LM3480IM3X-5.0 [NSC]

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator; 百毫安， SOT -23 ，准低压降线性稳压器


型号：	LM3480IM3X-5.0
厂家：	National Semiconductor
描述：	100 mA, SOT-23, Quasi Low-Dropout Linear Voltage Regulator 百毫安， SOT -23 ，准低压降线性稳压器稳压器
文件：	总9页 (文件大小：280K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

June 1999

LM3480

100 mA, SOT-23, Quasi Low-Dropout Linear Voltage

Regulator

General Description

Key Specifications

n 30V maximum input for operation

The LM3480 is an integrated linear voltage regulator. It fea-

tures operation from an input as high as 30V and a guaran-

teed maximum dropout of 1.2V at the full 100 mA load. Stan-

dard packaging for the LM3480 is the 3-lead SuperSOT^®

package.

n 1.2V guaranteed maximum dropout over full load and

temperature ranges

n 100 mA guaranteed minimum load current

5% guaranteed output voltage tolerance over full load

The 5, 12, and 15V members of the LM3480 series are in-

tended as tiny alternatives to industry standard LM78LXX

series and similar devices. The 1.2V quasi low dropout of

LM3480 series devices makes them a nice fit in many appli-

cations where the 2 to 2.5V dropout of LM78LXX series de-

vices precludes their (LM78LXX series devices) use.

and temperature ranges

n −40 to +125˚C junction temperature range for operation

Features

n 3.3, 5, 12, and 15V versions available

n Packaged in the tiny 3-lead SuperSOT package

The LM3480 series features a 3.3V member. The SOT pack-

aging and quasi low dropout features of the LM3480 series

converge in this device to provide a very nice, very tiny 3.3V,

100 mA bias supply that regulates directly off the system

Applications

n Tiny alternative to LM78LXX series and similar devices

5V 5% power supply.

n Tiny 5V 5% to 3.3V, 100 mA converter

n Post regulator for switching DC/DC converter

n Bias supply for analog circuits

Typical Application Circuit

DS100070-2

Connection Diagram

DS100070-1

Top View

SOT-23 Package

3-Lead, Molded-Plastic Small-Outline Transistor (SOT) Package

Package Code MA03B (Note 1)

SuperSOT is a registered trademark of National Semiconductor.

DS100070

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Ordering Information

Output

Voltage

(V)

Order

Number

Package

Marking

(Note 3)

L0A

Comments

(Note 2)

3.3

LM3480IM3-3.3

LM3480IM3X-3.3

LM3480IM3-5.0

LM3480IM3X-5.0

LM3480IM3-12

LM3480IM3X-12

LM3480IM3-15

LM3480IM3X-15

250 Units on Tape and Reel

3k Units on Tape and Reel

250 Units on Tape and Reel

3k Units on Tape and Reel

250 Units on Tape and Reel

3k Units on Tape and Reel

250 Units on Tape and Reel

3k Units on Tape and Reel

L0A

L0B

L0C

L0D

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Absolute Maximum Ratings (Note 4)

ESD (Note 7)

2kV

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Operating Ratings (Note 4)

Max. Input Voltage (IN to GND)

Junction Temp. (T_J)

30V

−40 to +125˚C

250mW

Input Voltage (IN to GND)

Power Dissipation (Note 5)

Junction Temp. (Note 5)

Ambient Storage Temp.

35V

333mW

Max. Power Dissipation (Note 8)

+150˚C

−65 to +150˚C

Soldering Time, Temp. (Note 6)

Wave

Infrared

Vapor Phase

4 sec., 260˚C

10 sec., 240˚C

75 sec., 219˚C

Electrical Characteristics

LM3480-3.3, LM3480-5.0

Typicals and limits appearing in normal type apply for T_AT_J25˚C. Limits appearing in boldface type apply over the entire

junction temperature range for operation, −40 to +125˚C. (Notes 9, 10, 11)

Nominal Output Voltage (V_NOM

)

3.3V

Typical

5.0V

Typical

Units

Symbol

Parameter

Conditions

Limit

V_OUT

Output Voltage

V_INV_NOM+ 1.5V,

3.30

5.00

1 mA ≤ I_OUT≤ 100 mA

3.17

3.14

3.43

3.46

4.80

4.75

5.20

5.25

V(min)

V(max)

∆V_OUT

I_GND

Line Regulation

Load Regulation

V_NOM+ 1.5V ≤ V_IN≤ 30V,

mV(max)

I_OUT1 mA

V_INV_NOM+ 1.5V,

mV(max)

10 mA ≤ I_OUT≤ 100 mA

Ground Pin

Current

V_NOM+ 1.5V ≤ V_IN≤ 30V,

No Load

mA(max)

V_IN

Dropout Voltage

I_OUT10 mA

0.7

V_OUT

0.9

1.0

0.9

1.0

V(max)

I_OUT100 mA

0.9

1.1

1.2

1.1

1.2

V(max)

e_n

Output Noise

Voltage

V_IN10V,

100

150

µV_rms

Bandwidth: 10 Hz to 100 kHz

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LM3480-12, LM3480-15

Typicals and limits appearing in normal type apply for T_AT_J25˚C. Limits appearing in boldface type apply over the entire

junction temperature range for operation, −40 to +125˚C. (Notes 9, 10, 11)

Nominal Output Voltage (V_NOM

)

12V

15V

Units

Symbol

Parameter

Conditions

Typical

Limit

Typical

Limit

V_OUT

Output Voltage

V_INV_NOM+ 1.5V,

12.00

15.00

1 mA ≤ I_OUT≤ 100 mA

11.52

11.40

12.48

12.60

14.40

14.25

15.60

15.75

V(min)

V(max)

∆V_OUT

I_GND

Line Regulation

Load Regulation

V_NOM+ 1.5V ≤ V_IN≤ 30V,

mV(max)

I_OUT1 mA

V_INV_NOM+ 1.5V,

mV(max)

10 mA ≤ I_OUT≤ 100 mA

Ground Pin

Current

V_NOM+ 1.5V ≤ V_IN≤ 30V,

No Load

mA(max)

V_IN

Dropout Voltage

I_OUT10 mA

0.7

V_OUT

0.9

1.0

0.9

1.0

V(max)

I_OUT100 mA

0.9

1.1

1.2

1.1

1.2

V(max)

e_n

Output Noise

Voltage

V_IN10V,

360

450

µV_rms

Bandwidth: 10 Hz to 100 kHz

Note 1: The package code MA03B is internal to National Semiconductor Corporation and indicates a specific version of the SOT-23 package and associated me-

chanical drawings.

Note 2: The suffix “I” indicates the junction temperature range for operation is the industrial temperature range, −40 to +125˚C. The suffix “M3” indicates the die is

packaged in the 3-lead SOT-23 package. The suffix “X” indicates the devices will be supplied in blocks of 3k units as opposed to blocks of 250 units.

Note 3: Because the entire part number does not fit on the SOT-23 package, the SOT-23 package is marked with this code instead of the part number.

Note 4: Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the device

is guaranteed. Operating Ratings do not imply guaranteed performance limits. For guaranteed performance limits and associated test conditions, see the Electrical

Characteristics tables.

Note 5: The Absolute Maximum power dissipation depends on the ambient temperature and can be calculated using P (T - T )/θ where T is the junction tem-

perature, T is the ambient temperature, and θ is the junction-to-ambient thermal resistance. The 333 mW rating results from substituting the Absolute Maximum

junction temperature, 150˚C, for T , 50˚C for T , and 300˚C/W for θ . More power can be safely dissipated at lower ambient temperatures. Less power can be safely

dissipated at higher ambient temperatures. The Absolute Maximum power dissipation can be increased by 3.33 mW for each ˚C below 50˚C ambient. It must be de-

rated by 3.33 mW for each ˚C above 50˚C ambient. A θ of 300˚C/W represents the worst-case condition of no heat sinking of the 3-lead plastic SOT-23 package.

Heat sinking enables the safe dissipation of more power. The LM3480 actively limits its junction temperature to about 150˚C.

Note 6: Times shown are dwell times. Temperatures shown are dwell temperatures. For detailed information on soldering plastic small-outline packages, refer to the

Packaging Databook available from National Semiconductor Corporation.

Note 7: For testing purposes, ESD was applied using the human-body model, a 100 pF capacitor discharged through a 1.5 kΩ resistor.

Note 8: As with the Absolute Maximum power dissipation, the maximum power dissipation for operation depends on the ambient temperature. The 250 mW rating

appearing under Operating Ratings results from substituting the maximum junction temperature for operation, 125˚C, for T , 50˚C for T , and 300˚C/W for θ in

(T - T )/θ . More power can be dissipated at lower ambient temperatures. Less power can be dissipated at higher ambient temperatures. The maximum power

dissipation for operation appearing under Operating Ratings can be increased by 3.33 mW for each ˚C below 50˚C ambient. It must be derated by 3.33 mW for each

˚C above 50˚C ambient. A θ of 300˚C/W represents the worst-case condition of no heat sinking of the 3-lead plastic SOT-23 package. Heat sinking enables the dis-

sipation of more power during operation.

Note 9: A typical is the center of characterization data taken with T

25˚C. Typicals are not guaranteed.

25˚C. All hot and cold lim-

Note 10: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T

its are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.

Note 11: All voltages except dropout are with respect to the voltage at the GND pin.

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Typical Performance Characteristics Unless indicated otherwise, V_INV_NOM+ 1.5V, C_IN0.1 µF,

C_OUT0.1 µF, and T_{A .}25˚C.

Dropout Voltage

vs Load Current

Dropout Voltage

vs Junction Temperature

DS100070-19

DS100070-9

DS100070-21

DS100070-20

Ground Pin Current

vs Input Voltage

Ground Pin Current

vs Input Voltage

DS100070-10

Ground Pin Current

vs Load Current

Ground Pin Current

vs Junction Temperature

DS100070-22

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Typical Performance Characteristics Unless indicated otherwise, V_INV_NOM+ 1.5V, C_IN0.1 µF,

C_OUT0.1 µF, and T_{A .}25˚C. (Continued)

Input Current

vs Input Voltage

DS100070-11

DS100070-12

Line Transient Response

DS100070-3

DS100070-4

Load Transient Response

DS100070-5

DS100070-6

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Typical Performance Characteristics Unless indicated otherwise, V_INV_NOM+ 1.5V, C_IN0.1 µF,

C_OUT0.1 µF, and T_{A .}25˚C. (Continued)

Load Transient Response

DS100070-7

DS100070-8

Output Voltage

vs Input Voltage

Output Voltage

vs Input Voltage

DS100070-13

DS100070-14

Output Voltage

vs Input Voltage

Output Voltage

vs Input Voltage

DS100070-15

DS100070-16

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Typical Performance Characteristics Unless indicated otherwise, V_INV_NOM+ 1.5V, C_IN0.1 µF,

C_OUT0.1 µF, and T_{A .}25˚C. (Continued)

Output Short-

Circuit Current

Output Short-

Circuit Current

DS100070-17

DS100070-18

Power Supply

Rejection Ratio

Power Supply

Rejection Ratio

DS100070-24

DS100070-25

DC Load

Regulation

DS100070-23

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Physical Dimensions inches (millimeters) unless otherwise noted

SOT-23 Package

3-Lead Small-Outline Package (M3)

For Ordering, Refer to Ordering Information Table

NS Package Number MA03B

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NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT

DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL

COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

1. Life support devices or systems are devices or

systems which, (a) are intended for surgical implant

into the body, or (b) support or sustain life, and

whose failure to perform when properly used in

accordance with instructions for use provided in the

labeling, can be reasonably expected to result in a

significant injury to the user.

2. A critical component is any component of a life

support device or system whose failure to perform

can be reasonably expected to cause the failure of

the life support device or system, or to affect its

safety or effectiveness.

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Corporation

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Tel: 1-800-272-9959

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National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.

LM3480IM3X-5.0 [NSC]

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