MAXIM MAX6006, MAX6009 Technical data

General Description

The MAX6006–MAX6009 ultra-low-power shunt refer­ences are ideal for space-critical and low-power appli­cations. They are offered in 3-pin SOT23 packages,
and the minimum operating current is guaranteed to be
<1µA. The devices feature low temperature coefficients
of <30ppm/°C and initial accuracy of better than 0.2%.

Available in +1.25V, +2.048V, +2.5V, and 3V output
voltages, the MAX6006–MAX6009 have references of
+1.25V, +2.048V, +2.5V, and +3.0V, respectively. The
devices can be used as lower-power, higher-precision
upgrades to the ICL8069, LM385, LT1004, and LM4040
references. The MAX6006–MAX6009 are available in
two grades: A and B. The A grade features a tempera­ture coefficient of 30ppm/°C over the extended temper­ature range of -40°C to +85°C, with an initial accuracy
of 0.2%. Grade B features a temperature coefficient of
75ppm/°C with an initial accuracy of 0.5%. MAX6006
in+1.25V and MAX6008 in +2.5V are offered in 8-pin
SOIC packages, as plug in upgrades for LT1004 and
LM285.

________________________Applications

Battery-Powered Equipment

Portable Meters

Precision Regulators

A/D and D/A Converters

Features

♦ Ultra-Low Operating Current: Guaranteed <1µA

♦ Small 3-Pin SOT23 Package

♦ Initial Voltage Accuracy: 0.2%

♦ Temperature Coefficient: 30ppm/°C max

♦ Temperature Range: -40°C to +85°C

♦ Factory-Trimmed Output Voltages: +1.25V,

+2.048V, +2.5V, +3.0V

♦ Wide Operating Range: 1µA to 2mA

MAX6006–MAX6009

1µA SOT23 Precision Shunt

Voltage Reference

________________________________________________________________ Maxim Integrated Products 1

Pin Configuration

V

S

I

RMIN

+ I

L

I

L

I

RMIN

R

BIAS

V

OUT

V

R

MAX6006
MAX6007
MAX6008
MAX6009

0.01µF

R

BIAS

=

VS - V

R

IL + I

RMIN

Typical Operating Circuit

19-1730; Rev 0; 8/00

For free samples and the latest literature, visit www.maxim-ic.com or phone [phone].
For small orders, phone [phone].

Selector Guide

Ordering Information appears at end of data sheet

OUTPUT

PART

MAX6006A 1.25 0.2 30

MAX6006B 1.25 0.5 75

MAX6007A 2.048 0.2 30

MAX6007B 2.048 0.5 75

MAX6008A 2.5 0.2 30

MAX6008B 2.5 0.5 75

MAX6009A 3.0 0.2 30

MAX6009B 3.0 0.5 75

VOLTAGE

(V)

INITIAL

ACCURACY

(%)

TEMPERATURE

COEFFICIENT

(ppm/°C)

TOP VIEW

1

OUT

GND

2

SOT23-3

3 I.C.

MAX6006
MAX6007
MAX6008
MAX6009

N.C.

N.C.

1

2

3

4

SO

87OUT

N.C.N.C.

OUT

6

N.C.GND

5

MAX6006–MAX6009

1µA SOT23 Precision Shunt
Voltage Reference

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS—MAX6006

(TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

Operating Current (OUT to GND) ......................................20mA

Forward Current (GND to OUT) ..........................................20mA

Continuous Power Dissipation (T

A

= +70°C)

3-Pin SOT23 (derate 4mW/°C above +70°C)..............320mW

8-Pin SO (derate 5.48mW/°C above +70°C)...............471mW

Operating Temperature Range ...........................-40°C to +85°C

Storage Temperature Range .............................-65°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

p-p

Reverse Breakdown Voltage V

Minimum Operating Current I

Reverse Breakdown Change
with Current

Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 1.5 Ω

Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz 30 µV

Temperature Coefficient
(Note 3)

Long-Term Drift 1000h at TA = +25°C 150 ppm

Thermal Hysteresis (Note 4) 200 ppm

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

TA = +25°C,

R

I

= 1.2µA

R

RMIN

TC I

VR change <0.2% from VR at IR = 1.2µA 0.5 1.0 µA

IR = 1.2µA to 200µA 1.0

= 200µA to 2mA 2.0

I

R

= 1.2µA

R

MAX6006A (0.2%) 1.2475 1.2500 1.2525

MAX6006B (0.5%) 1.2438 1.2500 1.2563

MAX6006A 30

MAX6006B 75

V

mV

ppm/°C

MAX6006–MAX6009

1µA SOT23 Precision Shunt

Voltage Reference

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS—MAX6007

(TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

ELECTRICAL CHARACTERISTICS—MAX6008

(TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

p-p

p-p

Reverse Breakdown Voltage V

Minimum Operating Current I

Reverse Breakdown Change
with Current

Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 1.8 Ω

Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz 50 µV

Temperature Coefficient
(Note 3)

Long-Term Drift 1000h at TA = +25°C 150 ppm

Thermal Hysteresis (Note 4) 200 ppm

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

R

RMIN

TC I

TA = +25°C,
I

= 1.2µA

R

VR change <0.2% from VR at IR = 1.2µA 0.5 1.0 µA

IR = 1.2µA to 200µA 1.3

I

= 200µA to 2mA 2.3

R

= 1.2µA

R

MAX6007A (0.2%) 2.0439 2.048 2.0521

MAX6007B (0.5%) 2.0378 2.048 2.0582

MAX6007A 30

MAX6007B 75

ppm/°C

Reverse Breakdown Voltage V

Minimum Operating Current I

Reverse Breakdown Change with
Current

Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 2

Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz 60

Temperature Coefficient
(Note 3)

Long-Term Drift 1000h at TA = +25°C 150 ppm

Thermal Hysteresis (Note 4) 200 ppm

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

R

RMIN

TC I

TA = +25°C,
I

= 1.2µA

R

VR change <0.2% from VR at IR = 1.2µA 0.5 1.0 µA

IR = 1.2µA to 200µA 1.5

= 200µA to 2mA 2.5

I

R

= 1.2µA

R

MAX6008A (0.2%) 2.4950 2.5000 2.5050

MAX6008B (0.5%) 2.4875 2.5000 2.5125

MAX6008A 30

MAX6008B 75

µ

ppm/°C

V

mV

V

mV

Ω

V

Typical Operating Characteristics

(CL = 0.01µF, TA = +25°C, unless otherwise noted.)

-3.0

-2.0

-2.5

-1.0

-1.5

0

-0.5

0.5

-50 0 50 100

TEMPERATURE DRIFT

MAX6006/9-01

TEMPERATURE (°C)

REFERENCE VOLTAGE CHANGE (mV)

IR = 1.2µA
V

OUT

= 2.5V

0.001 0.10.01 1 10

MAX6006

V

OUT

vs. CURRENT

MAX6006/9-02

REVERSE CURRENT (mA)

REVERSE VOLTAGE CHANGE (mV)

2.5

0

0.5

1.5

2.0

1.0

TA = +25°C

TA = +85°C

TA = -40°C

MAX6006

STARTUP

MAX6006/9-03

0

1.5V

1.2µA

20ms/div

MAX6006–MAX6009

1µA SOT23 Precision Shunt
Voltage Reference

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS—MAX6009

(TA= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)

p-p

Note 1: All devices are 100% production tested at TA= +25°C and are guaranteed by design for TA= T

MIN

to T

MAX

, as specified.

Note 2: This parameter is guaranteed by the “reverse breakdown change with current” test.
Note 3: TC is measured by the “box” method; i.e., (V

MAX

- V

MIN

) / (T

MAX

- T

MIN

).

Note 4: Thermal hysteresis is defined as the change in the +25°C output voltage after cycling the device from T

MIN

to T

MAX

.

Reverse Breakdown Voltage V

Minimum Operating Current I

Reverse Breakdown Change
with Current

Reverse Dynamic Impedance IR = 1.2µA to 2mA (Note 2) 2.2 Ω

Low-Frequency Noise IR = 1.2µA, f = 0.1Hz to 10Hz 75 µV

Temperature Coefficient
(Note 3)

Long-Term Drift 1000h at TA = +25°C 150 ppm

Thermal Hysteresis (Note 4) 200 ppm

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

R

RMIN

TA = +25°C,
I

= 1.2µA

R

VR change <0.2% from VR at IR = 1.2µA 0.5 1.0 µA

MAX6009A (0.2%) 2.9940 3.000 3.0060

MAX6009B (0.5%) 2.9850 3.000 3.0150

IR = 1.2µA to 200µA 1.7

= 200µA to 2mA 2.7

I

R

TC I

= 1.2µA

R

MAX6009A 30

MAX6009B 75

ppm/°C

V

mV

MAX6006–MAX6009

1µA SOT23 Precision Shunt

Voltage Reference

_______________________________________________________________________________________ 5

Typical Operating Characteristics (continued)

(CL = 0.01µF, TA = +25°C, unless otherwise noted.)

MAX6006

0.01Hz TO 10Hz NOISE

MAX6006/9-04

TIME (2s/div)

NOISE VOLTAGE (20µ/div)

1.2µA

1000

1

0.01 100 1000

MAX6006

OUTPUT IMPEDANCE vs. FREQUENCY

10

100

MAX6006/9-05

FREQUENCY (kHz)

IMPEDANCE (Ω)

0.1

10

1

IR = 6µA,

∆I

R

= 1.2µA

0.001 0.10.01 1 10

MAX6009

V

OUT

vs. CURRENT

MAX6006/9-06

REVERSE CURRENT (mA)

REVERSE VOLTAGE CHANGE (mV)

2.5

0

0.5

1.5

2.0

1.0

TA = +85°C

TA = +25°C

TA = -40°C

MAX6009
STARTUP

MAX6006/9-07

0

3V

20ms/div

1.2µA

1000

1

0.01 100 1000

MAX6009

OUTPUT IMPEDANCE vs. FREQUENCY

10

100

MAX6006/9-09

FREQUENCY (kHz)

IMPEDANCE (Ω)

0.1

10

1

IR = 6µA,
∆ I

R

= 1.2µA

MAX6009

0.01Hz TO 10Hz NOISE

MAX6006/9-08

NOISE VOLTAGE (20µV/div)

TIME (2s/div)

MAX6006–MAX6009

1µA SOT23 Precision Shunt
Voltage Reference

6 _______________________________________________________________________________________

Detailed Description

The MAX6006–MAX6009 are precision, two-terminal,
series bandgap voltage references. On-chip thin-film
resistors are laser trimmed to provide 0.2% output volt­age accuracies. Voltages of +1.25V, +2.048V,+2.5V,
and +3.0V are available in the space-saving SOT23
package (2.1mm ✕2.7mm).

Applications Information

Output/Load Capacitance

For devices in this family, OUT needs to be bypassed
to GND with a 0.01µF or larger capacitor. In applica­tions where the load or the supply can experience step
changes, additional capacitance will reduce the
amount of overshoot (or undershoot) and assist the cir­cuit’s transient response.

Output Voltage Hysteresis

Output voltage hysteresis is the change in the output
voltage at T

A

= +25°C before and after the device is
cycled over its entire operating temperature range.
Hysteresis is caused by differential package stress
appearing across the bandgap core transistors. The
temperature hysteresis value is typically less than
200ppm.

Turn-On Time

The output capacitance and bias current of the
MAX6006–MAX6009 greatly affects turn-on settling
time. In the Typical Operating Characteristics, turn-on
time is shown with a 10nF output capacitor and a 1.2µA
bias current. Under these conditions, the MAX6006–
MAX6009 settle in 40ms. Settling time will linearly
decrease in proportion to the circuit’s bias current.

Typical Applications

In the typical shunt regulator application shown in
Figure 1, R

BIAS

is used to set the current through the
load (IL) and the current through the shunt regulator
(I

RMIN

). There are two worst-case situations that R

BIAS

needs to be sized for:

1) R

BIAS

must be small enough that when VS(supply
voltage) is at its minimum and ILis at its maximum,
I

RMIN

is equal to at least the minimum operating
current of the shunt regulator.

2) R

BIAS

must be large enough that when VSis at its
maximum and ILis at its minimum, I

RMIN

is <2mA.

Pin Description

Figure 1. Typical Application Circuit

PIN NAME FUNCTION

SOT23 SO

1 6, 8 OUT

24

3 — IC Internally connected test point. Leave this pin unconnected, or connect to GND.

— 1, 2, 3, 5,7N.C. No connection. Not internally connected.

GND Ground

Output Voltage. Bias OUT with a pullup resistor to a potential greater than OUT. Bypass OUT
to GND with a 0.01µF or larger capacitor.

V

S

I

+ I

RMIN

L

R

BIAS

I

MAX6006
MAX6007
MAX6008
MAX6009

R

=

BIAS

IL + I

VS - V

RMIN

V

R

R

I

RMIN

L

V

OUT

MAX6006–MAX6009

1µA SOT23 Precision Shunt

Voltage Reference

_______________________________________________________________________________________ 7

Figure 2. Precision 1µA to 1mA Current Sources

Ordering Information

Chip Information

TRANSISTOR COUNT: 60
PROCESS: BiCMOS

MAX6008 MAX6008

R1

200k

I

OUT

-1.0V TO -7V

PART

M A X6 0 0 6AE UR- T -40°C to +85°C 3 SOT23 FZGH

MAX6006AESA -40°C to +85°C 8 SO —

M AX 6006BE U R-T -40°C to +85°C 3 SOT23 FZGI

MAX6006BESA -40°C to +85°C 8 SO —

M A X6 0 0 7AE UR- T -40°C to +85°C 3 SOT23 FZGK

M AX 6007BE U R-T -40°C to +85°C 3 SOT23 FZGL

M A X6 0 0 8AE UR- T -40°C to +85°C 3 SOT23 FZGN

MAX6008AESA -40°C to +85°C 8 SO —

M AX6008BE U R- T -40°C to +85°C 3 SOT23 FZGO

MAX6008BESA -40°C to +85°C 8 SO —

M A X6 0 0 9AE UR- T -40°C to +85°C 3 SOT23 FZGQ

M AX6009BE U R- T -40°C to +85°C 3 SOT23 FZGR

2.5V

I

=

OUT

R2

TEMP.

RANGE

4

MAX4162EUK

3

-10V

PIN­PACKAGE

5

1

2

R2

TOP

MARK

R1

+1.0V TO +7V

200k

I

OUT

4

3

+10V

5

1

MAX4162EUK

2

R2

MAX6006–MAX6009

1µA SOT23 Precision Shunt
Voltage Reference

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600

© 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

Package Information

SOTPO3L.EPS