STLA02 STMicroelectronics, STLA02 Datasheet
STLA02
Specifications of STLA02
Related parts for STLA02
STLA02 Summary of contents
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... Cellular phones ■ MP3 players Description STLA02 is a boost converter that operates from 2 and can provide an output voltage as high and can drive white LEDs connected in series. The total output current capability output voltage ...
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... Contents Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical performance characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1 PWM input (EN 7.2 Selection of the external components . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 9 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 2/23 Doc ID 010005 Rev 1 STLA02 ...
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... STLA02 1 Diagram Figure 1. Block diagram VIN VIN BIAS BIAS 12 V V/5 V EN/ EN/ CONV CONV PWM PWM REFERENCE REFERENCE ILIM ILIM OVP OVP LOGIC LOGIC VBG VBG STEP-UP STEP-UP CONTROL CONTROL ILIM ILIM VSET VSET VBG VBG Doc ID 010005 Rev 1 Diagram VLX ...
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... Pin description Pin n° Symbol GND OUT EN/PWM Exposed pad GND 4/23 Name and function Supply voltage pin Ground Switching pin Output voltage pin Feedback voltage Enable pin or PWM control input for dimming Ground Doc ID 010005 Rev 1 STLA02 ...
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... STLA02 3 Maximum ratings Table 3. Absolute maximum ratings Symbol V Signal supply voltage IN V Inductor connection LX FB Feedback connection EN/PWM Logic pin/PWM input V Output voltage connection OUT P Continuous power dissipation (at T TOT T Operating ambient temperature range OP T Junction temperature J T Storage temperature range STG 1 ...
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... IN C MURATA OUT MURATA L TDK R TYCO FB LED OSRAM Note: Above listed components refer to a typical application with maximum performance settings. Operation of the STLA02 is not limited to the choice of these external components. 6/ VLX VLX VIN VIN VOUT VOUT STLA02 STLA02 EN/PWM EN/PWM ...
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... STLA02 5 Electrical characteristics °C, unless otherwise specified. A Table 7. Electrical characteristics Symbol Parameter Input operating supply V IN voltage I Supply current S Output current I O adjustment V Regulated voltage range OUT I Inductor peak current PEAK Feedback voltage ( bias current ...
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... Figure 5. Quiescent current vs 8/23 STLA02 eff. STLA02 eff. IN [mA] IN [mA [V] [ ...
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... STLA02 Figure 6. STLA02 driver current consumption vs. V 1.80 1.80 1.60 1.60 1.40 1.40 1.20 1.20 1.00 1.00 0.80 0.80 0.60 0.60 0.00 0.00 2.00 2.00 4.00 4.00 Figure 7. Switching frequency vs. temperature -60 -60 -40 -40 IN +85°C +85°C -40°C -40°C 6.00 6.00 8.00 8.00 10.00 10. [V] [ -20 - Temp [°C] Temp [°C] Doc ID 010005 Rev 1 Typical performance characteristics 25°C 25°C 12.00 12.00 14.00 14.00 16.00 16.00 18.00 18.00 AM07822v1 AM07822v1 ...
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... OUT [V] [ [V] [ Doc ID 010005 Rev STLA02 AM07823v1 AM07823v1 AM07824v1 AM07824v1 ...
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... STLA02 Figure 10. Overvoltage protection threshold vs. temp -40 -40 -30 -30 -20 -20 -10 -10 Figure 11. Output current regulation vs. V 21.0 21.0 20.8 20.8 20.6 20.6 20.4 20.4 20.2 20.2 20.0 20.0 19.8 19.8 19.6 19.6 19.4 19.4 19.2 19.2 19.0 19.0 18.8 18.8 18.6 18.6 18.4 18.4 18.2 18.2 18.0 18.0 17.8 17.8 17.6 17.6 17.4 17.4 17.2 17.2 17.0 17 Temp [°C] Temp [° [V] [ Doc ID 010005 Rev 1 Typical performance characteristics ...
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... Figure 16. Line transient response V 12/23 = 2.5 V Figure 13. Switching waveform Figure 15. Overvoltage function step IN VIN VIN IL IL IOUT IOUT VLX VLX Doc ID 010005 Rev IOUT IOUT VOUT VOUT VLX VLX VOUT VOUT IL IL VLX VLX STLA02 ...
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... STLA02 Figure 17. Direct PWM dimming 300 Typical performance characteristics = 2 step BAT EN Doc ID 010005 Rev 1 13/23 ...
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... PWM input (EN) Light intensity can be dimmed by a signal applied to the PWM (EN) input. The PWM signal is directly connected to the enable pin of the STLA02 recommended to use the frequency of the PWM signal in the range of 100 kHz and amplitude of the signal 1.8 V min. The result of the direct PWM dimming method (300 Hz PWM and V 1 ...
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... STLA02 is a powerful switched device, the PCB must be designed in line with rules for designing switched supplies recommended to use a two layer PCB. The power wirings must be as short as possible and wide. Place all external components close to the STLA02. High-energy switched loops should be as small as possible to reduce EMI. Most LEDs need cooling, which may be done by a defined area of copper on the PCB ...
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... Introduction Figure 18. Top layer Figure 19. Bottom layer 16/23 Doc ID 010005 Rev 1 STLA02 ...
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... STLA02 Figure 20. Top overlay Doc ID 010005 Rev 1 Introduction 17/23 ...
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... Package mechanical data 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 trademark. 18/23 Doc ID 010005 Rev 1 STLA02 www.st.com . ECOPACK ...
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... STLA02 Table 8. DFN6 ( mm.) mechanical data Dim Figure 21. DFN6 ( mm.) drawing mm. Min. Typ. 0.70 0.75 0 0.02 0.20 0.18 0.25 1.90 2.00 1.35 1.50 1.90 2.00 0.15 0.30 0.50 0.25 0.35 Doc ID 010005 Rev 1 Package mechanical data Max. 0.80 0.05 0.30 2.10 1.60 2.10 0.40 0.45 7733060D 19/23 ...
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... DFN6 ( mm.) tape and reel mechanical data Dim. Min 12 Figure 22. DFN6 ( mm.) tape and reel drawing 20/23 mm. Typ. Max. 180 13.2 0.504 0.795 2.362 14.4 2.3 2.3 1 Doc ID 010005 Rev 1 inch. Min. Typ. Max. 7.087 0.519 0.567 0.091 0.091 0.039 0.157 0.315 STLA02 ...
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... STLA02 Figure 23. DFN6 ( mm) footprint recommended data Doc ID 010005 Rev 1 Package mechanical data 21/23 ...
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... Revision history 9 Revision history Table 10. Document revision history Date Revision 22-Feb-2011 1 22/23 Initial release Doc ID 010005 Rev 1 Changes STLA02 ...
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... STLA02 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. ...