STCF01 STMicroelectronics, STCF01 Datasheet
STCF01
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STCF01 Summary of contents
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... LEDs with constant current. The step-up (boost) converter input is connected directly to the battery, and its converter output voltage is automatically determined using current feedback-based duty cycle control. The STCF01 has a dedicated pin for two levels of LED current selection. An external resistor is used Order code Part number STCF01PMR October 2006 to set the required current for each level ...
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... Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Detailed description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 STCF01 ...
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... STCF01 1 Diagram Figure 1. Block diagram Diagram 3/16 ...
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... SHDN Shutdown mode, where most of the device internal logic is turned OFF. If this pin is held to GND, the output current flows through the LEDs continuously (Torch mode This is the switch node pin, which is connected to the internal N-channel MOSFET drain. 4/16 Note . STCF01 ...
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... STCF01 3 Application information Figure 3. Application circuit Application information 5/16 ...
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... Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional Operation under these conditions is not implied. Table 3. Thermal data Symbol R Thermal Resistance Junction-Ambient thJA R Thermal Resistance Junction-Case thJC 6/16 Parameter = 70°C) A Parameter STCF01 Value Unit - ±2 kV 500 ...
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... STCF01 5 Electrical characteristics Table 4. DC Electrical characteristics (T = -40°C to 85° 8V, Typ. values @ 25°C, unless otherwise specified) OVP Symbol Parameter General section V Max Operation Supply Voltage I V Under Voltage lockout threshold UVLO I Quiescent Current Q f Switching Frequency SW V Over Voltage Threshold ...
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... Detailed description 6 Detailed description The STCF01 white Led boost converter drives from two up to four white LEDs with a constant current. It needs few external components: two ceramic capacitors (C inductor L=10µH and one schottky diode. The device works with a minimum V an Over Voltage Protection on the output guaranteed at minimum value equal to 17V. This value ensures proper operation with a maximum of four White LEDs in series ...
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... STCF01 7 Typical operating characteristics (T = -40°C to 85° 8V, Typ. values @ 25°C, unless otherwise specified). Figure 4. Maximum output current vs input voltage Figure 6. Efficiency vs temperature Figure 8. Efficiency vs temperature = 3.6V 2.2µ 4.7µ 10µ Figure 5. Figure 7. Figure 9. Typical operating characteristics Ω 12k ...
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... Typical operating characteristics . Figure 10. Feedback voltage vs temperature Figure 12 temperature I LC Figure 14. Peak inductor current vs temperature 10/16 Figure 11. Current feedback leakage vs temperature Figure 13 temperature I HC Figure 15 temperature ONFB STCF01 ...
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... STCF01 . Figure 16. Maximum duty cycle vs temperature Figure 17. Turn on and off response Figure 18. Turn on time V =pulse, FREQ.=1Hz =10µs SHDN r f Figure 20. Multi shoot mode V =GND, V =pulse SEL SHDN Typical operating characteristics V =pulse, FREQ.=1Hz =10µs SHDN r f Figure 19. Start up transient ...
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... These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: www.st.com. 12/16 STCF01 ® packages. ...
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... STCF01 DIM. MIN 0.45 DFN10 (3x3) MECHANICAL DATA mm. TYP MAX. 0.90 1.00 0.02 0.05 0.70 0.20 0.23 0.30 3.00 2.26 2.31 3.00 1.34 1.39 0.50 0.55 0.65 Package mechanical data mils MIN. TYP. MAX. 31.5 35.4 0.8 25.6 7.9 7.1 9.1 118.1 87.0 89.0 118.1 50.8 52.8 19.7 17.7 21.7 7426335A 39.4 2.0 11.8 91.0 54.8 25.6 13/16 ...
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... Package mechanical data 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 STCF01 inch TYP. MAX. 12.992 0.519 0.724 0.130 0.130 0.043 0.157 0.315 ...
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... STCF01 9 Revision history Table 5. Revision history Date Revision 10-Oct-2005 1 28-Apr-2006 2 27-Jul-2006 3 18-Oct-2006 4 First release. Maturity code has been changed. Change value in table TOT Text updates. Revision history Changes 15/16 ...
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... Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2006 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com STCF01 ...