Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - voltage reference Shunt Adjustable SC 70 3

19-1787; Rev 8; 3/13

LM4040

Improved Precision Micropower Shunt Voltage

Reference with Multiple Reverse Breakdown Voltages

For pricing, delivery, and ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

General Description

The LM4040 is a precision two-terminal shunt mode,

bandgap voltage reference available in fixed reverse

breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V,

4.096V, and 5.000V. Ideal for space-critical applica-

tions, the LM4040 is offered in the subminiature 3-pin

SC70 surface-mount package (1.8mm



1.8mm), 50%

smaller than comparable devices in SOT23 surface-

mount packages (SOT23 versions are also available).

Laser-trimmed resistors ensure precise initial accuracy.

With a 100ppm/°C temperature coefficient, the device

is offered in four grades of initial accuracy ranging from

0.1% to 1%. The LM4040 has a 60µA to 15mA shunt

current capability with low dynamic impedance, ensur-

ing stable reverse breakdown voltage accuracy over a

wide range of operating temperatures and currents.

The LM4040 does not require an external stabilizing

capacitor while ensuring stability with any capacitive

load.

The LM4040 is guaranteed over the temperature range

of -40°C to +125°C.

For a 1.225V output version, refer to the LM4041 data

sheet.

________________________Applications

Portable, Battery-Powered Equipment

Notebook Computers

Cell Phones

Industrial Process Controls

Features

o Ultra-Small 3-Pin SC70 Package

o 0.1% (max) Initial Accuracy

o 100ppm/°C (max) Temperature Coefficient

Guaranteed over -40°C to +125°C Temperature

Range

o Wide Operating Current Range: 60µA to 15mA

o Low 28µV

RMS

Output Noise (10Hz to 10kHz)

o 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V

Fixed Reverse Breakdown Voltages

o No Output Capacitors Required

o Tolerates Capacitive Loads

3 N.C.*

LM4040

SC70-3/SOT23-3

TOP VIEW

*PIN 3 MUST BE LEFT UNCONNECTED

OR CONNECTED TO PIN 2.

Pin Configuration

Ordering Information appears at end of data sheet.

Summary of content (15 pages)

PAGE 1
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages General Description The LM4040 is a precision two-terminal shunt mode, bandgap voltage reference available in fixed reverse breakdown voltages of 2.048V, 2.500V, 3.000V, 3.3V, 4.096V, and 5.000V. Ideal for space-critical applications, the LM4040 is offered in the subminiature 3-pin SC70 surface-mount package (1.8mm 1.
PAGE 2
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ABSOLUTE MAXIMUM RATINGS Reverse Current (cathode to anode) ..................................20mA Forward Current (anode to cathode) ..................................10mA Continuous Power Dissipation (TA = +70°C) 3-Pin SC70 (derate 2.17mW/°C above +70°C) ............174mW 3-Pin SOT23 (derate 4.01mW/°C above +70°C)..........320mW Operating Temperature Range LM4040_I_ _ _...................................
PAGE 3
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS—2.500V (IR = 100µA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Tolerance (Note 2) Minimum Operating Current SYMBOL VR VR IRMIN CONDITIONS MIN TYP MAX LM4040A (0.1%) 2.4975 2.5000 2.5025 LM4040B (0.2%) 2.4950 2.5000 2.5050 LM4040C (0.5%) 2.4875 2.5000 2.
PAGE 4
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS—3.000V (IR = 100µA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Tolerance (Note 2) Minimum Operating Current SYMBOL VR VR IRMIN CONDITIONS TA = +25°C MIN TYP MAX LM4040A (0.1%) 2.997 3.000 3.003 LM4040B (0.2%) 2.994 3.000 3.006 LM4040C (0.5%) 2.985 3.
PAGE 5
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS—3.300V (IR = 100µA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS LM4040A (0.1%) Reverse Breakdown Voltage Reverse Breakdown Voltage Tolerance (Note 2) Minimum Operating Current VR VR IRMIN ∆VR/∆T Reverse Dynamic Impedance (Note 3) 3.2934 3.3000 3.3066 3.2835 3.3000 3.3165 LM4040D (1.0%) 3.
PAGE 6
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS—4.096V (IR = 100µA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Tolerance (Note 2) Minimum Operating Current SYMBOL VR VR IRMIN CONDITIONS TA = +25°C MIN TYP MAX LM4040A (0.1%) 4.092 4.096 4.100 LM4040B (0.2%) 4.088 4.096 4.104 LM4040C (0.5%) 4.076 4.
PAGE 7
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages ELECTRICAL CHARACTERISTICS—5.000V (IR = 100µA, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1) PARAMETER Reverse Breakdown Voltage Reverse Breakdown Voltage Tolerance (Note 2) Minimum Operating Current Average Reverse Voltage Temperature Coefficient (Notes 2 and 3) SYMBOL VR VR IRMIN ∆VR/∆T CONDITIONS TA = +25°C MIN TYP MAX LM4040A (0.1%) 4.995 5.
PAGE 8
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Typical Operating Characteristics (IR = 100µA, SC70-3 package, TA = +25°C, unless otherwise noted.) REVERSE CHARACTERISTICS AND MINIMUM OPERATING CURRENT LM4040_I_3-3.0 3 2 LM4040_I_3-2.5 LM4040_I_3-2.1 0 0 REFERENCE VOLTAGE CHANGE (mV) -1 -2 -3 -4 -5 0 50 100 -5 -10 -15 -20 -50 -25 0 REVERSE CURRENT (µA) 25 50 75 100 125 -25 -50 0 TEMPERATURE (°C) LM4040-2.5V REVERSE VOLTAGE vs.
PAGE 9
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Typical Operating Characteristics (continued) (IR = 100µA, SC70 package, TA = +25°C, unless otherwise noted.) LM4040-2.5V LOAD-TRANSIENT RESPONSE LM4040-5.0V LOAD-TRANSIENT RESPONSE LM4040-2.
PAGE 10
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Typical Operating Characteristics (continued) (IR = 100µA, SC70 package, TA = +25°C, unless otherwise noted.) LM4040-2.5V STARTUP CHARACTERISTICS LM4040-5.0V STARTUP CHARACTERISTICS LM4040-2.5V OUTPUT IMPEDANCE vs. FREQUENCY LM4040-13 5V 1000 LM4040-14 LM4040-12 C1 = 1µF 0V 2V 4V 1V 0V 100 IMPEDANCE (Ω) 0V VOUT 2V 0V 4 8 IR = 1mA RS = 16kΩ SEE FIGURE 2 12 16 20 24 28 32 36 0 0.
PAGE 11
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Pin Description PIN NAME FUNCTION 1 + Positive Terminal of the Shunt Reference 2 − Negative Terminal of the Shunt Reference 3 N.C. No connection. Leave this pin unconnected or connected to pin 2. Detailed Description The LM4040 shunt references use the bandgap principle to produce a stable, accurate voltage.
PAGE 12
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Ordering Information LM4040AIM3-2.1+T 2.048 INITIAL ACCURACY (%) 0.1 LM4040AIX3-2.1+T 2.048 LM4040BIM3-2.1+T 2.048 LM4040BIX3-2.1+T 2.048 PART OUTPUT VOLTAGE (V) TEMPCO (ppm/°C) TEMP RANGE PIN-PACKAGE TOP MARK 100 -40°C to +85°C 3 SOT23 FZEF 0.1 100 -40°C to +85°C 3 SC70 0.2 100 -40°C to +85°C 3 SOT23 FZEG 0.2 100 -40°C to +85°C 3 SC70 ABK FZEH ABJ LM4040CIM3-2.1+T 2.
PAGE 13
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Ordering Information (continued) OUTPUT VOLTAGE (V) INITIAL ACCURACY (%) TEMPCO (ppm/°C) LM4040AIM3-3.0+T 3.000 0.1 100 LM4040AIX3-3.0+T 3.000 0.1 100 LM4040BIM3-3.0+T 3.000 0.2 LM4040BIX3-3.0+T 3.000 LM4040CIM3-3.0+T 3.000 LM4040CIX3-3.0+T LM4040DIM3-3.0+T PIN-PACKAGE TOP MARK -40°C to +85°C 3 SOT23 FZEN -40°C to +85°C 3 SC70 ABR 100 -40°C to +85°C 3 SOT23 FZEO 0.
PAGE 14
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Ordering Information (continued) OUTPUT VOLTAGE (V) INITIAL ACCURACY (%) TEMPCO (ppm/°C) TEMP RANGE LM4040CEX3-4.1+T 4.096 0.5 100 -40°C to +125°C 3 SC70 LM4040DEM3-4.1+T 4.096 1.0 150 -40°C to +125°C 3 SOT23 FZNV LM4040DEM3-4.1/V+T 4.096 1.0 150 -40°C to +125°C 3 SOT23 FZWA LM4040DEX3-4.1+T 4.096 1.0 150 -40°C to +125°C 3 SC70 ALU LM4040AIM3-5.0+T 5.000 0.
PAGE 15
LM4040 Improved Precision Micropower Shunt Voltage Reference with Multiple Reverse Breakdown Voltages Revision History REVISION NUMBER REVISION DATE 0 8/00 5 7/05 Updated Electrical Characteristics. 6 4/11 Updated Selector Guide, Absolute Maximum Ratings, and Ordering Information. 1, 2, 12, 13, 14 7 11/11 Add /V+ automotive-qualified identification to the Selector Guide and Ordering Information. 1, 12 8 3/13 Updated Ordering Information and removed Selector Guide.