ua78s40 ETC-unknow, ua78s40 Datasheet
ua78s40
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ua78s40 Summary of contents
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Universal Switching Regulator Subsystem The A78S40 is a switching regulator subsystem, consisting of a temperature compensated voltage reference, controlled–duty cycle oscillator with an active current limit circuit, comparator, high–current and high–voltage output switch, capable of 1.5 A and 40 V, ...
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MAXIMUM RATINGS Rating Power Supply Voltage Op Amp Power Supply Voltage Common Mode Input Range (Comparator and Op Amp) Differential Input Voltage (Note 2) Output Short Circuit Duration (Op Amp) Reference Output Current Voltage from Switch Collectors to Gnd Voltage ...
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ELECTRICAL CHARACTERISTICS ( (Op Amp) 5 low to T high , unless otherwise noted.) Characteristic OSCILLATOR Charging Current ( 5 ...
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Figure 1. Output Switch On/Off Time versus Oscillator Timing Capacitor 1000 5 pk(sense Pin 10 = Gnd Pin ref 100 1.0 0.1 1 ...
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V in 25V + 100 9 10 1.25V Reference 3. 12V + 100 9 10 1.25V Reference 47k R1 22k MOTOROLA ANALOG IC DEVICE DATA A78S40 Figure 5. Step–Down Converter ...
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V in 15V + 100 Oscilator – Comp. + 1.25V Reference 1.5k R2 18k Calculation Step–Down off V in(min) – V sat – V out ( ...
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0.25 (0.010) MOTOROLA ANALOG IC DEVICE DATA A78S40 OUTLINE DIMENSIONS P SUFFIX PLASTIC PACKAGE CASE 648–08 ISSUE SEATING –T– PLANE ...
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... JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center, 3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park, 51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298 *uA78S40/D* MOTOROLA ANALOG IC DEVICE DATA A78S40/D ...