www.fairchildsemi.com KA7511 SMPS Controller Features Description • • • • The KA7511 drives, regulates and monitors the main switching element in a SMPS based on the nonsynchronous flyback theory. Because of the wide regulating range and the high voltage stability during large load changes, the power supplies for TV receivers and video recorders can be realized. Wide Operating Range Under Voltage Lockout Direct Switching TR Drive Low Start-Up Current 10-SIP H/S 1 Internal Block Diagram Rev. 5.0 ©2000 Fairchild Semiconductor International KA7511 Absolute Maximum Ratings (TA=25°°C) Parameter Symbol Value Unit Supply Voltage VCC 20 V Reference Output Voltage VREF 6 V Zero Passage Identification Voltage V2 ± 0.6 V Control Amplifier Voltage V3 3 V Collector Current Simulation Voltage V4 8 V Blocking Input Voltage V5 8 V Base Current Cut-Off Point Voltage V7 V9 V Base Current Amplifier Output Voltage V8 V9 V Collector Current Simulation Current I4 5 mA Blocking Input Current I5 5 mA Base Current Cut-Off Point Current I7 1.5 A Base Current Amplifier Output Current I8 -1.5 A Operating Temperature Range TA 0 ~ +70 °C Electrical Characteristics (TA = 25°C, unless otherwise specified) Parameter Supply Voltage Symbol Conditions Min. Typ. Max. Unit VCC - - 15 18 V - - 0.5 mA Start Operation Supply Current (1) ICC1 V9 = 2V (2) ICC2 V9 = 5V - 1.5 2.0 mA (3) ICC3 V9 = 10V - 2.4 3.2 mA 11.0 11.8 12.3 V Switch On V1 2 V9 - KA7511 Electrical Characteristics (TA = +25°C, unless otherwise specified) Parameter Symbol Conditions Min. Typ. Max. Unit Normal Operation (VCC = 10V, V(CTRL) = -10V, V(CLK) = ± 0.5V, f = 20KHz, D = 0.5) Supply Current (4) ICC4 V(CTRL) = -10V 110 135 160 mA (5) ICC5 V(CTRL) = 0V 50 75 100 mA Reference Voltage(1) VREF1 I1 ≤ 0.1mA 4.0 4.2 4.5 V (2) VREF2 I1 = 5mA 4.0 4.2 4.4 V - 0.1 - % Temperature Coefficient Of VREF ∆VREF/∆T - Control Voltage V3 V(CTRL) = 0V 2.3 2.6 2.9 V Collector Current Simulation Voltage V4 V(CTRL) = 0V 1.8 2.2 2.5 V ∆V4 V(CTRL) = 0 ~ -10V 0.3 0.4 0.5 V Clamping Voltage V5 - 6 7 8 V Output Voltage V7 V(CTRL) = 0V 2.7 3.3 4.0 V V8 V(CTRL) = 0V 2.7 3.4 4.0 V ∆V8 V(CTRL) = 0 ~ -10V 1.6 2.0 2.4 V V2 - - 0.2 - V Feedback Voltage Protective Operation (VCC = 10V, V(CTRL) = -10V, V(CLK) = ± 0.5V, f = 20KHz, D = 0.5) ICC6 V5 ≤ 1.9V 14 22 28 mA Switch-Off Voltage (1) V7(OFF) V5 ≤ 1.9V 1.3 1.5 1.8 V (2) V4(OFF) V5 ≤ 1.9V 1.8 2.1 2.5 V Supply Current (6) V5(B) V(CTRL) = 0V V1/2- 0.1 V1/2 - V V8 Off Voltage V9(OFF) V(CTRL) = 0V 6.7 7.4 7.8 V V1 Off Voltage ∆V9(OFF) V(CTRL) = 0V 0.3 0.6 1 V Blocking Input Voltage Note : * After Switch-On Figure 1. Test Circuit 3 KA7511 Figure 2. VREF VS IREF (TA=25°°C) Figure 3. ICC VS VREF (TA=25°°C) 4 1.65 ±0.10 0.065 ±0.004 0.50 ±0.10 0.020 ±0.004 7.00 ±0.30 0.276 ±0.012 16.80 MAX 0.661 3.80 ±0.20 0.150 ±0.008 1.30 ( ) 0.051 2.54 0.100 23.86 ±0.20 0.939 ±0.008 0.50 ±0.10 0.020 ±0.004 1.30 ±0.10 0.051 ±0.004 26.05 MAX 1.026 25.75 ±0.10 1.013 ±0.004 ( 1.50 ) 0.059 KA7511 Mechanical Dimensions Package Dimensions in millimeters 10-SIP H/S 3.25 ±0.20 0.128 ±0.008 #1 #10 1.00 ±0.20 0.039 ±0.008 8.90 ±0.20 0.350 ±0.008 13.65 ±0.30 0.537 ±0.012 5 KA7511 Ordering Information 6 Product Number Package Operating Temperature KA7511 10-SIP H/S 0 ~ +70°C KA7511 7 KA7511 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. 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. www.fairchildsemi.com 9/25/00 0.0m 001 Stock#DSxxxxxxxx 2000 Fairchild Semiconductor International