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Электронный компонент: UPD16855CG

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MOS INTEGRATED CIRCUIT



PD16855A/B/C/D
DUAL HIGH-SIDE SWITCH FOR USB APPLICATION
1998
Document No. S13020EJ1V0DS00 (1st edition)
Date Published February 1999 N CP(K)
Printed in Japan
DATA SHEET
DESCRIPTION
This product is the power switch IC with over current limit, used for the power supply bus of the Universal-Serial-
Bus (USB).
2 circuit builds in the Pch power MOSFET in the switch part, and this product realizes low on resistance (100 m
TYP.) respectively.
And the over current detection, the thermal-shutdown circuit, an under voltage locked-out (UVLO) circuit whose
functions are necessary in the Host/HUB-controller of the USB standard are built in.
And the over-current-detect result can be reported to the controller by flag-pin.
This product builds in each two circuits of the power switch, control-pins and flag-pins, and this IC can be able to
control the power supply bus in 2 USB port.
There are four kinds of this product by the input logic of the control signal and switch operation in over-current
detect.
FEATURES
Pch power MOSFET, 2 circuit building in
Over-current detection circuit is built in and its result is outputted from flag-pin ("L" active)
Prevent from dropping power supply by over current limit circuit
Thermal shutdown circuit building in
Under Voltage Locked Out (UVLO) circuit building in
Switch on/off control is possible by the control-pin.
8 pin DIP/SOP package
ORDERING INFORMATION
PART NO. PACKAGE
PD16855BC 8-pin plastic DIP (300mil)
PD16855AG 8-pin plastic SOP (225mil)
PD16855BG 8-pin plastic SOP (225mil)
PD16855CG 8-pin plastic SOP (225mil)
PD16855DG 8-pin plastic SOP (225mil)
Data Sheet S13020EJ1V0DS00
2



PD16855
BLOCK DIAGRAM
Note The internal resister doesn't connect to input terminal of CTL1 (1 pin) and CTL2 (4 pin).
Therefore the input level must be "H" or "L" even if these pins aren't used.
Gate
Control
Ref.
Voltage
Over Current
Detect
Over Current
Detect
OUT2
(Output2)
FLG2
(Flag Out2)
OUT1
(Output1)
FLG1
(Flag Out1)
UVLO
IN (Input)
CTL1
(Control Input1)
Thermal
Shutdown
2
1
CTL2
(Control Input2)
4
GND
6
8
5
7
3
Ref.
Voltage
Gate
Control
Data Sheet S13020EJ1V0DS00
3



PD16855
CONNECTION DIAGRAM (TOP VIEW)
PIN CONFIGURATION
PIN No.
SYMBOL
I/O
FUNCTION
1/4
CTL1/CTL2
Input
Control : TTL Input
2/3
FLG1/FLG2
Output
Over Current Detect Flag : Active-L, Nch open-drain
6
GND
Power
Ground
7
IN
Power (Input)
Power Supply : Source of MOSFET
8/5
OUT1/OUT2
Output
Output of Switch : Drain of MOSFET
DESCRIPTION of



PD16855A/B/C/D FUNCTION
Abstract of Function
PART No.
CTL Input Logic
Switch Operation with Over-Current Detect
PD16855AG
"H" active
Over-Current Limit Operation. Switch Off with CTL Input "L"
PD16855BC/BG
"L" active
Over-Current Limit Operation. Switch Off with CTL Input "H"
PD16855CG
"H" active
PD16855DG
"L" active
Switch Off regardless of CTL Input
1
CTL1
OUT1
8
8-Pin DIP/SOP
2
FLG1
IN
7
3
FLG2
GND
6
4
CTL2
OUT2
5
Data Sheet S13020EJ1V0DS00
4



PD16855
PIN CONFIGURATION
(H:Hi-level, L:Low-level, ON:output ON state, OFF:output OFF state, X:H or L)



PD16855AG (Active-H)
CTL1
FLG1
OUT1
CTL2
FLG2
OUT2
Operating mode
H
H
ON
H
H
ON
normal mode
H
H
ON
L
H
OFF
only OUT1 is ON
L
H
OFF
H
H
ON
only OUT2 is ON
L
H
OFF
L
H
OFF
standby mode
H
L
ON
H
H
ON
only OUT1 is over-current detect
H
H
ON
H
L
ON
only OUT2 is over-current detect
X
L
OFF
X
L
OFF
TSD mode
X
L
OFF
X
L
OFF
UVLO mode



PD16855BC/BG (Active-L)
CTL1
FLG1
OUT1
CTL2
FLG2
OUT2
Operating mode
L
H
ON
L
H
ON
normal mode
L
H
ON
H
H
OFF
only OUT1 is ON
H
H
OFF
L
H
ON
only OUT2 is ON
H
H
OFF
H
H
OFF
standby mode
L
L
ON
L
H
ON
only OUT1 is over-current detect
L
H
ON
L
L
ON
only OUT2 is over-current detect
X
L
OFF
X
L
OFF
TSD mode
X
L
OFF
X
L
OFF
UVLO mode
Data Sheet S13020EJ1V0DS00
5



PD16855



PD16855CG (Active-H and Switch off with over-current detect)
CTL1
FLG1
OUT1
CTL2
FLG2
OUT2
Operating mode
H
H
ON
H
H
ON
normal mode
H
H
ON
L
H
OFF
only OUT1 is ON
L
H
OFF
H
H
ON
only OUT2 is ON
L
H
OFF
L
H
OFF
standby mode
H
L
OFF
H
H
ON
only OUT1 is over-current detect
H
H
ON
H
L
OFF
only OUT2 is over-current detect
X
L
OFF
X
L
OFF
TSD mode
X
L
OFF
X
L
OFF
UVLO mode



PD16855DG (Active-L and Switch off with over-current detect)
CTL1
FLG1
OUT1
CTL2
FLG2
OUT2
Operating mode
L
H
ON
L
H
ON
normal mode
L
H
ON
H
H
OFF
only OUT1 is ON
H
H
OFF
L
H
ON
only OUT2 is ON
H
H
OFF
H
H
OFF
standby mode
L
L
OFF
L
H
ON
only OUT1 is over-current detect
L
H
ON
L
L
OFF
only OUT2 is over-current detect
X
L
OFF
X
L
OFF
TSD mode
X
L
OFF
X
L
OFF
UVLO mode