lm2931az33r STMicroelectronics, lm2931az33r Datasheet

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lm2931az33r

Manufacturer Part Number
lm2931az33r
Description
Very Low Drop Voltage Regulators With Inhibit Function
Manufacturer
STMicroelectronics
Datasheet

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Features
Description
The LM2931xx 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 L78Lxx 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
Table 1.
1. Please note that in these cases pins are shaped according to tape & reel specifications.
February 2008
LM2931BV50
Very low dropout voltage (0.15 V typ. at 10 mA
load)
Low quiescent current (typ. 2.5 mA, at 100 mA
load)
Output current up to 100 mA
Adjustable (from V
fixed (3.3 V & 5 V) output voltage version
Internal current and thermal limit
Load dump protection up to 60 V
Reverse transient protection up to -50 V
Temperature range: -40 to 125 °C
Package available: TO-92, DPAK, TO-220,
SO-8 (with inhibit control)
TO-220
Device summary
LM2931ADT50R
OUT
DPAK
Very low drop voltage regulators with inhibit function
= 2.5 V only SO-8) and
LM2931AZ33R
LM2931AZ50R
LM2931BZ50R
Order codes
TO-92 (BAG)
Packages
LM2931AXX50 - LM2931BXX50
LM2931XX - LM2931AXX33
Rev 17
LM2931AZ50AP
LM2931BZ50AP
(Ammopak)
board 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 (60 V) when the
input voltage can exceed the specified maximum
operating input voltage (26 V), the regulator will
automatically shut down to protect both internal
circuit and the load.
TO-92
TO-220
DPAK
(1)
LM2931AD33R
LM2931AD50R
LM2931BD50R
LM2931D-R
SO-8
Output voltage
TO-92
SO-8
2.5 to 26 V
3.3 V
5.0 V
5.0 V
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lm2931az33r Summary of contents

Page 1

... V) when the input voltage can exceed the specified maximum operating input voltage (26 V), the regulator will automatically shut down to protect both internal circuit and the load. Order codes Packages TO-92 TO-92 (BAG) (1) (Ammopak) LM2931AZ33R LM2931AZ50R LM2931AZ50AP LM2931BZ50R LM2931BZ50AP Rev 17 TO-92 SO-8 Output voltage SO-8 LM2931AD33R 3 ...

Page 2

Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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Diagram Figure 1. Schematic diagram 3/24 ...

Page 4

Pin configuration Figure 2. Pin connections (top view) TO-220 PIN PIN 2 = GND PIN BOTTOM VIEW TO-92 4/24 OUT IN SO-8 DPAK ...

Page 5

Maximum ratings Table 2. Absolute maximum ratings Symbol V DC positive input voltage reverse input voltage I V Transient input voltage ( < 100 ms Transient reverse input voltage ( < 100 ms) I ...

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Application circuits Figure 3. Application circuit for fixed output Figure 4. Application circuit for adjustable output R suggested value = REF 1 6/24 )/ ...

Page 7

Electrical characteristics Table 4. Electrical characteristics of LM2931Axx33 (refer to the application circuit ° 0.1 µ specified). Symbol Parameter Maximum operating input V I voltage V Output voltage O V Output ...

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Table 5. Electrical characteristics of LM2931Axx50 (refer to the application circuit ° 0.1 µ specified). Symbol Parameter Maximum operating input V I voltage V Output voltage O V Output voltage O V ...

Page 9

Table 6. Electrical characteristics of LM2931Bxx50 (refer to the application circuit ° 0.1 µ specified). Symbol Parameter Maximum operating input V I voltage V Output voltage O V Output voltage O V ...

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Table 7. Electrical characteristics of LM2931xx (refer to the application circuit and unless otherwise specified). INH Symbol Parameter Maximum Operating Input V I Voltage (1) V Reference Voltage REF ...

Page 11

Typical characteristics (unless otherwise specified C Figure 5. Output voltage vs temperature Figure 7. Reference voltage vs temperature Figure 9. Load regulation vs temperature = 0.1 µ 100 µ Figure 6. Output voltage vs temperature ...

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Figure 11. Dropout voltage vs temperature Figure 13. Output voltage vs input voltage Figure 15. Quiescent current vs temperature 12/24 Figure 12. Dropout voltage vs output current Figure 14. Short circuit current vs drop voltage Figure 16. Quiescent current vs ...

Page 13

Figure 17. Quiescent current vs output current Figure 18. Supply voltage rejection vs Figure 19. Supply voltage rejection vs frequency Figure 21. Stability temperature Figure 20. Supply voltage rejection vs output current Figure 22. Line transient V ...

Page 14

Figure 23. Line transient 100 mA 25° 0.1 µ Rise Time = 500 ns, Fall-Time = 1 µs 14/24 = 100 µF, O ...

Page 15

Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...

Page 16

Dim. Min. A 4.40 C 1. 0.49 F 0.61 F1 1.14 F2 1.14 G 4.95 G1 2 13.0 L5 2.65 L6 15.25 L7 6.2 L9 3.5 DIA. 3.75 16/24 TO-220 mechanical data ...

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TO-92 mechanical data mm. Dim. Min. Typ. A 4.32 b 0.36 D 4.45 E 3.30 e 2.41 e1 1.14 L 12.7 R 2.16 S1 0.92 W 0.41 5° mils. Max. Min. Typ. 4.95 170.1 0.51 14.2 4.95 175.2 3.94 129.9 ...

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Dim. Min. A 2.2 A1 0.9 A2 0.03 B 0.64 b4 5.2 C 0. 4 (L1 0 0° 18/24 DPAK mechanical data ...

Page 19

SO-8 mechanical data mm. Dim. Min. Typ. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4.80 E 3.80 e 1.27 H 5.80 h 0.25 L 0.40 k ddd inch. Max. Min. Typ. 1.75 0.053 0.25 0.04 1.65 ...

Page 20

Tape & reel DPAK-PPAK mechanical data Dim. Min 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 20/24 mm. Typ. Max. Min. 330 13.0 13.2 0.504 0.795 2.362 22.4 6.90 7.00 ...

Page 21

Tape & reel SO-8 mechanical data mm. Dim. Min. Typ 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 inch. Max. Min. Typ. 330 13.2 0.504 0.795 2.362 22.4 8.5 0.319 ...

Page 22

Tape & reel for TO-92 mechanical data Dim. Min 12.5 P2 5.65 F1, F2 2.44 delta H W 17.5 W0 5 15. 3 delta P ...

Page 23

Revision history Table 8. Document revision history Date Revision 21-Jun-2004 12 16-Jun-2006 13 27-Jul-2007 14 21-Aug-2007 15 22-Nov-2007 16 11-Feb-2008 17 Changes Document updated. Order codes updated. Add Table 1 in cover page. Added root part number - (see ...

Page 24

... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...

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