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Advanced Power APU3037A

8-PIN SYNCHRONOUS PWM CONTROLLER

Overview

TopologyBuck Converter
Input voltage5 V
Switching frequency180-220 kHz
Output 13.3 V / 4 A

Description

The APU3037 controller IC is designed to provide a low cost synchronous Buck regulator for on-board DC to DC converter applications. With the migration of today’s ASIC products requiring low supply voltages such as 1.8V and lower, together with currents in excess of 3A, traditionallinear regulators are simply too lossy to be used when input supply is 5V or even in some cases with 3.3 input supply. The APU3037 together with dual N-channel MOSFETs such as AP60T03, provide a low cost solutionfor such applications. This device features an internal 200KHz oscillator (400KHz for "A" version), under-voltage lockout for both Vcc and Vc supplies, an external programmable soft-start function as well as output under-voltage detection that latches off the device when anoutput short is detected.

Features

  • Synchronous Controller in 8-Pin Package
  • Operating with single 5V or 12V -supply voltage
  • Internal 200KHz Oscillator(400KHz for APU3037A)
  • Soft-Start Function
  • Fixed Frequency Voltage Mode
  • 500mA Peak Output Drive Capability
  • Protects the output when controlFET is shorted
  • RoHS Compliant

Typical applications

  • DDR memory source sink Vtt application
  • Graphic Card
  • Low cost on-board DC to DC such as 5V to 3.3V,

More information

Products

Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples
744311470
STE ALT EAG CAD LTS PSP SPE IGS CADWE-HCI SMT Flat Wire High Current Inductor 4.7 6 3.5 7 19.5 33 Superflux SMT
Order Code Data­sheet
744311470
Samples
Order Code Data­sheet Downloads Product seriesL
(µH)
IR
(A)
LR
(µH)
ISAT
(A)
RDC
(mΩ)
fres
(MHz)
MaterialVersion Samples