AT5503:Buck Converter

Part NumberData SheetSPICE ModelTypeEfficiency (%)RDS(ON) (mΩ)Frequency Typ (kHz)MinimumInput Voltage (V)MaximumInput Voltage (V)Output Current (A)Output Voltage (V)Standby Quiescent Current Typ (µA)
AT5503AT5503.pdf-Buck92-5004.5183ADJ1
Description

The AT5503 is a 500kHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 3A load with highefficiency, excellent line and load regulation. The AT5503 exhibits high efficiency at light load. The device integrates N-channel power MOSFET switch with low on-resistance. Current mode control provides fast transient response and cycle-by-cycle current limit. The AT5503 employs complete protection to ensure system security, including output Over Voltage Protection, input Under Voltage Lock Out, programmable soft-start, Over Temperature Protection and hiccup mode Short Circuit Protection.

Application
  • Monitor
  • TV
  • STB
  • Datacom
SO-8
AT5503.pdf AT5503