W83301 Winbond Electronics Corp America, W83301 Datasheet - Page 3

• Manufacturer Part Number: W83301
• Description: Acpi-str Controller
• Manufacturer: Winbond Electronics Corp America

1. General Description
2.Features
Confidential
computer applications. In substance, the part can mainly operate in alternative
configurations mode A and B – mode A provides a switch controller to generate a 5V
voltage from ATX power supply, a linear controller – STR1 (2.5V
termination controller – 1.25 V
current sinking and sourcing; and mode B provides a switch controller to generate a
5V
regulations – that is STR1 (2.5V
outputs can simply configured by
provide extra voltage up to 0.2V in each regulator output for more performance. In
order to reduce the customer’s cost, and simplify the circuit design, the W83301R
integrates a charge-pump engine into the chip to provide higher driving voltage for
single N-channel MOSFETs, that is the W83301R, can drive only N-channel
MOSFETs for all applications. In the other hand, the W83301R also offer PWOK and
over current detection to protect each output and soft-start protects all linear
controllers from rush current attack. The W83301R is available in a 20-pin SOP
package.
DL
Provides alternative configurations for flexible applications
Provide a switch to enable/disable 5V
Supports SDRAM/RDRAM/DDRAM ACPI-STR Functions
Drives all N-Channel MOSFETs
Power-Up Softstart for all controllers
Up to 0.2V incremental voltage on STR1/STR2 for over-clock application.
Under-Voltage Fault Monitor
Soft-Start function
20-Pin SOP Package
The W83301R is an ACPI-compliant controller for microprocessor and other
voltage from ATX power supply and three linear controllers for specific voltage
application
Mode A
Mode B
Provide a switch controller to generate 5V
Linear controller STR1–2.5V
Bus termination controller –1.25V
application to sinking and sourcing redundant current
Provide a switch controller to generate 5V
Linear controller STR1 – 2.5V
Linear controller STR2 – 3.3 V
Linear controller STR3 – 1.8V
Revision 0.6
DUAL
DUAL
), STR2 (3.3V
V
for high speed bus such as RDRAM/DDRAM
SET0
DUAL
1
DUAL
DUAL
DL
DUAL
, V
output in S5 state via 5V
(RDRAM/DDRAM application)
SET1
(Clock Gen. Application)
(Chipset Application)
(SDRAM Application)
DUAL
DUAL
. Besides, the W83301R also can
for high speed bus termination
) and STR3 (1.8 V
DUAL
DUAL
DUAL
DLEN
DUAL
Preliminary
), and a bus
pin for USB
W83301R
), all of the
DL