茂達 APW8813現貨庫存

DDR2 And DDR3 Power Solution Synchronous Buck Controller With 1.5A LDOThe APW8813/A integrates a synchronous buck PWM
controller to generate VDDQ, a sourcing and sinking LDO
linear regulator to generate VTT. It provides a complete
power supply for DDR2 and DDR3 memory system. It
offers the lowest total solution cost in system where space
is at a premium.
The APW8813/A provides excellent transient response
and accurate DC voltage output in either PFM or PWM
Mode. In Pulse Frequency Mode (PFM), the APW8813/A
provides very high efficiency over light to heavy loads with
loading-modulated switching frequencies. On TQFN4x4-
24A package, the Forced PWM Mode works nearly at constant
frequency for low-noise requirements.
The APW8813/A is equipped with accurate current-limit,
output under-voltage, and output over-voltage protections.
A Power-On-Reset function monitors the voltage on VCC
prevents wrong operation during power on.
The LDO is designed to provide a regulated voltage