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TPS65320QPWPRQ1 Datasheet(PDF) 4 Page - Texas Instruments |
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TPS65320QPWPRQ1 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 34 page  TPS65320-Q1 SLVSAY9A – DECEMBER 2012 – REVISED APRIL 2013 www.ti.com RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT VIN 3.6 40 Supply inputs V VIN_LDO 3.6 20 BOOT1 3.6 46 SW1 –1 40 VFB1 0 3 Buck regulator V SS 0 3 COMP 0 3 RT/CLK 0 3 LDO_OUT 1.1 5.5 LDO regulator VFB2 0 5.25 V nRST 0 5.25 EN1 0 40 Control V EN2 0 40 Temperature Operating junction temperature range, TJ –40 150 °C ELECTRICAL CHARACTERISTICS VIN = 6 V to 27 V, EN1 = EN2 = VIN, TJ = –40°C to 150°C, unless otherwise noted PARAMETER TEST CONDITIONS MIN TYP MAX UNIT VIN (INPUT POWER SUPPLY) Operating input voltage Normal mode, after initial start-up 3.6 14 40 V Shutdown supply current EN1 = EN2 = 0 V, 25°C 2 5 μA ENABLE AND UVLO (EN1 AND EN2 PINS) Enable low level 0.7 V Enable high level 2.5 V VIN falling Internal UVLO threshold Ramp VIN down until output turns OFF 2 2.6 3 V VIN rising Internal UVLO threshold Ramp VIN up until output turns ON 2.5 2.8 3.2 V BUCK CONVERTER Operating: non-switching supply VFB1 = 0.83 V, VIN = 12 V, 25°C 110 140 μA ESR = 0.001 Ω to 0.1 Ω, large output capacitance Output capacitor 10 μF may be required for load transient HIGH-SIDE MOSFET On-resistance VIN = 12 V, SW = 6 V 127 250 m Ω tON-min Minimum on-time fSW = 2.5 MHz 100 ns ERROR AMPLIFIER Input current 50 nA Error-amplifier transconductance –2 µA < ICOMP < 2 µA, VCOMP = 1 V 310 μS (gm) Error-amplifier transconductance –2 µA < ICOMP < 2 µA, VCOMP = 1 V 70 μS (gm) during soft start VFB1 = 0.4 V Error-amplifier dc gain VFB1 = 0.8 V 100 dB Error-amplifier bandwidth 6000 kHz Error-amplifier source or sink VCOMP = 1 V, 100-mV overdrive ±27 μA COMP to switch-current 10.5 S transconductance VFB1 Voltage reference VVIN_LDO = 3.6 V to 10 V 0.788 0.8 0.812 V CURRENT LIMIT Current-limit threshold VIN = 12 V, TJ = 25°C 4 6 A 4 Submit Documentation Feedback Copyright © 2012–2013, Texas Instruments Incorporated Product Folder Links: TPS65320-Q1 |
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