ST1S06XX12 STMICROELECTRONICS [STMicroelectronics], ST1S06XX12 Datasheet

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ST1S06XX12

Manufacturer Part Number
ST1S06XX12
Description
Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed or adjustable, step-down switching regulator
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Features
Description
The ST1S06 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. It provides up to 1.5 A
over an input voltage range of 2.7 V to 6 V. An high
switching frequency (1.5 MHz) allows the use of
tiny surface-mount components: as well as the
resistor divider to set the output voltage value,
only an inductor and two capacitors are required.
Besides, a low output ripple is guaranteed by the
Table 1.
April 2008
Step-down current mode PWM (1.5 MHz) DC-
DC converter
2% DC output voltage tolerance
Synchronous rectification
Inhibit function
Internal soft start
Typical efficiency: > 90 %
1.5 A Output current capability
Not switching quiescent current: max 1.5 mA
over temperature range
R
Uses tiny capacitors and inductors
Operative junction temp. - 30 °C to 125 °C
Available in DFN6D 3x3 exposed pad
DS(ON)
Synchronous rectification with inhibit, 1.5 A, 1.5 MHz fixed or
Part numbers
ST1S06XX12
ST1S06XX33
typ.150 m
Device summary
ST1S06A
ST1S06
Ω
adjustable, step-down switching regulator
ST1S06PU12R
ST1S06PU33R
ST1S06APUR
Order codes
ST1S06PUR
Rev 7
current mode PWM topology and by the use of low
ESR SMD ceramic capacitors. The device is
thermal protected and current limited to prevent
damages due to accidental short circuit. The
ST1S06 is available in DFN6D 3x3 package.
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
DFN6D (3x3 mm)
Package
ST1S06xx
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ST1S06XX12 Summary of contents

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... Besides, a low output ripple is guaranteed by the Table 1. Device summary Part numbers ST1S06 ST1S06A ST1S06XX12 ST1S06XX33 April 2008 adjustable, step-down switching regulator current mode PWM topology and by the use of low ESR SMD ceramic capacitors. The device is thermal protected and current limited to prevent damages due to accidental short circuit ...

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Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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ST1S06xx 1 Diagram Figure 1. Schematic diagram Diagram 3/20 ...

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Pin configuration 2 Pin configuration Figure 2. Pin configuration (top view) ST1S06 Note: * Pin for ADJ version and V FB Table 2. Pin description Pin n° Symbol 1 FB/V Feedback voltage / output voltage O 2 ...

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ST1S06xx 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 INH SWITCH Max. voltage of output pin voltage V /V Feedback voltage ...

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Electrical characteristics 4 Electrical characteristics Table 5. Electrical characteristics for ST1S06 ( IN_SW IN_A INH to 125 °C (unless otherwise specified. Typical values are referred to T Symbol Parameter FB Feedback voltage I V pin bias ...

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ST1S06xx Table 6. Electrical characteristics for ST1S06PM12 ( IN_SW IN_A INH to 125 °C unless otherwise specified. Typical values are referred to T Symbol Parameter OUT Output feedback pin I I pin bias current O O ...

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Electrical characteristics Table 7. Electrical characteristics for ST1S06PM33 ( IN_SW IN_A INH to 125 °C unless otherwise specified. Typical values are referred to T Symbol Parameter OUT Output feedback pin I I pin bias current O ...

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ST1S06xx 5 Typical performance characteristics ( 4.7 µF, C IN_SW IN_A INH I values are referred to 25 °C) Figure 3. Efficiency vs output current Figure 5. Efficiency vs output current ...

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Typical performance characteristics Figure 9. Voltage feedback vs temperature Figure 11. Feedback pin bias current vs temperature Figure 13. Quiescent current vs temperature 10/20 Figure 10. Input voltage vs output voltage Figure 12. Quiescent current vs temperature Figure 14. Inhibit ...

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ST1S06xx Figure 15. Inhibit voltage vs temperature Figure 17. Line regulation vs temperature Figure 19. PWM switching frequency vs temperature Typical performance characteristics Figure 16. Inhibit voltage vs temperature Figure 18. Load regulation vs temperature Figure 20. NMOS switch on ...

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Typical performance characteristics Figure 21. PMOS switch on resistance vs temperature Figure 23. Inhibit transient 10mA I INH O 12/20 Figure 22. Inhibit transient ...

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ST1S06xx 6 Typical application Figure 24. Application circuit Typical application 13/20 ...

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Application notes 7 Application notes The ST1S06 is an adjustable current mode PWM step-down DC-DC converter with internal 1.5 A power switch, packaged in a 6-lead DFN 3x3. It’s a complete 1.5 A switching regulator with its internal compensation eliminating ...

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ST1S06xx 8 Package mechanical data In order to meet environmental requirements, ST offers these devices in ECOPACK packages have a lead-free second level interconnect. The category of second Level Interconnect is marked on the package and on the inner box ...

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Package mechanical data DFN6D (3x3 mm) mechanical data Dim. Min 0.23 D 2.90 D2 2.23 E 2. 0.30 16/20 mm. Typ. Max. Min. 1.00 0.031 0.02 0.05 0 0.20 0.45 ...

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ST1S06xx Tape & Reel QFNxx/DFNxx (3x3) Mechanical Data Dim. Min 12 mm. Typ. Max. Min. 330 13.2 0.504 0.795 2.362 18.4 3.3 3.3 1 Package mechanical ...

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Package mechanical data Figure 25. DFN6 (3x3 mm) footprint recommended data 18/20 ST1S06xx ...

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ST1S06xx 9 Revision history Table 8. Document revision history Date Revision 08-May-2006 1 Initial release. 06-Jun-2006 2 Table 3 16-Oct-2006 3 Add new mechanical data DFN6D. 09-Nov-2006 4 Mechanical data information for DFN6 update. 03-Apr-2007 5 Tape and reel updated. ...

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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 ...

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