ACT4082A Overview
The ACT4082A is a current-mode step-down DC/DC converter that supplies up to 1.2A into 5V from a 12V input. 1.4MHz switching frequency allows the use of tiny external ponents, and internal loop pensation provides simple, stable power supplies with a minimum.
ACT4082A Key Features
- Wide 4.5V to 16V Input Voltage Range
- 1.2A Output Current (12VIN to 5VOUT)
- Output Adjustable Down to 0.81V
- 0.3Ω Internal Power MOSFET
- Up to 92% Efficiency
- Stable with Low ESR Ceramic Output Capacitors
- Fixed 1.4MHz Operating Frequency
- Internal Soft-Start Function
- Over Current Protection with Hiccup-Mode
- Thermal Shutdown