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% DIP-14 BLOCK DIAGRAM 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 Vcc 40 V V Supply Voltage(between V+ and V-) Pulse Voltage for 50ms Vpulse 50 Differential Input-Output Voltage Vd 40 V Different Input Voltage (Between inverting and non-inverting Vid +-5 V inputs) Different Input Voltage (Between Non-inverting Input and V-) Current from Zener Diode Terminal Power Dissipation Vid 8 V Iz 25 mA 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 Quiescent Regulator Current ICCQ IL=0, VI=30V MIN TYP MAX UNIT 2.3 3.5 mA Input Voltage Range VI 9.5 40 V Output Voltage Range VO 2 37 V VI-VO 3 38 V Differential Input-Output Voltage Reference Voltage VREF Line Regulation (note 1) ∆VO 7.15 7.35 V VI=12V to 40V 6.95 0.02 0. 2 %Vo VI=12V to 15V 0. 01 0.1 0.03 0. 15 VI=12V to 15V, Ta=-55~125°C Load Regulation (note 1) ∆VO IL=1mA TO 50mA IL=1mA TO 50mA,Ta=-55~125°C Output Voltage Temperature ∆VO %Vo 0.6 Ta=-55~125°C 0.002 0.015 %/°C Coefficient Ripple Rejection (note 2) RR f=50Hz to 10KHz 74 f=50Hz to 10KHz, Cref=5µF 86 Tmin<Ttyp<Tmax 2.5 dB Short Circuit Limiting Current ILIM Rscp=10Ω, Vo=0 65 mA Equivalent Noise RMS VN BW=100Hz to 10KHz, Cref=0 -20 µV BW=100Hz to 10KHz, Cref=5µF 2.5 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 UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R103-006,A UTC UC723 LINEAR INTEGRATED CIRCUIT APPLICATION CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R103-006,A UTC UC723 LINEAR INTEGRATED CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R103-006,A