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TPS79801-Q1 Datasheet(PDF) 9 Page - Texas Instruments |
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TPS79801-Q1 Datasheet(HTML) 9 Page - Texas Instruments |
9 / 25 page Thermal Shutdown Current Limit Bandgap GND OUT SENSE IN EN Internal Supply IN OUT FB GND EN TPS79801 Load V IN R P RETURN OFF -48V FB OUT IN EN TPS79801 GND 1 F m 1 F m R SET ON TPS79801-Q1, TPS79850-Q1 www.ti.com SLVS822E – MARCH 2009 – REVISED SEPTEMBER 2015 7 Detailed Description 7.1 Overview The TPS798xx-Q1 is a 50-mA high-voltage LDO regulator with micropower quiescent current and shutdown. The device is capable of supplying 50 mA at a dropout voltage of 300 mV (typical). The low operating quiescent current (40 μA) drops to 1 μA in shutdown. In addition to the low quiescent current, the TPS798xx-Q1 incorporates several protection features that make it ideal for battery-powered applications. The device is protected against both reverse-input and reverse-output voltages. In battery-backup applications, where the output can be held up by a backup battery when the input is pulled to ground, the TPS798xx-Q1 acts as if it has a diode in series with its output and prevents reverse current flow. Figure 14 and Figure 15 illustrate two typical applications. ILED = 1.275 V/RSET –48 V can vary from –4 V to –50 V Figure 14. Constant Brightness for Indicator LED Over Wide Input Voltage Range Figure 15. Kelvin Sense Connection 7.2 Functional Block Diagram Figure 16. Fixed Voltage Output Version Copyright © 2009–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS79801-Q1 TPS79850-Q1 |
Similar Part No. - TPS79801-Q1_15 |
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Similar Description - TPS79801-Q1_15 |
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