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TPS54233QDRQ1 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS54233QDRQ1 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 25 page TPS54233-Q1 www.ti.com SLUSAZ7A – MARCH 2012 – REVISED MARCH 2012 THERMAL INFORMATION TPS54233-Q1 THERMAL METRIC(1) UNITS D (8 PINS) θJA Junction-to-ambient thermal resistance 116.7 θJCtop Junction-to-case (top) thermal resistance 62.4 θJB Junction-to-board thermal resistance 57.0 °C/W ψJT Junction-to-top characterization parameter 14.5 ψJB Junction-to-board characterization parameter 56.5 θJCbot Junction-to-case (bottom) thermal resistance n/a (1) For more information about traditional and new thermal metrics, see the IC Package Thermal Metrics application report, SPRA953. RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN TYP MAX UNIT Operating Input Voltage on (VIN pin) 3.5 28 V Operating junction temperature, TJ –40 +150 °C ELECTRICAL CHARACTERISTICS TA = –40°C to +125°C, VIN = 3.5V to 28V (unless otherwise noted) DESCRIPTION TEST CONDITIONS MIN TYP MAX UNIT SUPPLY VOLTAGE (VIN PIN) Internal undervoltage lockout threshold Rising and Falling 3.5 V Shutdown supply current EN = 0V, VIN = 12V, –40°C to +85°C 1 4 μA Operating – non switching supply current VSENSE = 0.85 V 75 110 μA ENABLE AND UVLO (EN PIN) Enable threshold Rising and Falling 1.25 1.35 V Input current Enable threshold – 50 mV -1 μA Input current Enable threshold + 50 mV -4 μA VOLTAGE REFERENCE Voltage reference 0.772 0.8 0.828 V HIGH-SIDE MOSFET On resistance BOOT-PH = 3 V, VIN = 3.5 V 115 200 m Ω BOOT-PH = 6 V, VIN = 12 V 80 150 ERROR AMPLIFIER Error amplifier transconductance (gm) –2 μA < I(COMP) < 2 μA, V(COMP) = 1 V 92 μmhos Error amplifier DC gain(1) VSENSE = 0.8 V 800 V/V Error amplifier unity gain bandwidth(1) 5 pF capacitance from COMP to GND pins 2.7 MHz Error amplifier source/sink current V(COMP) = 1 V, 100 mV overdrive ±7 μA Switch current to COMP transconductance VIN = 12 V 9 A/V SWITCHING FREQUENCY TPS54233-Q1 Switching Frequency VIN = 12V 210 300 390 kHz Minimum controllable on time VIN = 12V, +25°C 105 130 ns Maximum controllable duty ratio(1) BOOT-PH = 6 V 90% 93% PULSE SKIPPING ECO-MODE™ Pulse skipping Eco-mode™ switch current threshold 100 mA CURRENT LIMIT Current limit threshold VIN = 12 V 2.3 3.5 A (1) Specified by design Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS54233-Q1 |
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