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TL496CP Datasheet(PDF) 1 Page - Texas Instruments |
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TL496CP Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page TL496C, TL496Y 9-V POWER-SUPPLY CONTROLLERS SLVS012B – AUGUST 1978 – REVISED AUGUST 1995 Copyright © 1995, Texas Instruments Incorporated 4–1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • Internal Step-Up Switching Regulator • Fixed 9-V Output • Charges Battery Source During Transformer-Coupled-Input Operation • Minimum External Components Required (1 Inductor, 1 Capacitor, 1 Diode) • 1- or 2-Cell-Input Operation description The TL496C power-supply control circuit is designed to provide a 9-V regulated supply from a variety of input sources. Operable from a 1- or 2-cell battery input, the TL496C performs as a switching regulator with the addition of a single inductor and filter capacitor. When ac coupled with a step-down transformer, the TL496C operates as a series regulator to maintain the regulated output voltage and, with the addition of a single catch diode, time shares to recharge the input batteries. The design of the TL496C allows minimal supply current drain during standby operation (125 µA typical). With most battery sources, this allows a constant bias to be maintained on the power supply. This makes power instantly available to the system, thus eliminating power-up sequencing problems. AVAILABLE OPTIONS PACKAGED DEVICES CHIP TA SURFACE MOUNT (D) PLASTIC DIP (P) FORM (Y) 0 °C to 70°C TL496CD TL496CP TL496Y functional block diagram Switching Voltage Regulator Control 9-V Series Regulator 2 2C INPUT T INPUT 1C INPUT 3 4 GND GND 5 7 See Note 1 OUTPUT FEEDBACK SW 1 6 8 NOTE 1: Terminals 5 and 7, though connected together internally, must both be terminated to ground to ensure proper circuit operation. 1 2 3 4 8 7 6 5 FEEDBACK 2C INPUT 1C INPUT T INPUT OUTPUT GND SW GND D OR P PACKAGE (TOP VIEW) Terminals 5 and 7 are connected together internally. PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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