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TPS54239DDAR Datasheet(PDF) 3 Page - Texas Instruments |
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TPS54239DDAR Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 21 page  TPS54239 www.ti.com SLVSBT0 – JANUARY 2013 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range, (unless otherwise noted) MIN MAX UNIT VIN Supply input voltage range 4.5 23 V VBST –0.1 29 VBST (10 ns transient) –0.1 32 VBST(vs SW) –0.1 5.7 SS –0.1 5.7 VI Input voltage range EN –0.1 23 V VFB –0.1 5.5 SW –1.8 23 SW (10 ns transient) –3 26 GND –0.1 0.1 VO Output voltage range VREG5 –0.1 5.7 V IO Output Current range IVREG5 0 10 mA TA Operating free-air temperature –40 85 °C TJ Operating junction temperature –40 150 °C ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VIN = 12 V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT IVIN Operating - non-switching supply current VIN current, TA = 25°C, EN = 5V, VFB = 0.8V 850 1200 μA IVINSDN Shutdown supply current VIN current, TA = 25°C, EN = 0 V 3.0 10 μA LOGIC THRESHOLD VENH EN high-level input voltage EN 1.6 V VENL EN low-level input voltage EN 0.6 V REN EN pin resistance to GND VEN = 12 V 200 400 800 k Ω VFB VOLTAGE AND DISCHARGE RESISTANCE TA = 25°C, VO = 1.05 V, continuous mode VFBTH VFB threshold voltage 749 765 781 mV operation IVFB VFB input current VFB = 0.8 V, TA = 25°C 0 ±0.1 μA VREG5 OUTPUT TA = 25°C, 6.0 V < VIN < 23 V, VVREG5 VREG5 output voltage 5.2 5.5 5.7 V 0 < IVREG5 < 5 mA IVREG5 Output current VIN = 6 V, VREG5 = 4.0 V, TA = 25°C 20 mA MOSFET RDS(on)h High side switch resistance 25°C, VBST - SW = 5.5 V (1) 140 m Ω RDS(on)l Low side switch resistance 25°C(1) 70 m Ω CURRENT LIMIT Iocl Current limit L out = 2.2 μH(1) 2.5 3.1 4.6 A THERMAL SHUTDOWN Shutdown temperature (1) 165 TSDN Thermal shutdown threshold °C Hysteresis (1) 40 ON-TIME TIMER CONTROL tON On time VIN = 12 V, VO = 1.05 V 160 ns tOFF(MIN) Minimum off time TA = 25°C, VFB = 0.7 V (1) 260 310 ns (1) Not production tested. Copyright © 2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: TPS54239 |
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