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TPS65170 Datasheet(PDF) 5 Page - Texas Instruments |
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TPS65170 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 33 page TPS65170 www.ti.com SLVSA27 – OCTOBER 2009 PIN FUNCTIONS PIN I/O DESCRIPTION NAME NO. VL 1 O Connection for decoupling capacitor for internal bias supply. SWB 2, 3 O Buck converter switch node CTRLN 4 O Base drive signal for the positive charge pump external regulating transistor. FBN 5 I Feedback pin for the negative charge pump. Connect this pin to the center of a resistor divider connected between the negative charge pump output and buck converter output. FBB 6 I Buck converter feedback. Connect this pin to the output of the buck converter. /RST 7 O Reset generator open drain output AGND 8 P Analog ground NC 9, 10, 11, N/A Not used, connect to AGND. 12, 13 AGND 14 P Analog ground. DLY 15 I Positive charge pump and boost converter delay capacitor connection. CRST 16 I Reset generator timing capacitor connection. SS 17 I Soft-start timing capacitor connection. COMP 18 I Boost converter compensation network connection. FB 19 I Boost regulator feedback. Connect this pin to the center of a resistor divider connected between the boost converter output and AGND. FBP 20 I Feedback pin for the positive charge pump. Connect this pin to the center of a resistor divider connected between the positive charge pump output and AGND. CTRLP 21 O Base drive signal for the positive charge pump external regulating transistor GD 22 O Gate drive signal for the external MOSFET isolation switch. SW 23, 24 O Boost converter switching node PGND 25, 26 P Power ground VIN 27, 28 P Supply voltage connection Exposed P Connect to the system GND Thermal Die Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s) :TPS65170 |
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