APU3048O View Datasheet(PDF) - Advanced Power Electronics Corp
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APU3048O Datasheet PDF : 17 Pages
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Technology Licensed from International Rectifier
APU3048
DUAL SYNCHRONOUS PWM CONTROLLER
CIRCUITRY AND LDO CONTROLLER
FEATURES
Dual Synchronous Controller in 16-Pin Package
with 1808 out-of-phase operation
LDO Controller with 40mA drive
Configured as 2-Independent PWM Controller
Flexible, Same or Separate Supply Operation
Operation from 4V to 25V Input
Internal 200KHz Oscillator
Soft-Start controls all outputs
Fixed Frequency Voltage Mode
500mA Peak Output Drive Capability
Programmable Outputs
RoHS Compliant
APPLICATIONS
DDR Memory Source Sink Vtt Application
Graphic Card
Hard Disk Drive
Power supplies requiring multiple outputs
PRELIMINARY DATA SHEET
DESCRIPTION
The APU3048 IC combines a Dual synchronous Buck
controller and a linear regulator controller, providing a
cost-effective, high performance and flexible solution for
multi-output applications. The Dual synchronous con-
troller is configured as 2-independent PWM controller.
APU3048 provides a separate adjustable output by driv-
ing a switch as a linear regulator. This device features an
internal 200KHz oscillator, under-voltage lockout for all
input supplies, an external programmable soft start func-
tion as well as output under-voltage detection that latches
off the device when an output short is detected.
TYPICAL APPLICATION
12V
5V
3.3V
Q1
VcH1 VcH2
HDrv1
Vcc
Q2
L1
1N4148
LDrv1
Q3
VOUT1
C6
C1
V OUT3
R1
C2
R2
C3 R3
C4 R4
VOUT3
U1 PGnd
Fb3
APU3048
Fb1
Comp1
Fb2
Comp2
HDrv2
LDrv2
Q4
1N4148
Q5
R5
R6
L2
VOUT2
R7
C7
SS
C5
Gnd
R8
Figure 1 - Typical application of APU3048 configured as 2-independent converter.
PACKAGE ORDER INFORMATION
TA (°C)
0 To 70
0 To 70
DEVICE
APU3048O
APU3048M
PACKAGE
16-Pin TSSOP
16-Pin SOIC NB
Data and specifications subject to change without notice.
1
200806093
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