Datasheet LM2931D, LM2931AV50, LM2931AV33, LM2931BZ50, LM2931BZ33 Datasheet (SGS Thomson Microelectronics)

LM2931
SERIES

VERY LOW DROP VOLTAGE

REGULATOR WITH INHIBIT FUNCTION



December 1999

BLOCKDIAGRAM

■ VERYLOWDROPOUTVOLTAGE (0.15V

TYP.AT 10mA LOAD)

■ LOWQUIESCENTCURRENT (TYP2.5mA,

AT 100mA LOAD)

■

OUTPUT CURRENT UP TO 100mA

■ ADJUSTABLE(FROMV

OUT

=2.5VONLY
SO-8)ANDFIXED(3.3V& 5V) OUTPUT
VOLTAGEVERSION

■

INTERNALCURRENTAND THERMALLIMIT

■ LOADDUMP PROTECTIONUP TO60V

■ REVERSETRANSIENTPROTECTIONUPTO

-50V

■ TEMPERATURERANGE:-40TO 125

o

C

■ PACKAGEAVAILABLE:TO-92, DPAK,

TO-220,SO-8 (WITH INHIBITCONTROL)

DESCRIPTION

The LM2931 series are very low drop
regulators. The very low drop voltage and the
low quiescent current make them particular
suitable for low noise, low power applications
and in battery powered systems. In the 8 pin
configation (SO-8), fully compatible to the older
L78L00 family, a shut down Logic Control
function is available.
This means that when the device is used as a

local regulator is possible to put a part of the
board in stand-by decreasing the total power
consumption. Ideal for automotive application
the LM2931 is proteceted from reverse battery
installations or 2 battery jumps. During the
transient, suchs as a a load dump (60V) when
the input voltage can exceed the specified
maximum operating input voltage (26V), the
regulator will automatically shut down to protect
both internal circuit and the load.

TO-252 (DPAK) TO-220

SO-8

TO-92

1/16

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

IN

DC PositiveInputVoltage 40 V

V

IN

DC Reverse InputVoltage -15 V

V

IN

TransientInput Voltage(τ<100ms)

60 V

V

IN

TransientReverse InputVoltage (τ < 100ms)

-50 V

V

INH

InhibitInputVoltage 40 V

I

OUT

OutputCurrent Internally Limited mA

T

stg

Storage TemperatureRange -65 to 150

o

C

T

op

OperatingJunction Temperature Range -40 to 125

o

C

Absolute Maximum Ratings are those value beyond which damage to the device may occur. Functional operation under these condition is
not implied.

CONNECTION DIAGRAM AND ORDERINGNUMBERS

(top view)

TO-220 DPAK (*) TO-92 (*) SO-8 (*) Output Voltage

LM2931AV33
LM2931BV33
LM2931AV50
LM2931BV50

LM2931ADT33
LM2931BDT33
LM2931ADT50
LM2931BDT50

LM2931AZ33
LM2931BZ33
LM2931AZ50
LM2931BZ50

LM2931AD33
LM2931BD33
LM2931AD50
LM2931BD50

3.3V

3.3V
5V
5V

LM2931D 2.5V to 26V

(*) Available in Tape & Reel with the suffix”R” for fixedversion and ”-R” for adjustable version.

TO-220 DPAK

SO-8 TO-92

pin 1 = OUT
pin 2 = GND
pin 3 = IN

BOTTOM VIEW

(*)= N.C. for FIXED and ADJ for ADJUSTABLE

LM2931 SERIES

2/16

APPLICATION CIRCUIT FOR FIXED OUTPUT

(Figure1)

APPLICATION CIRCUIT FOR ADJUSTABLE OUTPUT(Figure 2)

R1suggestedValue = 27KΩ
V

O=VREF

x

R

1

+ R

2

R

1

LM2931 SERIES

3/16

ELECTRICAL CHARACTERISTICS FOR LM2931A 3.3V

(referto the test circuits,

T

j

=25oC, VIN=14V, CIN= 0.1 µF, CO= 100 µF, IO=10mA, V

INH

= 0V unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

I

Maximum OperatingInput
Voltage

IO=10mA Tj=-40to 125oC2637 V

V

O

OutputVoltage 3.175 3.3 3.425 V

V

O

OutputVoltage IO= 100mA VIN=6 to 26 V

T

j

= -40to 125oC

3.135 3. 3 3.465 V

∆V

O

LineRegulation VIN=9 to 16 V 2 10 mV

∆V

O

LineRegulation VIN=6 to 26 V 4 33 mV

∆V

O

LoadRegulation IO= 5 to100 mA 10 33 mV

V

d

Dropout Voltage (Note1, 2) IO= 10 mA 90 250 V

V

d

Dropout Voltage (Note1, 2) IO= 100mA 250 600 V

I

d

QuiescentCurrent ON Mode: I

OUT

= 100mA 2.5 30 mA

I

d

QuiescentCurrent

OFFMode: V

INH

=2.5V R

LOAD

=330Ω

0.3 1 mA

I

SC

ShortCircuitCurrent 100 300 mA

SVR Supply VoltageRejection

I

O

= 100mA VIN=14±2V

f = 120Hz T

j

= -40to 125oC

55 78 dB

V

IL

Control InputVoltage Tj= -40to 125oC21.2V

V

IH

Control InputVoltage Tj= -40to 125oC3.252V

I

INH

InhibitInput Current V

INH

=2.5V 22 50

µA

V

IN

TransientInput Voltage

R

LOAD

=330Ωτ<100ms

60 70 V

V

IN

Reverse PolarityInput
Voltage

V

O

± 0.3V R

LOAD

=330Ω

-15 -50 V

V

IN

Reverse PolarityInput
VoltageTransient

R

LOAD

=330Ωτ<100ms

-50 V

eN OutputNoise Voltage B = 10Hzto 100KHz 330

µ

V

RMS

Note 1: Reference Voltage is measured from V

OUT

to AJD pin.

Note 2: V

d

measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.

LM2931 SERIES

4/16

ELECTRICAL CHARACTERISTICS FOR LM2931B 3.3V

(referto the test circuits,

T

j

=25oC, VIN=14V, CIN= 0.1 µF, CO= 100 µF, IO=10mA, V

INH

= 0V unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

I

Maximum OperatingInput
Voltage

IO=10mA Tj=-40to 125oC2637 V

V

O

OutputVoltage 3.135 3.3 3.465 V

V

O

OutputVoltage IO= 100mA VIN=6 to 26 V

T

j

= -40to 125oC

2.97 3.3 3.63 V

∆V

O

LineRegulation VIN=9 to 16 V 2 10 mV

∆V

O

LineRegulation VIN=6 to 26 V 4 33 mV

∆V

O

LoadRegulation IO= 5 to100 mA 10 33 mV

V

d

Dropout Voltage (Note1, 2) IO= 10 mA 90 200 V

V

d

Dropout Voltage (Note1, 2) IO= 100mA 250 600 V

I

d

QuiescentCurrent ON Mode: I

OUT

= 100mA 2.5 30 mA

I

d

QuiescentCurrent

OFFMode: V

INH

=2.5V R

LOAD

=330Ω

0.3 1 mA

I

SC

ShortCircuitCurrent 100 300 mA

SVR Supply VoltageRejection

I

O

= 100mA VIN=14±2V

f = 120Hz T

j

= -40to 125oC

55 78 dB

V

IL

Control InputVoltage Tj= -40to 125oC21.2V

V

IH

Control InputVoltage Tj= -40to 125oC3.252V

I

INH

InhibitInput Current V

INH

=2.5V 22 50

µA

V

IN

TransientInput Voltage

R

LOAD

=330Ωτ<100ms

60 70 V

V

IN

Reverse PolarityInput
Voltage

V

O

± 0.3V R

LOAD

=330Ω

-15 -50 V

V

IN

Reverse PolarityInput
VoltageTransient

R

LOAD

=330Ωτ<100ms

-50 V

eN OutputNoise Voltage B = 10Hzto 100KHz 330

µ

V

RMS

Note 1: Reference Voltage is measured from V

OUT

to AJD pin.

Note 2: V

d

measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.

LM2931 SERIES

5/16

ELECTRICAL CHARACTERISTICS FOR LM2931A 5V

(referto the test circuits,

T

j

=25oC, VIN=14V, CIN= 0.1 µF, CO= 100 µF, IO=10mA, V

INH

= 0V unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

I

Maximum OperatingInput
Voltage

IO=10mA Tj=-40to 125oC2637 V

V

O

OutputVoltage 4.81 5 5.19 V

V

O

OutputVoltage IO= 100mA VIN=6 to 26 V

T

j

= -40to 125oC

4.75 5 5.25 V

∆V

O

LineRegulation VIN=9 to 16 V 2 10 mV

∆V

O

LineRegulation VIN=6 to 26 V 4 30 mV

∆V

O

LoadRegulation IO= 5 to100 mA 15 50 mV

V

d

Dropout Voltage (Note1, 2) IO= 10 mA 90 200 V

V

d

Dropout Voltage (Note1, 2) IO= 100mA 250 600 V

I

d

QuiescentCurrent ON Mode: I

OUT

= 100mA 2.5 30 mA

I

d

QuiescentCurrent

OFFMode: V

INH

=2.5V R

LOAD

=500Ω

0.3 1 mA

I

SC

ShortCircuitCurrent 100 300 mA

SVR Supply VoltageRejection

I

O

= 100mA VIN=14±2V

f = 120Hz T

j

= -40to 125oC

55 75 dB

V

IL

Control InputVoltage Tj= -40to 125oC21.2V

V

IH

Control InputVoltage Tj= -40to 125oC3.252V

I

INH

InhibitInput Current V

INH

=2.5V 22 50

µA

V

IN

TransientInput Voltage

R

LOAD

=500Ωτ<100ms

60 70 V

V

IN

Reverse PolarityInput
Voltage

V

O

± 0.3V R

LOAD

=500Ω

-15 -50 V

V

IN

Reverse PolarityInput
VoltageTransient

R

LOAD

=500Ωτ<100ms

-50 V

eN OutputNoise Voltage B = 10Hzto 100KHz 500

µ

V

RMS

Note 1: Reference Voltage is measured from V

OUT

to AJD pin.

Note 2: V

d

measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.

LM2931 SERIES

6/16

ELECTRICAL CHARACTERISTICS FOR LM2931B 5V

(referto the test circuits,

T

j

=25oC, VIN=14V, CIN= 0.1 µF, CO= 100 µF, IO=10mA, V

INH

= 0V unless otherwise specified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

I

Maximum OperatingInput
Voltage

IO=10mA Tj=-40to 125oC2637 V

V

O

OutputVoltage 4.75 5 5.25 V

V

O

OutputVoltage IO= 100mA VIN=6 to 26 V

T

j

= -40to 125oC

4.555.5V

∆V

O

LineRegulation VIN=9 to 16 V 2 10 mV

∆V

O

LineRegulation VIN=6 to 26 V 4 30 mV

∆V

O

LoadRegulation IO= 5 to100 mA 15 50 mV

V

d

Dropout Voltage (Note1, 2) IO= 10 mA 90 200 V

V

d

Dropout Voltage (Note1, 2) IO= 100mA 250 600 V

I

d

QuiescentCurrent ON Mode: I

OUT

= 100mA 2.5 30 mA

I

d

QuiescentCurrent

OFFMode: V

INH

=2.5V R

LOAD

=330Ω

0.3 1 mA

I

SC

ShortCircuitCurrent 100 300 mA

SVR Supply VoltageRejection

I

O

= 100mA VIN=14±2V

f = 120Hz T

j

= -40to 125oC

55 75 dB

V

IL

Control InputVoltage Tj= -40to 125oC21.2V

V

IH

Control InputVoltage Tj= -40to 125oC3.252V

I

INH

InhibitInput Current V

INH

=2.5V 22 50

µA

V

IN

TransientInput Voltage

R

LOAD

=500Ωτ<100ms

60 70 V

V

IN

Reverse PolarityInput
Voltage

V

O

± 0.3V R

LOAD

=500Ω

-15 -50 V

V

IN

Reverse PolarityInput
VoltageTransient

R

LOAD

=500Ωτ<100ms

-50 V

eN OutputNoise Voltage B = 10Hzto 100KHz 500

µ

V

RMS

Note 1: Reference Voltage is measured from V

OUT

to AJD pin.

Note 2: V

d

measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.

LM2931 SERIES

7/16

ELECTRICAL CHARACTERISTICS FOR LM2931ADJ

(referto the test circuitsfigure 2 with R

1

=27KΩ

and R

2

=40.5KΩ,Tj=25oC, VIN=14V, CIN= 0.1 µF, CO= 100 µF, IO= 10mA,V

INH

= 0V unless

otherwisespecified)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

I

Maximum OperatingInput
Voltage

IO=10mA Tj=-40to 125oC2637 V

V

REF

Reference Voltage(Note 1) 1.14 1.2 1.26 V

V

REF

Reference Voltage(Note 1) IO= 100mA Tj=-40to 125oC 1.08 1.2 1.32 V

∆V

O

LineRegulation VIN=3.6 to 26 V 0.6 4.5 mV

∆V

O

LoadRegulation IO= 5 to100 mA 9 30 mV

V

d

Dropout Voltage (Note1, 2) IO= 10 mA 90 200 V

V

d

Dropout Voltage (Note1, 2) IO= 100mA 250 600 V

I

d

QuiescentCurrent ON Mode: I

OUT

= 100mA 2.5 30 mA

I

d

QuiescentCurrent

OFFMode: V

INH

=2.5V R

LOAD

=300Ω 0.3 1 mA

I

SC

ShortCircuitCurrent 100 300 mA

SVR Supply VoltageRejection

I

O

= 100mA VIN=14±2V

f = 120Hz T

j

= -40to 125oC

55 80 dB

V

IL

Control InputVoltage Tj= -40to 125oC21.2V

V

IH

Control InputVoltage Tj= -40to 125oC3.252V

I

INH

InhibitInput Current V

INH

=2.5V 22 50

µ

A

V

IN

TransientInput Voltage

R

LOAD

=300Ωτ<100ms

60 70 V

V

IN

Reverse PolarityInput
Voltage

V

O

±

0.3V R

LOAD

=300

Ω

-15 -50 V

V

IN

Reverse PolarityInput
VoltageTransient

R

LOAD

=300

Ωτ

<100ms

-50 V

eN OutputNoise Voltage B = 10Hzto 100KHz 330

µ

V

RMS

Note 1: Reference Voltage is measured from V

OUT

to AJD pin.

Note 2: V

d

measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.

LM2931 SERIES

8/16

TYPICALCHARACTERISTICS

(unlessotherwisespecifiedC

IN

=0.1µF,CO=100µF)

OutputVoltage vs Temperature OutputVoltage vs Temperature

RefereceVoltage vs Temperature

LoadRegulation vs Temperature

Line Regulationvs Temperature

Dropout Voltagevs Temperature

LM2931 SERIES

9/16

DropoutVoltagevs Temperature

OutputVoltage vs Input Voltage

QuiescentCurrent vs Temperature

Dropout Voltagevs OutputCurrent

Short Circuit Currentvs Drop Voltage

QuiescentCurrent vs InputVoltage

TYPICALCHARACTERISTICS

(Continued)

LM2931 SERIES

10/16

QuiescentCurrent vs OutputCurrent

SupplyVoltage Rejectionvs Frequency

Line Transient

SupplyVoltage Rejectionvs Temperature

SupplyVoltage Rejectionvs Output Current

LoadTransient

TYPICALCHARACTERISTICS

(Continued)

LM2931 SERIES

11/16

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 4.40 4.60 0.173 0.181
C 1.23 1.32 0.048 0.051
D 2.40 2.72 0.094 0.107

D1 1.27 0.050

E 0.49 0.70 0.019 0.027

F 0.61 0.88 0.024 0.034
F1 1.14 1.70 0.044 0.067
F2 1.14 1.70 0.044 0.067

G 4.95 5.15 0.194 0.203
G1 2.4 2.7 0.094 0.106
H2 10.0 10.40 0.393 0.409

L2 16.4 0.645
L4 13.0 14.0 0.511 0.551
L5 2.65 2.95 0.104 0.116
L6 15.25 15.75 0.600 0.620
L7 6.2 6.6 0.244 0.260
L9 3.5 3.93 0.137 0.154

DIA. 3.75 3.85 0.147 0.151

L6

A

C

D

E

D1

F

G

L7

L2

Dia.

F1

L5

L4

H2

L9

F2

G1

TO-220 MECHANICAL DATA

P011C

LM2931 SERIES

12/16

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 2.2 2.4 0.086 0.094
A1 0.9 1.1 0.035 0.043
A2 0.03 0.23 0.001 0.009

B 0.64 0.9 0.025 0.035
B2 5.2 5.4 0.204 0.212

C 0.45 0.6 0.017 0.023
C2 0.48 0.6 0.019 0.023

D 6 6.2 0.236 0.244

E 6.4 6.6 0.252 0.260

G 4.4 4.6 0.173 0.181

H 9.35 10.1 0.368 0.397

L2 0.8 0.031
L4 0.6 1 0.023 0.039

==

D

L2

L4

13

==

B

E

==

B2

G

2

A

C2

C

H

A1

DETAIL”A”

A2

DETAIL”A”

TO-252 (DPAK) MECHANICAL DATA

0068772-B

LM2931 SERIES

13/16

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 1.75 0.068

a1 0.1 0.25 0.003 0.009
a2 1.65 0.064
a3 0.65 0.85 0.025 0.033

b 0.35 0.48 0.013 0.018

b1 0.19 0.25 0.007 0.010

C 0.25 0.5 0.010 0.019

c1 45 (typ.)

D 4.8 5.0 0.188 0.196

E 5.8 6.2 0.228 0.244

e 1.27 0.050

e3 3.81 0.150

F 3.8 4.0 0.14 0.157

L 0.4 1.27 0.015 0.050

M 0.6 0.023

S 8 (max.)

0016023

SO-8 MECHANICALDATA

LM2931 SERIES

14/16

DIM.

mm inch

MIN. TYP. MAX. MIN. TYP. MAX.

A 4.58 5.33 0.180 0.210

B 4.45 5.2 0.175 0.204

C 3.2 4.2 0.126 0.165

D 12.7 0.500

E 1.27 0.050

F 0.4 0.51 0.016 0.020

G 0.35 0.14

TO-92 MECHANICAL DATA

LM2931 SERIES

15/16

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LM2931 SERIES

16/16