UTC UC723
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R103-006,A
ADJUSTABLE VOLTAGE
REGULATOR
DESCRIPTION
The UTC UC723 is a silicon monolithic integrated circuit,
designed for service as voltage regulator at output voltages,
ranging from 2V to 37V at current up to 150mA. It includes a
temperature-compensated reference amplifier, an error
amplifier, a power series pass transistor, and a current-limiting
circuit.
FEATURES
*Up to 150mA output current
*Adjustable output voltage (from 2V to 37V)
*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%
DIP-14
BLOCK DIAGRAM
UTC UC723
LINEAR INTEGRATED CIRCUIT
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R103-006,A
ABSOLUTE MAXIMUM RATINGS
(Ta=25
C )
PARAMETER
SYMBOL
VALUE
UNIT
Supply Voltage(between V+ and V-)
Vcc
40
V
Pulse Voltage for 50ms
Vpulse
50
V
Differential Input-Output Voltage
Vd
40
V
Different Input Voltage (Between inverting and non-inverting
inputs)
Vid
+-5
V
Different Input Voltage (Between Non-inverting Input and V-)
Vid
8
V
Current from Zener Diode Terminal
Iz
25
mA
Power Dissipation
Pd
900
mW
Operating Temperature
Topr
-55 ~ 125
C
Storage Temperature
Tstr
-65 ~ 150
C
ELECTRICAL CHARACTERISTICS
(Ta=25
C, V+=Vc=Vi=12V, Vo=5V, IL=1mA, C1=100Pf, Cref=0,
Rscp=0, unless otherwise specified, divider impedance R1*R2/(R1+R2) at non-inverting input, terminal 5=10K
)
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Quiescent Regulator Current
ICCQ
IL=0, VI=30V
2.3
3.5
mA
Input Voltage Range
VI
9.5
40
V
Output Voltage Range
VO
2
37
V
Differential Input-Output
Voltage
VI-VO
3
38
V
Reference Voltage
VREF
6.95
7.15
7.35
V
Line Regulation (note 1)
VO
VI=12V to 40V
VI=12V to 15V
VI=12V to 15V, Ta=-55~125
C
0.02
0. 01
0. 2
0.1
%Vo
Load Regulation (note 1)
VO
IL=1mA TO 50mA
IL=1mA TO 50mA,Ta=-55~125
C
0.03
0. 15
0.6
%Vo
Output Voltage Temperature
Coefficient
VO
Ta=-55~125
C
0.002
0.015
%/
C
Ripple Rejection (note 2)
RR
f=50Hz to 10KHz
f=50Hz to 10KHz, Cref=5
F
Tmin<Ttyp<Tmax
74
86
2.5
dB
Short Circuit Limiting Current
ILIM
Rscp=10
, Vo=0
65
mA
Equivalent Noise RMS
output Voltage (note 2)
VN
BW=100Hz to 10KHz, Cref=0
BW=100Hz to 10KHz, Cref=5
F
-20
2.5
V
NOTE 1: Line and load regulation specifications are given for conditions of a constant chip temperature. For
high dissipation condition, temperature drifts must be separately taken in account.
NOTE 2: For Cref, see Fig. 1
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