LM2931AD33R,LM2931AD33R pdf中文资料,LM2931AD33R引脚图,LM2931AD33R电路-Datasheet-电子工程世界

器件参数

参数名称

属性值

欧盟限制某些有害物质的使用

Compliant

ECCN (US)

EAR99

Part Status

Active

HTS

8542.39.00.01

类型
Type

LDO

Number of Outputs

Polarity

Positive

输出类型
Output Type

Fixed

Output Voltage (V)

3.3

Maximum Output Current (A)

0.1

Minimum Input Voltage (V)

Maximum Dropout Voltage @ Current (V)

0.25@10mA|0.6@100mA

Line Regulation

33mV

Load Regulation

33mV

Maximum Quiescent Current (mA)

Junction to Ambient

55°C/W

Junction to Case

20°C/W

Special Features

Current Limit|Shutdown|Thermal Protection

Minimum Operating Temperature (°C)

-40

Maximum Operating Temperature (°C)

125

系列
Packaging

Tape and Reel

Supplier Package

SO N

Pin Count

Standard Package Name

SOP

Mounting

Surface Mount

Package Height

1.65(Max)

Package Length

5(Max)

Package Width

4(Max)

PCB changed

Lead Shape

Gull-wing

参考设计

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LM2931

Datasheet

Very low drop voltage regulators with inhibit function

Features

•

AEC-Q100 qualified (DPAK only)

Very low dropout voltage (90 mV 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

OUT

= 2.5 V only SO-8) and 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)

DPAK

TO-92

S O-8

Description

The

LM2931

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 L78L 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,

LM2931

is protected from reverse battery installations or 2 battery

jumps. During the transient, such as a 60 V load dump, when the 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.

Maturity status link

LM2931

DS1760

Rev 23

February 2018

For further information contact your local STMicroelectronics sales office.

www.st.com

LM2931

Diagram

Figure 2.

Schematic diagram

AMG110720161100MT

DS1760

Rev 23

page 2/26

LM2931

Pin configuration

Figure 3.

Pin connections (top view)

GND

DPAK

S O-8

P IN 1 = V

OUT

P IN 2 = GND

P IN 3 = V

TO-92

BOTTOM VIEW

AMG110720161101MT

Note:

(*) ADJ pin on the adjustable version, not connected in the fixed output version.

DS1760

Rev 23

page 3/26

LM2931

Maximum ratings

Table 1.

Absolute maximum ratings

Symbol

INH

STG

DC positive input voltage

DC reverse input voltage

Transient input voltage (Ƭ < 100 ms)

Transient reverse input voltage (Ƭ < 100 ms)

Inhibit input voltage

Output current

Storage temperature range

Operating junction temperature range

Parameter

Value

-15

-50

Internally limited

-65 to 150

-40 to 125

°C

Unit

Note:

Absolute maximum ratings are those values beyond which damage to the device may occur. Functional

operation under these condition is not implied.

Table 2.

Thermal data

Symbol

thJC

thJA

Parameter

Thermal resistance junction-case

Thermal resistance junction-ambient

SO-8

(1)

DPAK

100

TO-92

200

Unit

°C/W

1. Considering 6 cm

of copper board heat-sink.

DS1760

Rev 23

page 4/26

LM2931

Application circuits

Figure 4.

Application circuit for fixed output

AMG110720161102MT

Figure 5.

Application circuit for adjustable output

Note:

suggested value = 27 kΩ

= V

REF

+ R

)/R

Inhibit pin: regulator is enabled when V

INH

< 1.2 V , disabled when V

INH

> 3.25 V

DS1760

Rev 23

page 5/26

参数对比

与LM2931AD33R相近的元器件有：LM2931ADT50R、LM2931AZ50R、LM2931AD50R。描述及对比如下：

型号	LM2931AD33R	LM2931ADT50R	LM2931AZ50R	LM2931AD50R
描述	LDO Regulator Pos 3.3V 0.1A 8-Pin SO N T/R	LDO Regulator Pos 5V 0.1A 3-Pin(2+Tab) DPAK T/R	LDO Regulator Pos 5V 0.1A 3-Pin TO-92 T/R	LDO Regulator Pos 5V 0.1A 8-Pin SO N T/R
欧盟限制某些有害物质的使用	Compliant	Compliant with Exemption	Compliant	Compliant
ECCN (US)	EAR99	EAR99	EAR99	EAR99
Part Status	Active	Active	Active	Active
HTS	8542.39.00.01	8542.39.00.01	8542.39.00.01	8542.39.00.01
类型 Type	LDO	LDO	LDO	LDO
Number of Outputs	1	1	1	1
Polarity	Positive	Positive	Positive	Positive
输出类型 Output Type	Fixed	Fixed	Fixed	Fixed
Output Voltage (V)	3.3	5	5	5
Maximum Output Current (A)	0.1	0.1	0.1	0.1
Minimum Input Voltage (V)	26	26	26	26
Maximum Dropout Voltage @ Current (V)	0.25@10mA\|0.6@100mA	0.2@10mA\|0.6@100mA	0.6@100mA\|0.2@10mA	0.6@100mA\|0.2@10mA
Line Regulation	33mV	30mV	30mV	30mV
Load Regulation	33mV	50mV	50mV	50mV
Maximum Quiescent Current (mA)	30	30	30	30
Junction to Ambient	55°C/W	100°C/W	200°C/W	55°C/W
Special Features	Current Limit\|Shutdown\|Thermal Protection	Thermal Protection\|Shutdown\|Current Limit	Shutdown\|Current Limit\|Thermal Protection	Current Limit\|Shutdown\|Thermal Protection
Minimum Operating Temperature (°C)	-40	-40	-40	-40
Maximum Operating Temperature (°C)	125	125	125	125
系列 Packaging	Tape and Reel	Tape and Reel	Tape and Reel	Tape and Reel
Supplier Package	SO N	DPAK	TO-92	SO N
Pin Count	8	3	3	8
Standard Package Name	SOP	TO-252	TO-92	SOP
Mounting	Surface Mount	Surface Mount	Through Hole	Surface Mount
Package Height	1.65(Max)	2.4(Max)	4.95(Max)	1.65(Max)
Package Length	5(Max)	6.6(Max)	4.95(Max)	5(Max)
Package Width	4(Max)	6.2(Max)	3.94(Max)	4(Max)
PCB changed	8	2	3	8
Lead Shape	Gull-wing	Gull-wing	Formed	Gull-wing
Junction to Case	20°C/W	8°C/W	-	20°C/W