GENERAL DESCRIPTION
2 Key FEATURES
! ! ! ! ! ! ! ! ! ! ! ! ! An integrated current-limited 0.4Ω MOSFET delivers load currents up to 600mA. High switching frequencies (up to 200kHz) allow the use of small surface-mount inductors and output capacitors. The device is available in a TDFN-8 3x3mm pin package. Output Voltages: Fixed 5V or Adjustable Input Voltage Range: 4.5 to 20V Output Current: Up to 600mA 1.25V Lowest Output Voltage Efficiency: up to 96% Quiescent Supply Current: 12µA Power-OK Output Internal 0.4Ω P-Channel MOSFET Shutdown Current: 0.8µA 100% Maximum Duty Cycle for Low Dropout Current-Limited Architecture Thermal Shutdown TDFN-8 3x3mm Package 3 APPLICATIONS
The device is ideal for notebook computers, distributed power systems, keep-alive supplies, and any other battery-operated, portable device. Figure 1. Typical Application 4.5 to 20V 5 IN 4 LX D1 L1 5V + COUT FB 1 GND 2 8 OUT 7 SHDNN CIN 7 SHDNN 6 ILIMIT 8 AS1341 POK 3 6 ILIMIT 9 5 IN AS1341 OUT RPULL 3 POK 1 FB LX 4 2 GND Indicates High-Power Trace Revision 1.00 1 - 16 AS1341 Data Sheet - P i n o u t 4 Pinout Pin Assignments Figure 2.
austriamicrosystems AG
