National LM4132AMF-2.0, LM4132AMF-2.5, LM4132AMF-4.1, LM4132BMF-2.0, LM4132BMF-2.5 Schematic [ru]

LM4132
SOT-23 Precision Low Dropout Voltage Reference

LM4132 SOT-23 Precision Low Dropout Voltage Reference

September 2005

General Description

The LM4132 family of precision voltage references performs
comparable to the best laser-trimmed bipolar references, but
in cost effective CMOS technology. The key to this break
through is the use of EEPROM registers for correction of
curvature, tempco, and accuracy on a CMOS bandgap ar­chitecture that allows package level programming to over­come assembly shift. The shifts in voltage accuracy and
tempco during assembly of die into plastic packages limit the
accuracy of references trimmed with laser techniques.

Unlike other LDO references, the LM4132 is capable of
delivering up to 20mA and does not require an output ca­pacitor or buffer amplifier. These advantages and the SOT23
packaging are important for space-critical applications.

Series references provide lower power consumption than
shunt references, since they do not have to idle the maxi­mum possible load current under no load conditions. This
advantage, the low quiescent current (60µA), and the low
dropout voltage (400mV) make the LM4132 ideal for battery­powered solutions.

The LM4132 is available in five grades (A, B, C, D and E) for
greater flexibility. The best grade devices (A) have an initial
accuracy of 0.05% with guaranteed temperature coefficient
of 10ppm/˚C or less, while the lowest grade parts (E) have
an initial accuracy of 0.5% and a tempco of 30ppm/˚C.

Features

n Output initial voltage accuracy 0.05%
n Low temperature coefficient 10ppm/˚C
n Low Supply Current, 60µA
n Enable pin allowing a 3µA shutdown mode
n 20mA output current
n Voltage options 2.048V, 2.5V, 4.096V
n Custom voltage options available (1.8V to 4.096V)
n V

range of V

IN

n Stable with low ESR ceramic capacitors
n SOT23-5 Package

+ 400mV to 5.5V@10mA

REF

Applications

n Instrumentation & Process Control
n Test Equipment
n Data Acquisition Systems
n Base Stations
n Servo Systems
n Portable, Battery Powered Equipment
n Automotive & Industrial
n Precision Regulators
n Battery Chargers
n Communications
n Medical Equipment

Typical Application Circuit

*Note: The capacitor CINis required and the capacitor C

OUT

is optional.

20151301

© 2005 National Semiconductor Corporation DS201513 www.national.com

Connection Diagram

LM4132

Top View

SOT23-5 Package

NS Package Number MA05B

20151302

Ordering Information

Input Output Voltage Accuracy at

25˚C And Temperature Coefficient

0.05%, 10 ppm/˚C max (A grade) LM4132AMF-2.0 LM4132AMFX-2.0 R4BA

0.1%, 20 ppm/˚C max (B grade) LM4132BMF-2.0 LM4132BMFX-2.0 R4BB

0.2%, 20 ppm/˚C max (C grade) LM4132CMF-2.0 LM4132CMFX-2.0 R4BC

0.4%, 20 ppm/˚C max (D grade) LM4132DMF-2.0 LM4132DMFX-2.0 R4BD

0.5%, 30 ppm/˚C max (E grade) LM4132EMF-2.0 LM4132EMFX-2.0 R4BE

LM4132 Supplied as 1000

units, Tape and Reel

LM4132AMF-2.5 LM4132AMFX-2.5 R4CA

LM4132AMF-4.1 LM4132AMFX-4.1 R4FA

LM4132BMF-2.5 LM4132BMFX-2.5 R4CB

LM4132BMF-4.1 LM4132BMFX-4.1 R4FB

LM4132CMF-2.5 LM4132CMFX-2.5 R4CC

LM4132CMF-4.1 LM4132CMFX-4.1 R4FC

LM4132DMF-2.5 LM4132DMFX-2.5 R4CD

LM4132DMF-4.1 LM4132DMFX-4.1 R4FD

LM4132EMF-2.5 LM4132EMFX-2.5 R4CE

LM4132EMF-4.1 LM4132EMFX-4.1 R4FE

LM4132 Supplied as 3000 units,

Tape and Reel Part Marking

Pin Descriptions

Pin # Name Function

1 N/C No connect pin, leave floating

2 GND Ground

3 EN Enable pin

4V

5V

REF

IN

Input supply

Reference output

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LM4132

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Maximum Voltage on any input -0.3 to 6V

Lead Temperature (soldering, 10sec) 260˚C

Vapor Phase (60 sec) 215˚C

Infrared (15sec) 220˚C

ESD Susceptibility (Note 3)
Human Body Model 2kV

Output short circuit duration Indefinite

Power Dissipation (T

= 25˚C)

A

Operating Ratings

(Note 2) 350mW

Storage Temperature Range −65˚C to 150˚C

Maximum Input Supply Voltage 5.5V

Maximum Enable Input Voltage V

Maximum Load Current 20mA

Junction Temperature Range (T

Electrical Characteristics
LM4132-2.0 (V

ply over the junction temperature (T

= 2.048V) Limits in standard type are for T

OUT

) range of -40˚C to +125˚C. Minimum and Maximum limits are guaranteed through test,

J

design, or statistical correlation. Typical values represent the most likely parametric norm at T
reference purposes only. Unless otherwise specified V

= 5V and I

IN

LOAD

=0

Symbol Parameter Conditions

V

REF

Output Voltage Initial Accuracy

LM4132A-2.0 (A Grade - 0.05%) -0.05 0.05 %

LM4132B-2.0 (B Grade - 0.1%) -0.1 0.1

LM4132C-2.0 (C Grade - 0.2%) -0.2 0.2

LM4132D-2.0 (D Grade - 0.4%) -0.4 0.4

LM4132E-2.0 (E Grade - 0.5%) -0.5 0.5

TCV

REF

(Note 6)

/˚C

Temperature Coefficient

LM4132A-2.0 0˚C ≤ T

-40˚C ≤ T

≤ + 85˚C 10

J

≤ +125˚C 20

J

LM4132B-2.0

LM4132C-2.0 20

LM4132D-2.0 20

-40˚C ≤ T

≤ +125˚C

J

LM4132E-2.0 30

∆V

∆V

REF

V

I

Q

I

Q_SD

/∆V

REF

/∆I

LOAD

∆V

REF

IN-VREF

V

N

I

SC

V

IL

Supply Current 60 100 µA

Supply Current in Shutdown EN = 0V 3 7 µA

Line Regulation V

IN

Load Regulation 0mA ≤ I

+ 400mV ≤ VIN≤ 5.5V 30 ppm / V

REF

≤ 20mA 25 120 ppm/mA

LOAD

Long Term Stability (Note 7) 1000 Hrs 50 ppm

Thermal Hysteresis (Note 8) -40˚C ≤ T

Dropout Voltage (Note 9) I

LOAD

≤ +125˚C 75

J

= 10mA 175 400 mV

Output Noise Voltage 0.1 Hz to 10 Hz 190 µV

Short Circuit Current 75 mA

Enable Pin Maximum Low Input
Level

V

IH

Enable Pin Minimum High Input
Level

= 25˚C only, and limits in boldface type ap-

J

Min

(Note 4)

65 %V

) −40˚C to

J

= 25˚C, and are provided for

J

Typ

(Note5)Max

(Note 4) Unit

20

ppm/˚C

35 %V

IN

+125˚C

PP

IN

IN

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Electrical Characteristics
LM4132-2.5 (V

LM4132

over the junction temperature (T
sign, or statistical correlation. Typical values represent the most likely parametric norm at T
erence purposes only. Unless otherwise specified V

Symbol Parameter Conditions

V

REF

Output Voltage Initial Accuracy

LM4132A-2.5 (A Grade - 0.05%) -0.05 0.05 %

LM4132B-2.5 (B Grade - 0.1%) -0.1 0.1

LM4132C-2.5 (C Grade - 0.2%) -0.2 0.2

LM4132D-2.5 (D Grade - 0.4%) -0.4 0.4

LM4132E-2.5 (E Grade - 0.5%) -0.5 0.5

TCV

REF

(Note 6)

/˚C

Temperature Coefficient

LM4132A-2.5 0˚C ≤ T

LM4132B-2.5

LM4132C-2.5 20

LM4132D-2.5 20

LM4132E-2.5 30

∆V

∆V

REF

∆V

I

Q_SD

REF

I

Q

/∆I

REF

/∆V

LOAD

Supply Current 60 100 µA

Supply Current in Shutdown EN = 0V 3 7 µA

Line Regulation V

IN

Load Regulation 0mA ≤ I

Long Term Stability (Note 7) 1000 Hrs 50 ppm

Thermal Hysteresis (Note 8) -40˚C ≤ T

V

IN-VREF

V

I

SC

V

N

IL

Dropout Voltage (Note 9) I

Output Noise Voltage 0.1 Hz to 10 Hz 240 µV

Short Circuit Current 75 mA

Enable Pin Maximum Low Input
Level

V

IH

Enable Pin Minimum High Input
Level

= 2.5V) Limits in standard type are for T

OUT

) range of -40˚C to +125˚C. Minimum and Maximum limits are guaranteed through test, de-

J

= 5V and I

IN

-40˚C ≤ T

-40˚C ≤ T

REF

LOAD

J

=0

LOAD

≤ + 85˚C 10

J

≤ +125˚C 20

J

≤ +125˚C

J

+ 400mV ≤ VIN≤ 5.5V 50 ppm / V

≤ 20mA 25 120 ppm/mA

LOAD

≤ +125˚C 75

J

= 10mA 175 400 mV

= 25˚C only, and limits in boldface type apply

= 25˚C, and are provided for ref-

J

Typ

Min

(Note 4)

(Note5)Max

(Note 4) Unit

20

ppm/˚C

PP

35 %V

65 %V

IN

IN

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Electrical Characteristics
LM4132-4.1 (V

ply over the junction temperature (T

= 4.096V) Limits in standard type are for T

OUT

) range of -40˚C to +125˚C. Minimum and Maximum limits are guaranteed through test,

J

design, or statistical correlation. Typical values represent the most likely parametric norm at T
reference purposes only. Unless otherwise specified V

= 5V and I

IN

LOAD

=0

Symbol Parameter Conditions

V

REF

Output Voltage Initial Accuracy

LM4132A-4.1 (A Grade - 0.05%) -0.05 0.05 %

LM4132B-4.1 (B Grade - 0.1%) -0.1 0.1

LM4132C-4.1 (C Grade - 0.2%) -0.2 0.2

LM4132D-4.1 (D Grade - 0.4%) -0.4 0.4

LM4132E-4.1 (E Grade - 0.5%) -0.5 0.5

TCV

REF

(Note 6)

/˚C

Temperature Coefficient

LM4132A-4.1 0˚C ≤ T

-40˚C ≤ T

≤ + 85˚C 10

J

≤ +125˚C 20

J

LM4132B-4.1

LM4132C-4.1 20

LM4132D-4.1 20

-40˚C ≤ T

≤ +125˚C

J

LM4132E-4.1 30

∆V

∆V

REF

V

I

Q

I

Q_SD

/∆V

REF

/∆I

LOAD

∆V

REF

IN-VREF

V

N

I

SC

V

IL

Supply Current 60 100 µA

Supply Current in Shutdown EN = 0V 3 7 µA

Line Regulation V

IN

Load Regulation 0mA ≤ I

+ 400mV ≤ VIN≤ 5.5V 100 ppm / V

REF

≤ 20mA 25 120 ppm/mA

LOAD

Long Term Stability (Note 7) 1000 Hrs 50 ppm

Thermal Hysteresis (Note 8) -40˚C ≤ T

Dropout Voltage (Note 9) I

LOAD

≤ +125˚C 75

J

= 10mA 175 400 mV

Output Noise Voltage 0.1 Hz to 10 Hz 350 µV

Short Circuit Current 75 mA

Enable Pin Maximum Low Input
Level

V

IH

Enable Pin Minimum High Input
Level

= 25˚C only, and limits in boldface type ap-

J

Min

(Note 4)

65 %V

= 25˚C, and are provided for

J

Typ

(Note5)Max

(Note 4) Unit

20

ppm/˚C

35 %V

LM4132

PP

IN

IN

Note 1: Absolute Maximum Ratings indicate limits beyond which damage may occur to the device. Operating Ratings indicate conditions for which the device is
intended to be functional, but do not guarantee specific performance limits. For guaranteed specifications, see Electrical Characteristics.

Note 2: Without PCB copper enhancements. The maximum power dissipation must be de-rated at elevated temperatures and is limited by T
junction temperature), θ
=(T

Note 3: The human body model is a 100 pF capacitor discharged through a 1.5 kΩ resistor into each pin.

Note 4: Limits are 100% production tested at 25˚C. Limits over the operating temperature range are guaranteed through correlation using Statistical Quality Control.

Note 5: Typical numbers are at 25˚C and represent the most likely parametric norm.

Note 6: Temperature coefficient is measured by the "Box" method; i.e., the maximum ∆V

Note 7: Long term stability is V

Note 8: Thermal hysteresis is defined as the change in +25˚C output voltage before and after cycling the device from (-40˚C to 125˚C).

Note 9: Dropout voltage is defined as the minimum input to output differential at which the output voltage drops by 0.5% below the value measured with a 5V input.

JMAX-TA

)/θ

(junction to ambient thermal resistance) and TA(ambient temperature). The maximum power dissipation at any temperature is: P

J-A

up to the value listed in the Absolute Maximum Ratings. θ

J-A

@

25˚C measured during 1000 hrs.

REF

for SOT23-5 package is 220˚C/W, T

J-A

is divided by the maximum ∆T.

REF

JMAX

= 125˚C.

JMAX

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(maximum

DissMAX