Linear Technology LM336AH-2.5, LM336BZ-2.5, LM136AH-2.5, LM336H-2.5, LM336Z-2.5 Datasheet

FEATURES

■Guaranteed Temperature Stability

■Maximum 0.6Ω Dynamic Impedance

■Adjustable for Minimum Temperature Coefficient

■Wide Operating Current Range

APPLICATIOUS

■Reference for 5V Systems

■8-Bit A/D and D/A Reference

■Digital Voltmeters

■Current Loop Measurement and Control Systems

■Power Supply Monitor

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

LM136-2.5/LM336-2.5

2.5V Reference

DESCRIPTIOU

The LM136-2.5 is a general purpose shunt regulator diode designed to operate over a wide current range while maintaining good stability with time and temperature. The third terminal allows either the temperature coefficient to be minimized or the reference voltage to be adjusted without changing the temperature coefficient. Because it operates as a shunt regulator it can be used equally well as a positive or negative reference.

The LM136-2.5 is available with initial tolerances as low as 1% in either a TO-46 metal can for hermetic requirements or a low cost TO-92 plastic package.

Linear’s advanced design, test and process techniques have optimized the LM136-2.5 to achieve superior performance and reliability over previous designs. For more demanding precision reference applications requiring very low initial tolerance and temperature coefficients, consult the LT1009 data sheet. A typical 2.5V reference with trim is shown below.

TYPICAL APPLICATIOU

2.5V Reference

5V TO 35V

3.6k

OUTPUT

	LM336-2.5	10k*
		TRIM

* DOES NOT AFFECT TEMPERATURE COEFFICIENT

136/336 TA01a

REVERSE VOLTAGE CHANGE (mV)

Reverse Voltage Change

3.5

TA = 25°C

3.0

2.5

2.0

1.5

1.0

0.5

0

0

2

4

6

8

10

REVERSE CURRENT (mA)

136/336 TA01b

1

LM136-2.5/LM336-2.5

ABSOLUTE

WAXIWUW

RATI

UGS

(Note 1)

Operating Temperature Range
	LM136-2.5 (OBSOLETE) ..............	–55°C to 125°C
	LM336-2.5 ..............................................	0°C to 70°C
Storage Temperature Range .................		– 65°C to 150°C

Lead Temperature (Soldering, 10 sec)..................	300°C
Reverse Current ....................................................	15mA
Forward Current ...................................................	10mA

PACKAGE/ORDER IUFORWATIOU

	BOTTOM VIEW	ORDER PART	BOTTOM VIEW
		NUMBER
	+		ADJ + –
		LM136H-2.5
	ADJ
	–	LM136AH-2.5
		LM336H-2.5
		LM336AH-2.5	Z PACKAGE
	H PACKAGE		3-LEAD PLASTIC TO-92
	3-LEAD TO-46 METAL CAN		TJMAX = 150°C, θJA = 160°C/W
	TJMAX = 150°C, θJA = 440°C/W		(NOTE 2)
	(NOTE 2)

OBSOLETE PACKAGE

Consider the Z Packages for Alternate Source

ORDER PART

NUMBER

LM336Z-2.5 LM336BZ-2.5

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

ELECTRICAL CHARACTERISTICS The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 2)

						LM136/LM136A			LM336/LM336B
SYMBOL			PARAMETER	CONDITIONS		MIN	TYP	MAX	MIN	TYP	MAX	UNITS
VZ			Reverse Breakdown Voltage	TA = 25°C, IR = 1mA
				LM136/LM336		2.440	2.490	2.540	2.390	2.490	2.590	V
				LM136A/LM336B		2.465	2.490	2.515	2.440	2.490	2.540	V
VZ			Reverse Breakdown Change	400µA ≤ IR ≤ 10mA
IR			with Current	TA = 25°C			2.6	6		2.6	10	mV
				TMIN ≤ TA ≤ TMAX	●		3.0	10		3.0	12	mV
rZ			Reverse Dynamic Impedance	IR = 1mA
				TA =25°C			0.2	0.6		0.2	1.0	Ω
				TMIN ≤ TA ≤ TMAX	●		0.4	1.0		0.4	1.4	Ω
VZ			Temperature Stability	VR Adjusted to 2.490V, IR = 1mA,
Temp				TMIN ≤ TA ≤ TMAX (See Figure 1)	●		12	18		1.8	6	mV
VZ			Long Term Stability	TA = 25°C ± 0.1°C, IR = 1mA			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: The LT1009 is an improved, low cost, pin for pin replacement for the “A” and “B” versions. For further information consult the LT1009 data sheet.

V+			2.490V
R	*	D1†	D1, D2 1N4148
1mA		5k	* ADJUST TO 2.490
			† ANY SILICON
		D2†	SIGNAL DIODE
			136/336 F01

Figure 1. Adjusting the LM336 for Minimum Temperature Coefficient

2