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TPS62231 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS62231 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 32 page 1 2 3 6 5 4 MODE SW VIN FB EN GND DRY PACKAGE (TOP VIEW) GateDriver Anti Shoot-Through Current LimitComparator SW Softstart Bandgap Undervoltage Lockout Limit HighSide Limit LowSide FB EN MODE VIN GND Min.On Time Min.OFF Time VIN EN Integrated FeedBack Network VREF FB Error Comparator Zero/Negative CurrentLimitComparator Control Logic PMOS NMOS MODE Thermal Shutdown VREF 0.70V TPS62230, TPS62231, TPS62232, TPS62233, TPS62234 TPS62235, TPS62236, TPS62237, TPS62238, TPS62239 TPS622310, TPS622311, TPS622312, TPS622313, TPS622314 www.ti.com SLVS941C – APRIL 2009 – REVISED APRIL 2010 PIN FUNCTIONS PIN I/O DESCRIPTION NAME NO VIN 3 PWR VIN power supply pin. GND 4 PWR GND supply pin EN 5 IN This is the enable pin of the device. Pulling this pin to low forces the device into shutdown mode. Pulling this pin to high enables the device. This pin must be terminated. SW 2 OUT This is the switch pin and is connected to the internal MOSFET switches. Connect the inductor to this terminal FB 6 IN Feedback Pin for the internal regulation loop. Connect this pin directly to the output capacitor. MODE 1 IN MODE pin = high forces the device to operate in PWM mode. Mode = low enables the Power Save Mode with automatic transition from PFM (Pulse frequency mode) to PWM (pulse width modulation) mode. FUNCTIONAL BLOCK DIAGRAM Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 5 |
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