LM2931D-R STMicroelectronics, LM2931D-R Datasheet

LM2931D-R

Manufacturer Part Number

LM2931D-R

Description

IC REG LDO 100MA 2.5-26V 8-SOIC

Manufacturer

STMicroelectronics

Datasheet

1.LM2931AZ50R.pdf (21 pages)

Specifications of LM2931D-R

Regulator Topology

Positive Adjustable

Voltage - Output

2.5 ~ 26 V

Voltage - Input

Up to 26V

Voltage - Dropout (typical)

0.25V @ 100mA

Number Of Regulators

Current - Output

100mA

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Number Of Outputs

Polarity

Positive

Input Voltage Max

40 V

Output Voltage

2.5 V to 26 V

Output Type

Adjustable

Dropout Voltage (max)

0.2 V at 10 mA

Output Current

100 mA

Line Regulation

4.5 mV

Load Regulation

30 mV

Voltage Regulation Accuracy

4 %

Maximum Operating Temperature

+ 125 C

Mounting Style

SMD/SMT

Minimum Operating Temperature

- 40 C

Reference Voltage

1.26 V

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

Details

Other names

497-7817-2
LM2931D-R

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

LM2931D-R

Manufacturer:

Quantity:

21 000

Company:

BOSTOCK HK LIMITED

Part Number:

LM2931D-R

Manufacturer:

Company:

Allchip Electronic(HK) Limited

Part Number:

LM2931D-R

Manufacturer:

Quantity:

17 217

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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 with the older L78Lxx family, a

shutdown logic control function is available.

This means that when the device is used as a

local regulator it is possible to put a part of the

board in standby, decreasing total power

consumption. Ideal for automotive applications,

LM2931xx is protected from reverse battery

installations or 2 battery jumps. During the

transient, such as a 60 V load dump, when the

Table 1.

May 2010

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 and 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, SO-8 (with

inhibit control)

LM2931ADT50R

DPAK

Device summary

OUT

Very low drop voltage regulators with inhibit function

= 2.5 V only SO-8) and

LM2931AZ50R

Order codes

TO-92 (Bag)

Doc ID 6740 Rev 19

LM2931XX, LM2931AXX33

input voltage can exceed the specified maximum

operating input voltage of 26 V, the regulator

automatically shuts down to protect both internal

circuitry and the load.

LM2931AD33R

LM2931AD50R

LM2931D-R

SO-8

DPAK

LM2931AXX50

SO-8

Output voltages

2.5 to 26 V

TO-92

3.3 V

5.0 V

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LM2931D-R Summary of contents

Page 1

... V, the regulator automatically shuts down to protect both internal circuitry and the load. Order codes TO-92 (Bag) LM2931AD33R LM2931AZ50R LM2931AD50R LM2931D-R Doc ID 6740 Rev 19 LM2931AXX50 DPAK TO-92 SO-8 Output voltages SO-8 3 ...

Page 2

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

Page 3

LM2931XX, LM2931AXX33, LM2931AXX50 1 Diagram Figure 1. Schematic diagram Doc ID 6740 Rev 19 Diagram 3/21 ...

Page 4

Pin configuration 2 Pin configuration Figure 2. Pin connections (top view) DPAK 4/21 LM2931XX, LM2931AXX33, LM2931AXX50 PIN OUT PIN 2 = GND PIN BOTTOM VIEW TO-92 Doc ID 6740 Rev 19 SO-8 ...

Page 5

LM2931XX, LM2931AXX33, LM2931AXX50 3 Maximum ratings Table 2. Absolute maximum ratings Symbol V DC positive input voltage reverse input voltage I V Transient input voltage (τ < 100 ms Transient reverse input voltage (τ < ...

Page 6

Application circuits 4 Application circuits Figure 3. Application circuit for fixed output Figure 4. Application circuit for adjustable output Note: R suggested value = 27 kΩ REF 1 6/21 LM2931XX, LM2931AXX33, LM2931AXX50 ...

Page 7

LM2931XX, LM2931AXX33, LM2931AXX50 5 Electrical characteristics Refer to the application circuit mA INH Table 4. Electrical characteristics of LM2931Axx33 Symbol Parameter Maximum operating input V I voltage V Output voltage O V Output voltage O ...

Page 8

Electrical characteristics Refer to the application circuit 10 mA unless otherwise specified. INH Table 5. Electrical characteristics of LM2931Axx50 Symbol Parameter Maximum operating input V I voltage V Output voltage O V Output voltage O ΔV ...

Page 9

LM2931XX, LM2931AXX33, LM2931AXX50 Refer to the application circuit C = 0.1 µ 100 µ Table 6. Electrical characteristics of LM2931xx Symbol Parameter Maximum operating input V I voltage (1) V Reference voltage REF (1) V ...

Page 10

Typical characteristics 6 Typical characteristics Unless otherwise specified C Figure 5. Output voltage vs. temperature Figure 7. Reference voltage vs. temperature Figure 9. Load regulation vs. temperature 10/21 LM2931XX, LM2931AXX33, LM2931AXX50 = 0.1 µ 100 µ ...

Page 11

LM2931XX, LM2931AXX33, LM2931AXX50 Figure 11. Dropout voltage vs. temperature Figure 13. Output voltage vs. input voltage Figure 15. Quiescent current vs. temperature Figure 12. Dropout voltage vs. output current Figure 14. Short circuit current vs. drop voltage Figure 16. Quiescent ...

Page 12

Typical characteristics Figure 17. Quiescent current vs. output current Figure 19. Supply voltage rejection vs. frequency Figure 21. Stability vs 12/21 LM2931XX, LM2931AXX33, LM2931AXX50 Figure 18. Supply voltage rejection vs. temperature Figure 20. Supply voltage rejection vs. output ...

Page 13

LM2931XX, LM2931AXX33, LM2931AXX50 Figure 23. Line transient 100 mA 25° Rise Time = 500 ns, Fall-Time = 1 µs = 0.1 µ 100 µF, O ...

Page 14

Package mechanical data 7 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available ...

Page 15

LM2931XX, LM2931AXX33, LM2931AXX50 Dim. Min. 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 α TO-92 mechanical data mm. Typ. Max. 4.95 0.51 4.95 3.94 2.67 1.40 15.49 2.41 ...

Page 16

Package mechanical data Dim. Min. A 2.2 A1 0.9 A2 0.03 B 0.64 b4 5.2 C 0. 4 (L1 0 0° 16/21 ...

Page 17

LM2931XX, LM2931AXX33, LM2931AXX50 Dim. Min. A 1.35 A1 0.10 A2 1.10 B 0.33 C 0.19 D 4. 5.80 h 0.25 L 0.40 k ddd SO-8 mechanical data mm. Typ. Max. 1.75 0.25 1.65 0.51 0.25 5.00 ...

Page 18

Package mechanical data Tape & reel DPAK-PPAK mechanical data Dim. Min 12 6.80 Bo 10.40 Ko 2.55 Po 3.9 P 7.9 18/21 LM2931XX, LM2931AXX33, LM2931AXX50 mm. Typ. Max. 330 13.0 13.2 0.504 ...

Page 19

LM2931XX, LM2931AXX33, LM2931AXX50 Dim. Min 12 8.1 Bo 5.5 Ko 2.1 Po 3.9 P 7.9 Tape & reel SO-8 mechanical data mm. Typ. Max. 330 13.2 22.4 8.5 5.9 2.3 4.1 8.1 ...

Page 20

Revision history 8 Revision history Table 7. 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 10-Jul-2008 18 26-May-2010 19 20/21 LM2931XX, LM2931AXX33, LM2931AXX50 Document updated. Order codes updated. Added Table 1 ...

Page 21

... LM2931XX, LM2931AXX33, LM2931AXX50 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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