W83301 Winbond Electronics Corp America, W83301 Datasheet - Page 5

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

4.Pin Description
Confidential
STR
STR
STR
SYMBOL
STR
ChrPmp
STR
STR
5V
PWOK
5V
DRV3
DRV2
SEN2
5V
V
V
GND
S5#
S3#
Vcc
SS
C1
C2
DLEN
SET1
SET0
DLSB
DRV
DRV1
SEN3
SEN1
/BT
/BT
/BT
#
SINK
DRV
SEN
PIN
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
Mode A: BT Current Source. Connect this pin to the gate of a suitable N-channel
MOSFET for driving bus termination regulator output.
Mode B: STR2 Driver. Connect this pin to the gate of a suitable N-channel
MOSFET for driving STR2 output.
Mode A: BT Sense. Connect this pin to the bus termination regulator output.
Mode B: STR2 Sense. Connect this pin to the STR2 output.
Mode A: BT Current Sink. This pin is used to drive a N-channel MOSFET to sink
the redundant current in the high-speed bus.
Mode B: STR3 Driver. Connect this pin to the gate of a suitable N-channel
MOSFET for driving STR3 output.
Mode A: Function Reserved. Pull up this pin to +5VSB through a 1.5 Kohm
resistor.
Mode B: STR3 Sense. Connect this pin to the STR3 output.
Power Ground. Connect this pin to ground.
Power Vcc. Input 5VSB supply.
Charge Pump Cap. Attach flying capacitor between this pin and C2 to generate
internally used high voltage from 5V power supply.
Charge Pump Cap. Attach flying capacitor between this pin and C1 to generate
internally used high voltage from 5V power supply.
Charge Pump output. This pin produces voltage doubled 5V supply by charge-
pumping. Bypass with a 0.1uF capacitor.
5VDL Enable. Control 5V
S5 Status. Control signal governing the soft off state S5. Pull-up internally.
S3 Status. Control signal governing the soft off state S3. Pull-up internally.
Voltage Selection 1. Combine with VSET2 to select operation mode and output
voltages of STR regulators.
Voltage Selection 0. Combine with VSET1 to select operation mode and output
voltages of STR regulators.
5VSB Output Control. Connect this pin to the gate of a N-MOSFET to output
5VSB power to 5V
5V Output Control. Connect this pin to the gate of a N-MOSFET to output 5V
power to 5V
Power OK. Open collector input/output. Used to indicate the ready of 5Vin supply. If
any STR supply (only STR1 in mode A) occurs over current and induce under-
voltage, PWOK will be pull down.
Soft-Start. Attach a capacitor (0.033u) to this pin to determine the softstart rate. A
ramp generated by charging this capacitor with internal soft-start current (18uA) is
used to clamp the voltage rising slew rate of STR regulators and 5V
avoids too much rush current during voltage setup.
STR1 Sense. Connect this pin to the STR1 output.
STR1 Driver. Connect this pin to the gate of a suitable N-channel MOSFET for
driving STR1 output.
Revision 0.6
DL
.
DL
.
DL
3
voltage output. Pull-up internally.
FUNCTION
Preliminary
W83301R
DL
. Soft starting