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TPS43332QDAPRQ1 Datasheet(PDF) 10 Page - Texas Instruments |
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TPS43332QDAPRQ1 Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 48 page  TPS43330-Q1, TPS43332-Q1 SLVSA82F – MARCH 2011 – REVISED DECEMBER 2014 www.ti.com Electrical Characteristics (continued) VIN = 8 V to 18 V, TJ = –40°C to 150°C (unless otherwise noted) NO. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT LOW-SIDE NMOS GATE DRIVERS FOR BUCK CONTROLLER 5.13 IGX2_peak Gate-driver peak current 1.5 A 5.14 RDS ON Source and sink driver VREG = 5.8 V, IGX2 current = 200 mA 2 Ω ERROR AMPLIFIER (OTA) FOR BUCK CONVERTERS COMPA, COMPB = 0.8 V, 5.15 GmBUCK Transconductance 0.72 1 1.35 mS source/sink = 5 µA, test in feedback loop 5.16 IPULLUP_FBx Pullup current at FBx pins FBx = 0 V 50 100 200 nA 6.0 DIGITAL INPUTS: ENA, ENB, ENC, SYNC 6.1 VIH Higher threshold VIN = 13 V 1.7 V 6.2 VIL Lower threshold VIN = 13 V 0.7 V 6.3 RIH_SYNC Pulldown resistance on SYNC VSYNC = 5 V 500 k Ω 6.4 RIL_ENC Pulldown resistance on ENC VENC = 5 V 500 k Ω Pullup current source on ENA, 6.5 IIL_ENx VENx = 0 V 0.5 2 µA ENB 7.0 BOOST OUTPUT VOLTAGE: DIV 7.1 VIH_DIV Higher threshold VREG = 5.8 V VREG – 0.2 V 7.2 VIL_DIV Lower threshold 0.2 V VREG / 7.3 Voz_DIV Voltage on DIV if unconnected Voltage on DIV if unconnected V 2 8.0 SWITCHING PARAMETER – BUCK DC-DC CONTROLLERS 8.1 fSW_Buck Buck switching frequency RT pin: GND 360 400 440 kHz 8.2 fSW_Buck Buck switching frequency RT pin: 60-k Ω external resistor 360 400 440 kHz Buck adjustable range with 8.3 fSW_adj RT pin: external resistor 150 600 kHz external resistor 8.4 fSYNC Buck synchronization range External clock input 150 600 kHz 8.5 fSS Spread-spectrum spreading TPS43332-Q1 only 5% 9.0 INTERNAL GATE-DRIVER SUPPLY VIN = 8 V to 18 V, VEXTSUP = 0 V, SYNC = Internal regulated supply 5.5 5.8 6.1 V high 9.1 VREG IVREG = 0 mA to 100 mA, VEXTSUP = 0 V, Load regulation 0.2% 1% SYNC = high Internal regulated supply VEXTSUP = 8.5 V 7.2 7.5 7.8 V VREG(EXTSU 9.2 IEXTSUP = 0 mA to 125 mA, SYNC = High P) Load regulation 0.2% 1% VEXTSUP = 8.5 V to 13 V EXTSUP switch-over voltage IVREG = 0 mA to 100 mA, 9.3 VEXTSUP-th 4.4 4.6 4.8 V threshold VEXTSUP ramping positive EXTSUP switch-over 9.4 VEXTSUP-Hys 150 250 mV hysteresis VEXTSUP = 0 V, normal mode as well as 9.5 IVREG-Limit Current limit on VREG 100 400 mA LPM IVREG_EXTSU Current limit on VREG when IVREG = 0 mA to 100 mA, 9.6 125 400 mA P-Limit using EXTSUP VEXTSUP = 8.5 V, SYNC = High 10.0 SOFT START 10.1 ISSx Soft-start source current VSSA and VSSB = 0 V 0.75 1 1.25 µA 11.0 OSCILLATOR (RT) 11.1 VRT Oscillator reference voltage 1.2 V 12.0 POWER GOOD / DELAY 12.1 PGpullup Pullup for A and B to Sx2 50 k Ω 12.2 PGth1 Power-good threshold FBx falling –5% –7% –9% 10 Submit Documentation Feedback Copyright © 2011–2014, Texas Instruments Incorporated Product Folder Links: TPS43330-Q1 TPS43332-Q1 |
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