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TPS65311QRVJRQ1 Fiches technique(PDF) 6 Page - Texas Instruments |
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TPS65311QRVJRQ1 Fiches technique(HTML) 6 Page - Texas Instruments |
6 / 49 page TPS65311-Q1 SLVSCA6A – OCTOBER 2013 – REVISED OCTOBER 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) VIN = VINPROT 4.8 V to 40 V, VSUPx = 3 V to 5.5 V, EXTSUP = 0 V, TJ(max) = 125°C, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SYNCHRONOUS BUCK CONVERTER BUCK2/3 VSUP2/3 Supply voltage 3 11 V Iload = 0…2 A VBUCK2/3 Regulated output voltage range 0.8 5.5 V VSUPx = VBUCK2/3 + Iload × 0.2 Ω RDSON-HS RDSON high-side switch VBOOTx –PHx = 5.8 V 0.20 Ω RDSON-LS RDSON low-side switch VREG = 5.8 V 0.20 Ω IHS-Limit High-side switch current limit Static current limit test. 2.5 2.9 3.3 In application L > 1 µH at A ILS-Limit Low-side switch current limit 2 2.5 3 IHS-Limit and ILS-Limit to limit dI / dt VSUP = 10 V for high side, controller disabled, VSUPLkg VSUP leakage current 1 2 µA TJ = 100°C fSWLBuck2/3 Buck switching frequency fOSC / 2 VSense2/3 Feedback voltage With respect to the 800-mV internal reference –1% 1% High-side minimum on time 50 ns DCBUCK2/3 Duty cycle Maximum duty cycle 99.8% tDEAD_BUCK2/3 Shoot-through delay 20 ns COMP2/3HTH COMP2/3 Input threshold low 0.9 1.5 V VREG – VREG – COMP2/3LTH COMP2/3 Input threshold high V 1.2 0.3 RTIEOFF COMP23 COMP2/3 internal tie-off BUCK2/3 enabled. Resistor to VREG and GND, each 70 100 130 k Ω VDIO2 3 Bootstrap diode forward voltage IBOOT1 = –200 mA, VREG-BOOT2, VREG-BOOT3 1.1 1.2 V BOOST CONVERTER Boost adjustable output voltage VBoost Using 3.3-V input voltage, Ieak_switch ≤ 1 A 4.5 15 V range Boost adjustable output voltage Using 3.3-V input voltage Iloadmax = 20 mA, Ipeak_switch = VBoost 15 18.5 V range 0.3 A RDS-ON_BOOST Internal switch on-resistance VREG = 5.8 V 0.3 0.5 Ω VSense5 Feedback voltage With respect to the 800-mV internal reference –1% 1% fSWLBOOST Boost switching frequency fOSC / 2 Maximum internal MOSFET duty DCBOOST 75% cycle at fSWLBOOST ICLBOOST Internal switch current limit 1 1.5 A LINEAR REGULATOR LDO VSUP4 Device operating range for LDO Recommended operating range 3 7 V VLDO Regulated output range IOUT = 1 mA to 350 mA 0.8 5.25 V DC output voltage tolerance at VSENSE4 = 0.8 V (regulated at internal ref) VRefLDO –2% 2% VSENSE4 VSUP4 = 3 V to 7 V, IOUT = 1 mA to 350 mA VSENSE4 = 0.8 V (regulated at internal ref) Vstep1 Load step 1 –2% 2% IOUT = 1 mA to 101 mA, CLDO = 6 to 50 µF, trise = 1 µs VSense4 Feedback voltage With respect to the 800-mV internal reference –1% 1% IOUT = 350 mA, TJ = 25°C 127 143 VDropout Drop out voltage mV IOUT = 350 mA, TJ = 125°C 156 180 IOUT Output current VOUT in regulation –350 –1 mA ILDO-CL Output current limit VOUT = 0 V, VSUP4 = 3 V to 7 V –1000 –400 mA Freq = 100 Hz 60 Vripple = 0.5 VPP, IOUT = 300 mA, PSRRLDO Power supply ripple rejection Freq = 4 kHz 50 dB CLDO = 10 µF Freq = 150 kHz 25 LDOns10-100 Output noise 10 Hz – 100 Hz 10-µF output capacitance, VLDO = 2.5 V 20 µV/ √(Hz) LDOns100-1k Output noise 100 Hz – 10 kHz 10-µF output capacitance, VLDO = 2.5 V 6 µV/ √(Hz) Ceramic capacitor with ESR range, CLDO_ESR = 0 to CLDO Output capacitor 6 50 µF 100 m Ω 6 Submit Documentation Feedback Copyright © 2013, Texas Instruments Incorporated Product Folder Links: TPS65311-Q1 |
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