Microsemi Corporation LX8586A-33CV, LX8586A-33CP, LX8586A-00CV, LX8586A-00CP, LX8586-33CV Datasheet

		LIN D O C #: 8586
		LX8586-xx/8586A-xx
		6 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S
T H E I N F I N I T E P O W E R O F I N N O V A T I O N		P R O D U C T I O N D A T A S H E E T

D E S C R I P T I O N

The LX8586/86A series ICs are low dropout three-terminal regulators with a minimum of 6A output current. Pentium® Processor, Power PCTM, Cyrix® 6x86TM and AMD-K5TM applications requiring fast transient response are ideally suited for this product family. The LX8586A is guaranteed to have

< 1.1V at 6A and the LX8586 < 1.3V at 6A dropout voltage, making them ideal to provide well-regulated outputs of 2.5V to 3.6V using a 5V input supply. Fixed versions are also available and specified in the Available Options table below.

Current limit is trimmed above 6.1A to ensure adequate output current and controlled short-circuit current.

On-chip thermal limiting provides protection against any combination of overload that would create excessive junction temperatures.

The LX8586/86A series devices are available in both through-hole versions of the industry-standard, 3-pin TO-220 and TO-247 power packages.

Along with the standard µP supply applications, the LX8586 series of products are ideal for Pentium® Pro Processor applications such as GTL+ Bus terminators (see application below).

P R O D U C T H I G H L I G H T

1.5V, 6A RE G U L AT O R

		H.S. (Note A)
From Silverbox	3.3V	LX8586		1.5V/6A	To GTL+
	IN	OUT
Power Supply					Terminator
	1500µF	ADJ	121Ω
				4x 1500µF
	Sanyo		±1%
				Sanyo
	6MV1500GX
				6MV1500GX
		24.3Ω
		±1%

K E Y F E AT U R E S

■THREE-TERMINAL ADJUSTABLE OR FIXED OUTPUT

■GUARANTEED < 1.1V HEADROOM AT 6A (LX8586A)

■GUARANTEED < 1.3V HEADROOM AT 6A (LX8586)

■OUTPUT CURRENT OF 6A MINIMUM

pFAST TRANSIENT RESPONSE

p1% VOLTAGE REFERENCE INITIAL

ACCURACY

pOUTPUT SHORT CIRCUIT PROTECTION

pBUILT-IN THERMAL SHUTDOWN

■EVALUATION BOARD AVAILABLE: REQUEST LXE9001 EVALUATION KIT

A P P L I C AT I O N S

■GTL+ BUS TERMINATORS

■PENTIUM PROCESSOR SUPPLIES

■POWER PC SUPPLIES

■MICROPROCESSOR SUPPLIES

■LOW VOLTAGE LOGIC SUPPLIES

■POST REGULATOR FOR SWITCHING SUPPLY

■LXE9001 EVALUATION BOARD FOR PENTIUM APPLICATIONS AVAILABLE. CONSULT FACTORY

■CYRIX 6x86TM

■AMD-K5TM AND AMD-K6TM

AVA I L A B L E O P T I O N S P E R PA R T #

	Part #		Output
			Voltage
	LX8586/86A-00		Adjustable
	LX8586/86A-33		3.3V

A P P L I C AT I O N O F LX8586 A S 1.5V GTL+ BU S TE R M I N AT O R	Other voltage options may be available —
	Please contact factory for details.
Note A: See application note, page 3.

PA C K A G E O R D E R I N F O R M AT I O N

TA (°C)			Dropout		P	Plastic TO-220		V	Plastic TO-247
			Voltage			3-pin			3-terminal
0 to 125			1.3V			LX8586-xxCP			LX8586-xxCV
			1.1V			LX8586A-xxCP			LX8586A-xxCV

"xx" refers to output voltage, please see table above.

F O R F U R T H E R I N F O R M AT I O N C A L L ( 7 1 4 ) 8 9 8 - 8 1 2 1

Copyright © 1996	11861 WESTERN AVENUE, GARDEN GROVE, CA. 92841	1
Rev. 1.0 12/96

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

LX8586-xx/8586A-xx

6 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S

P R O D U C T I O N D A T A S H E E T

	ABSOLUTE MAXIMUM RATINGS	(Note 1)
	Power Dissipation ..................................................................................	Internally Limited
	Input Voltage ................................................................................................................	10V
	Input to Output Voltage Differential ...........................................................................	10V
	Operating Junction Temperature
	Plastic (P Package) ................................................................................................	150°C
	Storage Temperature Range ......................................................................	-65°C to 150°C
	Lead Temperature (Soldering, 10 seconds) .............................................................	300°C

Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal.

THERMAL DATA

P PACKAGE:

THERMAL RESISTANCE-JUNCTION TO TAB, θJT	2.7°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA	60°C/W
V PACKAGE:
THERMAL RESISTANCE-JUNCTION TO TAB, θJT	1.6°C/W
THERMAL RESISTANCE-JUNCTION TO AMBIENT, θJA	35°C/W

Junction Temperature Calculation: TJ = TA + (PD x θJA).

The θJA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow.

PACKAGE PIN OUTS

TAB IS VOUT

3 VIN

2 VOUT

1 ADJ / GND*

P PACKAGE

(Top View)

* Pin 1 is GND for fixed voltage versions.

TAB ON REVERSE SIDE IS VOUT
3	VIN
2	VOUT
1	ADJ / GND*

V PACKAGE

(Top View)

* Pin 1 is GND for fixed voltage versions.

2		Copyright © 1996
		Rev. 1.0 12/96

P R O D U C T D A T A B O O K 1 9 9 6 / 1 9 9 7

LX8586-xx/8586A-xx

6 A L O W D R O P O U T P O S I T I V E R E G U L A T O R S

P R O D U C T I O N D A T A S H E E T

E L E C T R I C A L C H A R A C T E R I S T I C S

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8586-xx/8586A-xx with 0°C ≤ TA ≤ 125°C; VIN - VOUT = 3V; IOUT = 6A. Low duty cycle pulse testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.)

LX8586-00/86A-00 (Adjustable)

Parameter		Symbol	Test Conditions	LX8586/86A-00			Units
				Min.	Typ.	Max.
Reference Voltage		VREF	IOUT = 10mA, TA = 25°C	1.238	1.250	1.262	V
			10mA ≤ IOUT ≤ 6A, 1.5V ≤ (VIN - VOUT), VIN ≤ 7V, P ≤ PMAX	1.225	1.250	1.275	V
Line Regulation (Note 2)		VREF (VIN)	IOUT = 10mA, 1.5V ≤ (VIN - VOUT), VIN ≤ 7V		0.035	0.2	%
Load Regulation (Note 2)		VREF (IOUT)	VIN - VOUT = 3V, 10mA ≤ IOUT ≤ 6A		0.1	0.5	%
Thermal Regulation		VOUT (Pwr)	TA = 25°C, 20ms pulse		0.01	0.02	%/W
Ripple Rejection (Note 3)			VOUT = 3.3V, f =120Hz, COUT = 100µf Tantalum, VIN = 5V	60	83		dB
			CADJ = 10µF, TA = 25°C, IOUT = 6A
Adjust Pin Current		IADJ			55	100	µA
Adjust Pin Current Change		IADJ	10mA ≤ IOUT ≤ 6A, 1.5V ≤ (VIN - VOUT), VIN ≤ 7V		0.2	5	µA
Dropout Voltage	LX8586-00	V	VREF = 1%, IOUT = 6A		1.1	1.3	V
	LX8586A-00		VREF = 1%, IOUT = 6A		0.9	1.1	V
Minimum Load Current		IOUT(MIN)	VIN ≤ 7V		2	10	mA
Maximum Output Current		IOUT(MAX)	1.4V ≤ (VIN - VOUT), VIN ≤ 7V	6.1	8		A
Temperature Stability		VOUT (T)			0.25		%
Long Term Stability		VOUT (t)	TA = 125°C, 1000 hrs		0.3	1	%
RMS Output Noise (% of VOUT)		VOUT (RMS)	TA = 25°C, 10Hz ≤ f ≤ 10kHz		0.003		%

LX8586-33/86A-33 (3.3V Fixed)

	Parameter			Symbol	Test Conditions	LX8586-33/86A-33			Units
						Min.	Typ.	Max.
	Output Voltage			VOUT	VIN = 5V, IOUT = 0mA, TA = 25°C	3.267	3.3	3.333	V
					4.75V ≤ VIN ≤ 10V, 0mA ≤ IOUT ≤ 6A, P ≤ PMAX	3.235	3.3	3.365	V
	Line Regulation (Note 2)			VOUT	4.75V ≤ VIN ≤ 7V		1	6	mV
				(VIN)	4.75V ≤ VIN ≤ 10V		2	10	mV
	Load Regulation (Note 2)			VOUT (IOUT)	VIN = 5V, 10mA ≤ IOUT ≤ IOUT (MAX)		5	15	mV
	Thermal Regulation (Note 3)			VOUT(Pwr)	TA = 25°C, 20ms pulse		0.01	0.02	% / W
	Ripple Rejection (Note 3)				COUT = 100µF (Tantalum), IOUT = 6A, TA = 25°C	65	83		dB
	Quiescent Current			IQ	0mA ≤ IOUT ≤ IOUT (MAX) , 4.75V ≤ VIN ≤ 10V		4	10	mA
	Dropout Voltage		LX8586-33	V	VOUT = 1%, IOUT ≤ IOUT (MAX)		1.1	1.3	V
			LX8586A-33		VOUT = 1%, IOUT ≤ IOUT (MAX)		0.9	1.1	V
	Maximum Output Current			IOUT (MAX)	VIN ≤ 7A	6.1	8		A
	Temperature Stability (Note 3)			VOUT (T)			0.25		%
	Long Term Stability	(Note 3)		VOUT (t)	TA = 125°C, 1000 hours		0.3	1	%
	RMS Output Noise (% of VOUT) (Note 3)			VOUT (RMS)	TA = 25°C, 10Hz ≤ f ≤ 10kHz		0.003		%

Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation.

Note 3. These parameters, although guaranteed, are not tested in production.

Copyright © 1996	3
Rev. 1.0 12/96