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| www.fairchildsemi.com KA7632/KA7633 Fixed Multi-output Regulator Features * Output Currents up to 0.5A (output1 & 2) * Output Current up to 1A with External Transistor (output3) * Fixed Precision Output 1 voltage 3.3V 2% * Fixed Precision Output 2 voltage 8V 2% (KA7632) * Fixed Precision Output 2 voltage 9V 2% (KA7633) * Control Signal Generator for Output 3 voltage (5.1V 2%) * Reset Facility for Output Voltage1 * Output 2,3 with Disable by TTL Input * Current Limit Protection at Each Output * Thermal Shut Down Description The KA7632/KA7633 is a multi-output positive voltage regulator designed to provide fixed precision output voltages of 3.3V, 8V (KA7632) / 9V (KA7633) at current up to 0.5A and 5.1V at current up to 1A with external PNP transistor. An internal reset circuit generates a reset pulse when the output 1 decrease below the regulated value. Output2 & 3 can be disabled by TTL input. Protection features include over voltage protection, short circuit protection and thermal shutdown. 10-SIP H/S Internal Block Diagram Vin1 1 10uA 3 Cd 100nF RESET Vsys 6 + SW Thermal Shut Down Bandgap Reference Vin2 2 OVP Vin1 2.5V DEL.CAP + SCP 9 Output 1 + 50mV OVP Vin2 10K A614 "Y" Control 10 Output3 7 + SCP + + Output 2,3 1.4V SCP 8 Output 2 5 GND 4 Disable Rev. 1.0.1 (c)2001 Fairchild Semiconductor Corporation KA7632/KA7633 Absolute Maximum Ratings Parameter DC Input Voltage Disable Input Voltage Output Current Power Dissipation Junction Temperature Operating Temperature Symbol Vin Vc Io Pd Tj Topr Value 20 20 0.5 1.5 +150 0~+125 Unit V V A W C C Remark No Heatsink - Electrical Characteristics(KA7632) (Refer to test circuit Vin1=6V ,Vin2=10.5V ,Tj = +25 C, unless otherwise specified) Parameter Output Voltage 1 Symbol Vo1 Conditions Io1=10mA 6V Vo2 Vd1,2 Vo 1,2 Vo 1,2 Vo3 Vo3 Vo3 Trd VrL IrH STt Isc1,2 VdisH VdisL Idis Ttsd Iq Vr Vrth V V mV mV V mV mV ms V A ppm/C A V V A C mA V mA Notes: 1. To check the reset circuit ,the reset output is low to discharge the delay capacitor(=Cd). if it's less than Vo1-0.25V. And the reset output is high when the delay capacitor voltage linearly increased by the interal current source(10A) if it's more than Vo1- 0.2V. The equations of delay time is same as below. Trd = (Cd x 2.5) / 10A 2. These parameters, although guaranteed, are not 100% tested in production. 2 KA7632/KA7633 Electrical Characteristics(KA7633) (Refer to test circuit Vin1=6V ,Vin2=11.5V ,Tj = +25 C, unless otherwise specified) Parameter Output Voltage 1 Symbol Vo1 Conditions Io1=10mA 6V Vo2 Vd1,2 Vo 1,2 Vo 1,2 Vo3 Vo3 Vo3 Trd VrL IrH STt Isc1,2 VdisH VdisL Idis Ttsd Iq Vr Vrth V V mV mV V mV mV ms V A ppm/C A V V A C mA V mA Notes: 1. To check the reset circuit ,the reset output is low to discharge the delay capacitor(=Cd). if it's less than Vo1-0.25V. And the reset output is high when the delay capacitor voltage linearly increased by the interal current source(10A) if it's more than Vo1- 0.2V. The equations of delay time is same as below. Trd = (Cd x 2.5) / 10A 2. These parameters, although guaranteed, are not 100% tested in production. 3 KA7632/KA7633 Typical Perfomance Characteristics 2.0 Quiescent current Iq( mA) TJ = 25oC Io1 =10mA 7 6 1.6 Output voltage1 Vo(V) 5 4 3 2 1 1.2 0.8 0.4 0 TJ = 25oC Io1 =10mA 6 7.5V 0 5 10 15 20 0 Input voltage Vin (V) Input Voltage Vin (V) Input Voltage Vin (V) Figure 1. Quiescent Current vs. Input Voltage Figure 2. Output Voltage1 vs. Input Voltage 14 14 Output voltage2 Vo(V) Output voltage Vo(V) 12 10 8 6 4 2 0 0 5 10 15 20 12 10 8 6 4 2 0 TJ = 25oC 2 Io1 =10mA 2 10.5V 0.5 1 1.5 2 2.5 3 Disable Voltage(V) Figure 3. Output Voltage2 vs. Input Voltage Figure 4. Output Voltage vs. Disable Voltage High(Low) 40 5.105 5.10 Disable Bias Current( uA) 30 Output voltage1 Vo(V) 5.095 5.09 5.085 5.08 5.075 20 10 0 0 0.4 0.8 1.2 1.6 2.0 5.07 -25 0 25 50 75 100 125 Disable Voltage(V) Temperature Tj() Figure 5. Disable Bias Current vs. Disable Voltage Figure 6. Output Voltage1 vs. Temperature(Tj) 4 KA7632/KA7633 Typical Perfomance Characteristics (continued) 8.07 8.06 8.05 8.04 8.03 8.02 8.01 8.00 -25 0 25 50 75 100 125 150 Temperature Tj() Figure 7. Output Voltage2 vs. Temperature(Tj) 5 KA7632/KA7633 Mechanical Dimensions Package Dimensions in millimeters 10-SIP H/S 3.25 0.20 0.128 0.008 #1 1.50 ) 0.059 0.50 0.10 0.020 0.004 ( 25.75 0.10 1.013 0.004 26.05 MAX 1.026 #10 1.30 ( ) 0.051 2.54 0.100 1.30 0.10 0.051 0.004 1.00 0.20 0.039 0.008 7.00 0.30 0.276 0.012 8.90 0.20 0.350 0.008 13.65 0.30 0.537 0.012 16.80 MAX 0.661 0.50 0.10 0.020 0.004 6 1.65 0.10 0.065 0.004 3.80 0.20 0.150 0.008 23.86 0.20 0.939 0.008 KA7632/KA7633 Ordering Information Product Number KA7632 KA7633 Package 10-SIP H/S Operating Temperature 0C to +125C 7 KA7632/KA7633 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 8/1/01 0.0m 001 Stock#DSxxxxxxxx 2001 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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