MOTOROLA LM2931 Technical data

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The LM2931 series consists of positive fixed and adjustable output voltage regulators that are specifically designed to maintain proper regulation with an extremely low input–to–output voltage differential. These devices are capable of supplying output currents in excess of 100 mA and feature a low bias current of 0.4 mA at 10 mA output.
Designed primarily to survive in the harsh automotive environment, these devices will protect all external load circuitry from input fault conditions caused by reverse battery connection, two battery jump starts, and excessive line transients during load dump. This series also includes internal current limiting, thermal shutdown, and additionally, is able to withstand temporary power–up with mirror–image insertion.
Due to the low dropout voltage and bias current specifications, the LM2931 series is ideally suited for battery powered industrial and consumer equipment where an extension of useful battery life is desirable. The ‘C’ suffix adjustable output regulators feature an output inhibit pin which is extremely useful in microprocessor–based systems.
Input–to–Output Voltage Differential of < 0.6 V @ 100 mA
Output Current in Excess of 100 mA
Low Bias Current
60 V Load Dump Protection
–50 V Reverse Transient Protection
Internal Current Limiting with Thermal Shutdown
Temporary Mirror–Image Protection
Ideally Suited for Battery Powered Equipment
Economical 5–Lead TO–220 Package with T wo Optional Leadforms
Available in Surface Mount SOP–8, D
High Accuracy (±2%) Reference (LM2931AC) Available
(See Following Page for Ordering Information.)
2
P AK and DPAK Packages
LOW DROPOUT
VOLTAGE REGULATORS
FIXED OUTPUT VOLTAGE
Z SUFFIX
PLASTIC PACKAGE
CASE 29
1
2
3
PLASTIC PACKAGE
CASE 221A
Heatsink surface
connected to Pin 2.
1
3
DT SUFFIX
PLASTIC PACKAGE
CASE 369A
(DPAK)
D2T SUFFIX
PLASTIC PACKAGE
CASE 936
(D2PAK)
Heatsink surface (shown as terminal 4 in
case outline drawing) is connected to Pin 2.
1
2
3
1
2
DT–1 SUFFIX
PLASTIC PACKAGE
CASE 369
(DPAK)
2
1
3
Pin 1. Output
2. Ground
3. Input
Pin 1. Input
2. Ground
3. Output
3
FIXED
N.C. Gnd
Input
Output
Inhibit
Gnd
Input
54
(Top View)
ADJUSTABLE
54
(Top View)
N.C. Gnd
Output18
Adjust Gnd Output18
8
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SOP–8)
1
MOTOROLA ANALOG IC DEVICE DATA
ADJUSTABLE OUTPUT VOLTAGE
TH SUFFIX
PLASTIC PACKAGE
CASE 314A
1
5
TV SUFFIX
PLASTIC PACKAGE
CASE 314B
PLASTC PACKAGE
CASE 314D
Heatsink surface connected to Pin 3.
1
1
5
Motorola, Inc. 1997 Rev 4
Pin 1. Adjust
2. Output Inhibit
3. Ground
4. Input
5. Output
1
5
5
D2T SUFFIX
PLASTIC PACKAGE
CASE 936A
(D2PAK)
Heatsink surface (shown as
terminal 6 in case outline
drawing) is connected to Pin 3.
1
LM2931 Series
±3.8%
5.0 V
j
ORDERING INFORMATION
Output
Device
LM2931AD–5.0 LM2931ADT–5.0 LM2931ADT–1–5.0 LM2931AD2T–5.0 LM2931A T–5.0 LM2931AZ–5.0 LM2931D–5.0 LM2931D2T–5.0 LM2931DT–5.0 LM2931DT–1–5.0 LM2931T–5.0 LM2931Z–5.0 LM2931CD LM2931CD2T LM2931CT LM2931CTH LM2931CTV 314B 5–Pin Vertical Leadform LM2931ACD LM2931ACD2T LM2931ACT LM2931ACTH 314A 5–Pin Horizontal Leadform LM2931ACTV 314B 5–Pin Vertical Leadform
Voltage Tolerance
±5.0%
Adjustable
Adjustable ±2.0%
Case Package
751 SOP–8 Surface Mount
369A Surface Mount DPAK
369 DPAK 936 Surface Mount D2PAK
221A TO–220 Type
29 TO–92 Type 751 SOP–8 Surface Mount 936 Surface Mount D2PAK
369A Surface Mount DPAK
369 DPAK
221A TO–220 Type
29 TO–92 Type 751 SOP–8 Surface Mount
936A Surface Mount D2PAK 314D 5–Pin TO–220 Type 314A 5–Pin Horizontal Leadform
751 SOP–8 Surface Mount
936A Surface Mount D2PAK 314D 5–Pin TO–220 Type
Input
Output
30 k *
Adjust
92.8 k *
Ground
*Deleted on Adjustable Regulators
6.0
30 k
3.94 k
3.0 k
11.5 k
Representative Schematic Diagram
6.0 k
350
500
30 k
EPI Bias
This device contains 26 active transistors.
50 k
30 k
Output
Inhibit
35 k
6.8 V
48 k
180 k 184 k
10 k
5.8 V
2
MOTOROLA ANALOG IC DEVICE DATA
LM2931 Series
MAXIMUM RATINGS
Rating Symbol Value Unit
Input Voltage Continuous V
I
Transient Input V oltage (τ 100 ms) VI(τ) 60 Vpk Transient Reverse Polarity Input V oltage –VI(τ) –50 Vpk
1.0% Duty Cycle, τ 100 ms
Power Dissipation Case 29 (TO–92 Type)
TA = 25°C P Thermal Resistance, Junction–to–Ambient R Thermal Resistance, Junction–to–Case R
D
θJA θJC
Case 221A, 314A, 314B and 314D (TO–220 T ype)
TA = 25°C P Thermal Resistance, Junction–to–Ambient R Thermal Resistance, Junction–to–Case R
D
θJA θJC
Case 369 and 369A (DPAK) [Note 1]
TA = 25°C P Thermal Resistance, Junction–to–Ambient R Thermal Resistance, Junction–to–Case R
D
θJA θJC
Case 751 (SOP–8) [Note 2]
TA = 25°C P Thermal Resistance, Junction–to–Ambient R Thermal Resistance, Junction–to–Case R
D
θJA θJC
Case 936 and 936A (D2PAK) [Note 3]
TA = 25°C P Thermal Resistance, Junction–to–Ambient R Thermal Resistance, Junction–to–Case R
Tested Operating Junction Temperature Range T Storage Temperature Range T
NOTES: 1. DPAK Junction–to–Ambient Thermal Resistance is for vertical mounting. Refer to Figure 24 for
board mounted Thermal Resistance.
2.SOP–8 Junction–to–Ambient Thermal Resistance is for minimum recommended pad size. Refer to Figure 23 for Thermal Resistance variation versus pad size.
3.D2PAK Junction–to–Ambient Thermal Resistance is for vertical mounting. Refer to Figure 25 for board mounted Thermal Resistance.
4.ESD data available upon request.
D
θJA θJC
J
stg
40 Vdc
Internally Limited W
178 °C/W
83 °C/W
Internally Limited W
65 °C/W
5.0 °C/W
Internally Limited W
92 °C/W
6.0 °C/W
Internally Limited W
160 °C/W
25 °C/W
Internally Limited W
70 °C/W
5.0 °C/W
–40 to +125 °C –65 to +150 °C
ELECTRICAL CHARACTERISTICS (V
= 14 V, IO = 10 mA, CO = 100 µF, C
in
= 0.3 , TJ = 25°C [Note 1].)
O(ESR)
LM2931–5.0 LM2931A–5.0
Characteristic Symbol
Min Typ Max Min Typ Max
Unit
FIXED OUTPUT
Output Voltage V
O
V Vin = 14 V, IO = 10 mA, TJ = 25°C 4.75 5.0 5.25 4.81 5.0 5.19 Vin = 6.0 V to 26 V, IO 100 mA, TJ = –40° to +125°C 4.50 5.50 4.75 5.25
Line Regulation Reg
line
mV Vin = 9.0 V to 16 V 2.0 10 2.0 10 Vin = 6.0 V to 26 V 4.0 30 4.0 30
Load Regulation (IO = 5.0 mA to 100 mA) Reg Output Impedance Z
load O
14 50 14 50 mV
m IO = 10 mA, IO = 1.0 mA, f = 100 Hz to 10 kHz 200 200
Bias Current I
B
mA Vin = 14 V, IO = 100 mA, TJ = 25°C 5.8 30 5.8 30 Vin = 6.0 V to 26 V, IO = 10 mA, TJ = –40° to +125°C 0.4 1.0 0.4 1.0
Output Noise Voltage (f = 10 Hz to 100 kHz) V
n
700 700 µVrms
Long Term Stability S 20 20 mV/kHR
NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2.The reference voltage on the adjustable device is measured from the output to the adjust pin across R1.
MOTOROLA ANALOG IC DEVICE DATA
3
LM2931 Series
ELECTRICAL CHARACTERISTICS
Characteristic Symbol
FIXED OUTPUT
Ripple Rejection (f = 120 Hz) RR 60 90 60 90 dB Dropout Voltage VI–V
IO = 10 mA 0.015 0.2 0.015 0.2 IO = 100 mA 0.16 0.6 0.16 0.6
Over–Voltage Shutdown Threshold V Output Voltage with Reverse Polarity Input (Vin = –15 V) –V
ELECTRICAL CHARACTERISTICS (V
Characteristic Symbol Min Typ Max Min Typ Typ Unit
ADJUSTABLE OUTPUT
Reference Voltage (Note 2, Figure 18) V
IO = 10 mA, TJ = 25°C 1.14 1.20 1.26 1.17 1.20 1.23 IO 100 mA, TJ = –40 to +125°C 1.08 1.32 1.15 1.25
Output Voltage Range VO
Line Regulation (Vin = VO + 0.6 V to 26 V) Reg Load Regulation (IO = 5.0 mA to 100 mA) Reg Output Impedance Z
IO = 10 mA, IO = 1.0 mA, f = 10 Hz to 10 kHz 40 40
Bias Current I
IO = 100 mA 6.0 6.0 – IO = 10 mA 0.4 1.0 0.4 1.0
Output Inhibited (V
Adjustment Pin Current I
Output Noise Voltage (f = 10 Hz to 100 kHz) V Long–Term Stability S 0.4 0.4 %/kHR Ripple Rejection (f = 120 Hz) RR 0.10 0.003 0.10 0.003 %/V Dropout Voltage VI–V
IO = 10 mA 0.015 0.2 0.015 0.2 IO = 100 mA 0.16 0.6 0.16 0.6
Over–Voltage Shutdown Threshold V Output Voltage with Reverse Polarity Input (Vin = –15 V) –V Output Inhibit Threshold Voltages V
Output “On”: TJ = 25°C 2.15 1.90 2.15 1.90
Output “Off”: TJ = 25°C 2.50 2.26 2.50 2.26
Output Inhibit Threshold Current (V
NOTES: 1. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
2.The reference voltage on the adjustable device is measured from the output to the adjust pin across R1.
= 2.5 V) 0.2 1.0 0.2 1.0
th(OI)
TJ = –40° to +125°C 1.20 1.20
TJ = –40° to +125°C 3.25 3.25
(Vin = 14 V, IO = 10 mA, CO = 100 µF, C
th(OV)
O
= 14 V, IO = 10 mA, CO = 100 µF, C
in
ref
range
line load O
B
Adj
n
th(OV)
O
th(OI)
= 2.5 V) I
th(OI)
th(OI)
= 0.3 , TJ = 25°C [Note 1].)
O(ESR)
LM2931–5.0 LM2931A–5.0
Min Typ Max Min Typ Max
O
26 29.5 40 26 29.5 40 V
–0.3 0 –0.3 0 V
= 0.3 , TJ = 25°C [Note 1].)
O(ESR)
LM2931C LM2931AC
3.0 to242.7 to
29.5 – 0.2 1.5 0.2 1.5 mV/V – 0.3 1.0 0.3 1.0 %/V
0.2 0.2 µA – 140 140 µVrms/V
O
26 29.5 40 26 29.5 40 V
–0.3 0 –0.3 0 V
30 50 30 50 µA
3.0 to242.7 to
29.5
Unit
V
mΩ/V
mA
V
V
V
V
4
MOTOROLA ANALOG IC DEVICE DATA
LM2931 Series
Figure 1. Dropout Voltage versus Output Current
200
Vin = 14 V
V
= 100 mV
out
°
C
TJ = 25
0 20 40 60 80 100
IO, OUTPUT CURRENT (mA)
, DROPOUT VOLTAGE (mV)V –V
160
120
80
40
in O
0
300
Vin = 14 V
V
200
100
, DROPOUT VOLTAGE (mV)V –V
in O
0
0 25 50 75 100 125
Junction T emperature
= 100 mV
out
TJ, JUNCTION TEMPERATURE (°C)
IO = 100 mA
IO = 50 mA
IO = 10 mA
Figure 3. Peak Output Current versus Input Voltage Figure 4. Output Voltage versus Input Voltage
Figure 2. Dropout Voltage versus
350
250
TJ = –40°C
TJ = 25°C
TJ = 85°C
6.0
5.0
4.0
3.0
V
= 5.0 V
out
TA = 25
°
C
150
, OUTPUT CURRENT (mA)
O
I
50
0 5.0 10 15 20 25 30
Dashed lines below Vin = 5.0 V are for Adjustable output devices only.
Vin, INPUT VOLTAGE (V)
2.0
, OUTPUT VOL TAGE (V)
O
V
1.0
0
RL = 50
0 1.0 2.0 3.0 4.0 5.0 6.0
IO = 100 mA
Vin, INPUT VOLTAGE (V)
Figure 5. Output V oltage versus Input Voltage Figure 6. Load Dump Characteristics
6.0
5.0
4.0
3.0
2.0
, OUTPUT VOL TAGE (V)
O
V
1.0
0 –20 –10 0 10 20 30 40 50 60
Vin, INPUT VOLTAGE (V)
VCC = 15 V V
= 5.05 V
FB1
V
= 5.0 V
out
RL = 500 TA = 25°C
(10 V/DIV)
, INPUT VOLTAGE, OUTPUT VOL TAGE
in
V
0
0
(5.0 V/DIV)
O
V
t, TIME (50 ms/DIV)
V
= 5.0 V
out
RL = 50 CO = 100 µF
τ
= 150 ms
°
C
TA = 25
MOTOROLA ANALOG IC DEVICE DATA
5
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