NEC PD16855A, PD16855B, PD16855C, PD16855D Technical data

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DUAL HIGH-SIDE SWITCH FOR USB APPLICATION

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.

DATA SHEET

MOS INTEGRATED CIRCUIT

µµµµ

PD16855A/B/C/D

Ω

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)

The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version.

Not all devices/types available in every country. Please check with local NEC representative for availability and additional information.

Document No. S13020EJ1V0DS00 (1st edition) Date Published February 1999 N CP(K) Printed in Japan

1998©

BLOCK DIAGRAM

IN (Input)

µµµµ

PD16855

OUT1

(Output1)

FLG1

(Flag Out1)

Ref.

Voltage

Over Current

Detect

GND

Gate

Control

CTL1

(Control Input1)

UVLO

Thermal

Shutdown

Gate

Control

CTL2

(Control Input2)

Ref.

Voltage

Over Current

Detect

OUT2

(Output2)

FLG2

(Flag Out2)

The internal resister doesn’t connect to input terminal of CTL1 (1 pin) and CTL2 (4 pin).

Note

Therefore the input level must be “H” or “L” even if these pins aren’t used.

Data Sheet S13020EJ1V0DS00

CONNECTION DIAGRAM (TOP VIEW)

1CTL1 OUT18

2FLG1 IN7

3FLG2 GND6

4CTL2 OUT25

8-Pin DIP/SOP

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 : Ac tive-L, Nch open-drain

6 GND Power G round 7 IN Power (Input) Power Supply : Source of MO S F ET

8/5 OUT1/OUT2 Output Output of Switch : Drain of MOSFET

µµµµ

PD16855

DESCRIPTION of

PART No.

PD16855AG “H” active Over-Current Limit Operation. Switch Off with CTL Input “L”

PD16855BC/BG “L” active Over-Current Lim i t Operation. Switch Off wit h CTL Input “H”

PD16855CG “H” active

PD16855DG “L” active

PD16855A/B/C/D FUNCTION

µµµµ

Abstract of Functi on

CTL Input Logic Switch Operation with Over-Current Detect

Switch Off regardless of CTL Input

Data Sheet S13020EJ1V0DS00

µµµµ

PD16855

PIN CONFIGURATION

PD16855AG (Active-H)

µµµµ

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 st andby m ode 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)

µµµµ

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

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

Data Sheet S13020EJ1V0DS00

PD16855CG (Active-H and Switch off with over-current detect)

µµµµ

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 st andby m ode 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)

µµµµ

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

µµµµ

PD16855

Data Sheet S13020EJ1V0DS00

µµµµ

PD16855

ABSOLUTE MAXIMUM RATINGS (TA = 25

Parameter Symbol Conditions Ratings Unit Input Voltage V Flag Voltage V Flag Current I Output Voltage V Output Current I

Control Input Voltage V

DIP 400Power Dissipation

SOP Operating Temperature Range T Channel Temperature Range T Storage Temperature Range T

The thermal shutdown circuit (operating temperature is more than 150 °C typ.) builds in this product.

Note

FLG

OUT

CTL

CH MAX

stg

°°°°

DC +0.5(VIN = V

Pulse Width ≤ 100µs

Single Pulse

–0.3 to +6 V –0.3 to +6 V

50 mA

VIN + 0.3 V

CTL

=5 V)

–0.1 (V

= 0V, V

OUT

= 5V)

–0.3 to +6 V

300

–40 to +85 °C

+150 °C

–55 to +150 °C

RECOMMENDED OPERATING RANGE

Parameter Symbol Min Typ Max Unit Input Voltage V Operating Temperature Range T

+4 +5.5 V

0+70°C

Data Sheet S13020EJ1V0DS00

ELECTRICAL CHARACTERISTICS DC CHARACTERISTICS (Unless otherwise specified, V

Parameter Symbol Conditions Min Typ Max Unit

= +5V; TA = +25°C)

µµµµ

PD16855

PD16855A/C)

(only

PD16855B/D)

(only

Low-level Input Voltage V High-level Input Voltage V

Output Leak Current I

O LEAK

Over Current Detect Threshold I Flag Output Resistance R Flag Leak Current I Operating Voltage of

O LEAK F

V Under Voltage Locked Out Circuit

CTL

ON F

UVLO

CTL

= 0V (both 1 pin & 4 pin),

OUT = open

CTL

= VIN, OUT = open 1 1.5 mA

CTL

= VIN (both 1 pin & 4 pin),

OUT = open

CTL

= 0V, OUT = open 1 1.5 mA CTL Pin 1.0 V CTL Pin 2.0 V

CTL

= 0V 0.01 1

CTL

= V TA = 0 to +70 °C,

OUT

= 500 mA

DIP 100 140Output MOSFET On Resis tance R SOP 100 130

0.01 1

µ µ

TA = 0 to +70 °C 0.6 0.9 1.25 A IL = 10 mA 10 25

FLAG

= 5 V 0.01 1

VIN : Up 3.2 3.5 3.7 V VIN : Down 3.0 3.3 3.5 V Hysteresis 0.1 0.2 0.3 V

ACircuit Current

AInput Current of CTL pin I A

Ω

AC CHARACTERISTICS (Unless otherwise specified, VIN = +5 V; TA = +25

Parameter Symbol Conditions Min Typ Max Unit

Output Transition Rising Time

Output Transition Falling Time

Over Current Detect Delay Time

CTL Input Low-Level Time

PD16855A/C)

(only

CTL Input High-Level Time

PD16855B/D)

(only

RISE

FALL

OVER

CTL

RL = 10 Ω each output 2.5 12 ms

RL = 10 Ω each output 10

520

CTL : H→L→H20

CTL : L→H→L20

°°°°

Data Sheet S13020EJ1V0DS00

MEASUREMENT POINT

Output Transition Rising Time (at ON)/Output Transition Falling Time (at OFF)

at the timing of CTL changing “L” to “H”/“H” to “L” for µPD16855A/C

5 V/3.3 V

µµµµ

PD16855

CTL

OUT

0 V

5 V

0 V

10%

RISE

90% 90%

at the timing of CTL changing “H” to “L”/“L” to “H” for µPD16855A/C

5 V/3.3 V

0 V

5 V

0 V

90%

RISE

90% 90%

CTL

OUT

FALL

10%

Data Sheet S13020EJ1V0DS00

Over Current Detect Delay Time/CTL Input Low-Level Time for µPD16855A/C

µµµµ

PD16855

IOUT

VOUT

FLG

CTL

tOVER

PD16855A

PD16855C

90%

90% 90%

ITH

tCTL

Over Current Detect Delay Time/CTL Input High-Level Time for µPD16855B/D

OUT

ITH

OUT

FLG

CTL

OVER

PD16855B

PD16855D

90%

CTL

10% 10%

Data Sheet S13020EJ1V0DS00

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