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TPS4333x-Q1 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS4333x-Q1 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 48 page  1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 VBAT DS GC1 GC2 CBA GA1 PHA GA2 PGNDA SA1 SA2 FBA COMPA SSA PGA ENA ENB COMPC ENC SYNC DLYAB RT AGND PGB SSB COMPB FBB SB2 SB1 PGNDB GB2 PHB GB1 CBB VREG DIV EXTSUP VIN TPS43330-Q1, TPS43332-Q1 www.ti.com SLVSA82F – MARCH 2011 – REVISED DECEMBER 2014 6 Device Comparison Table PART NUMBER OPTION TPS43330-Q1 Frequency-hopping spread spectrum OFF TPS43332-Q1 Frequency-hopping spread spectrum ON 7 Pin Configuration and Functions DAP Package 38-Pin HTSSOP With PowerPAD Top View Pin Functions PIN I/O DESCRIPTION NAME NO. AGND 23 O Analog ground reference A capacitor on this pin acts as the voltage supply for the high-side N-channel MOSFET gate-drive circuitry in buck CBA 5 I controller BuckA. When the buck is in a dropout condition, the device automatically reduces the duty cycle of the high-side MOSFET to approximately 95% on every fourth cycle to allow the capacitor to recharge. A capacitor on this pin acts as the voltage supply for the high-side N-channel MOSFET gate-drive circuitry in buck CBB 34 I controller BuckB. When the buck is in a dropout condition, the device automatically reduces the duty cycle of the high-side MOSFET to approximately 95% on every fourth cycle to allow the capacitor to recharge. Error amplifier output of BuckA and compensation node for voltage-loop stability. The voltage at this node sets the COMPA 13 O target for the peak current through the inductor of BuckA. Clamping this voltage on the upper and lower ends provides current-limit protection for the external MOSFETs. Error amplifier output of BuckB and compensation node for voltage-loop stability. The voltage at this node sets the COMPB 26 O target for the peak current through the inductor of BuckB. Clamping this voltage on the upper and lower ends provides current-limit protection for the external MOSFETs. COMPC 18 O Error-amplifier output and loop-compensation node of the boost regulator Copyright © 2011–2014, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS43330-Q1 TPS43332-Q1 |
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