MC79L05A [FAIRCHILD]

3-Terminal 0.1 A Negative Voltage Regulator-12; 三端0.1的负电压调节器， 12


型号：	MC79L05A
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	3-Terminal 0.1 A Negative Voltage Regulator-12 三端0.1的负电压调节器， 12 调节器
文件：	总6页 (文件大小：180K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

December 2012

MC79L05A / LM79L05A

3-Terminal 0.1 A Negative Voltage Regulator

Description

Features

These regulators employ internal current limiting and

thermal shutdown.

• Output Current up to 100 mA

• No External Components

• Internal Thermal Over load Protection

• Internal Short-Circuit Current Limiting

• Output Voltage Offered in ±5% Tolerance

• Output Voltage: -5 V

TO-92

SOT-89

1.GND 2.Input 3.Output

Ordering Information

Operating Tem-

Part Number

Top Mark

Package

Packing Method

perature Range

MC79L05ACHX

SOT-89

TO-92

Tape and Reel

Bulk

MC79L05ACP

LM79L05ACZ

0 ~ +125°C

MC79L05ACP

LM79L05ACZ

Bulk

Block Diagram

GND

R26

Q12

R15

Q10

Q11

R22

R23+R21

Output

R18

Q15

Q13

R25

R27

Q17

R16

Q14

Q16

R28

R17

R29

R24

Input

Figure 1. Block Diagram

MC79L05A / LM79L05A Rev. 1.1.0

www.fairchildsemi.com

Absolute Maximum Ratings

Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be opera-

ble above the recommended operating conditions and stressing the parts to these levels is not recommended. In addi-

tion, extended exposure to stresses above the recommended operating conditions may affect device reliability. The

absolute maximum ratings are stress ratings only. Values are at T_A= 25°C unless otherwise noted.

Symbol

V_I

Parameter

Value

-30

Unit

Input Voltage

T_OPR

T_STG

Operating Temperature Range

Storage Temperature Range

0 ~ +125

-65 ~ +150

°C

Electrical Characteristics

V_I= -10 V, I_O= 40 mA, C_I= 0.33 μF, C_O= 0.1 μF, 0°C ≤ T_J≤ +125°C, unless otherwise specified.

Symbol Parameter Conditions Min. Typ. Max. Unit

V_O

Output Voltage

T_J= +25°C

-4.8

-5.0

-5.2

150

100

-7.0 V ≥ V_I≥ -20 V

ΔV_O

Line Regulation ⁽¹⁾

T_J=+25°C

-8 V ≥ V_I≥ -20 V

1.0 mA ≤ I_O≤ 100 mA

1.0 mA ≤ I_O≤ 40 mA

ΔV_O

V_O

I_Q

Load Regulation ⁽¹⁾

Output Voltage

T_J=+25°C

-7.0 V ≥ V_I≥ -20 V, 1.0 mA ≤ I_O≤ 40 mA -4.75

-5.25

5.5

V_I= -10 V, 1.0 mA ≤ I_O≤ 70 mA

T_J= +25°C

-4.75

2.0

Quiescent Current

T_J= +125°C

6.0

ΔI_Q

V_N

With Line -8 V ≥ V_I≥ -20 V

With Load 1.0 mA ≤ I_O≤ 40 mA

T_A= +25°C,10 Hz ≤ f ≤ 100 kHz

1.5

μV

Quiescent

Current Change

0.1

Output Noise Voltage

Ripple Rejection

Dropout Voltage

V_D

f = 120 Hz, -8 V ≥ V_I≥ -18 V, T_J= +25°C 41

T_J= +25°C

1.7

Note:

1. Load and line regulation are specified at constant junction temperature. Changes in V_Odue to heating effects must

be taken into account separately. Pulse testing with low duty is used.

MC79L05A / LM79L05A Rev. 1.1.0

www.fairchildsemi.com

Typical Application

Design Considerations

The MC79L05A / LC79L05A fixed-voltage regulators are designed with thermal overload protection that shuts down

the circuit when subjected to an excessive power overload condition. Internal short-circuit protection limits the maxi-

mum current the circuit will pass. In many low-current applications, compensation capacitors are not required. How-

ever, it is recommended that the regulator input be bypassed with a capacitor if the regulator is connected to the power

supply filter with long wire lengths, or if the output load capacitance is large. An input bypass capacitor should be

selected to provide good high-frequency characteristics to ensure stable operation under all load conditions. A 0.33 μF

or larger tantalum, mylar, or other capacitor having low internal impedance at high frequencies should be chosen. The

bypass capacitor should be mounted with the shortest possible leads directly across the regulator's input terminals.

Good construction techniques should be used to minimize ground loops and lead resistance drops since the regulator

has no external sense lead. Bypassing the output is also recommended.

LM78L05A

MC78L05A

MC79L05A

LM79L05A

MC79L05A

Figure 2. Positive And Negative Regulator

Figure 3. Typical Application

A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V

above the output voltage, even during the low point on the input ripple voltage.

* C_Iis required if regulator is located an appreciable distance from power supply filter.

** C_Oimproves stability and transient response.

MC79L05A / LM79L05A Rev. 1.1.0

www.fairchildsemi.com

Physical Dimensions

SOT-89

4.70

4.30

2.23 MIN

0.50

X 45°

1.87

0.30 X 45°

1.50

1.40

SYMM

2.70

2.30

5.30 MIN

90°

4.50

3.90

1.30

0.89

2.00 MIN

0.52

(2X)

0.30

0.10

0.54

1.50

A B

0.90 MIN 2X

0.96 MIN

3.00

1.50

3.00 MIN

1.70

1.30

LAND PATTERN

RECOMMENDATION

SEATING PLANE

0.60

0.40

0.50

0.35

2.29

2.13

2.70

NOTES: UNLESS OTHERWISE SPECIFIED.

A. REFERENCE TO JEDEC TO-243 VARIATION AA.

B. ALL DIMENSIONS ARE IN MILLIMETERS.

DOES NOT COMPLY JEDEC STANDARD VALUE.

D. DIMENSIONS ARE EXCLUSIVE OF BURRS,

MOLD FLASH AND TIE BAR PROTRUSION.

E. DIMENSION AND TOLERANCE AS PER ASME

Y14.5-1994.

F. DRAWING FILE NAME: MA03CREV2

Figure 4. 3-Lead, SOT-89, JEDEC TO-243, Option AA

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

For current tape and reel specifications, visit Fairchild Semiconductor’s online packaging area:

http://www.fairchildsemi.com/products/discrete/pdf/sot89_tr.pdf.

MC79L05A / LM79L05A Rev. 1.1.0

www.fairchildsemi.com

Physical Dimensions (Continued)

TO-92 Bulk Type

Figure 5. 3-Lead, TO-92, Molded, Standard Straight Lead

Package drawings are provided as a service to customers considering Fairchild components. Drawings may change in any manner

without notice. Please note the revision and/or date on the drawing and contact a Fairchild Semiconductor representative to verify or

obtain the most recent revision. Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the

warranty therein, which covers Fairchild products.

Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings:

http://www.fairchildsemi.com/packaging/.

MC79L05A / LM79L05A Rev. 1.1.0

www.fairchildsemi.com

TRADEMARKS

The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not

intended to be an exhaustive list of all such trademarks.

PowerTrench^®

PowerXS™

Programmable Active Droop¥

QFET^®

The Power Franchise^®

2Cool¥

F-PFS¥

FRFET^®

AccuPower¥

AX-CAP¥*

Global Power Resource^SM

GreenBridge¥

Green FPS¥

Green FPS¥ e-Series¥

Gmax¥

BitSiC¥

TinyBoost¥

TinyBuck¥

QS¥

Build it Now¥

CorePLUS¥

CorePOWER¥

CROSSVOLT¥

CTL¥

Quiet Series¥

RapidConfigure¥

TinyCalc¥

TinyLogic^®

GTO¥

IntelliMAX¥

TINYOPTO¥

TinyPower¥

TinyPWM¥

TinyWire¥

Saving our world, 1mW/W/kW at a time™

SignalWise¥

SmartMax¥

ISOPLANAR¥

Making Small Speakers Sound Louder

and Better™

Current Transfer Logic¥

DEUXPEED^®

Dual Cool™

EcoSPARK^®

EfficientMax¥

SMART START¥

Solutions for Your Success¥

SPM^®

TranSiC¥

MegaBuck¥

TriFault Detect¥

TRUECURRENT^®*

PSerDes¥

MICROCOUPLER¥

MicroFET¥

ESBC¥

STEALTH¥

SuperFET^®

MicroPak¥

MicroPak2¥

Fairchild^®

SuperSOT¥-3

MillerDrive¥

UHC^®

Ultra FRFET¥

UniFET¥

VCX¥

VisualMax¥

VoltagePlus¥

XS™

Fairchild Semiconductor^®

FACT Quiet Series¥

FACT^®

SuperSOT¥-6

SuperSOT¥-8

SupreMOS^®

MotionMax¥

mWSaver¥

OptoHiT¥

FAST^®

SyncFET¥

Sync-Lock™

OPTOLOGIC^®

OPTOPLANAR^®

FastvCore¥

FETBench¥

FPS¥

* Trademarks of System General Corporation, used under license by Fairchild Semiconductor.

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE

RELIABILITY, FUNCTION, OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT

OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. THESE

SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD’S WORLDWIDE TERMS AND CONDITIONS, SPECIFICALLY THE WARRANTY THEREIN,

WHICH COVERS THESE PRODUCTS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE

EXPRESS WRITTEN APPROVAL OF FAIRCHILD 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 (c) 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 of the user.

2. A critical component in 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.

ANTI-COUNTERFEITING POLICY

Fairchild Semiconductor Corporation's Anti-Counterfeiting Policy. Fairchild's Anti-Counterfeiting Policy is also stated on our external website, www.fairchildsemi.com,

under Sales Support.

Counterfeiting of semiconductor parts is a growing problem in the industry. All manufacturers of semiconductor products are experiencing counterfeiting of their

parts. Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation, substandard performance, failed

applications, and increased cost of production and manufacturing delays. Fairchild is taking strong measures to protect ourselves and our customers from the

proliferation of counterfeit parts. Fairchild strongly encourages customers to purchase Fairchild parts either directly from Fairchild or from Authorized Fairchild

Distributors who are listed by country on our web page cited above. Products customers buy either from Fairchild directly or from Authorized Fairchild Distributors

are genuine parts, have full traceability, meet Fairchild's quality standards for handling and storage and provide access to Fairchild's full range of up-to-date technical

and product information. Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address any warranty issues that may arise.

Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources. Fairchild is committed to combat this global

problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors.

PRODUCT STATUS DEFINITIONS

Definition of Terms

Datasheet Identification

Product Status

Definition

Datasheet contains the design specifications for product development. Specifications may change

in any manner without notice.

Advance Information

Formative / In Design

Datasheet contains preliminary data; supplementary data will be published at a later date. Fairchild

Semiconductor reserves the right to make changes at any time without notice to improve design.

Datasheet contains final specifications. Fairchild Semiconductor reserves the right to make

changes at any time without notice to improve the design.

Datasheet contains specifications on a product that is discontinued by Fairchild Semiconductor.

The datasheet is for reference information only.

Preliminary

No Identification Needed

Obsolete

First Production

Full Production

Not In Production

Rev. I63

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