ACT4088
Overview
The ACT4088 is a current-mode step-down DC/DC converter that supplies up to 1.5A into 5V from a 12V input. 1.4MHz switching frequency allows the use of tiny external components, and internal loop compensation provides simple, stable power supplies with a minimum of external components. Optimized for use with ceramic input and output capacitors, the ACT4088 provides a very compact 1.5A power supply for space constrained mobile and consumer applications.
- Wide 4.5V to 28V Input Voltage Range
- 1.5A 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
