Motorola MC1723, RC723 Datasheet

Voltage Regulator

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

Order this document by MC1723C/D

MC1723C

VOLTAGE REGULATOR

SEMICONDUCTOR

TECHNICAL DATA

Figure 1. Representative Schematic Diagram

P SUFFIX

VCC

V

PLASTIC PACKAGE

CASE 646

C

12

11

500

25k

1.0k

1.0k

6.2V

Vz

9

D SUFFIX

6.2V

15k

PLASTIC PACKAGE

CASE 751A

15k

10

(SO±14)

VO

100

13

Compensation

5.0pF

6.2V

2 Current

30k

ORDERING INFORMATION

5.0k

300

150

Limit

Operating

20k

Current

Temperature

6

Vref

5

7

VEE

4

3

Sense

Device

Alternate

Range

Package

Noninverting

Inverting

MC1723CD

±

SO±14

Input

Input

MC1723CP

LM723CN

TA = 0

°

°

Plastic DIP

to +70 C

μA723PC

Figure 2. Typical Circuit Connection

12

(7 < VO < 37)

10

RSC

Figure 3. Typical NPN Current Boost Connection

Vin

VO

11

2

RSC = 0.33

= +15Vdc

3

VO

MC1723C

2N3055 or Equiv

IL = 2Adc max

6

12

10

R1

Vin = 20Vdc

R3

4

11

2

5

C1

100pF

MC1723C

3

Cref

13

R2

0.1μF

4

12k

7

6

5

C1

100pF

R1 + R2

Vsense

0.66

7

13

10k

V

^ 7

I

SC

=

=

at T

J

= + 25°C

O

R2

RSC

RSC

For best results 10 k < R2 < 100 k

For minimum drift R3 = R1 | | R2

Motorola, Inc. 1996

Rev 5

	MC1723C
MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.)
Rating	Symbol	Value	Unit
Pulse Voltage from VCC to VEE (50 ms)	VI(p)	50	Vpk
Continuous Voltage from VCC to VEE	VI	40	Vdc
Input±Output Voltage Differential	VI±VO	40	Vdc
Maximum Output Current	IL	150	mAdc
Current from Vref	Iref	15	mAdc
Current from Vz	Iz	25	mA
Voltage Between Noninverting Input and VEE	Vie	8.0	Vdc
Differential Input Voltage	Vid	±5.0	Vdc
Power Dissipation and Thermal Characteristics
TA = +25°C	PD	1.25	W
Derate above TA = +25°C	1/θJA	10	mW/°C
Thermal Resistance, Junction±to±Air	θJA	100	°C/W
Operating and Storage Junction Temperature Range	TJ, Tstg	±65 to +175	°C
Operating Ambient Temperature Range	TA	0 to +70	°C

ELECTRICAL CHARACTERISTICS (TA = +25°C, Vin 12 Vdc, VO = 5.0 Vdc, IL = 1.0 mAdc, RSC = 0, C1 = 100 pF, Cref = 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			VI	9.5	±	40	Vdc
Output Voltage Range			VO	2.0	±	37	Vdc
Input±Output Voltage Differential			VI±VO	3.0	±	38	Vdc
Reference Voltage			Vref	6.80	7.15	7.50	Vdc
Standby Current Drain ( IL = 0, Vin = 30 V)			IIB	±	2.3	4.0	mAdc
Output Noise Voltage (f = 100 Hz to 10 kHz)			Vn				μV(RMS)
Cref = 0				±	20	±
Cref = 5.0 μF				±	2.5	±
Average Temperature Coefficient of Output			TCVO	±	0.003	0.015	%/°C
Voltage (Tlow < TA < Thigh)
Line Regulation		12 V < Vin < 15 V	Regline	±	0.01	0.1	% VO
(TA = 25°C)
		12 V < Vin < 40 V		±	0.1	0.5
(Tlow < TA < Thigh)				±	±	0.3
12 V < Vin < 15 V
Load Regulation (1.0 mA < IL < 50 mA)			Regload				% VO
TA = 25°C				±	0.03	0.2
Tlow < TA < Thigh				±	±	0.6
Ripple Rejection (f = 50 Hz to 10 kHz)			RR				dB
Cref = 0				±	74	±
Cref = 5.0 μF				±	86	±
Short Circuit Current Limit (RSC = 10 Ω, VO = 0)			ISC	±	65	±	mAdc
Long Term Stability			^VO/^t	±	0.1	±	%/1000 Hr.

NOTE: Tlow to Thigh = 0° to +70°C

2	MOTOROLA ANALOG IC DEVICE DATA

MC1723C

Figure 4. Maximum Load Current as a Function of Input±Output Voltage Differential

	200
(mA)				TJmax = 150°C
	160			RTH = 150°C/W
CURRENT				PSTANDBY 60 mW
				(No heatsink)
	120
		TA = + 25°C
LOAD
	80
(max),
		TA = + 75°C
L	40
I
	0	TA = + 125°C
		10	20	30	40
	0

Vin±Vout, INPUT±OUTPUT VOLTAGE (V)

Figure 6. Load Regulation Characteristics

With Current Limiting

	0.05
)
O
(%V	0
REGULATION	±0.05					TA = ±55°C
						TA = + 25°C
, LOAD	±0.1
						TA = + 125°C
load	±0.15	RSC = 10 Ω
Reg
	±0.2	5.0	10	15	20	25	30
	0

IO, OUTPUT CURRENT (mA)

Figure 5. Load Regulation Characteristics

Without Current Limiting

)

0.05

O

(%V

±0.05

REGULATION

0

T

A = + 25°C

, LOAD

TA

= ±55°C

TA = + 125°C

load

±0.1

Reg

±0.15

0

20

40

60

80

100

IO, OUTPUT CURRENT (mA)

Figure 7. Load Regulation Characteristics

With Current Limiting

	0.1
)
O
(%V	0
REGULATION
	±0.1
				TA = ±55°C
, LOAD	±0.2
		RSC = 10 Ω	TA = + 25°C
load	±0.3
Reg			TA = + 125°C
	±0.4
	0	20	40	60	80
			IO, OUTPUT CURRENT (mA)

RELATIVE OUTPUT VOLTAGE (V)

Figure 8. Current Limiting Characteristics

1.2

RSC = 10 Ω

1.0

0.8

0.6

0.4TA = + 125°C

TA=+25°C

0.2
						TA = ±55°C
0
		20	40	60	80	100
0

IO, OUTPUT CURRENT (mA)

CURRENT LIMIT SENSE VOLTAGE (V)

0.8

0.7

0.6

0.5

0.4

Figure 9. Current Limiting Characteristics as a Function of Junction Temperature

										200	(mA)
										160
					Sense	Voltage
											CURRENT
	Limit		Current RSC = 5.0 Ω							120
											LIMITING
										80
			Limit Current RSC = 10			Ω				40
±50		0		50			100		150
		TJ, JUNCTION TEMPERATURE (°C)

MOTOROLA ANALOG IC DEVICE DATA	3