Linear Technology LT1009CH, LT1009S8, LT1009IZ, LT1009IS8, LT1009CZ Datasheet

LT1009 Series

2.5V Reference

FEATURES

■Maximum Initial Tolerance: 0.2%

■Guaranteed Temperature Stability

■Maximum 0.6Ω Dynamic Impedance

■Wide Operating Current Range

■Directly Interchangeable with LM136 for Improved Performance

■No Adjustments Needed for Minimum Temperature Coefficient

APPLICATIOUS

■Reference for 5V Systems

■8-Bit A/D and D/A Reference

■Digital Voltmeters

■Current Loop Measurement and Control Systems

■Power Supply Monitor

DESCRIPTIOU

The LT®1009 is a precision trimmed 2.5V shunt regulator diode featuring a maximum initial tolerance of only ±5mV. The low dynamic impedance and wide operating current range enhances its versatility. The 0.2% reference tolerance is achieved by on-chip trimming which not only minimizes the initial voltage tolerance but also minimizes the temperature drift.

Even though no adjustments are needed with the LT1009, a third terminal allows the reference voltage to be adjusted

±5% to calibrate out system errors. In many applications, the LT1009 can be used as a pin-to-pin replacement of the LM136 and the external trim network eliminated.

For a lower drift 2.5V reference, see the LT1019 data sheet.

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIOUN

2.5V Reference

Output Voltage

5V TO 35V			2.53
3.6k			2.52
		(V)				GUARANTEED
	TRIM	VOLTAGE	2.50					TYPICAL
	OUTPUT		2.51			MAXIMUM
LT1009	10k*
		REFERENCE
*DOES NOT AFFECT			2.49			MINIMUM
						GUARANTEED
TEMPERATURE COEFFICIENT.			2.48
±5% TRIM RANGE
	1009 TA01
			2.47	–25	0	25	50	75	100	125
			–50
					TEMPERATURE (°C)
									1009 TA02

1

LT1009 Series

ABSOLUTE

WAXIWUW

RATIUGS (Note 1)

Reverse Current ....................................................	20mA
Forward Current ...................................................	10mA
Storage Temperature Range .................	– 65°C to 150°C
Lead Temperature (Soldering, 10 sec)..................	300°C

Operating Temperature Range		0°C to 70°C
	LT1009/LT1009C ..................................
	LT1009I ...........................................	– 40°C to 85°C
	LT1009M (OBSOLETE) ...................	–55°C to 125°C

PACKAGE/ORDER IUFORWATIOU

	BOTTOM VIEW					ORDER PART					ORDER PART
	ADJ				+	NUMBER			TOP VIEW		NUMBER
						LT1009MH					LT1009CMS8
					–		NC	1	8	(+)
							NC	2	7	NC
						LT1009CH
							NC	3	6	(+)
							(–)	4	5	ADJ
											MS8 PART MARKING
		H PACKAGE							MS8 PACKAGE
							8-LEAD PLASTIC MSOP
3-LEAD TO-46 METAL CAN											LTQZ
TJMAX = 150°C, θJA = 440°C/ W, θJC = 80°C/ W							TJMAX = 150°C, θJA = 250°C/ W

OBSOLETE PACKAGE

Consider the MS8, S8 or Z Packages for Alternate Source

			TOP VIEW		ORDER PART	BOTTOM VIEW		ORDER PART
					NUMBER			NUMBER
	NC	1	8	(+)		ADJ +	–
					LT1009S8			LT1009CZ
	NC	2	7	NC
					LT1009IS8			LT1009IZ
	NC	3	6	(+)
	(–)	4	5	ADJ	S8 PART MARKING
						Z PACKAGE
			S8 PACKAGE		1009	3-LEAD PLASTIC TO-92
		8-LEAD PLASTIC SO				TJMAX = 100°C, θJA = 160°C/ W
	TJMAX = 150°C, θJA = 190°C/ W				1009I

Consult LTC Marketing for parts specified with wider operating temperature ranges.

AVAILABLE OPTIOUS

		TEMPERATURE		PACKAGE STYLE
	ACCURACY	COEFFICIENT	TO-46 (H)	MSOP-8	SO-8	TO-92
TEMPERATURE	(%)	°	OBSOLETE	(MS8)	(S8)	(Z)
		(ppm/ C)
0°C to 70°C	0.20	25	LT1009CH			LT1009CZ
	0.40	25		LT1009CMS8	LT1009S8
–40°C to 85°C	0.20	35				LT1009IZ
	0.40	35			LT1009IS8
–55°C to 125°C	0.20	35	LT1009MH

2

LT1009 Series

ELECTRICAL CHARACTERISTICS

The ● denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25°C.

								LT1009M				LT1009I		LT1009/LT1009C
SYMBOL				PARAMETER	CONDITIONS			MIN	TYP	MAX	MIN	TYP	MAX	MIN	TYP	MAX	UNITS
VZ				Reverse Breakdown	TA = 25°C, IR = 1mA,	H, Z Pkg		2.495	2.500	2.505	2.495	2.500	2.505	2.495	2.500	2.505	V
				Voltage		MS, S Pkg					2.49	2.50	2.51	2.49	2.50	2.51	V
VZ				Reverse Breakdown	400µA ≤ IR ≤ 10mA				2.6	6		2.6	10		2.6	10	mV
IR				Change with Current			●		3.0	10		3.0	12		3.0	12	mV
rZ				Reverse Dynamic	IR = 1mA				0.2	0.6		0.2	1.0		0.2	1.0	Ω
				Impedance			●		0.4	1.0		0.4	1.4		0.4	1.4	Ω
				Temperature Stability	TMIN ≤ TA ≤ TMAX		●			15			15		1.8	4	mV
VZ				Average Temperature	0°C ≤ TA ≤ 70°C				15	25		15	25		15	25	ppm/°C
Temp				Coefficient (Notes 2, 3)	– 40°C ≤ TA ≤ 85°C								35				ppm/°C
					– 55°C ≤ TA ≤ 125°C				25	35							ppm/°C
VZ				Long-Term Stability	TA = 25°C ±0.1°C, IR = 1mA				20			20			20		ppm/kHr
Time

Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired.

Note 2: Guaranteed by Design.

Note 3: Average temperature coefficient is defined as the total voltage change divided by the specified temperature change.

TYPICAL PERFORWAUCE CHARACTERISTICS

Reverse Characteristics

	10	–1
CURRENT (A)	10	–2
	10–3
REVERSE	10	–4						TJ = 25°C
				TJ = 125°C
												TJ = –55°C
	10	–5
				1.0							1.8			2.2
		0.5						1.4									2.6

REVERSE VOLTAGE (V)

1009 G01

FORWARD VOLTAGE (V)

Forward Characteristics

1.2

TJ = 25°C

1.0

0.8

0.6

0.4

0.2

0
0.001	0.01	0.1	1	10

FORWARD CURRENT (mA)

1009 G02

REVERSE VOLTAGE CHANGE (mV)

Reverse Voltage Change

5

4

3

2

1

0

0

4

8

12

16

20

REVERSE CURRENT (mA)

1009 G03

3