without external design. Regarding protected function, thermal shutdown is to prevent over temperature operating from damage, and current limit is against over current operating of the output switch. If current limit function occurs and the feedback voltage (VFB) is down below 0.5V, the switching frequency will be reduced. The DL4015 operates at a switching frequency of 180KHz thus allow smaller sized filter Components than what would be needed with lower frequency switching regulators. Other features include a guaranteed ±4% tolerance on output voltage under specified input voltage and output load conditions, and ±10% on the oscillator frequency.

Key features

• Output Adjustable Voltage From 1.250V to 37V
• Fixed 180KHz Switching Frequency
• Voltage Mode Non-synchronous PWM Control
• ON/OFF Shutdown Control Input
• Wide 3.6V to 40V Input Voltage Range
• Output Load Current: 5A
• Low Power Standby Mode Built-in Switching MOSFET on Chip