STLED25JR STMicroelectronics, STLED25JR Datasheet
STLED25JR
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STLED25JR Summary of contents
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... IC is disabled. This mode of failure detection allows the device to Table 1. Device summary Order code STLED25JR May 2012 This is information on a product in full production. 5 channels step-up white LED driver Flip-Chip 12 bumps (1.4 x 1.8 mm.) continue operating driver channels that are functioning normally, while avoiding excessive power consumption or associated thermal issues ...
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Contents Contents 1 Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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STLED25 7 Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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Application schematic 1 Application schematic Figure 1. STLED25 application schematic Table 2. Typical external components Component OUT L R SET 1. For 20 mA per branch. Note: All the above components refer to a typical application. Operation ...
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STLED25 Figure 2. Functional block diagram Doc ID 022323 Rev 3 Application schematic 5/30 ...
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Pin configuration 2 Pin configuration Figure 3. Pin configuration (top view) Table 3. Pin description Pin name Pin number VIN ISET D1 EN13 EN45 D2 GND VOUT D4 6/30 VIN ISET EN13 EN45 GND D5 SW VOUT ...
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STLED25 3 Maximum ratings Table 4. Absolute maximum ratings Symbol VIN Supply voltage SW Switching node VOUT Output voltage D1-D5 LED strings EN13, EN45 Signal pins ISET Current setting Machine model ESD Human body model Charged device model T Operating ...
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Electrical characteristics 4 Electrical characteristics - 30 °C < T < 85 ° °C, unless otherwise specified. A Table 6. Electrical characteristics Symbol Parameter General section V Operating input voltage IN Iq Shutdown mode Undervoltage ...
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STLED25 Table 6. Electrical characteristics (continued) Symbol Parameter LED peak-to-peak current I RIPPLE (1) (2) ripple (1) (2) PWM PWM linearity LIN LED driver leakage in OFF I LED_LEAK state I LED driver max current LED_MAX Line_tr Line transient response ...
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Typical application performance 5 Typical application performance 5.1 Quiescent current consumption Figure 4. Quiescent current at different ambient temperatures 0.06 0.05 0.04 0.03 0.02 0.01 0 5.2 Switching frequency Figure 5. Switching frequency at different ambient temperatures 2.7 2.65 2.6 ...
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STLED25 5.3 Continuous output current Figure 6. Output current when V 110 100 1.5 1.9 2.3 2.7 3.1 3.5 3.9 4.3 4.7 5.1 5.5 5.9 5.4 Efficiency at 100 mA ...
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Typical application performance 5.5 Efficiency Figure 8. APPL efficiency when I 100 1.7 5.6 Efficiency Figure 9. APPL efficiency when I 100 ...
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STLED25 5.7 Absolute channel accuracy Figure 10. Absolute channel accuracy - set string current 2.1 2.3 2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9 5.1 5.3 5.5 5.7 5 ...
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Typical application performance 5.9 PWM dimming linearity 0.39 - 10% Figure 12. PWM linearity 0. 0.00 1.00 5.10 PWM dimming linearity 10 - 100% ...
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STLED25 5.11 Inductor peak current Figure 14. Inductor peak current at T 650 600 550 500 450 400 350 300 250 200 150 100 50 0 1.5 5.12 Maximum continues output current Figure 15. Maximum output current at T 180 ...
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Typical application performance Figure 16. Startup waveform Figure 18. Line transient response 16/30 Figure 17. Line transient response Doc ID 022323 Rev 3 STLED25 ...
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STLED25 6 Detailed description The STLED25 is a high efficiency white LED power supply which integrates a step-up converter and 5 high-side current sources. The device is controlled by two enable inputs called EN13 and EN45 according to the labels ...
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Detailed description 6.4 Modes of operation Shutdown mode The device is in shutdown with minimum current consumption. It goes to PWM_start as soon as EN13 or EN45 are pulled high. PWM_start Once ENxx is asserted, the DC-DC is turned ON ...
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STLED25 6.5 Undervoltage lockout The undervoltage lockout function prevents improper operation of the STLED25 when the input voltage is not high enough. When the input voltage is below the UVLO threshold, the device is in shutdown mode. The hysteresis of ...
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Application information 7 Application information 7.1 External passive components 7.1.1 Inductor selection The inductor is the key passive component for switching converters. For the STLED25, an inductance of 4.7 µH is recommended very important to select the right ...
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STLED25 Table 8. Input and output capacitor Manufacturer Part number C IN Murata GRM155R60J155M Samsung CL05A225MQ5NSKC C OUT Murata GRM219R61A106ME47 7.2 Recommended PCB layout The STLED25 is a high-frequency power switching device requires a proper PCB layout in ...
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Application information Figure 21. Mid layer 1 Figure 22. Mid layer 2 22/30 Doc ID 022323 Rev 3 STLED25 ...
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STLED25 Figure 23. Bottom layer Figure 24. Top overlay Doc ID 022323 Rev 3 Application information 23/30 ...
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Application information Figure 25. Photo of the application board 24/30 Doc ID 022323 Rev 3 STLED25 ...
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STLED25 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: ® ...
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Package mechanical data Dim ccc 26/30 Flip-chip 12 mechanical data mm. Min. Typ. 0.45 0.50 0.17 0.20 0.28 0.30 0.22 0.26 1.815 1.845 1.20 1.358 1.388 0.80 0.36 0.40 ...
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STLED25 Tape & reel Flip-Chip 12 mechanical data Dim. Min 12 1.46 Bo 1.89 Ko 0.54 Po 3.9 P 3.9 mm. Typ. Max. Min. 180 13.2 0.504 0.795 2.362 14.4 1.51 1.56 ...
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Package mechanical data Figure 26. Footprint recommended data (mm.) 28/30 Doc ID 022323 Rev 3 STLED25 ...
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STLED25 9 Revision history Table 9. Document revision history Date 10-Oct-2011 13-Dec-2011 11-May-2012 Revision 1 Initial release. Modified: C part number OUT 2 page Document status promoted from preliminary data to production data. Doc ID 022323 Rev ...
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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. ...