Order this document by MC1723C/D
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
• • •
VOLTAGE REGULATOR SEMICONDUCTOR TECHNICAL DATA
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 VCC 12 500
VC 11
1.0k
1.0k
25k
P SUFFIX PLASTIC PACKAGE CASE 646
Vz
6.2V
9
D SUFFIX PLASTIC PACKAGE CASE 751A (SO–14)
6.2V 15k 15k
10 VO
100
13 Compensation
5.0pF 30k
6.2V 300
5.0k
150
20k 6
5
Vref
2 Current Limit
7
4 Inverting Input
VEE
Noninverting Input
ORDERING INFORMATION
Current 3 Sense
Device
Alternate
MC1723CD
–
MC1723CP
LM723CN µA723PC
Operating Temperature Range
Package
TA = 0° to +70°C
Plastic DIP
SO–14
Figure 2. Typical Circuit Connection (7 < VO < 37) 12
10
11
2
RSC
Vin
Figure 3. Typical NPN Current Boost Connection
VO
RSC = 0.33
3 6
MC1723C
R3
R1
4 5 Cref
C1
Vin = 20Vdc
12
10
11
2 3
100pF
13
MC1723C R2
7
0.1µF
^7
Vsense RSC For best results 10 k < R2 < 100 k For minimum drift R3 = R1 | | R2 R1 + R2 R2
ISC =
C1 13
=
0.66 at TJ = + 25°C RSC
100pF 10k
7
Motorola, Inc. 1996
MOTOROLA ANALOG IC DEVICE DATA
12k
4
6 5
VO
VO = +15Vdc IL = 2Adc max
2N3055 or Equiv
Rev 5
1
MC1723C MAXIMUM RATINGS (TA = +25°C, unless otherwise noted.) Rating Pulse Voltage from VCC to VEE (50 ms) Continuous Voltage from VCC to VEE Input–Output Voltage Differential Maximum Output Current Current from Vref Current from Vz
Symbol
Value
Unit
VI(p)
50
Vpk
VI
40
Vdc
VI–VO
40
Vdc
IL
150
mAdc
Iref
15
mAdc
Iz
25
mA
Voltage Between Noninverting Input and VEE
Vie
8.0
Vdc
Differential Input Voltage
Vid
±5.0
Vdc
PD 1/θJA θJA
1.25 10 100
W mW/°C °C/W
TJ, Tstg
–65 to +175
°C
TA
0 to +70
°C
Power Dissipation and Thermal Characteristics TA = +25°C Derate above TA = +25°C Thermal Resistance, Junction–to–Air Operating and Storage Junction Temperature Range Operating Ambient Temperature Range
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.) Symbol
Min
Typ
Max
Unit
Input Voltage Range
VI
9.5
–
40
Vdc
Output Voltage Range
VO
2.0
–
37
Vdc
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) Cref = 0 Cref = 5.0 µF
Vn – –
20 2.5
– –
Average Temperature Coefficient of Output Voltage (Tlow < TA < Thigh)
TCVO
–
0.003
0.015
Line Regulation
Regline – –
0.01 0.1
0.1 0.5
–
–
0.3
– –
0.03 –
0.2 0.6
– –
74 86
– –
Characteristics
Input–Output Voltage Differential
12 V < Vin < 15 V 12 V < Vin < 40 V (Tlow < TA < Thigh) 12 V < Vin < 15 V (TA = 25°C)
Load Regulation (1.0 mA < IL < 50 mA) TA = 25°C Tlow < TA < Thigh
µV(RMS)
%/°C % VO
Regload
% VO
Ripple Rejection (f = 50 Hz to 10 kHz) Cref = 0 Cref = 5.0 µF
RR
Short Circuit Current Limit (RSC = 10 Ω, VO = 0)
ISC
–
65
–
mAdc
^VO/^t
–
0.1
–
%/1000 Hr.
Long Term Stability
dB
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
Figure 5. Load Regulation Characteristics Without Current Limiting 0.05
TJmax = 150°C RTH = 150°C/W PSTANDBY 60 mW (No heatsink)
160
Reg load , LOAD REGULATION (%VO )
120 TA = + 25°C 80 TA = + 75°C
40 0
TA = + 125°C 0
10 20 30 Vin–Vout, INPUT–OUTPUT VOLTAGE (V)
0 TA = + 25°C
–0.05
TA = –55°C –0.1
TA = + 125°C
–0.15
40
0
20
Figure 6. Load Regulation Characteristics With Current Limiting Reg load , LOAD REGULATION (%VO )
Reg load , LOAD REGULATION (%VO )
TA = –55°C –0.05 TA = + 25°C –0.1 TA = + 125°C
RSC = 10 Ω
–0.15
0
5.0
10 15 20 IO, OUTPUT CURRENT (mA)
25
0 –0.1
RSC = 10 Ω
30
TA = + 125°C 0
0.8 0.6 TA = + 125°C TA=+25°C 0.2 TA = –55°C 20
40 60 IO, OUTPUT CURRENT (mA)
MOTOROLA ANALOG IC DEVICE DATA
80
40 60 IO, OUTPUT CURRENT (mA)
80
200
0.8
1.0
0
20
Figure 9. Current Limiting Characteristics as a Function of Junction Temperature
RSC = 10 Ω
0.4
TA = + 25°C
–0.3 –0.4
100
CURRENT LIMIT SENSE VOLTAGE (V)
1.2
TA = –55°C
–0.2
Figure 8. Current Limiting Characteristics
RELATIVE OUTPUT VOLTAGE (V)
100
0.1
0
0
80
Figure 7. Load Regulation Characteristics With Current Limiting
0.05
–0.2
40 60 IO, OUTPUT CURRENT (mA)
0.7
0.6
Sense Voltage
Limit Current RSC = 5.0 Ω
160
120
80
0.5
LIMITING CURRENT (mA)
I L (max), LOAD CURRENT (mA)
200
Limit Current RSC = 10 Ω 0.4 –50
0 50 100 TJ, JUNCTION TEMPERATURE (°C)
40 150
3
MC1723C Figure 10. Line Regulation as a Function of Input–Output Voltage Differential
Figure 11. Load Regulation as a Function of Input–Output Voltage Differential 0.1
∆Vin = +3 V
Reg load , LOAD REGULATION (%VO )
0.1
0
–0.1 5.0
15 25 Vin–Vout, INPUT–OUTPUT VOLTAGE (V)
IL = 1.0 to IL = 50 mA
0
–0.1
–0.2
35
0
Figure 12. Standby Current Drain as a Function of Input Voltage
10 20 30 40 Vin–Vout, INPUT–OUTPUT VOLTAGE (V)
Figure 13. Line Transient Response
4.0
STANDBY CURRENT (mA)
OUTPUT VOLTAGE DEVIATION (mV)
4.0 VO = Vref IL = 0
TA = –55°C
3.0
2.0 TA = +25°C 1.0 TA = +125°C 0
10
20 30 Vin, INPUT VOLTAGE (V)
40
Input Voltage 2.0
2.0
0
–2.0 –5.0
Output Voltage –4.0
10
20 t, TIME (µs)
30
40
45
Z O , OUTPUT IMPEDANCE ( Ω )
0
LOAD DEVIATION (mA)
OUTPUT VOLTAGE DEVIATION (mV)
2.0
0
10
20 t, TIME (µs)
30
40
45
10
IL = 40 mA 0
–8.0 –5.0
0
Figure 15. Output Impedance as Function of Frequency 10
Load Current
0 Output Voltage
Figure 14. Load Transient Response
4
50
INPUT VOLTAGE DEVIATION (V)
Reg in , LINE REGULATION (%VO )
0.2
IL = 50 mA CI = 0 1.0 CI = 1.0 µF
0.1
0.01 100
1.0 k
10 k
100 k
1M
f, FREQUENCY (Hz)
MOTOROLA ANALOG IC DEVICE DATA
MC1723C Figure 16. Typical Connection for 2 < VO < 7 10
12 +Vin
RSC
12 11
MC1723C
R1 R3
4
10k
6
5
MC1723C
5
13
^7
^
Vsense ISC = RSC
R2 R1 + R2
10
6
1.0M
2 3
10
2.0k
6
MC1723C
3 4
+ 100µF
5
–
13
7
Figure 21. –15 V Negative Regulator
0.33
10
11
2
10
12
2N3055 or Equiv 12
11
6
5
100pF 13
12k
+ Sense Vout
+ Vref
+15V 10k
–
10µF
–
– V2 = 14V
Vin = –20 V
10k
13 7
Load – Sense
+ Vref
5
7
MOTOROLA ANALOG IC DEVICE DATA
+
MC1723C 100pF
MC1723C 4
12k
4
3 6
1000pF
7
Figure 20. +15 V, 1.0 A Regulator with Remote Sense
0.1µF
2
11
5.1k
5.1k
+5.0V
12
+5V
5
+20V
0.33
0.1µF Vin2 +10V
10
4
1.0k
Vin
Vout
Vout
MC1723C
0.1µF
Vsense RSC = (1– ) I a SC
Vin1 +6.5V
1N4001 or Equiv
12
Iknee –1 ISC
Figure 19. +5.0 V, 1.0 A High Efficiency Regulator
1mH
11 100
Vsense a RA = 10 kΩ where a = 1–a VO
Iknee IL
2N4918 or Equiv
Vin +10V
7
ISC
Figure 18. +5.0 V, 1.0 A Switching Regulator
R2
3
0.66 RSC at TJ = + 25°C
For best results 10 k < R1 +R2 < 100 k For minimum drift R3 = R1 R2
2.2k
100pF
1000pF
7
Vout VO
4
13
R2
Cref
Vout
RA
2
3
6
R1
RSC
10
+ Vin
Vout
2
11
Figure 17. Foldback Connection
Vout = –15 V 2N3055 or Equiv
5
MC1723C Figure 22. +12V, 1.0 A Regulator (Using PNP Current Boost)
+18V
2N3791 or Equiv
Vin
Vout = +12 V
0.33 11 10
100 12
2 MC1723C
6
3 4
5
13
10k 100pF 12k
7
6
MOTOROLA ANALOG IC DEVICE DATA
MC1723C OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 646–06 ISSUE L 14
NOTES: 1. LEADS WITHIN 0.13 (0.005) RADIUS OF TRUE POSITION AT SEATING PLANE AT MAXIMUM MATERIAL CONDITION. 2. DIMENSION L TO CENTER OF LEADS WHEN FORMED PARALLEL. 3. DIMENSION B DOES NOT INCLUDE MOLD FLASH. 4. ROUNDED CORNERS OPTIONAL.
8
B 1
7
A F
DIM A B C D F G H J K L M N
L C J
N H
G
D
SEATING PLANE
K M D SUFFIX PLASTIC PACKAGE CASE 751A–03 (SO–14) ISSUE F
–A– 14
8
–B– 1
0.25 (0.010)
G
M
F
–T– D 14 PL 0.25 (0.010)
M
K M
T B
S
MOTOROLA ANALOG IC DEVICE DATA
M
R X 45 _
C
SEATING PLANE
B
A
S
MILLIMETERS MIN MAX 18.16 19.56 6.10 6.60 3.69 4.69 0.38 0.53 1.02 1.78 2.54 BSC 1.32 2.41 0.20 0.38 2.92 3.43 7.62 BSC 0_ 10_ 0.39 1.01
NOTES: 1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M, 1982. 2. CONTROLLING DIMENSION: MILLIMETER. 3. DIMENSIONS A AND B DO NOT INCLUDE MOLD PROTRUSION. 4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE. 5. DIMENSION D DOES NOT INCLUDE DAMBAR PROTRUSION. ALLOWABLE DAMBAR PROTRUSION SHALL BE 0.127 (0.005) TOTAL IN EXCESS OF THE D DIMENSION AT MAXIMUM MATERIAL CONDITION.
P 7 PL
7
INCHES MIN MAX 0.715 0.770 0.240 0.260 0.145 0.185 0.015 0.021 0.040 0.070 0.100 BSC 0.052 0.095 0.008 0.015 0.115 0.135 0.300 BSC 0_ 10_ 0.015 0.039
J
DIM A B C D F G J K M P R
MILLIMETERS MIN MAX 8.55 8.75 3.80 4.00 1.35 1.75 0.35 0.49 0.40 1.25 1.27 BSC 0.19 0.25 0.10 0.25 0_ 7_ 5.80 6.20 0.25 0.50
INCHES MIN MAX 0.337 0.344 0.150 0.157 0.054 0.068 0.014 0.019 0.016 0.049 0.050 BSC 0.008 0.009 0.004 0.009 0_ 7_ 0.228 0.244 0.010 0.019
7
MC1723C
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MFAX:
[email protected] – TOUCHTONE 602–244–6609 INTERNET: http://Design–NET.com
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
8
◊
*MC1723C/D*
MOTOROLA ANALOG IC DEVICE DATA MC1723C/D
