KA79M12RTF [FAIRCHILD]

3-Terminal 0.5A Negative Voltage Regulator; 三端0.5A负稳压器


型号：	KA79M12RTF
厂家：	FAIRCHILD SEMICONDUCTOR
描述：	3-Terminal 0.5A Negative Voltage Regulator 三端0.5A负稳压器线性稳压器IC 调节器电源电路输出元件
文件：	总8页 (文件大小：130K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

www.fairchildsemi.com

KA79MXX

3-Terminal 0.5A Negative Voltage Regulator

Features

Description

• No External Components Required

• Output Current in Excess of 0.5A

• Internal Thermal Overload

• Internal Short Circuit Current Limiting

• Output Transistor Safe Area Compensation

• Output Voltages of -5V, -12V

The KA79MXX series of 3-Terminal medium current

negative voltage regulators are monolithic integrated circuits

designed as fixed voltage regulators. These regulators

employ internal current limiting, thermal shutdown and

safe area compensation making them essentially

indestructible.

TO-220 (Dual Gauge)

D-PAK

1. GND 2. Input 3. Output

Schematic Diagram

GND

R10

R11

R12

Q15

Q13

R15

R14

Q12

Q14

Q10

Q11

Q16

R13

Q17

Q18

Q25

R16

Q24

OUT

R17

Q23

Q26

Q19

Q27

R23

R20

R22

R24

R19

R25

Q21

Q20

Q22

R18

R21

Rev. 1.0.3

KA79MXX

Absolute Maximum Ratings

Parameter

Symbol

Value

-35

Unit

Input Voltage(for V = -5V to -12V)

Thermal Resistance Junction-Cases

Thermal Resistance Junction-Air

Operating Temperature Range

Storage Temperature Range

C/W

C

JC

JA

OPR

0 ~ +125

-65 ~ +150

STG

C

Electrical Characteristics (KA79M05/KA79M05R)

(Refer to test circuit, 0CT +125C, l =350mA, V =-10V,unless otherwise specified, C =0.33F,C =0.1F)

Parameter

Symbol

Conditions

T = +25C

Min.

Typ.

Max.

Unit

-4.8

-5

-5.2

Output Voltage

= 5mA to 350mA

-4.75

-5

-5.25

V = -V7 to -25V

V = -7V to -25V

7.0

2.0

Line Regulation (Note1)

V

T =+25C

V = -8V to -25V

= 5mA to 500mA

Load Regulation (Note1)

Quiescent Current

100

T = +25C

3.0

6.0

0.4

= 5mA to 350mA

Quiescent Current Change

I

= 200mA

0.4

V = -8V to -25V

Output Voltage Drift

Output Noise Voltage

Vo/T

= 5mA

-0.2

mV/C

V

f = 10Hz to 100kHz, T = +25C

f = 120Hz

V = -8Vto -18V

Ripple Rejection

Dropout Voltage

Short Circuit Current

Peak Current

T =+25C, I = 500mA

1.1

140

650

T = +25C, V = -35V

T = +25C

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken

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

KA79MXX

Electrical Characteristics (KA79M12R) (Continued)

(Refer to test circuit, 0CT +125C, l =350mA, V = -19V,unless otherwise specified)

Parameter

Symbol

Conditions

Min. Typ. Max.

Unit

T = +25C

-11.5

-12 -12.5

Output Voltage

= 5mA to 350mA

-11.4

-12 -12.6

V = -14.5V to -30V

8.0

3.0

Line Regulation (Note1)

V

T =+25C

V = -15V to -25V

Load Regulation (Note1)

Quiescent Current

T = +25C

= 5.0mA to 500mA

240

T = +25C

= 5mA to 350mA

0.4

Quiescent Current Change

I

V = -14.5V to -30V

0.4

Output Voltage Drift

Output Noise Voltage

Ripple Rejection

Dropout Voltage

V /T

= 5mA

-0.8

1.1

140

650

mV/C

V

f = 10Hz to 100kHz, T = +25C

f = 120Hz,V = -15V to -25V

= 500mA, T = +25C

Short Circuit Current

Peak Current

V = -35V, T = +25C

T = +25C

Note:

1. Load and line regulation are specified at constant junction temperature. Change in V due to heating effects must be taken

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

KA79MXX

Typical Performance Characteristics

0.0

V_IN= -10V

V_O= -5V

-0.2

-0.4

-0.6

-0.8

-1.0

-1.2

I_OUT= 0mA

I_OUT= 300mA

I_OUT= 200mA

I_OUT= 100mA

I_OUT= 500mA

I_OUT= 400mA

100

125

150

T_A- Temperature [^oC]

Figure 1. Dropout Voltage

KA79MXX

Typical Applications

KA79MXX

1.0uF

2.0uF

Figure 2. Fixed Output Regulator

KA79MXX

SOLID

TANTALUM

1uF

2.2uF

SOLID

TANTALUM

25uF

Figure 3. Variable Output

Note:

1. Required for stability. For value given, capacitor must be solid tantalum. 25F aluminum electrolytic may be substituted.

2. C improves transient response and ripple rejection. Do not increase beyond 50F.

KA79MXX

Mechanical Dimensions

Package

Dimensions in millimeters

TO-220 [DUAL GAUGE]

4.50 0.20

+0.10

9.90 0.20

(8.70)

1.30

ø3.60 0.10

–0.05

1.27 0.10

2.54TYP

1.52 0.10

0.80 0.10

2.54TYP

+0.10

–0.05

0.50

2.40 0.20

[2.54 0.20

]

[2.54 0.20]

10.00 0.20

KA79MXX

Mechanical Dimensions (Continued)

Package

Dimensions in millimeters

D-PAK

KA79MXX

Ordering Information

Product Number

Package

Operating Temperature

KA79M05TU

KA79M05RTM

KA79M05RTF

KA79M12RTM

KA79M12RTF

TO-220 (Dual Gauge)

0 ~ +125C

D-PAK

* Refer to below figure for TM / TF suffix of DPAK packing option

TM :

TF :

D-PAK Unit Orientation

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.

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 THE PRESIDENT 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.

www.fairchildsemi.com

7/18/12 0.0m 001

Stock#DS400023

 2012 Fairchild Semiconductor Corporation

相关型号：