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TC35C25COE Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc |
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TC35C25COE Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc |
1 / 7 page 4-111 TELCOM SEMICONDUCTOR, INC. 7 6 5 4 3 1 2 8 11 A VDD 14 B OSC OUT 4 15 CMPTR +6V 50 µA ERROR AMP SYNC 3 CT 5 DISCH 7 COMP 9 IN– 1 IN+ 2 SOFT START 8 SHUTDOWN 10 GND 12 RT 6 V+ IN REFERENCE REGULATOR FLIP FLOP UNDER VOLTAGE OSC S R R +6V 35C25 PWM LATCH 16 VREF 13 +4V REF TC25/35C25-2 10/1/96 FUNCTIONAL BLOCK DIAGRAM TC25C25 TC35C25 BICMOS PWM CONTROLLERS GENERAL DESCRIPTION The TC35C25 family of PWM controllers are CMOS implementations of the industry standard 3525 voltage mode SMPS ICs. These second generation CMOS devices employ TelCom Semiconductors' Tough BiCMOS ™ process for latch-up proof operation. They offer much lower power consumption than any of their previous CMOS or bipolar counterparts. These controllers have separate supply pins for the control and output sections of the circuit. This allows "boot- strap" operation. The CMOS output stage allows the output voltage to swing to within 25mV of either rail. Other improved features include tighter hysteresis and undervoltage start-up specifications over temperature, and very low input bias current on all inputs. FEATURES s Low Power BICMOS Construction s Low Supply Current at 20 kHz ............... 1.0mA Typ s Latch-Up Immunity ................. >500mA on Outputs s Below Rail Input Protection .............................. – 5V s High Output Drive ................................ 500mA Peak s Fast Rise/Fall Time ..................... 50nsec @ 1000pF s High Frequency Operation .................. Up to 1MHz s Tri-state Sync Pin for Easy Parallel Operation s Under Voltage Hysteresis Guaranteed s Shutdown Pin Available s Double-Ended s Soft Start, With Small Cap s Low Prop Delay Shutdown to Output ................................................. 140nsec Typ. ORDERING INFORMATION Part No. Configuration Pkg./Temperature TC25C25EOE Non-Inverting 16-Pin SOIC (Wide) – 40 °C to +85°C TC25C25EPE Non-Inverting 16-Pin Plastic DIP (Narrow) – 40 °C to +85°C TC35C25COE Non-Inverting 16-Pin SOIC (Wide) 0 °C to +70°C TC35C25CPE Non-Inverting 16-Pin Plastic DIP (Narrow) 0 °C to +70°C |
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