ST1S03 STMicroelectronics, ST1S03 Datasheet
ST1S03
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ST1S03 Summary of contents
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... Uses tiny capacitors and inductors ■ Available in DFN 3x3 mm exposed pad Description The ST1S03 is a step down DC-DC converter optimized for powering low-voltage digital core in HDD applications and, generally, to replace the high current linear solution when the power dissipation may cause an high heating of the application environment ...
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Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Diagram Figure 1. Schematic diagram 3/16 ...
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Pin configuration Figure 2. Pin connections (top view) Table 2. Pin description Pin n° Symbol GND IN_SW 5 V IN_A 6 N.C. 4/16 Name and function Voltage of feedback System ground ...
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Maximum ratings Table 3. Absolute maximum ratings Symbol V Positive power supply voltage IN_SW V Positive power supply voltage IN_A SWITCH voltage Max voltage of output pin V Feedback voltage FB I Common mode input voltage VFB T Max ...
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Electrical characteristics Table 5. Electrical characteristics ( 125 °C, unless otherwise specified. Typical values are referred to 25 °C) J Symbol Parameter FB Feedback voltage I V pin bias current Quiescent current ...
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... Finally, the ST1S03 has been designed to work properly with X5R or X7R SMD ceramic capacitors both at the input and at the output. this kind of capacitors, thanks to their very low series resistance (ESR), minimize the output voltage ripple ...
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Typical application Figure 3. Application circuits 8/16 ...
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Typical performance characteristics (L1 = 3.3 µ 4.7 µ Figure 4. Load voltage feedback vs temp. Figure 6. Line output voltage regulation vs temperature Figure 8. Voltage feedback vs output current Figure ...
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Figure 10. Quiescent current vs temperature Figure 12. Minimum operating voltage vs output voltage Figure 14. Efficiency vs output current 10/16 Figure 11. Quiescent current vs input voltage Figure 13. Efficiency vs temperature Figure 15. Switch V vs temperature DS ...
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Figure 16. Switch RDS-ON vs temperature Figure 18. Load transient response V =5V, I =100mA to 780mA, C =4.7µ L=3.3µH, T =38µs, T =25° Figure 20. Start-Up transient 25°C ...
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Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages. These packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner ...
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DFN6D (3x3 mm) mechanical data mm. Dim. Min. Typ 0.02 A3 0.20 b 0.23 D 2.90 3.00 D2 2.23 E 2.90 3.00 E2 1.50 e 0.95 L 0.30 0.40 inch. Max. Min. Typ. 1.00 0.031 0.05 ...
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Tape & Reel QFNxx/DFNxx (3x3) Mechanical Data Dim. Min 12 14/16 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 18.4 3.3 3.3 1 inch. Typ. ...
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Revision history Table 6. Document revision history Date Revision 11-Nov-2004 1 08-Feb-2005 2 03-Mar-2005 3 13-Jul-2005 4 29-Mar-2007 5 07-Mar-2008 6 Changes First Release. Maturity Change. Mistake on Figure changed 125 ==> 150°C on Table 3. ...
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... Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...