UTC UTCUC723 Datasheet

UTC UC723 LINEAR INTEGRATED CIRCUIT

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%

BLOCK DIAGRAM

DIP-14

UTC UNISONIC TECHNOLOGIES CO., LTD. 1

QW-R103-006,A

UTC UC723 LINEAR INTEGRATED CIRCUIT

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)
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=10KΩ)

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
Reference Voltage VREF 6.95 7.15 7.35 V
Line Regulation (note 1) ∆VO VI=12V to 40V

Load Regulation (note 1) ∆VO IL=1mA TO 50mA

Output Voltage Temperature
Coefficient
Ripple Rejection (note 2) RR f=50Hz to 10KHz

Short Circuit Limiting Current ILIM Rscp=10Ω, Vo=0 65 mA
Equivalent Noise RMS
output Voltage (note 2)

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

VI-VO 3 38 V

VI=12V to 15V

VI=12V to 15V, Ta=-55~125°C

IL=1mA TO 50mA,Ta=-55~125°C

∆VO Ta=-55~125°C 0.002 0.015 %/°C

f=50Hz to 10KHz, Cref=5µF

Tmin<Ttyp<Tmax

VN BW=100Hz to 10KHz, Cref=0

BW=100Hz to 10KHz, Cref=5µF

Vid +-5 V

0.02

0. 2

0. 01

0.1

0.03 0. 15

0.6

74
86

2.5

-20

2.5

%Vo

%Vo

dB

µV

UTC UNISONIC TECHNOLOGIES CO., LTD. 2

QW-R103-006,A