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| www.fairchildsemi.com KA723 Precision Voltage Regulator Features * * * * Positive or Negative Supply Operation 0.01% line and load regulation Output voltage adjustable from 2V to 37 V Output current to 150mA without external pass transistor Description The KA723 are monolithic integrated Circuit voltage regulators featuring high ripple rejection, excellent output and load regulation, excellent temperature stability, and low standby current. The KA723 are also useful in a wide range of other applications such as a shunt regulator, a current regulator or a temperature controller. 14-DIP 1 14-SOP 1 Internal Block Diagram INVERT INPUT 4 FREQUENCY COMPENS 12 11 +Vcc 12 TEMP. COMPENS ZENER Vo REF AMP ERROR AMP SERIES PASS TRANSISTOR Vo VREF 6 -Vcc 7 5 NON INVERT INPUT 5 3 9 Vz CURRENT CURRENT LIMIT SENSE Rev. 5.0 (c)2000 Fairchild Semiconductor International KA723 Absolute Maximum Ratings Parameter Pulse Voltage from V+ to V- (50ms) Continuous Voltage from V+ to VInput-Output Voltage Differential Maximum Output Current Differential Input Voltage Voltage Between Non-Inverting Input and VCurrent from VZ Current from VREF Power Dissipation Operating Temperature Range Storage Temperature Range Symbol VI(P) VI V I - VO IO VID VIE IZ IREF PD TOPR TSTG Value 50 40 40 150 5 8 25 15 1000 0 ~ +70 -65 ~ + 150 Unit VPEAK V V mA V V mA mA mV C C Electrical Characteristics (Unless otherwise specified, TA = 25C, VIN =V+= VC = 12V, V-=O,VOUT = 5V, IL =1mA, RSC = 0, CI = 100pF, CREF=0 and divider impedance as seen by error amplifier 10K connected as shown in figure 1) Parameter Line Regulation Symbol VO Conditions VI = 12V to 15V VI = 12V to 40V TMIN TATMAX VI = 12V to 15V IO = 1mA to 50mA Load Regulation VO dB VO/T ISC VREF VN ST ID VI VO VD TMIN TTMAX IO = 1 to 50mA f = 100Hz to 10KHz,CREF =0 f = 100Hz to 10KHz,CREF =5F TMIN TTMAX RSC = 10, VO = 0 f = 100Hz to 10KHz, CREF = 0 f = 100Hz to 10KHz, CREF=5F IL = 0, VI = 30V Min 6.80 9.5 2.0 3.0 Typ. 0.01 0.1 0.03 74 86 Max. 0.1 0.5 0.3 0.2 0.6 % Unit % Ripple Rejection Average Temperature Coefficient of Output Voltage Short Circuit Current Limit Reference Voltage Output Noise Voltage Long-term Stability Standby Current Drain Input Voltage Range Output Voltage Range Input-Output Voltage Differential dB %/C mA V Vms %/ 1000HR mA V V V 0.003 0.015 65 7.15 20 2.5 0.1 2.0 7.50 4.0 40 37 38 Notes: 1.Line and load regulation specifications are given for the condition of constant chip temperature. 2.Temperature drifts must be taken into account separately for hith dissipation conditions. 2 KA723 Typical Application Figure 1. Basic Low Voltage Regulator (VOUT = 2 to 7Volts) R1R2 Note: R3 = --------------------R1 + R2 for minimum temperature drift Typical Performance Regulated Output Voltage 5V Line regulation ( VIN = 3V ) 0.5mV Load Regulation ( VL = 50V ) 1.5mV 3 KA723 Mechanical Dimensions Package Dimensions in millimeters 14-DIP 6.40 0.20 0.252 0.008 2.08 ) 0.082 #14 ( #1 19.80 MAX 0.780 19.40 0.20 0.764 0.008 #7 #8 7.62 0.300 3.25 0.20 0.128 0.008 0.20 0.008 MIN 5.08 MAX 0.200 3.30 0.30 0.130 0.012 0.25 -0.05 0~15 +0.10 0.010 -0.002 +0.004 4 2.54 0.100 0.46 0.10 0.018 0.004 1.50 0.10 0.059 0.004 KA723 Mechanical Dimensions (Continued) Package Dimensions in millimeters 14-SOP MIN 1.55 0.10 0.061 0.004 0.05 0.002 0.47 ) 0.019 MAX0.10 MAX0.004 1.27 0.050 +0.10 0.406 -0.05 +0.004 0.016 -0.002 ( #1 #14 8.70 MAX 0.343 #7 6.00 0.30 0.236 0.012 #8 1.80 MAX 0.071 +0.10 0.20 -0.05 +0.004 0.008 -0.002 3.95 0.20 0.156 0.008 0.60 0.20 0.024 0.008 5.72 0.225 0~ 8 8.56 0.20 0.337 0.008 5 KA723 Ordering Information Product Number KA723 KA723D Package 14-DIP 14-SOP Operating Temperature 0 ~ +70C 6 KA723 7 KA723 DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD'S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR INTERNATIONAL. As used herein: 1. Life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body, or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. www.fairchildsemi.com 9/25/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International 2. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. |
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