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CRCW08052431F Datasheet(PDF) 9 Page - Texas Instruments |
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CRCW08052431F Datasheet(HTML) 9 Page - Texas Instruments |
9 / 12 page SM74202 C5 0.01 PF SS R6 12.4k GND GND C8 100 pF RT/ SYNC 10 9 3 U1 GND 6 FB 2 CS 8 100 R7 C11 1000 pF R8 0.47 R9 0.47 GND GND GND OUT 5 UVLO 7 VIN 1 VCC 4 C10 4.7 PF C4 0.1 PF GND GND R1 10 R4 1.00k R2 61.9k C2 2.2 PF GND C1 2.2 PF GND Shutdown C3 0.01 PF GND R3 2.87k GND V+ 1 J1 30-75V IN Q1 Si7898DP GND D1 CMPD2838E Z1 1SMB5936B GND T1 D3 MBRD835L D2 CMPD2838E 20 R13 GND C12 470 pF 10, 1W R10 GND R12 1.47k R11 2.43k 0.1 PF C9 GND OUT RTN 1 2 GND GND 2 J2 +3.3V C13 100 PF GND C14 100 PF GND C15 270 PF GND COMP SYNC Input R5 15.0k C7 3300 pF C6 220 pF SM74202 www.ti.com SNOSBA4A – NOVEMBER 2011 – REVISED APRIL 2013 Thermal Protection Internal thermal shutdown circuitry is provided to protect the integrated circuit in the event the maximum junction temperature is exceeded. This feature prevents catastrophic failures from accidental device overheating. When activated, typically at 165 degrees Celsius, the controller is forced into a low power standby state, disabling the output driver and the bias regulator. After the temperature is reduced (typical hysteresis = 25°C) the VCC regulator is enabled and a softstart sequence initiated. Typical Application Circuit: 36V - 75 VIN and 3.3V, 4.5A OUT Bill Of Materials ITEM PART NUMBER DESCRIPTION VALUE C 1 C4532X7R2A225M CAPACITOR, CER, TDK 2.2µF, 100V C 2 C4532X7R2A225M CAPACITOR, CER, TDK 2.2µF, 100V C 3 C2012X7R1H103K CAPACITOR, CER, TDK 0.01µF, 50V C 4 C3216X7R2A104K CAPACITOR, CER, TDK 0.1µF, 100V C 5 C2012X7R1H103K CAPACITOR, CER, TDK 0.01µF, 50V C 6 C2012C0G1H221J CAPACITOR, CER, KEMET 220pF, 50V C 7 C2012C0G1H332J CAPACITOR, CER, TDK 3300pF, 50V C 8 C2012C0G1H101J CAPACITOR, CER, TDK 100pF, 50V C 9 C2012X7R1H104K CAPACITOR, CER, TDK 0.1µF, 50V C 10 C3216X7R1C475K CAPACITOR, CER, TDK 4.7µF, 16V C 11 C2012C0G1H102J CAPACITOR, CER, TDK 1000pF, 50V C 12 C2012C0G1H471J CAPACITOR, CER, TDK 470p, 50V C 13 C4532X7S0G107M CAPACITOR, CER, TDK 100µF, 4V C 14 C4532X7S0G107M CAPACITOR, CER, TDK 100µF, 4V C 15 A700X277M0004AT CAPACITOR, ALUM ORGANIC, KEMET 270µF, 4V D 1 CMPD2838E-NSA DIODE, SIGNAL, CENTRAL Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: SM74202 |
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