st8r00 STMicroelectronics, st8r00 Datasheet
st8r00
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st8r00 Summary of contents
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... Only three external components are required: an inductor and two ceramic capacitors. The ST8R00 is suitable for use in equipment where low noise, low ripple and low supply current are required. The ST8R00 is available in a very small DFN8 4x4mm package. Package ST8R00PUR ST8R00WPUR Rev ...
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Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Block diagram Figure 1. Schematic diagram Thermal Thermal INH INH Inhibit Inhibit REF REF LX LX PGND PGND PWM Control PWM Control PGND PGND GND GND OUT OUT FB FB 3/19 ...
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Pin configuration Figure 2. Pin connections (top view) Table 1. Pin description Pin n° Symbol PGND 3 GND INH OUT EXP pad GND 4/19 Name and function Switching ...
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... Typical application circuit 3 Figure 3. Application circuit =10µF =10µ L=4.7µH L=4.7µ OUT OUT INH INH ST8R00 ST8R00 FB FB GND GND PGND PGND =10µF =10µ 5/19 ...
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Maximum ratings Table 2. Absolute maximum ratings Symbol V Output voltage O V Input voltage I V Inhibit voltage INH V LX pin voltage pin output current LX T Storage temperature range STG T Operating junction ...
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... Electrical characteristics Table 5. Electrical characteristics for the ST8R00 ( -25°C to 125° Symbol Parameter V Output voltage O V Start-up voltage START-UP V Input voltage range I V Feedback voltage FB V Feedback voltage FB_OFF I Feedback current FB I Supply current SUPPLY R Internal N channel R DSON_N DSON ...
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... Table 6. Electrical characteristics for the ST8R00W ( -25°C to 125° Symbol Parameter V Output voltage O V Start-up voltage START-UP V Input voltage range I V Feedback voltage FB V Feedback voltage FB_OFF I Feedback current FB I Supply current SUPPLY R Internal N channel R DSON_N DSON R Internal P channel R ...
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... I INH INH -50 -50 -25 - 100 125 150 175 100 125 150 175 T [°C] T [°C] Supply current vs temperature (for ST8R00W =5,V =5,V =2V,No Load, V =2V,No Load INH INH 100 125 150 175 100 125 150 175 T [° ...
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Figure 10. Inhibit voltage vs temperature =4V, V =4V, V from 0 to 2V, I from 0 to 2V, I =50mA =50mA I I INH INH O O 2.5 2 1.5 1 ...
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... T [°C] T [°C] temperature =5V = -25 - 100 125 150 175 100 125 150 175 T [°C] T [°C] ST8R00W @7V @ =5V, I =5V, I =from =from INH INH O O 500 600 700 800 900 1000 ...
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... Figure 25. Efficiency vs input voltage 100 100 ST8R00 ST8R00 70 70 ST8R00W ST8R00W 3.5 3.5 0.8 0 Figure 27. Inductor current (for ST8R00W) ST8R00 ST8R00 ST8R00W ST8R00W 5.5 5 6.5 6 2V, L=4.7µ INH voltage =5V = INH INH P P ...
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Figure 28. Load transient V =V =5V, I =from 10mA to 500mA I INH O Figure 30. INH transient V =6, V from 0V to 2V, I =1A I INH O Figure 29. Line transient ...
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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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DFN8 (4x4) Mechanical Data mm. Dim. Min. Typ. A 0.80 0. 0.02 A3 0.20 b 0.23 0.30 D 3.90 4.00 D2 2.82 3.00 E 3.90 4.00 E2 2.05 2.20 e 0.80 L 0.40 0.50 inch. Max. Min. Typ. ...
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Figure 32. DFN8 (4x4) Footprint Recommended Data 16/19 ...
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Tape & Reel QFNxx/DFNxx (4x4) Mechanical Data mm. Dim. Min. Typ 12 4.35 Bo 4. Max. Min. 330 13.2 0.504 0.795 101 3.898 14 inch. Typ. ...
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Revision history Table 7. Revision history Date Revision 23-May-2007 1 18/19 Changes Initial release. ...
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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. ...