ST1S09 STMicroelectronics, ST1S09 Datasheet
ST1S09
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ST1S09 Summary of contents
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... PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermally protected and the output current limited to prevent damages due to accidental short circuit. The ST1S09 is available in the DFN6 ( mm) package. (1) Doc ID 13632 Rev 4 ST1S09 ...
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... Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 2/18 Doc ID 13632 Rev 4 ST1S09 ...
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... ST1S09 1 Diagram Figure 1. Schematic diagram (*) Only for ST1S09IPU (**) Only for ST1S09PU Doc ID 13632 Rev 4 Diagram 3/18 ...
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... Feedback voltage System ground Switching pin Power supply for the MOSFET switch Power supply for analog circuit Inhibit (to turn off the device) / Power Good / Not Connected To be connected to PCB ground plane for optimal electrical and thermal performance Doc ID 13632 Rev 4 ST1S09 ST1S09I ...
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... ST1S09 3 Maximum ratings Table 3. Absolute maximum ratings Symbol V Positive power supply voltage IN_SW V Positive power supply voltage IN_A V Inhibit voltage (I version) INH SWITCH Voltage Max. voltage of output pin V Feedback voltage FB PG Power Good open drain T Max junction temperature J T Storage temperature range ...
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... Electrical characteristics 4 Electrical characteristics Refer to Figure µ 2.7 µ referred to 25 °C) Table 6. Electrical characteristics for ST1S09PU Symbol Parameter FB Feedback voltage I V pin bias current Input voltage I Under voltage lock out UV LO threshold Over voltage protection threshold OVP Over voltage protection ...
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... ST1S09 Refer to Figure µ 2.7 µH, T referred to 25 °C) Table 7. Electrical characteristics for ST1S09IPU Symbol Parameter FB Feedback voltage I V pin bias current Minimum input voltage I Over voltage protection threshold OVP Over voltage protection hysteresis I Quiescent current Q I Output current O V Inhibit threshold ...
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... T [°C] T [°C] Output voltage vs. input voltage V V @1.2V @1. =from 0 to 5.5V, I =from 0 to 5.5V INH INH [V] [ ST1S09 V V =5V = OFF OFF =2A = ...
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... ST1S09 Figure 9. Line regulation vs. temperature 1 1 0.8 0 @1.2V @1. from 2.7V to 5.5V from 2.7V to 5.5V 0.6 0.6 0.4 0.4 0.2 0 -0.2 -0.2 -0.4 -0.4 -0.6 -0.6 -0.8 -0 -75 -50 -25 -75 -50 - [°C] T [°C] Figure 11. PWM Switching frequency vs. temperature 2 2 1.9 1 @1.2V @1. 1.8 1.8 1.7 1.7 1.6 1.6 1.5 1.5 1.4 1.4 1.3 1.3 1.2 1.2 1.1 1 -75 -75 -50 -50 -25 - [°C] T [°C] Figure 13 ...
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... OVP ON OVP ON -50 -50 -25 - 100 125 150 175 100 125 150 175 T [°C] T [° 3.3 µ 4.7 µ 3 ST1S09 =100nF =100nF FB FB =100nF =100nF INH INH ...
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... ST1S09 6 Typical application Figure 21. Application circuits Figure 22. Application circuits Doc ID 13632 Rev 4 Typical application 11/18 ...
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... Finally, the ST1S09 has been designed to work properly with X5R or X7R SMD ceramic capacitors both at the input and at the output. These types of capacitors, due to their very low series resistance (ESR), minimize the output voltage ripple ...
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... ST1S09 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ® ECOPACK packages, depending on their level of environmental compliance. ECOPACK specifications, grade definitions and product status are available at: www.st.com. ® ECOPACK trademark. Doc ID 13632 Rev 4 Package mechanical data ® ...
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... 0.23 D 2.90 D2 2.23 E 2. 0.30 14/18 DFN6D (3x3) Mechanical Data mm. Typ. Max. 1.00 0.02 0.05 0.20 0.45 3.00 3.10 2.50 3.00 3.10 1.75 0.95 0.40 0.50 Doc ID 13632 Rev 4 inch. Min. Typ. 0.031 0 0.001 0.008 0.009 0.114 0.118 0.088 0.114 0.118 0.059 0.037 0.012 0.016 7946637B ST1S09 Max. 0.039 0.002 0.018 0.122 0.098 0.122 0.069 0.020 ...
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... ST1S09 Figure 23. DFN6 ( mm) footprint recommended data Doc ID 13632 Rev 4 Package mechanical data 15/18 ...
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... Package mechanical data Tape & Reel QFNxx/DFNxx (3x3) Mechanical Data Dim. Min 12 16/18 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 18.4 3.3 3.3 1 Doc ID 13632 Rev 4 ST1S09 inch. Typ. Max. 12.992 0.519 0.724 0.130 0.130 0.043 0.157 0.315 ...
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... ST1S09 9 Revision history Table 8. Document revision history Date Revision 18-Jun-2007 1 05-Jul-2007 2 31-Jan-2008 3 19-Apr-2010 4 First release. Removed incorrect watermark. Modified: Table 6 on page 6. Modified: Table 1 on page 1. Doc ID 13632 Rev 4 Revision history Changes 17/18 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 18/18 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 13632 Rev 4 ST1S09 ...