Semtech – TS30041/42: High Efficiency 1A/2A Current-Mode Synchronous Buck Converter


The TS30041 (1A) and TS30042 (2A) are DC/DC synchronous switching regulators with fully integrated power switches, internal compensation, and full fault protection. The switching frequency of 1MHz enables the use of small filter components resulting in minimal board space and reduced BOM costs. The TS30041/42 integrates a wide range of protection circuitry including input supply under-voltage lockout, output voltage soft start, current limit, and thermal shutdown. The TS30041/42 includes supervisory reporting through the PG (Power Good) open drain output to interface other components in the system.

• 1.5V to 5V fixed output voltage
• 0.9V to (VCC – 1V) adjustable version output voltage range
• 4.5V to 40V input voltage range
• Current mode PWM control with PFM mode
• Soft start for controlled startup with no overshoot
• SYNC function on EN/SYNC pin to control
switching frequency
• ± 2% output tolerance
• 1MHz ± 10% fixed switching frequency
• Up to 95% efficiency
• Voltage supervisor for VOUT
• Full protection for overcurrent, over-temperature
• 1k MSRP: $0.44