NEC PD16855A, PD16855B, PD16855C, PD16855D Technical data

UPD16855A

DATA SHEET

MOS INTEGRATED CIRCUIT

μPD16855A/B/C/D

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 mΩ 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
μPD16855BC	8-pin plastic DIP (300mil)
μPD16855AG	8-pin plastic SOP (225mil)
μPD16855BG	8-pin plastic SOP (225mil)
μPD16855CG	8-pin plastic SOP (225mil)
μPD16855DG	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

μPD16855

BLOCK DIAGRAM

IN (Input)

			7
OUT1	8			5	OUT2
(Output1)					(Output2)
	Ref.			Ref.
	Voltage			Voltage
	Over Current	Gate	Gate	Over Current
		Control	Control
	Detect			Detect
FLG1	2		UVLO	3	FLG2
(Flag Out1)					(Flag Out2)
			Thermal
			Shutdown
	6	1	4
	GND	CTL1	CTL2
		(Control Input1)	(Control Input2)

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.

2	Data Sheet S13020EJ1V0DS00

μPD16855

CONNECTION DIAGRAM (TOP VIEW)

CTL1	1		8	OUT1
FLG1	2		7	IN
FLG2	3		6	GND
CTL2	4		5	OUT2

			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 : 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 μPD16855A/B/C/D FUNCTION

	PART No.		Abstract of Function
		CTL Input Logic	Switch Operation with Over-Current Detect
	μPD16855AG	“H” active	Over-Current Limit Operation. Switch Off with CTL Input “L”
	μPD16855BC/BG	“L” active	Over-Current Limit Operation. Switch Off with CTL Input “H”
	μPD16855CG	“H” active	Switch Off regardless of CTL Input
	μPD16855DG	“L” active

Data Sheet S13020EJ1V0DS00

3

μPD16855

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

μPD16855AG (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

μPD16855BC/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

4	Data Sheet S13020EJ1V0DS00

μPD16855

μPD16855CG (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

μPD16855DG (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

Data Sheet S13020EJ1V0DS00

5

μPD16855

ABSOLUTE MAXIMUM RATINGS (TA = 25 °C)

Parameter

Symbol

Conditions

Ratings

Unit

Input Voltage

VIN

–0.3 to +6

V

Flag Voltage

VFLG

–0.3 to +6

V

Flag Current

IFLG

50

mA

Output Voltage

VOUT

VIN + 0.3

V

Output Current

IOUT

DC

+0.5(VIN = VCTL =5 V)

A

–0.1 (VIN = 0V, VOUT = 5V)

Pulse Width ≤ 100μs

+3

Single Pulse

Control Input Voltage

VCTL

–0.3 to +6

V

Power Dissipation

DIP

PD

400

mW

SOP

300

Operating Temperature Range

TA

–40 to +85

°C

Channel Temperature Range

TCH MAX

+150

°C

Storage Temperature Range

Tstg

–55 to +150

°C

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

RECOMMENDED OPERATING RANGE

Parameter

Symbol

Min

Typ

Max

Unit

Input Voltage

VIN

+4

+5.5

V

Operating Temperature Range

TA

0

+70

°C

6	Data Sheet S13020EJ1V0DS00

μPD16855

ELECTRICAL CHARACTERISTICS

DC CHARACTERISTICS (Unless otherwise specified, VIN = +5V; TA = +25°C)

Parameter	Symbol	Conditions		Min	Typ	Max	Unit
Circuit Current	IDD	VCTL = 0V (both 1 pin & 4 pin),			1	5	μA
(only μPD16855A/C)		OUT = open
		VCTL = VIN, OUT = open			1	1.5	mA
Circuit Current	IDD	VCTL = VIN (both 1 pin & 4 pin),			1	5	μA
(only μPD16855B/D)		OUT = open
		VCTL = 0V, OUT = open			1	1.5	mA
Low-level Input Voltage	VIL	CTL Pin				1.0	V
High-level Input Voltage	VIH	CTL Pin		2.0			V
Input Current of CTL pin	ICTL	VCTL = 0V			0.01	1	μA
		VCTL = VIN			0.01	1	μA
Output MOSFET On Resistance	RON	TA = 0 to +70 °C,	DIP		100	140	mΩ
		IOUT = 500 mA
			SOP		100	130
Output Leak Current	IO LEAK					10	μA
Over Current Detect Threshold	ITH	TA = 0 to +70 °C		0.6	0.9	1.25	A
Flag Output Resistance	RON F	IL = 10 mA			10	25	Ω
Flag Leak Current	IO LEAK F	VFLAG = 5 V			0.01	1	μA
Operating Voltage of	VUVLO	VIN : Up		3.2	3.5	3.7	V
Under Voltage Locked Out
		VIN : Down		3.0	3.3	3.5	V
Circuit
		Hysteresis		0.1	0.2	0.3	V
AC CHARACTERISTICS (Unless otherwise specified, VIN = +5 V; TA = +25 °C)
Parameter	Symbol	Conditions		Min	Typ	Max	Unit
Output Transition	tRISE	RL = 10 Ω each output		2.5		12	ms
Rising Time
Output Transition	tFALL	RL = 10 Ω each output				10	μs
Falling Time
Over Current Detect	tOVER			5		20	μs
Delay Time
CTL Input Low-Level Time	tCTL	CTL : H→L→H		20			μs
(only μPD16855A/C)
CTL Input High-Level Time	tCTL	CTL : L→H→L		20			μs
(only μPD16855B/D)

Data Sheet S13020EJ1V0DS00

7

μPD16855

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

CTL

10%

0 V

tRISE

tFALL

5 V

90% 90%

VOUT

10%

0 V

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

5 V/3.3 V

90%

CTL

0 V

tRISE

tFALL

5 V

90% 90%

VOUT

10%

0 V

8	Data Sheet S13020EJ1V0DS00

μPD16855

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

IOUT		ITH
VOUT	μ PD16855A
	tOVER
	μ PD16855C
FLG	90%
		tCTL
CTL	90%	90%

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

ITH

IOUT

μ PD16855B

VOUT

tOVER

μ PD16855D

FLG

90%

tCTL

CTL

10%

10%

Data Sheet S13020EJ1V0DS00

9