Datasheet KA723, KA723D Datasheet (Fairchild Semiconductor)

KA723

Precision Voltage Regulator

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Features

• Positive or Negative Supply Operation

• 0.01% line and load regulation

• Output voltage adjustable from 2V to 37 V

• Output current to 150mA without external pass transistor

Internal Block Diagram

Description

The KA723 are monolithic integrated Circuit voltage regu­lators featuring high ripple rejection, excellent output and
load regulation, excellent temperature stability, and low
standby current. The KA723 are also useful in a wide range
of other applications such as a shunt regulator, a current reg­ulator or a temperature controller.

14-DIP

1

14-SOP

1

TEMP.

COMPENS

ZENER

REF
AMP

©2000 Fairchild Semiconductor International

V

REF

+Vcc

12

4

67

NON

-Vcc
INVERT
INPUT

INVERT
INPUT

ERROR

AMP

5

5

CURRENT

LIMIT

FREQUENCY

COMPENS

12

3

CURRENT
SENSE

Vo

11

SERIES PASS

TRANSISTOR

Vo

9

Vz

Rev. 5.0

KA723

Absolute Maximum Ratings

Parameter Symbol Value Unit

Pulse Voltage from V+ to V- (50ms) V
Continuous Voltage from V+ to V- V
Input-Output Voltage Differential V

I

Maximum Output Current I
Differential Input Voltage V
Voltage Between Non-Inverting Input and V- V
Current from V
Current from V

Z
REF

I

REF

Power Dissipation P
Operating Temperature Range T
Storage Temperature Range T

OPR
STG

I(P)

I

- V

O

ID
IE

I

Z

D

O

50 V
40 V
40 V

150 mA

±5 V

8V
25 mA
15 mA

1000 mV

0 ~ +70 °C

-65 ~ + 150 °C

Electrical Characteristics

(Unless otherwise specified, TA = 25°C, VIN =V+= VC = 12V, V-=O,V
divider impedance as seen by error amplifier ≤10KΩ connected as shown in figure 1)

= 5V, IL =1mA, R

OUT

= 0, CI = 100pF, C

SC

PEAK

REF

=0 and

Parameter Symbol Conditions Min Typ. Max. Unit

Line Regulation

Load Regulation

∆V

∆V

Ripple Rejection dB
Average Temperature Coefficient of

Output Voltage
Short Circuit Current Limit I
Reference Voltage V

∆V

O
SC

REF

Output Noise Voltage V

VI = 12V to 15V
V

= 12V to 40V

O

I

T

MIN ≤TA≤TMAX

VI = 12V to 15V

= 1mA to 50mA - 0.03 0.2

I

O

T

≤T≤T

MIN

O

IO = 1 to 50mA
f = 100Hz to 10KHz,C
f = 100Hz to 10KHz,C

/∆TT

MIN

≤T≤T

MAX

MAX

=0 - 74 -

REF

=5µF- 86 -

REF

RSC = 10Ω, VO = 0 - 65 - mA

- 6.80 7.15 7.50 V

f = 100Hz to 10KHz, C

N

f = 100Hz to 10KHz, C

= 0 - 20 -

REF

=5µF- 2.5 -

REF

0.01

-

0.1

0.1

0.5

--0.3

--0.6

- 0.003 0.015 %/°C

Long-term Stability ST - - 0.1 ­Standby Current Drain I

Input Voltage Range V
Output Voltage Range V
Input-Output Voltage Differential V

IL = 0, VI = 30V - 2.0 4.0 mA

D

I
O
D

-9.5-40V

-2.0-37V

-3.0-38V

%

%

dB

µVms

%/

1000HR

Notes:

1.Line and load regulation specifications are given for the condition of constant chip temperature.

2.Temperature drifts must be taken into account separately for hith dissipation conditions.

2

Typical Application

Figure 1. Basic Low Voltage Regulator

(V

= 2 to 7Volts)

OUT

KA723

R3

R1R2

--------------------- -=

R1 R2+

Note: for minimum temperature drift

Typical Performance

Regulated Output Voltage 5V
Line regulation ( ∆V
Load Regulation ( ∆V

= 3V ) 0.5mV

IN

= 50V ) 1.5mV

L

3

KA723

Mechanical Dimensions

Package

6.40 ±0.20

±0.008

0.252

14-DIP

Dimensions in millimeters

2.08

0.082

()

#1

#7

7.62

0.300

#14

#8

MAX

19.80

0.780

3.25 ±0.20

0.128 ±0.008

19.40 ±0.20

0.764 ±0.008

±0.10

0.46

0.20

0.008

0.018 ±0.004

2.54

MIN

1.50 ±0.10

0.100

0.059 ±0.004

5.08

MAX

0.200

+0.10

0.25

–0.05
+0.004

0.010

0~15°

4

–0.002

3.30 ±0.30

0.130 ±0.012

KA723

Mechanical Dimensions

Package

#1

(Continued)

14-SOP

#14

1.55

0.061

MAX

8.70

0.343

Dimensions in millimeters

0.05

MIN

0.002

±0.10

±0.004

0.47

0.10

±0.008

±0.20

8.56

0.337

-0.05

+

0.406

0.004

+

0.019

()

-0.002

0.016

0.10

+

-0.05

0.20

0.60

0.024

0.004

+

-0.002

0.008

±0.20

±0.008

#7

6.00

0.236

3.95

0.156

5.72

0.225

±0.30

±0.012

±0.20

±0.008

#8

0~8°

1.80

0.071

MAX

MAX0.10

MAX0.004

1.27

0.050

5

KA723

Ordering Information

Product Number Package Operating Temperature

KA723 14-DIP

KA723D 14-SOP

0 ~ +70°C

6

KA723

7

KA723

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURT HER NOTICE TO ANY
PRODUCTS HEREI N TO IMPROVE RELIABILITY, FUNCTIO N OR DESIGN. FAIRCH IL D 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 IT S PATENT RIGHTS, NOR THE RIGHTS OF OTHE RS.

LIFE SUPPORT POL I CY

FAIRCHILD’S PR ODUCTS ARE NOT AUTH ORIZED FOR USE AS C RITICAL COMPONENT S IN LIFE SUPPORT DE VICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
INTERNATIONAL. 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

2. A critical component in any component of a life support
device or sy stem whose fai lure to perform can be
reasonably expec ted to cause the failur e of the life support
device or system, or to affect its safety or effec t iv ene ss .

instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.

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9/25/00 0.0m 001

 2000 Fairchild Semiconductor International

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