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PDF LD7302 Datasheet ( Hoja de datos )

Número de pieza LD7302
Descripción ACPI-STR Controller
Fabricantes Leadtrend 
Logotipo Leadtrend Logotipo

Total 15 Páginas
		
LD7302 Hoja de datos, Descripción, Manual
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

1 page

LD7302 pdf
LD7301/02
5VSB
5VIN
1
1µF
1000µF
5VDUAL
1000µF
5VDRV
5VDLSB
PWROK
S3#
S5#
VCC
LD7302
DRV1
VDDQ
BTDRV
VTT
VSET0
VSET1
VSET2
GND
BTSINK
SEL
SS C1 C2 CHRPMP
Shutdown
0.1µF 0.1µF
0.1µF
Fig.4 The Application Circuit for Mode B of LD7302
Note: LD7302 is for 3.3V logic system
3.3VDUAL
1.8VDUAL
2000µF
0.9VDUAL
1000µF
Mode B
DDRII
SEL
0V
0V
0V
0V
0V
0V
0V
0V
VSET0
0V
0V
0V
0V
3.3V
3.3V
3.3V
3.3V
VSET1
0V
0V
3.3V
3.3V
0V
0V
3.3V
3.3V
VSET2
0V
3.3V
0V
3.3V
0V
3.3V
0V
3.3V
VDDQ
1.8VDUAL
1.9VDUAL
2.0VDUAL
2.1VDUAL
2.2VDUAL
2.3VDUAL
2.4VDUAL
2.5VDUAL
VTT
0.90VDUAL
0.95VDUAL
1.00VDUAL
1.05VDUAL
1.10VDUAL
1.15VDUAL
1.20VDUAL
1.25VDUAL
Leadtrend Technology Corporation
LD7301/02-DS-00 April 2006
5

5 Page

LD7302 arduino
PARAMETER
Soft Start
Soft Start Current
Vss upper limit
Soft Start Shutdown Voltage Threshold
Charge Pump
Charge pump switching frequency
Others
PWROK pin output impedance
CONDITIONS
LD7301/02
MIN
TYP
MAX UNITS
6.5 µA
4.0 V
0.5 V
250 KHz
150
Leadtrend Technology Corporation
LD7301/02-DS-00 April 2006
11

11 Page


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