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| www.fairchildsemi.com KA34063A SMPS Controller Features * * * * Operation From 3.0 to 40V Input Short Circuit Current Limiting Low Stand-by Current Output Switch Current of 1.5A Without External Transistors * Output Voltage Adjustable * Frequency of Operation From 100Hz to 100kHz * Step-up, Step-Down or Inverting Switching Regulators Description The KA34063A is a monolithic regulator sub system intended for use as DC to DC converter. This device contains a temperature compensated bandgap reference, a duty cycle control oscillator, a driver, and a high current output switch. It can be used for step down, step up or inverting switching regulators as well as for series pass regulators. 8-DIP 1 8-SOP 1 Internal Block Diagram DRIVE COLLECTOR SWITCH COLLECTOR 8 1.25V REF VTG COMP S Q COMPARATOR INVERTING INPUT Q2 1 5 Q1 4 IPK SENSE GND TIMING CAPACITOR 7 OSCILLATOR R RD 3 2 * VCC(6) Rev. 1.0.1 (c)2002 Fairchild Semiconductor Corporation KA34063A Absolute Maximum Ratings Parameter Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage Switch Collector To Emitter Voltage Driver Collector Voltage Switch Current Storage Temperature Range Symbol VCC VI(COMP) VC(SW) VE(SW) VCE(SW) VC(DR) ISW TSTG Value 40 -0.3 ~ +40 40 40 40 40 1.5 -65 ~ +150 Unit V V V V V V A C Electrical Characteristics (VCC = 5.0V, TA = 0C to +70C , unless otherwise specified) Parameter OSCILLATOR Charging Current Discharging Current Oscillator Amplitude Discharge to Charge Current Ratio Current Limit Sense Voltage OUTPUT SWITCH Saturation Voltage 1 (Note1) Saturation Voltage 2 (Note1,2) DC Current Gain (Note1,2) Collector off State Current (Note1) COMPARATOR Threshold Voltage Threshold Voltage Line Regulation Input Bias Current TOTAL DEVICE Supply Current ICC VCC = 5 to 40V, CT = 0.001uF V7 = VCC, V5>VTH pin2 = GND 2.7 4.0 mA VTH VTH IBIAS VI = 0V VCC = 3 to 40V 1.21 1.24 2.0 50 1.29 5.0 400 V mV nA VCE(SAT)1 VCE(SAT)2 GI(DC) IC(OFF) ISW = 1.0A VC(driver) = VC(SW) ISW = 1.0A, VC(driver) = 50mA ISW = 1.0A, VCE = 5.0V, TA = 25C VCE = 40V, TA = 25C 50 0.95 0.45 180 0.01 1.3 0.7 100 V V A ICHG IDISCHG V(OSC) K VSENSE(C.L) VCC = 5 to 40V, TA = 25C VCC = 5 to 40V, TA = 25C TA = 25C V7 = VCC, TA = 25C ICHG = IDISCHG TA = 25C 5.2 250 22 140 31 190 0.5 6.1 300 42 260 7.5 350 A A V mV Symbol Conditions Min. Typ. Max. Unit Note : 1. Output switch tests are performed under pulsed conditions to minimize power dissipation. 2. These parameters, although guaranteed, are not 100% tested in production. 2 KA34063A Typical Performance Characteristics Temperature (C) Figure 1. Temperature Drift (VTH) 3 KA34063A Mechanical Dimensions Package Dimensions in millimeters 8-DIP 0.018 0.004 1.524 0.10 0.060 0.004 0.46 0.10 6.40 0.20 0.252 0.008 #1 #8 #4 #5 9.20 0.20 0.362 0.008 9.60 MAX 0.378 ( 0.79 ) 0.031 5.08 MAX 0.200 7.62 0.300 3.40 0.20 0.134 0.008 3.30 0.30 0.130 0.012 0.33 MIN 0.013 0.25 -0.05 +0.10 0~15 0.010 -0.002 +0.004 4 2.54 0.100 KA34063A Mechanical Dimensions (Continued) Package Dimensions in millimeters 8-SOP MIN 1.55 0.20 0.061 0.008 0.1~0.25 0.004~0.001 #1 #8 4.92 0.20 0.194 0.008 5.13 MAX 0.202 ( #4 #5 6.00 0.30 0.236 0.012 +0.10 0.15 -0.05 +0.004 0.006 -0.002 0.56 ) 0.022 1.80 MAX 0.071 MAX0.10 MAX0.004 3.95 0.20 0.156 0.008 5.72 0.225 0.50 0.20 0.020 0.008 0~ 8 1.27 0.050 0.41 0.10 0.016 0.004 5 KA34063A Ordering Information Product Number KA34063A KA34063AD Package 8-DIP 8-SOP Operating Temperature 0 ~ +70C 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 CORPORATION. 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 9/10/02 0.0m 001 Stock#DSxxxxxxxx 2002 Fairchild Semiconductor Corporation 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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