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TPS43336-Q1 Datasheet(PDF) 7 Page - Texas Instruments |
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TPS43336-Q1 Datasheet(HTML) 7 Page - Texas Instruments |
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7 / 42 page  TPS43335-Q1 TPS43336-Q1 www.ti.com SLVSAV6B – JUNE 2011 – REVISED JULY 2012 DC 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 High-Side External NMOS Gate Drivers for Buck Controller 5.11 IGX1_peak Gate-driver peak current 0.7 A 5.12 rDS(on) Source and sink driver VVREG = 5.8 V, IGX1 current = 200 mA 4 Ω Low-Side NMOS Gate Drivers for Buck Controller 5.13 IGX2_peak Gate driver peak current 0.7 A 5.14 RDS ON Source and sink driver VREG = 5.8 V, IGX2 current = 200 mA 4 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 7.3 Voz_DIV Voltage on DIV if unconnected Voltage on DIV if unconnected Vreg / 2 V 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 TPS4333-Q1 only 5% 9.0 Internal Gate-Driver Supply Internal regulated supply VIN = 8 V to 18 V, EXTSUP = 0 V, SYNC = high 5.5 5.8 6.1 V 9.1 VREG IVREG = 0 mA to 100 mA, EXTSUP = 0 V, Load regulation 0.2% 1% SYNC = high Internal regulated supply EXTSUP = 8.5 V 7.2 7.5 7.8 V 9.2 VREG(EXTSUP) IEXTSUP = 0 mA to 125 mA, SYNC = High Load regulation 0.2% 1% EXTSUP = 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 EXTSUP ramping positive 9.4 VEXTSUP-Hys EXTSUP switch-over hysteresis 150 250 mV 9.5 IREG-Limit Current limit on VREG EXTSUP = 0 V, normal mode as well as LPM 100 400 mA IREG_EXTSUP- Current limit on VREG when using IVREG = 0 mA to 100 mA, 9.6 125 400 mA Limit EXTSUP EXTSUP = 8.5 V, SYNC = High 10.0 Soft Start 10.1 ISSx Soft-start source current SSA and SSB = 0 V 0.75 1 1.25 µA 11.0 Oscillator (RT) 11.1 VRT Oscillator reference voltage 1.2 V Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Link(s): TPS43335-Q1 TPS43336-Q1 |
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