Harris Semiconductor CA723T, CA723E, CA723CT, CA723CE Datasheet

April 1994

SEMICONDUCTOR

Voltage Regulators Adjustable from 2V to 37V at Output

Currents Up to 150mA Without External Pass Transistors

CA723, CA723C

Features

• Up to 150mA Output Current

• Positive and Negative Voltage Regulation

• Regulation in Excess of 10A with Suitable Pass Transistors

• Input and Output Short-Circuit Protection

• Load and Line Regulation. . . . . . . . . . . . . . . . . . .0.03%

• Direct Replacement for 723 and 723C Industry Types

• Adjustable Output Voltage . . . . . . . . . . . . . . . 2V to 37V

Applications

• Series and Shunt Voltage Regulator

• Floating Regulator

• Switching Voltage Regulator

• High-Current Voltage Regulator

• Temperature Controller

Ordering Information

PART TEMPERATURE PACKAGE

CA723E -55oC to +125oC 14Lead Plastic DIP CA723T -55oC to +125oC 10 Pin Metal Can CA723CE 0oC to +70oC 14 Lead Plastic DIP CA723CT 0oC to +70oC 10 Pin Metal Can

Pinouts

CA723 (PDIP)

TOP VIEW

Functional Block Diagram

Description

The CA723 and CA723C are silicon monolithic integrated circuits designed for service as voltage regulators at output voltages ranging from 2V to 37V at currents up to 150mA.

Each type includes a temperature-compensated reference ampliﬁer, an error ampliﬁer, a power series pass transistor, and a current-limiting circuit. They also provide independently accessible inputs for adjustable current limiting and remote shutdown and, in addition, feature low standby current drain, low temperature drift, and high ripple rejection.

The CA723 and CA723C may be used with positive and negative power supplies in a wide variety of series, shunt, switching, and ﬂoating regulator applications. They can provide regulation at load currents greater than 150mA and in excess of 10A with the use of suitable n-p-n or p-n-p external pass transistors.

The CA723 and CA723C are supplied in the 10 lead TO-100 metal can(T sufﬁx), and the 14 lead dual-in-line plastic package (E sufﬁx), and are direct replacements for industry types LM723, LM723C in packages with similar terminal arrangements.

CURRENT

LIMIT

CURRENT

SENSE

INV

INPUT

NON-INV

INPUT

REF

V-

ERROR AMP

VOLT

REF

CA723C (CAN)

FREQ

COMP V+ UNREG

INPUT

V+

UNREGULATED

TEMPERATURECOMPENSATED ZENER

VOLT

REF AMP

REF

NON-INVERTING

INPUT

INVERTING

INPUT

V-

CURRENT

TOP VIEW

CURRENT LIMIT

CURRENT

SENSE

INV

INPUT

NON-INV

INPUT

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper I.C. Handling Procedures. Copyright

ERROR AMP

REF

VOLT

REF

TAB

V-, (CASE INTERNALLY CONNECTED TO TERM 5)

FREQ COMP

V+ UNREG INPUT

7-3

COMPENSATION

ERROR AMP +

LIMIT

FREQUENCY

CURRENT SENSE

CURRENT

LIMITER

SERIES PASS TRANSISTOR

REGULATED

OUTPUT

File Number 788.3

Speciﬁcations CA723, CA723C

Absolute Maximum Ratings Operating Conditions

DC Supply Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V

(Between V+ and V- Terminals)

Pulse Voltage for 50ms

Pulse Width (Between V+ and V- Terminals) . . . . . . . . . . . . . 50V

Differential Input-Output Voltage . . . . . . . . . . . . . . . . . . . . . . . . 40V

Differential Input Voltage

Between Inverting and Noninverting Inputs. . . . . . . . . . . . . . . . ±5V

Between Noninverting Input and V- . . . . . . . . . . . . . . . . . . . . . 8V

Current From Zener Diode Terminal (VZ). . . . . . . . . . . . . . . . .25mA

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this speciﬁcation is not implied.

Thermal Resistance θ

Plastic DIP Package . . . . . . . . . . . . . . . . 120oC/W -

Metal Can . . . . . . . . . . . . . . . . . . . . . . . . 136oC/W 65oC/W

Device Dissipation

CA723T, CA723CT, Up to TA = +25oC. . . . . . . . . . . . . . . . 900mW

CA723E, CA723CE, Up to TA = +25oC . . . . . . . . . . . . . .1000mW

CA723T, CA723CT, Above TA = +25oC. . . . . . . . . . . . .7.4mW/oC

CA723E, CA723CE, Above TA = +25oC . . . . . . . . . . . . 8.3mW/oC

Ambient Temperature Range

Operating Temperature Range . . . . . . . . . . . . . .-55oC to +125oC

Storage Temperature Range. . . . . . . . . . . . . . . .-65oC to +150oC

Lead Temperature, During Soldering . . . . . . . . . . . . . . . . . . +265oC

At a distance 1/16” ± 1/32” (1.59mm ±0.79mm) from case for 10s max

DC Electrical Speciﬁcations T

= +25oC, V+ = VC = VI = 12V, V- = 0, VO = 5V, IL = 1mA, C1 = 100pF, C

REF

= 0, R

SCP

= 0, Unless Otherwise Speciﬁed. Divider impedance R1 R2÷ R1 + R2 at noninverting input, T erminal 5 = 10kΩ. (Figure 20)

CA723 CA723C

PARAMETERS TEST CONDITION

UNITSMIN TYP MAX MIN TYP MAX

DC CHARACTERISTICS Quiescent Regulator Current, I Input Voltage Range, V Output Voltage Range, V

Differential Input-Output Voltage, V Reference Voltage, V

REF

Line Regulation (Note 1) V

IL = 0, VI = 30V - 2.3 3.5 - 2.3 4 mA

9.5 - 40 9.5 - 40 V 2 - 37 2 - 37 V

- V

3 - 38 3 - 38 V

6.95 7.15 7.35 6.8 7.15 7.5 V

= 12V to 40V - 0.02 0.2 - 0.1 0.5 % V

VI = 12V to 15V - 0.01 0.1 - 0.01 0.1 % V VI = 12V to 15V,

- - 0.3 - - - % V

TA = -55oC to +125oC VI = 12V to 15V,

-----0.3% V

TA = 0oC to +70oC

Load Regulation (Note 1) IL = 1mA to 50mA - 0.03 0.15 - 0.03 0.2 % V

IL = 1mA to 50mA,

- - 0.6 - - - % V

TA = -55oC to +125oC IL = 1mA to 50mA,

-----0.6% V

TA = 0oC to +70oC

Output-Voltage Temperature Coefficient, ∆V

TA = -55oC to +125oC - 0.002 0.015 - - - %/oC

= 0oC to +70oC ----0.003 0.015 %/oC

Ripple Rejection (Note 2) f = 50Hz to 10kHz - 74 - - 74 - dB

-86- -86-dB

- -20 - - 20 - µV

- 2.5 - - 2.5 - µV

Short Circuit Limiting Current, I

LIM

Equivalent Noise RMS Output Voltage,

(Note 2)

f = 50Hz to 10kHz,

= 5µF

REF

= 10Ω, VO = 0 - 65 - - 65 - mA

SCP

BW = 100Hz to 10kHz, C

= 0

REF

BW = 100Hz to 10kHz,

= 5µF

REF

NOTES:

1. Line and load regulation speciﬁcations are given for condition of a constant chip temperature. For high dissipation condition, temperature drifts must be separately taken into account.

2. For C

(See Figure 20)

REF

O O O

O O

7-4

CA723, CA723C

V+

UNREGULATED

INPUT

6.2V

15kΩ

R1 500Ω

R3 25kΩ

C1 5pF

30kΩ

R6 100Ω

6.2V

R8 5kΩ

REF

FIGURE 1. EQUIVALENT SCHEMATIC DIAGRAM OF THE CA723 AND CA723C

Typical Performance Curves (CA723)

150

100

MAX JUNCTION TEMP (TJ) = +150oC THERMAL RESISTANCE = 150 QUIESCENT DISSIPATION (PQ) = 60mW (NO HEAT SINK)

AMBIENT TEMPERATURE (TA) = +25oC

C/W

1kΩ

Q10

300Ω

R10 20kΩ

NON-INVERTING

INPUT

)

1kΩ

Q12

Q11

Q13

R11 150Ω

V-

OUTPUT VOLTAGE (VO) = 5V

INPUT VOLTAGE (VI) = 12V

SHORT CIRCUIT PROTECTION

0.05

-0.05

RESISTANCE (R

Q16

INVERTING

INPUT

Q14

Q15

R12

15kΩ

) = 0

SCP

AMBIENT TEMPERATURE

FREQUENCY COMPENSATION

CURRENT LIMIT

CURRENT SENSE

) = +25oC

-55oC

+125oC

MAXIMUM LOAD CURRENT (mA)

010203040

DIFFERENTIAL INPUT - OUTPUT VOLTAGE (V)

+125oC

FIGURE 2. MAX LOAD CURRENT vs DIFFERENTIAL INPUT-

OUTPUT VOLTAGE

0.05

)

-0.05

-0.1 AMBIENT TEMP (TA) = +25oC

-0.15

LOAD REGULATION (V

-0.2

-0.25 0 5 10 15 20 25 30

OUTPUT CURRENT (mA)

OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (V SHORT CIRCUIT PROTECTION

RESISTANCE (R

-55oC

+125oC

) = 12V

SCP

) = 10Ω

-0.1

LOAD REGULATION (V

-0.15

-0.2 0 20 40 60 80 100

OUTPUT CURRENT (mA)

FIGURE 3. LOAD REGULATION WITHOUT CURRENT LIMIT-

ING

OUTPUT VOLTAGE (VO) = 5V INPUT VOLTAGE (VI) = 12V SHORT CIRCUIT PROTECTION

0.1

)

LOAD REGULATION (V

RESISTANCE (R

AMBIENT TEMPERATURE (TA) = -55oC

-0.1

0.2

-0.3

-0.4 0 20 40 60 80 100

) = 0

SCP

+25oC

+125oC

OUTPUT CURRENT (mA)

FIGURE 4. LOAD REGULATION WITH CURRENT LIMITING FIGURE 5. LOAD REGULATION WITH CURRENT LIMITING

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