MA723 datasheet(6/6 Pages) PHILIPS

Part #	MA723

Description	Precision voltage regulator

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Manufacturer	PHILIPS [NXP Semiconductors]

Direct Link	http://www.nxp.com

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Philips Semiconductors

Product specification

µA723/723C

Precision voltage regulator

1994 Aug 31

6

TYPICAL APPLICATIONS (Continued)

I

KNEE +

V

OUT

R

3

R

SC

R

4

)

V

SENSE

(R

3 )

R

4

)

R

SC

R

4

V

OUT +

V

REF

X

R

1 )

R

2

R

4

I

SHORT CKT +

V

SENSE

R

SC

X

R

3 )

R

4

R

4

R

4

R

3

+

V

OUT

I

SC

V

SENSE

(I

KNEE

– I

SHORT CKT

)

– 1

R

SC +

V

SENSE

I

SC

1

)

R

3

R

4

NOTES:

NOTE:

V

OUT +

V

REF

x

R

2

R

1 )

R

2

V

OUT +

V

REF

x

R

2

R

1 )

R

2

; R

3 +

R

4

R

3 +

R

1

R

2

R

1 )

R

2

for minimum temperature drift

NOTE:

R3 may be eliminated for minimum component count

Remote Shutdown Regulator With Current

Limiting (VOUT = 2 to 7V)

High Voltage Regulator (VOUT = 7 to 37V)

Foldback Current Limiting Regulator (VOUT = 2 to 7V)

R2

R4

COMP

V–

1nF

C1

R1

RSC

VC

V+

VIN

VREF VOUT

CL

CS

INV

N.I.

Q1

R3

2k

Ω

2k

Ω

LOGIC INPUT

REGULATED

OUTPUT

VREF VOUT

CL

CS

INV

N.I.

V–

V+

VIN

VC

R3

COMP

REGULATED

OUTPUT

R2

R1

100pF

C1

RSC

R2

COMP

V–

R1

VC

VIN

VREF

VOUT

CL

CS

INV

N.I.

RSC

REGULATED

OUTPUT

1nF

C1

R4

R3

VZ

16

0

OUTPUT CURRENT — mA

R3 = 500Ω

RSC = 3.4Ω

R4 = 3.6kΩ

14

12

10

8

6

4

2

0

ISHORT

10

20

30

40

50

60

IKNEE

SL00508

Figure 6. Typical Applications (cont.)

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