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TPS54225 Datasheet(PDF) 3 Page - Texas Instruments |
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TPS54225 Datasheet(HTML) 3 Page - Texas Instruments |
3 / 23 page TPS54225 www.ti.com SLVSA15C – OCTOBER 2009 – REVISED FEBRUARY 2011 RECOMMENDED OPERATING CONDITIONS over operating free-air temperature range (unless otherwise noted) MIN MAX UNIT VCC Supply input voltage range 4.5 18 V VIN Power input voltage range 2 18 V VBST –0.1 24 VBST (vs SW1, SW2) –0.1 5.7 SS, PG –0.1 5.7 EN –0.1 18 VI Input voltage range V VO, VFB –0.1 5.5 SW1, SW2 –1.8 18 SW1, SW2 (10 ns transient) –3 18 PGND1, PGND2 –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 –40 125 °C ELECTRICAL CHARACTERISTICS over operating free-air temperature range, VCC, VIN = 12V (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT Operating - non-switching supply VCC current, TA = 25°C, EN = 5 V, IVCC 800 1200 μA current VFB = 0.8 V IVCCSDN Shutdown supply current VCC current, TA = 25°C, EN = 0 V 1.8 10 μA LOGIC THRESHOLD VENH EN high-level input voltage EN 2 V VENL EN low-level input voltage EN 0.4 V VFB VOLTAGE AND DISCHARGE RESISTANCE TA = 25°C, VO = 1.05 V 757 765 773 VFB Threshold voltage TA = 0°C to 85°C, VO = 1.05 V (1) 753 777 mV TA = -40°C to 85°C, VO = 1.05 V (1) 751 779 IVFB Input current VFB = 0.8 V, TA = 25°C 0 ±0.1 μA RDischg VO discharge resistance EN = 0 V, VO = 0.5 V, TA = 25°C 50 100 Ω VREG5 OUTPUT TA = 25°C, 6 V < VCC < 18 V, VVREG5 Output voltage 5.3 5.5 5.7 V 0 < IVREG5 < 5 mA VLN5 Line regulation 6 V < VCC < 18 V, IVREG5 = 5 mA 20 mV VLD5 Load regulation 0 mA < IVREG5 < 5 mA 100 mV IVREG5 Output current VCC = 6 V, VREG5 = 4 V, TA = 25°C 70 mA MOSFET RDS(on)h High side switch resistance 25 °C, VBST - SW1, SW2 = 5.5 V 160 m Ω RDS(on)l Low side switch resistance 25 °C 110 m Ω CURRENT LIMIT Iocl Current limit LOUT = 2.2µH (1) 2.5 3.1 4.5 A THERMAL SHUTDOWN Shutdown temperature (1) 150 TSDN Thermal shutdown threshold °C Hysteresis (1) 25 ON-TIME TIMER CONTROL (1) Specified by Design (not production tested). © 2009–2011, Texas Instruments Incorporated 3 Product Folder Link(s): TPS54225 |
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