Motorola MC1723, RC723 Datasheet



SEMICONDUCTOR

TECHNICAL DATA

VOLTAGE REGULATOR

ORDERING INFORMATION

Order this document by MC1723C/D

P SUFFIX

PLASTIC PACKAGE

CASE 646

D SUFFIX

PLASTIC PACKAGE

CASE 751A

(SO–14)

Device

Operating

Temperature

Range

Package

MC1723CD MC1723CP

TA = 0° to +70°C

SO–14

Plastic DIP

Alternate

LM723CN µA723PC

–

1

MOTOROLA ANALOG IC DEVICE DATA

 

The MC1723C is a positive or negative voltage regulator designed to deliver load current to 150 mAdc. Output current capability can be increased to several amperes through use of one or more external pass transistors. MC1723C is specified for operation over the commercial temperature range (0° to +70°C).

• Output Voltage Adjustable from 2.0 Vdc to 37 Vdc

• Output Current to 150 mAdc Without External Pass Transistors

• 0.01% Line and 0.03% Load Regulation

• Adjustable Short Circuit Protection

Figure 1. Representative Schematic Diagram

Figure 2. Typical Circuit Connection

Figure 3. Typical NPN Current Boost Connection

Noninverting

Input

Inverting

Input

V

EE

475

Current Sense

Current Limit

Compensation

V

O

6.2V

V

z

9

1.0k

25k

500

5.0pF

150

20k

300

30k

100

15k

6V

ref

10

13

2

3

V

CC

V

C

1112

15k

1.0k

6.2V

5.0k

V

in

12 11

6

5

C

ref

R3

(7 < VO < 37)

MC1723C

10

2 3

4

C1

100pF

13

7

R

SC

R1

R2

For best results 10 k < R2 < 100 k For minimum drift R3 = R1 | | R2

VO

^

7I

SC

=

R1 + R2

R2

V

sense

0.66 R

SC

V

O

= at TJ = + 25°C

Vin = 20Vdc

RSC = 0.33

VO = +15Vdc IL = 2Adc max

12k

10k

4 C1

13

3

2

1012

11

6 5

7

MC1723C

0.1

µ

F

2N3055 or Equiv

100pF

R

SC

 Motorola, Inc. 1996 Rev 5

MC1723C

2

MOTOROLA ANALOG IC DEVICE DATA

MAXIMUM RATINGS

(TA = +25°C, unless otherwise noted.)

Rating Symbol Value Unit

Pulse Voltage from VCC to VEE (50 ms) V

I(p)

50 V

pk

Continuous Voltage from VCC to V

EE

V

I

40 Vdc

Input–Output Voltage Differential VI–V

O

40 Vdc

Maximum Output Current I

L

150 mAdc

Current from V

ref

I

ref

15 mAdc

Current from V

z

I

z

25 mA

Voltage Between Noninverting Input and V

EE

V

ie

8.0 Vdc

Differential Input Voltage V

id

±5.0 Vdc

Power Dissipation and Thermal Characteristics

TA = +25°C

Derate above TA = +25°C Thermal Resistance, Junction–to–Air

P

D

1/θ

JA

θ

JA

1.25 10

100

W

mW/°C

°C/W

Operating and Storage Junction T emperature Range TJ, T

stg

–65 to +175 °C

Operating Ambient Temperature Range T

A

0 to +70 °C

ELECTRICAL CHARACTERISTICS (T

A

= +25°C, Vin 12 Vdc, VO = 5.0 Vdc, IL = 1.0 mAdc, RSC = 0, C1 = 100 pF, C

ref

= 0 and divider

impedance as seen by the error amplifier ≤ 10 kΩ connected as shown in Figure 2, unless otherwise noted.)

Characteristics

Symbol Min Typ Max Unit

Input Voltage Range V

I

9.5 – 40 Vdc

Output Voltage Range V

O

2.0 – 37 Vdc

Input–Output Voltage Differential VI–V

O

3.0 – 38 Vdc

Reference Voltage V

ref

6.80 7.15 7.50 Vdc

Standby Current Drain ( IL = 0, Vin = 30 V) I

IB

– 2.3 4.0 mAdc

Output Noise Voltage (f = 100 Hz to 10 kHz)

C

ref

= 0

C

ref

= 5.0 µF

V

n

– –

20

2.5

– –

µV(RMS)

Average Temperature Coefficient of Output

Voltage (T

low

< TA < T

high

)

TCV

O

– 0.003 0.015 %/°C

Line Regulation

(TA = 25°C)

12 V < Vin < 15 V 12 V < Vin < 40 V

(T

low

< TA < T

high

)

12 V < Vin < 15 V

Reg

line

– –

–

0.01

0.1

–

0.1

0.5

0.3

% V

O

Load Regulation (1.0 mA < IL < 50 mA)

TA = 25°C T

low

< TA < T

high

Reg

load

– –

0.03 –

0.2

0.6

% V

O

Ripple Rejection (f = 50 Hz to 10 kHz)

C

ref

= 0

C

ref

= 5.0 µF

RR

– –

74 86

– –

dB

Short Circuit Current Limit (RSC = 10 Ω, VO = 0) I

SC

– 65 – mAdc

Long Term Stability ^VO/^t – 0.1 – %/1000 Hr .

NOTE: T

low

to T

high

= 0° to +70°C

MC1723C

3

MOTOROLA ANALOG IC DEVICE DATA

Figure 4. Maximum Load Current as a Function

of Input–Output Voltage Differential

Figure 5. Load Regulation Characteristics

Without Current Limiting

Figure 6. Load Regulation Characteristics

With Current Limiting

Figure 7. Load Regulation Characteristics

With Current Limiting

Figure 8. Current Limiting Characteristics

Figure 9. Current Limiting Characteristics

as a Function of Junction Temperature

Vin–V

out

, INPUT–OUTPUT VOLTAGE (V)

(max), LOAD CURRENT (mA)

L

0 10203040

I

T

A

= + 125°C

IO, OUTPUT CURRENT (mA)

, LOAD REGULATION (%V

load O

0 2040 6080100

)Reg

TA = + 125°C

TA = –55°C

, LOAD REGULATION (%V

load O

)Reg

IO, OUTPUT CURRENT (mA)

0 5.0 10 15 20 25 30

TA = –55°C

, LOAD REGULATION (%V

load O

)Reg

IO, OUTPUT CURRENT (mA)

020406080

T

A

= +125°C

TA = –55°C

IO, OUTPUT CURRENT (mA)

RELATIVE OUTPUT VOLTAGE (V)

0 20406080100

T

A

=+25°C

TA = –55°C

TJ, JUNCTION TEMPERATURE (°C)

CURRENT LIMIT SENSE VOLTAGE (V)

–50 0 50 100 150

40

80

120

160

200

LIMITING CURRENT (mA)

Sense Voltage

Limit Current RSC = 5.0

Ω

Limit Current RSC = 10

Ω

0

40

80

120

160

200

–0.15

–0.1

–0.05

0

0.05

–0.15

–0.1

–0.05

0

0.05

–0.2 –0.4

–0.3

–0.2

–0.1

0

0.1

0

0.2

0.4

0.6

0.8

1.0

1.2

0.4

0.5

0.6

0.7

0.8

T

Jmax

= 150°C

RTH = 150

°

C/W

P

STANDBY

60 mW

(No heatsink)

TA = + 25°C

TA = + 75°C

TA = + 25°C

RSC = 10

Ω

TA = + 25°C

TA = + 125°C

RSC = 10

Ω

TA = +25°C

RSC = 10

Ω

TA = + 125°C