ACPI-STR Controller
ACPI-STR Controller
LD7301/02
4/13/2006
REV: 00
General Description
The LD7301/02 is an ACPI-compliant controller for ...
Description
ACPI-STR Controller
LD7301/02
4/13/2006
REV: 00
General Description
The LD7301/02 is an ACPI-compliant controller for the applications of microprocessor and computers. It integrates a switch controller to generate a 5VDL from ATX power supply, a linear controller VDDQ and a bus terminator VTT controller. As well, it supports DDRI and DDRII with dual modes.
The device also integrates a charge pump engine, which enables to drive a NMOS application. As well, the LD7301/02 also offers power OK status checking and reporting, under voltage detection, soft start and shutdown function necessary for complete ACPI implementation.
Features
Dual Modes of Configuration Under Voltage Protection Power OK status checking and reporting Soft Start Function Shutdown Function Drives all NMOS Designs +1, -1.5% accuracy for
2.6V (mode A) and 1.8V (mode B) DDR reverse plug in protection
Applications
ACPI-Compliant Power Regulation for Motherboard
The LD7301/02 is available in a space saving SSOP-20 package.
+ Patent Pending
Leadtrend Technology Corporation LD7301/02-DS-00 April 2006
1
LD7301/02
Typical Application
5VSB 5VIN
5VDUAL 1000µF
Shutdown
1Ω 1µF
1000µF
5VDRV
5VDLSB PWROK S3# S5#
VCC LD7301
DRV1 VDDQ BTDRV
VTT
VSET0
VSET1 VSET2
GND
BTSINK
SEL SS C1 C2 CHRPMP
0.1µF 0.1µF 0.1µF
5VSB
Fig. 1 The Application Circuit for Mode A of LD7301 Note: The LD7301 is for 5V Logic System
3.3VDUAL
2.6VDUAL 2000µF
1.3VDUAL 1000µF
Mode A DDRI
SEL VSET0 VSET1 VSET2
5V 0V 0...
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