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 Supply Voltage(between V+ and V-) Pulse Voltage for 50ms Vpulse 50 V 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) Load Regulation (note 1) Output Voltage Temperature ∆VO ∆VO ∆VO 7.15 7.35 V VI=12V to 40V 6.95 0.02 0. 2 %Vo VI=12V to 15V VI=12V to 15V, Ta=-55~125°C 0. 01 0.1 IL=1mA TO 50mA IL=1mA TO 50mA,Ta=-55~125°C 0.03 0. 15 Ta=-55~125°C 0.002 %Vo 0.6 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 assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R103-006,A