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參數資料
| 型號： | W83301R |
| 廠商： | WINBOND ELECTRONICS CORP |
| 元件分類： | 穩壓器 |
| 英文描述： | SUBMINIATURE PC BOARD RELAY |
| 中文描述： | DUAL SWITCHING CONTROLLER, PDSO20 |
| 封裝： | 0.209 INCH, SSOP-20 |
| 文件頁數： | 5/13頁 |
| 文件大小： | 221K |
| 代理商： | W83301R |
Publication Release Date: Jul., 2002
Revision 1.0
3
W83301DR-O
4. Pin Description
SYMBOL
Reserved
PIN
1
FUNCTION
Pin Reserved
BT Current Source.
Connect this pin to the gate of a suitable Nchannel
MOSFET for driving bus termination regulator output.
BT Sense.
Connect this pin to the bus termination regulator output.
BT Current Sink.
This pin is used to drive a N-channel MOSFET to sink the
redundant current in the high-speed bus.
Function Reserved.
Pull up this pin to +5VSB through a 1.5 Kohm resistor.
Power Ground.
Connect this pin to ground.
Power 5V
SB
.
Input 5V
SB
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
DL
voltage output. Pull-up internally.
Voltage Selection.
Combine with VSET2 to select output voltages of STR
regulators.
Voltage Selection.
Combine with VSET3 to select output voltages of STR
regulators.
S5 Signal.
Control signal governing the soft off state S5. Pull-up internally.
S3 Signal.
Control signal governing the soft off state S3. Pull-up internally.
3V
DL
Sense.
Connect this pin to the STR1 output.
3V
DL
Drive.
Connect this pin to the gate of a suitable N-channel MOSFET for
driving STR1 output.
5VSB Output Control.
Connect this pin to the gate of a N-MOSFET to output
5VSB power to 5V
DL
.
3.3V/5V Output Control.
Connect this pin to the gate of a NMOSFET to
output 3.3V/5V power to 3.3V
DL
/5V
DL
.
Power OK.
Open collector input/output. Used to indicate the ready of 5Vin
supply. If any STR supply 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
DL
. Soft starting avoids too much rush current during voltage setup.
STR1 Sense.
Connect this pin to the STR1 output.
STR1 Drive.
Connect this pin to the gate of a suitable N-channel MOSFET for
driving STR1 output.
Pin Reserved
BT
DRV
BT
SEN
BT
SINK
2
3
4
Reserved
Vss
5V
SB
C1
5
6
7
8
C2
9
ChrPmp
10
5V
DLEN
#
11
V
SET3
12
V
SET2
S5#
S3#
3V
SBSEN
3V
DLSB
13
14
15
16
17
5V
DLSB
18
3V
DRV
/5V
DRV
19
PWOK
20
SS
21
STR1
SEN
STR1
DRV
Reserved
22
23
24
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