Sipex Corporation SPX2920M3, SPX2920M3-2.5, SPX2920M3-3.3, SPX2920M3-5.0, SPX2920S Datasheet

SPX2920

	400mA Low Drop Out Voltage Regulator
	with Shutdown
	(PRELIMINARY INFORMATION)
FEATURES	APPLICATIONS
• Output Accuracy 2.5V, 3.3V, 5.0V, @ 400mA Output	• Battery Powered Systems
• Very Low Quiescent Current	• Cordless Telephones
• Low Dropout Voltage	• Radio Control Systems
• Extremely Tight Load And Line Regulation	• Portable/Palm Top/Notebook Computers
• Very Low Temperature Coefficient	• Portable Consumer Equipment
• Current & Thermal Limiting	• Portable Instrumentation
• Error Flag Warns Of Output Dropout	• Automotive Electronics
• Logic-Controlled Electronic Shutdown	• SMPS Post-Regulator
• Output Programmable From 1.24V to 26V	• Voltage Reference

PRODUCT DESCRIPTION

The SPX2920 is a low power voltage regulator. This device is an excellent choice for use in battery-powered applications such as cordless telephones, radio control systems, and portable computers. The SPX2920 features very low quiescent current (140 A Typ.) and very low dropout voltage. This includes a tight initial tolerance of 1% max and very low output temperature coefficient, making the SPX2920 useful as a low-power voltage reference.

The error flag output feature is used as power-on reset for warning of a low output voltage, due to a falling voltage input of batteries. Another feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. The SPX2920 is offered in 3-pin and 5-pin TO-220 package, SO-8 (same pin out as SPX2951), SOT-223, and surface mount TO-263 packages.

The regulator output voltage (of the 8-pin SO-8 and 5-pin TO-220 & TO-263) may be pin-strapped for a 2.5V, 3.3V and 5.0V or programmed from 1.24V to 26V with an external pair of resistors..

PIN CONNECTIONS

TO-263-5 Package	TO-220-5 Package	TO-263-3 Package	TO-220-3 Package	SOT-223 (M3)Package	8-Pin Surface Mount

			Five Lead Package Pin Functions:														VOUT	1	8	VIN
	SPX2920			SPX2920U51	SPX2920U52				SPX2920		SPX2920			SPX2920			SENSE	2	7	FEEDBACK
			SPX2920T51		SPX2920T52	SPX2920								1	2	3			SPX2920
1	2 3 4	5									1	2	3				SHUTDOWN	3		5V/ 3.3V TAP
			1)	ERROR	ADJ	1 2 3 4	5	1	2	3									6
			2)	VIN	SHUTDOWN									V	GND V		GND	4	5	ERROR
			3)	GND	GND									IN	OUT
														Top View
			4) VOUT		VIN														Top View
			5)	SHUTDOWN	VOUT

Top View

VIN GND VOUT

VIN GND VOUT

Front View

Top View

Front View

Rev. 10/30/00

SPX2920

ABSOLUTE MAXIMUM RATINGS

Power Dissipation..........................................	Internally Limited
Lead Temp. (Soldering, 5 Seconds) ................................	260°C
Storage Temperature Range ..............................	-65° to +150°C
Operating Junction Temperature Range (Note 9)
SPX2920................................................	-40C° to +125°C
ESD Rating ................................................................	2KV Min

Input Supply Voltage .....................................	+3.0V to +60V
Feedback Input Voltage ..................................	-1.5V to +30V
Shutdown Input Voltage..................................	-0.3V to +30V
Error Comparator Output ................................	-0.3V to +30V
ESD Rating ............................................................	2KV Min

ELECTRICAL CHARACTERISTICS at VIN =VOUT±15V,TA=25°C, unless otherwise specified. Boldface applies over the full operating temperature range.

	PARAMETER	CONDITIONS	Typ.		SPX2920				UNITS
		(Note 2)		Min		Max
	2.5V Version
	Output Voltage	1mA ≤IL ≤ 400mA	2.5	2.475		2.525			V
			2.5	2.450		2.550
	3.3V Version
	Output Voltage	1mA ≤IL ≤ 400mA	3.3	3.267		3.333			V
			3.3	3.234		3.366
	5V Version
	Output Voltage	1mA ≤IL ≤ 400mA	5.0	4.950		5.050			V
			5.0	4.9		5.10
	All Voltage Options
	Output Voltage		20			100			ppm/°C
	Temperature Coefficient	(Note 1)
	Line Regulation ( Note 3)	6V ≤ VIN ≤30V (Note 4)	0.03			0.1			%max
						0.40
	Load Regulation ( Note 3 )	IL = 1 to 400mA	0.04			0.20			%max
		IL = 0.1 to 1mA				0.30
	Dropout Voltage	IL = 1mA	60			100			mV
	( Note 5 )					150
		IL = 400mA	375			400
						500
	Ground Current	IL = 1mA	140			200			A
						300
		IL = 100mA	1.3			2			mA
						2.5
		IL = 250mA	5			9			mA
						12
		IL = 400mA	13			15			mA
						25
	Current Limit	VOUT = 0				1000			mA
						1200
	Thermal Regulation		0.05			0.2			%/w
	Output Noise, 10Hz to 100kHz	CL = 10 F	400						V Vrms
	IL = 100mA	CL = 100 F	260
	Adjustable Versions only		Typ		SPX2920
	Reference Voltage		1.235	1.223		1.247			V
				1.210		1.260
	Reference Voltage	Over Temperature (Note 6)		1.185		1.285			V
	Feedback Pin Bias Current		20			40			nA
						60
	Reference Voltage Temperature	(Note 7)	50						ppm/°C
	Coefficient
	Feedback Pin Bias Current		0.1						nA/°C
	Temperature Coefficient
							Rev. 10/30/00

							SPX2920
	(Continued)
	PARAMETER	CONDITIONS	Typ.		SPX2920			UNITS
		(Note 2)		Min		Max
	Error Comparator
	Output Leakage Current	V0H = 30V	0.01			1.00		A
						2.00
	Output Low Voltage	VIN = 4.5V	150			250		mV
		I0L = 400 A				400
	Upper Threshold Voltage	(Note 8)	60	40				mV
				25
	Lower Threshold Voltage	(Note 8)	75			95		mV
						140
	Hysteresis	(Note 8)	15					mV
	Shutdown Input
	Input logic Voltage		1.3					V
		Low (Regulator ON)				0.7
		High (Regulator OFF)		2.0
	Shut down Pin Input Current	VS = 2.4V	30			50		A
						100
		VS = 26V	450			600
						750
	Regulator Output Current in Shutdown		3	10				A
				20

Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided by the total temperature range.

Note 2: Unless otherwise specified all limits are guaranteed for Tj = 25°C, VIN = 6V, IL = 100 A and CL = 1 F. Additional conditions for the 8-pin versions are

feedback tied to 5V tap and output tied to output sense (VOUT = 5V) and VSHUTDOWN ≤ 0.8V.

Note 3: 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 4: Line regulation for the SPX2920 is tested at 150°C for IL = 1 mA. For IL = 100 A and TJ = 125°C, line regulation is guaranteed by design to 0.2%. See typical performance characteristics for line regulation versus temperature and load current.

Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential at very low values of programmed output voltage, the minimum input supply voltage of 2V ( 2.3V over temperature) must be taken into account.

Note 6: VREF ≤VOUT ≤ (Vin - 1V), 2.3 ≤Vin≤30V, 100 A≤IL≤ 250 mA, TJ ≤ TJMAX.

Note 7: Comparator thresholds are expressed in terms of a voltage differential at the feedback terminal below the nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95 mV x 5V/1.235 = 384 mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.5% guaranteed.

Note 8: VSHUTDOWN ≥ 2V, VIN ≤ 30V, VOUT =0, Feedback pin tied to 5V Tap.

Note 9: The junction -to-ambient thermal resistance of the TO-92 package is 180°C/ W with 0.4” leads and 160°C/ W with 0.25” leads to a PC board.

The thermal resistance of the 8-Pin DIP package is 105°C/W junction-to-ambient when soldered directly to a PC board. Junction-to-ambient thermal resistance for the
SOIC (S) package is 160°C/W.
		UNREGULATED DC
		7				8	1	5V @ 500mA
	+							MAX
								2
					+		180k Ω ..
								6
		3			_		ERROR
FROM							AMPLIFIER	330k Ω ..
TTL
							60k Ω ..	+
				+				5
					+			1 uF
			60 mV
					_		ERROR DETECTION
								TO CMOS OR
				+ 1.23V			COMPARATOR
								TTL
				REFERENCE				4

SPX2920 Block Diagram

Rev. 10/30/00