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TPS51217DSCR Datasheet(PDF) 3 Page - Texas Instruments |
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TPS51217DSCR Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 27 page  ELECTRICAL CHARACTERISTICS TPS51217 www.ti.com ...................................................................................................................................................................................................... SLUS947 – JUNE 2009 over recommended free-air temperature range, V5IN = 5V. (Unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT SUPPLY CURRENT V5IN current, TA = 25°C, No Load, I(V5IN) V5IN supply current 320 500 µA V(EN) = 5 V, V(VFB) = 0.63 V ISD(V5IN) V5IN shutdown current V5IN current, TA = 25°C, No Load, V(EN) = 0 V 1 µA INTERNAL REFERENCE VOLTAGE VFB voltage, CCM condition(1) 0.6000 V TA = 25°C, skip mode 0.6000 0.6030 0.6060 V(VFB) VFB regulation voltage TA = 0°C to 85°C, skip mode 0.5974 0.6030 0.6086 V TA = –40°C to 85°C, skip mode 0.5960 0.6030 0.6100 I(VFB) VFB input current V(VFB) = 0.63 V, TA = 25°C, skip mode 0.01 0.2 µA OUTPUT DISCHARGE Output discharge current from IDischg V(EN) = 0 V, V(SW) = 0.5 V 5 13 mA SW pin OUTPUT DRIVERS Source, I(DRVH) = –50 mA 1.5 3 R(DRVH) DRVH resistance Sink, I(DRVH) = 50 mA 0.7 1.8 Ω Source, I(DRVL) = –50 mA 1.0 2.2 R(DRVL) DRVL resistance Sink, I(DRVL) = 50 mA 0.5 1.2 DRVH-off to DRVL-on 7 17 30 tD Dead time ns DRVL-off to DRVH-on 10 22 35 BOOT STRAP SWITCH V(FBST) Forward voltage V(V5IN-VBST), IF = 10 mA, TA = 25°C 0.1 0.2 V Ilkg VBST leakage current V(VBST) = 34.5 V, V(SW) = 28 V, TA = 25°C 0.01 1.5 µA DUTY AND FREQUENCY CONTROL tOFF(min) Minimum off-time TA = 25°C 150 260 400 ns tON(min) Minimum on-time VIN = 28 V, VOUT = 0.6 V, TA = 25°C (1) 86 fSW Switching frequency TA = 25°C (2) 312 340 368 kHz SOFTSTART tss Internal SS time From V(EN) = high to VOUT = 95% 0.9 ms POWERGOOD PG in from lower 92.5% 95% 97.5% V(THPG) PG threshold PG in from higher 107.5% 110% 112.5% PG hysteresis 2.5% 5% 7.5% I(PG)max PG sink current V(PGOOD) = 0.5 V 3 6 mA tPGDEL PG delay Delay for PG in 0.8 1 1.2 ms LOGIC THRESHOLD AND SETTING CONDITIONS Enable 1.8 V(EN) EN voltage V Disable 0.5 I(EN) EN input current V(EN) = 5V 1.0 µA TRAN open 1.83 1.88 1.93 Mask PG, OVP and UVP, high side 2.03 2.08 2.13 V(TRAN) TRAN voltage V Mask PG, OVP and UVP, low side 1.62 1.67 1.72 Hysteresis 0.05 V(TRAN) = 5 V, TA = 25°C 2.5 3.8 5 I(TRAN) TRAN input current µA V(TRAN) = 0 V, TA = 25°C –5 –3.8 –2.5 (1) Specified by design. Not production tested. (2) Not production tested. Test condition is VIN = 8 V, VOUT = 1.1 V, IOUT = 10A using the application circuit shown in Figure 26. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): TPS51217 |
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