AME5287
Description
The AME5287 is a Synchronous Rectified Step-Down Converter with internal power MOSFETs. It achieves 3A continuous output current over a wide switching frequency range with excellent load and line regulation.
Current mode operation provides fast transient response and eases of loop stabilization. Internal soft-start minimizes the inrush supply current at startup. The circuit protection includes cycle-by-cycle current limiting, output short circuit frequency protection and thermal shutdown. In shutdown mode, the regulator reduces the current less than 1µA of supply current.
This device is available in SOP-8/PP ,DFN-8 package with exposed pad for low thermal resistance. n Typical Application
L VIN 2.2µH 5V
IN SW
CIN 10µF
C2 Optional
EN OFF ON AME5287
C1 680p F
R3 25KΩ
P GND
FREQ RFREQ 18KΩ
R1 75KΩ
R2 24KΩ
VOUT 3.3V
COUT 22µF
Figure 1. 3.3V at 3A Step-Down Regulators. n Features l 3A Output Current l Stable with Low ESR Output Ceramic
Capacitors l Pre-Regulator...
