STLD40D STMicroelectronics, STLD40D Datasheet
STLD40D
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STLD40D Summary of contents
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... PDA and organizers ■ Any handsets powered form 3 5.5 V Description STLD40D is a boost converter that operates from 3 5 can provide an output voltage as high and can drive white LEDs in series. The converter is a PFM (pulse frequency modulation) inductor switch that can work in discontinuous (DCM) mode operation ...
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... Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.1 Boost controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.2 Adjustable peak inductor current limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.3 Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5.4 OVP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 Doc ID 12203 Rev 7 STLD40D ...
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... STLD40D Block diagram 1 Figure 1. Block diagram Doc ID 12203 Rev 7 Block diagram 3/16 ...
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... Supply voltage Peak inductor current adjust SET 3 GND Analog ground 4 FB Feedback for the LED current regulation 5 N.C. Not connected 6 V Output voltage for LED supply enable signal 8 SW Boost switch drain PGND Power ground 4/16 Note Doc ID 12203 Rev 7 STLD40D ...
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... STLD40D 3 Maximum ratings Table 3. Absolute maximum ratings Symbol VB VB Breakdown voltage Maximum voltage applied on pin EN V Supply voltage range I V ESD ratings - (HBM MIL STD 883C) ESD T Operating temperature OP T Storage temperature range STG Table 4. Thermal data Symbol R Thermal resistance junction-ambient ...
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... O O Disable Low V IL Enable High V IH Doc ID 12203 Rev 7 = 4.7 µ 4.7 µ Min. Typ. Max. 3.0 5 ° 0.4 0.8 0.8 1.2 0.4 0.4 0.5 38 0.2 0.75 1.1 130 165 200 5 5.5 250 1.5 0.3 1.2 STLD40D = 8 Ω LED Unit µ Ω µ ...
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... Functional description 5.1 Boost controller The STLD40D is a boost converter operating in PFM (pulsed frequency modulation) mode. The converter monitors the LED current through the resistor R voltage falls below the reference voltage REF2, the boost switch T current ramps up. The inductor current is measured by sensing the temperature compensated drain voltage of the boost MOSFET ...
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... The external components proposal should be considered as a design reference guide.The performances mentioned in the electrical characteristics table are not guaranteed for all the possible electrical parameters of the components included in this list other hand the operation of STLD40D is not limited with the use of components included in this list. 8/16 Figure ...
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... STLD40D 7 Typical performance characteristics load ( typ. values @ 25 °C, unless otherwise specified. O Figure 4. I vs. R LED LED Figure 6. I vs. temperature Q Figure 8. R vs.V DSON I = 2.2 µ 4.7 µ 4.7 µ Figure 5. Figure 7. Figure 9. Doc ID 12203 Rev 7 Typical performance characteristics = 8 Ω V ...
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... Typical performance characteristics Figure 10. V vs. temperature FB Figure 12. Efficiency vs. V Figure 14. I vs. duty cycle EN pin LED (dimming) 10/16 Figure 11. V Figure 13 Doc ID 12203 Rev 7 STLD40D vs. temperature EN vs. temperature OVP ...
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... STLD40D 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. Table 7. QFN8 ( mm) mechanical data Dim ...
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... Package mechanical data Figure 15. Drawing dimension QFN8 ( mm) 12/16 Doc ID 12203 Rev 7 STLD40D 8057023_B ...
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... STLD40D Tape & reel QFNxx/DFNxx (3x3) mechanical data Dim. Min 12 mm. Typ. Max. Min. 180 13.2 0.504 0.795 2.362 14.4 3.3 3.3 1 Doc ID 12203 Rev 7 Package mechanical data inch. Typ. Max. 7.087 0.519 0.567 0.130 0.130 0.043 0.157 0.315 ...
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... Package mechanical data Figure 16. QFN8 (3x3) footprint recommended data 14/16 Doc ID 12203 Rev 7 STLD40D ...
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... STLD40D 9 Revision history Table 8. Document revision history Date Revision 20-Mar-2006 1 04-Apr-2006 2 27-Feb-2009 3 03-Mar-2009 4 11-Mar-2009 5 01-Jul-2010 6 31-May-2011 7 Initial release. Add R in table 4 and fig 2 has been updated. SET Modified mechanical data. Modified packaging Table 1 on page Modified: Figure 2 on page 4 and added ...
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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 16/16 Please Read Carefully: © 2011 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 12203 Rev 7 STLD40D ...