STMicroelectronics LM2931BZ33 Very low drop voltage regulators with inhibit function Datasheet

LM2931
SERIES
VERY LOW DROP
VOLTAGE REGULATORS WITH INHIBIT FUNCTION
■
■
■
■
■
■
■
■
■
VERY LOW DROPOUT VOLTAGE (0.15V
TYP. AT 10mA LOAD)
LOW QUIESCENT CURRENT (TYP. 2.5mA,
AT 100mA LOAD)
OUTPUT CURRENT UP TO 100mA
ADJUSTABLE (FROM VOUT = 2.5V ONLY
SO-8) AND FIXED (3.3V & 5V) OUTPUT
VOLTAGE VERSION
INTERNAL CURRENT AND THERMAL LIMIT
LOAD DUMP PROTECTION UP TO 60V
REVERSE TRANSIENT PROTECTION UP
TO -50V
TEMPERATURE RANGE: -40 TO 125°C
PACKAGE AVAILABLE: TO-92, DPAK,
TO-220, SO-8 (WITH INHIBIT CONTROL)
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 configuration
(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
TO-220
TO-92
DPAK
SO-8
in stand-by decreasing the total power
consumption. Ideal for automotive application the
LM2931 is protected from reverse battery
installations or 2 battery jumps. During the
transient, such 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.
SCHEMATIC DIAGRAM
March 2004
1/19
LM2931 SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Value
Unit
VI
DC Positive Input Voltage
40
V
VI
DC Reverse Input Voltage
-15
V
VI
Transient Input Voltage (τ < 100ms)
60
V
VI
Transient Reverse Input Voltage (τ < 100ms)
-50
V
40
V
VINH
Inhibit Input Voltage
Output Current
IO
Internally Limited
Tstg
Storage Temperature Range
-65 to 150
°C
Top
Operating Junction Temperature Range
-40 to 125
°C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA
Symbol
Parameter
TO-220
SO-8
DPAK
Rthj-case
Thermal Resistance Junction-case
3
20
8
Rthj-amb
Thermal Resistance Junction-ambient
50
55(*)
100
TO-92
Unit
°C/W
200
°C/W
2
(*) Considering 6 cm of copper board heat-sink
CONNECTION DIAGRAM (top view)
TO-220
(*) = N.C. for FIXED and ADJ for ADJUSTABLE
SO-8
PIN 1 = VOUT
PIN 2 = GND
PIN 3 = VIN
BOTTOM VIEW
TO-92
DPAK
ORDERING CODES
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
LM2931D
3.3 V
3.3 V
5.0 V
5.0 V
2.5 to 26 V
(*) Available in Tape & Reel with the suffix "R" for fixed version and "-R" for adjustable version.
2/19
LM2931 SERIES
APPLICATION CIRCUIT FOR FIXED OUTPUT
APPLICATION CIRCUIT FOR ADJUSTABLE OUTPUT
R1 suggested Value = 27KΩ
VO = VREF (R1 + R2)/R1.
3/19
LM2931 SERIES
ELECTRICAL CHARACTERISTICS OF LM2931A 3.3V (refer to the test circuits, TJ = 25°C,
CI = 0.1 µF, C O = 100 µF, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified).
Symbol
VI
Parameter
Test Conditions
Typ.
Max.
Unit
26
37
3.135
3.3
3.425
V
3.135
3.3
3.465
V
mV
IO = 10 mA
VO
Maximum Operating Input
Voltage
Output Voltage
VO
Output Voltage
IO = 100 mA VI = 6 to 26 V
TJ = -40 to 125°C
∆VO
Line Regulation
VI = 9 to 16 V
2
10
VI = 6 to 26 V
4
33
IO = 5 to 100 mA
10
33
mV
90
250
mV
250
600
2.5
30
0.3
1
∆VO
Load Regulation
Vd
Dropout Voltage (Note 1, 2) IO = 10 mA
IO = 100 mA
Id
Quiescent Current
ON MODE
OFF MODE
ISC
TJ = -40 to 125°C
Min.
IO = 100 mA
VINH = 2.5 V
RLOAD = 330 Ω
Short Circuit Current
V
mA
mA
100
300
mA
55
78
dB
SVR
Supply Voltage Rejection
IO = 100 mA,
f = 120 Hz,
VIL
Control Input Voltage Low
TJ = -40 to 125°C
VIH
Control Input Voltage High
TJ = -40 to 125°C
IINH
Inhibit Input Current
VINH = 2.5 V
VI
Transient Input Voltage
RLOAD = 330 Ω
τ < 100ms
60
70
V
VI
Reverse Polarity Input
Voltage
Reverse Polarity Input
Voltage Transient
Output Noise Voltage
VO = ± 0.3 V
RLOAD = 330 Ω
-15
-50
V
RLOAD = 330 Ω
τ < 100ms
-50
VI
eN
VI = 14 ± 2 V
TJ = -40 to 125°C
2
3.25
Note 1: Reference Voltage is measured from VOUT to ADJ pin.
Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.
4/19
V
50
µA
2
22
B =10 Hz to 100 KHz
1.2
V
V
330
µVRMS
LM2931 SERIES
ELECTRICAL CHARACTERISTICS OF LM2931B 3.3V (refer to the test circuits, TJ = 25°C,
CI = 0.1 µF, C O = 100 µF, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified).
Symbol
VI
Parameter
Test Conditions
Typ.
Max.
Unit
26
37
3.135
3.3
3.465
V
2.97
3.3
3.63
V
mV
IO = 10 mA
VO
Maximum Operating Input
Voltage
Output Voltage
VO
Output Voltage
IO = 100 mA VI = 6 to 26 V
TJ = -40 to 125°C
∆VO
Line Regulation
VI = 9 to 16 V
2
10
VI = 6 to 26 V
4
33
IO = 5 to 100 mA
10
33
mV
90
200
mV
250
600
2.5
30
0.3
1
∆VO
Load Regulation
Vd
Dropout Voltage (Note 1, 2) IO = 10 mA
IO = 100 mA
Id
Quiescent Current
ON MODE
OFF MODE
ISC
TJ = -40 to 125°C
Min.
IO = 100 mA
VINH = 2.5 V
RLOAD = 330 Ω
Short Circuit Current
V
mA
mA
100
300
mA
55
78
dB
SVR
Supply Voltage Rejection
IO = 100 mA,
f = 120 Hz,
VIL
Control Input Voltage Low
TJ = -40 to 125°C
VIH
Control Input Voltage High
TJ = -40 to 125°C
IINH
Inhibit Input Current
VINH = 2.5 V
VI
Transient Input Voltage
RLOAD = 330 Ω
τ < 100ms
60
70
V
VI
Reverse Polarity Input
Voltage
Reverse Polarity Input
Voltage Transient
Output Noise Voltage
VO = ± 0.3 V
RLOAD = 330 Ω
-15
-50
V
RLOAD = 330 Ω
τ < 100ms
-50
VI
eN
VI = 14 ± 2 V
TJ = -40 to 125°C
2
3.25
V
50
µA
2
22
B =10 Hz to 100 KHz
1.2
V
V
330
µVRMS
Note 1: Reference Voltage is measured from VOUT to ADJ pin.
Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.
5/19
LM2931 SERIES
ELECTRICAL CHARACTERISTICS OF LM2931A 5V (refer to the test circuits, TJ = 25°C,
CI = 0.1 µF, C O = 100 µF, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified).
Symbol
VI
Parameter
Test Conditions
Typ.
Max.
Unit
26
37
4.81
5
5.19
V
4.75
5
5.25
V
mV
IO = 10 mA
VO
Maximum Operating Input
Voltage
Output Voltage
VO
Output Voltage
IO = 100 mA VI = 6 to 26 V
TJ = -40 to 125°C
∆VO
Line Regulation
VI = 9 to 16 V
2
10
VI = 6 to 26 V
4
30
IO = 5 to 100 mA
15
50
mV
90
200
mV
250
600
2.5
30
0.3
1
∆VO
Load Regulation
Vd
Dropout Voltage (Note 1, 2) IO = 10 mA
IO = 100 mA
Id
Quiescent Current
ON MODE
OFF MODE
ISC
TJ = -40 to 125°C
Min.
IO = 100 mA
VINH = 2.5 V
RLOAD = 500 Ω
Short Circuit Current
V
mA
mA
100
300
mA
55
75
dB
SVR
Supply Voltage Rejection
IO = 100 mA,
f = 120 Hz,
VIL
Control Input Voltage Low
TJ = -40 to 125°C
VIH
Control Input Voltage High
TJ = -40 to 125°C
IINH
Inhibit Input Current
VINH = 2.5 V
VI
Transient Input Voltage
RLOAD = 500 Ω
τ < 100ms
60
70
V
VI
Reverse Polarity Input
Voltage
Reverse Polarity Input
Voltage Transient
Output Noise Voltage
VO = ± 0.3 V
RLOAD = 500 Ω
-15
-50
V
RLOAD = 500 Ω
τ < 100ms
-50
VI
eN
VI = 14 ± 2 V
TJ = -40 to 125°C
2
3.25
Note 1: Reference Voltage is measured from VOUT to ADJ pin.
Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.
6/19
V
50
µA
2
22
B =10 Hz to 100 KHz
1.2
V
V
500
µVRMS
LM2931 SERIES
ELECTRICAL CHARACTERISTICS OF LM2931B 5V (refer to the test circuits, TJ = 25°C,
CI = 0.1 µF, C O = 100 µF, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise specified).
Symbol
VI
Parameter
Test Conditions
Typ.
Max.
Unit
26
37
4.75
5
5.25
V
4.5
5
5.5
V
mV
IO = 10 mA
VO
Maximum Operating Input
Voltage
Output Voltage
VO
Output Voltage
IO = 100 mA VI = 6 to 26 V
TJ = -40 to 125°C
∆VO
Line Regulation
VI = 9 to 16 V
2
10
VI = 6 to 26 V
4
30
IO = 5 to 100 mA
15
50
mV
90
200
mV
250
600
2.5
30
0.3
1
∆VO
Load Regulation
Vd
Dropout Voltage (Note 1, 2) IO = 10 mA
IO = 100 mA
Id
Quiescent Current
ON MODE
OFF MODE
ISC
TJ = -40 to 125°C
Min.
IO = 100 mA
VINH = 2.5 V
RLOAD = 500 Ω
Short Circuit Current
V
mA
mA
100
300
mA
55
75
dB
SVR
Supply Voltage Rejection
IO = 100 mA,
f = 120 Hz,
VIL
Control Input Voltage Low
TJ = -40 to 125°C
VIH
Control Input Voltage High
TJ = -40 to 125°C
IINH
Inhibit Input Current
VINH = 2.5 V
VI
Transient Input Voltage
RLOAD = 500 Ω
τ < 100ms
60
70
V
VI
Reverse Polarity Input
Voltage
Reverse Polarity Input
Voltage Transient
Output Noise Voltage
VO = ± 0.3 V
RLOAD = 500 Ω
-15
-50
V
RLOAD = 500 Ω
τ < 100ms
-50
VI
eN
VI = 14 ± 2 V
TJ = -40 to 125°C
2
3.25
V
50
µA
2
22
B =10 Hz to 100 KHz
1.2
V
V
500
µVRMS
Note 1: Reference Voltage is measured from VOUT to ADJ pin.
Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.
7/19
LM2931 SERIES
ELECTRICAL CHARACTERISTICS OF LM2931ADJ (refer to the test circuits figure 2 with R1 = 27KΩ
and R2 = 40.5KΩ, TJ = 25°C, CI = 0.1 µF, CO = 100 µF, VI = 14V, IO = 10mA, VINH = 0V, unless otherwise
specified).
Symbol
VI
Parameter
Test Conditions
TJ = -40 to 125°C
VREF
Maximum Operating Input IO = 10 mA
Voltage
Reference Voltage (Note 1)
VREF
Reference Voltage (Note 1) IO = 100 mA
TJ = -40 to 125°C
∆VO
Line Regulation
VI = 3.6 to 26 V
∆VO
Load Regulation
IO = 5 to 100 mA
Vd
Id
ISC
Min.
Typ.
26
37
1.14
1.2
1.26
V
1.08
1.2
1.32
V
0.6
4.5
mV
9
30
mV
mV
Dropout Voltage (Note 1, 2) IO = 10 mA
Quiescent Current
ON MODE
OFF MODE
Max.
Unit
V
90
200
IO = 100 mA
250
600
IO = 100 mA
2.5
30
mA
0.3
1
mA
VINH = 2.5 V
RLOAD = 300 Ω
VI = 14 ± 2 V
TJ = -40 to 125°C
Short Circuit Current
SVR
Supply Voltage Rejection
IO = 100 mA
f = 120 Hz
VIL
Control Input Voltage Low
TJ = -40 to 125°C
VIH
Control Input Voltage High
TJ = -40 to 125°C
IINH
100
300
mA
55
80
dB
3.25
2
2
V
V
Inhibit Input Current
VINH = 2.5 V
VI
Transient Input Voltage
RLOAD = 300 Ω
τ < 100ms
60
70
V
VI
Reverse Polarity Input
Voltage
Reverse Polarity Input
Voltage Transient
Output Noise Voltage
VO = ± 0.3 V
RLOAD = 300 Ω
-15
-50
V
RLOAD = 300 Ω
τ < 100ms
-50
VI
eN
22
1.2
B =10 Hz to 100 KHz
Note 1: Reference Voltage is measured from VOUT to ADJ pin.
Note 2: Vd measured when the output voltage has dropped 100mV from the nominal value obtained at 14V.
8/19
50
µA
V
330
µVRMS
LM2931 SERIES
TYPICAL CHARACTERISTICS (unless otherwise specified CI = 0.1 µF, CO = 100 µF).
Figure 1 : Output Voltage vs Temperature
Figure 4 : Line Regulation vs Temperature
Figure 2 : Output Voltage vs Temperature
Figure 5 : Load Regulation vs Temperature
Figure 3 : Reference Voltage vs Temperature
Figure 6 : Dropout Voltage vs Temperature
9/19
LM2931 SERIES
Figure 7 : Dropout Voltage vs Temperature
Figure 10 : Short Circuit Current vs Drop
Voltage
Figure 8 : Dropout Voltage vs Output Current
Figure 11 : Quiescent Current vs Temperature
Figure 9 : Output Voltage vs Input Voltage
Figure 12 : Quiescent Current vs Input Voltage
10/19
LM2931 SERIES
Figure 13 : Quiescent Current vs Output Current
Figure 16 : Supply Voltage Rejection vs
Output Current
Figure 14 : Supply Voltage Rejection vs
Temperature
Figure 17 : Stability vs CO
Figure 15 : Supply Voltage Rejection vs
Frequency
Figure 18 : Line Transient
VI = 6 to 20 V, RL = 500Ω, T J = 25°C, C I = 0, CO = 100µF,
Rise Fall-Time = 200 ns
11/19
LM2931 SERIES
Figure 19 : Load Transient
VI = 14 V, IO = 100mA, T J = 25°C, CI = 0.1µF, CO = 100µF,
Rise Time = 500ns, Fall-Time = 1µs
12/19
LM2931 SERIES
TO-220 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
inch
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
P011C
13/19
LM2931 SERIES
TO-92 MECHANICA DATA
mm.
mils
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
4.32
4.95
170.1
194.9
b
0.36
0.51
14.2
20.1
D
4.45
4.95
175.2
194.9
E
3.30
3.94
129.9
155.1
e
2.41
2.67
94.9
105.1
e1
1.14
1.40
44.9
55.1
L
12.7
15.49
500.0
609.8
R
2.16
2.41
85.0
94.9
S1
0.92
1.52
36.2
59.8
W
0.41
0.56
16.1
22.0
0102782/C
14/19
LM2931 SERIES
SO-8 MECHANICAL DATA
DIM.
mm.
MIN.
TYP
inch
MAX.
MIN.
TYP.
MAX.
A
1.35
1.75
0.053
0.069
A1
0.10
0.25
0.04
0.010
A2
1.10
1.65
0.043
0.065
B
0.33
0.51
0.013
0.020
C
0.19
0.25
0.007
0.010
D
4.80
5.00
0.189
0.197
E
3.80
4.00
0.150
0.157
e
1.27
0.050
H
5.80
6.20
0.228
0.244
h
0.25
0.50
0.010
0.020
L
0.40
1.27
0.016
0.050
k
ddd
8˚ (max.)
0.1
0.04
0016023/C
15/19
LM2931 SERIES
DPAK MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
MAX.
MIN.
TYP.
MAX.
A
2.2
2.4
0.086
A1
0.9
1.1
0.035
0.094
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
D1
E
5.1
6.4
0.244
0.200
6.6
0.252
0.260
E1
4.7
0.185
e
2.28
0.090
e1
4.4
4.6
0.173
0.181
H
9.35
10.1
0.368
0.397
L
(L1)
L2
L4
1
0.039
2.8
0.110
0.8
0.6
0.031
1
0.023
0.039
0068772-F
16/19
LM2931 SERIES
Tape & Reel DPAK-PPAK MECHANICAL DATA
mm.
inch
DIM.
MIN.
TYP
A
MAX.
MIN.
TYP.
330
13.0
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
13.2
MAX.
0.504
0.512
22.4
0.519
0.882
Ao
6.80
6.90
7.00
0.268
0.272
0.2.76
Bo
10.40
10.50
10.60
0.409
0.413
0.417
Ko
2.55
2.65
2.75
0.100
0.104
0.105
Po
3.9
4.0
4.1
0.153
0.157
0.161
P
7.9
8.0
8.1
0.311
0.315
0.319
17/19
LM2931 SERIES
Tape & Reel SO-8 MECHANICAL DATA
mm.
inch
DIM.
MIN.
A
MAX.
MIN.
330
13.2
TYP.
MAX.
12.992
C
12.8
D
20.2
0.795
N
60
2.362
T
18/19
TYP
0.504
22.4
0.519
0.882
Ao
8.1
8.5
0.319
0.335
Bo
5.5
5.9
0.216
0.232
Ko
2.1
2.3
0.082
0.090
Po
3.9
4.1
0.153
0.161
P
7.9
8.1
0.311
0.319
LM2931 SERIES
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19/19
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