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PDF LD7301 Data sheet ( Hoja de datos )
| Número de pieza | LD7301 | |
| Descripción | ACPI-STR Controller | |
| Fabricantes | Leadtrend | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de LD7301 (archivo pdf) en la parte inferior de esta página. Total 15 Páginas | ||
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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  
LD7301/02
5VSB
5VIN
1Ω
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 
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 Ω
Leadtrend Technology Corporation
LD7301/02-DS-00 April 2006
11
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet LD7301.PDF ] | |
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