L4995KTR STMicroelectronics, L4995KTR Datasheet

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... The combination of such features makes this device particularly flexible and suitable to supply microprocessor systems in automotive applications. Order codes Tube L4995J - L4995AJ - L4995RJ L4995K - L4995AK - L4995RK Watchdog Reset Doc ID 13103 Rev 10 L4995 PowerSSO-12 PowerSSO-24 Tape and reel L4995JTR - L4995AJTR - L4995RJTR L4995KTR - L4995AKTR - L4995RKTR Enable 1/34 www.st.com 1 ...

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Contents Contents 1 Block diagrams and pins descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . ...

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L4995 List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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List of figures List of figures Figure 1. Block diagram of L4995 . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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L4995 1 Block diagrams and pins descriptions Figure 1. Block diagram of L4995 VEn Icw Vcw Vwi Figure 2. Block diagram of L4995A VEn Vs Start up Voltage Reference En ...

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Block diagrams and pins descriptions Figure 3. Block diagram of L4995R VEn Table 2. Pins descriptions Pin PowerSSO-12 name pin # GND - TAB ...

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L4995 Table 2. Pins descriptions (continued) Pin PowerSSO-12 name pin # Figure 4. Pins configurations (L4995) PowerSSO-24 pin # 10 7 Regulator voltage output sensing. 5 voltage regulator output Block to ground ...

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... These are stress ratings only and operation of the device at these or any other conditions above those indicated in the Operating sections of this specification is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. Refer also to the STMicroelectronics SURE Program and other relevant quality documents. Table 3. ...

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L4995 2.2 Thermal data For details, please refer to PowerSSO-24 thermal Table 4. mm Thermal data Symbol Thermal resistance Junction to Case: R PowerSSO-12 thj-case PowerSSO-24 Thermal resistance Junction to Ambient: R PowerSSO-12 thj-amb PowerSSO-24 1. The values quoted are ...

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Electrical specifications Table 5. General (continued) Pin Symbol qn_150 qn_250 qn_500 w_hy 1. See Figure 27. 2. Measured output ...

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L4995 Table 7. Watchdog Pin Symbol W Vih i W Vil i W Vih wlth whth cwc cwd wop R ...

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Electrical specifications 2.4 Electrical characteristics curves Figure 5. Output voltage vs T Vo_ref (V) 5,5 Vs= 13.5V 5 250mA 5,3 5,2 5,1 5 4,9 4,8 4,7 4,6 4,5 -50 - Tj(°C ) Figure 7. Drop ...

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L4995 Figure 11. Current limitation vs input voltage Ilim (mA) 1200 1150 1100 1050 1000 950 900 850 800 Tj = 125 °C 750 700 650 600 550 500 Figure 13. Output ...

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Electrical specifications Figure 17 Rlth j Vrlth (% Vo_ref) 50 Vs= 5.6V to 31V -50 - Tj(°C ) Figure 19 wlth j Vwlth (% Vo_ref) 50 ...

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L4995 Figure 23. PSRR C = 4.7 µF 0 0,10 1,00 10,00 100,00 FREQUENCY [KHz] 2.5 Test circuit and waveforms plot 2.5.1 Load regulation Figure 24. Load regulation test circuit Figure 25. Maximum load variation response PSRR [dB] 80,00 70,00 ...

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Application information 3 Application information Figure 26. L4995 application schematic Vcw Vcw Ctw Ctw Wi Wi Vcr Vcr Ctr Ctr Note: The input capacitor Cs > 200nF is necessary for the smoothing of line ...

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L4995 3.2 Reset The reset circuit supervises the output voltage V the in-ternal reference voltage and a resistor output divider. If the output voltage becomes lower than V then R o_th guaranteed for an output voltage V When the output ...

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Application information 3.3 Watchdog A connected microcontroller is monitored by the watchdog input W the Reset output pin is set to low. The pulse sequence time can be set within a wide range with the external capacitor, C constant current ...

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L4995 4 Package and PCB thermal data 4.1 PowerSSO-12 thermal data Figure 30. PowerSSO-12 PC board Note: Layout condition of R area= 77mm x 86mm,PCB thickness=1.6mm, Cu thickness=70μm (front and back side) Thermal vias separation 1.2 mm, Thermal via diameter ...

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Package and PCB thermal data Figure 32. PowerSSO-12 thermal impedance junction ambient single pulse ZTH ( ° 100 10 1 0,1 0,0001 0,001 Equation 4: pulse calculation formula ⋅ δ THδ TH where δ = ...

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L4995 Table 9. PowerSSO-12 thermal parameter (continued) Area/island (cm R4 (°C/W) R5 (°C/W) R6 (°C/W) C1 (W.s/°C) C2 (W.s/°C) C3 (W.s/°C) C4 (W.s/°C) C5 (W.s/°C) C6 (W.s/° Footprint 0.001 0.0022 0.05 0.2 0.27 3 Doc ...

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Package and PCB thermal data 4.2 PowerSSO-24 thermal data Figure 34. PowerSSO-24 PC board Note: Layout condition of R area= 77mm x 86mm,PCB thickness=1.6mm, Cu thickness=70μm (front and back side) Thermal vias separation 1.2 mm, Thermal via diameter 0.3 mm ...

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L4995 Figure 36. PowerSSO-24 thermal impedance junction ambient single pulse ZTH ( ° 100 10 1 0,1 0,0001 0,001 Equation 5: pulse calculation formula ⋅ δ THδ TH where δ Figure ...

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Package and PCB thermal data Table 10. PowerSSO-24 thermal parameter (continued) Area/island (cm R5 (°C/W) R6 (°C/W) C1 (W.s/°C) C2 (W.s/°C) C3 (W.s/°C) C4 (W.s/°C) C5 (W.s/°C) C6 (W.s/°C) 24/ Footprint 9 28 0.001 0.0022 0.025 0.75 1 ...

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L4995 5 Package and packing information ® 5.1 ECOPACK 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 ...

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Package and packing information Table 11. PowerSSO-12 mechanical data Symbol ddd 26/34 Millimeters Min. Typ. 1.250 0.000 1.100 0.230 0.190 4.800 3.800 0.800 5.800 0.250 0.400 ...

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L4995 5.2 PowerSSO-24 mechanical data Figure 39. PowerSSO-24 package dimensions Package and packing information Doc ID 13103 Rev 10 27/34 ...

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Package and packing information Table 12. PowerSSO-24 mechanical data Symbol ( intrusion allowed ...

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L4995 5.3 PowerSSO-12 packing information Figure 40. PowerSSO-12 tube shipment (no suffix) A Figure 41. PowerSSO-12 tape and reel shipment (suffix “TR”) TAPE DIMENSIONS According to Electronic Industries Association (EIA) Standard 481 rev. A, Feb. 1986 Tape width Tape hole ...

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Package and packing information 5.4 PowerSSO-24 packing information Figure 42. PowerSS0-24 tube shipment (no suffix Figure 43. PowerSSO-24 tape and reel shipment (suffix “TR”) TAPE DIMENSIONS According to Electronic Industries Association (EIA) Standard 481 rev. A, Feb. 1986 ...

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L4995 6 Revision history Table 13. Document revision history Date 26-May-2006 05-Jan-2007 18-May-2007 09-Jul-2007 09-Aug-2007 Revision 1 Initial release. L4995A and L4995R versions added: Features section updated and table added. Table 1 updated. Table 5: General , Watchdog Iwi entry ...

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Revision history Table 13. Document revision history (continued) Date 07-Dec-2007 03-Oct-2008 19-Mar-2009 19-May-2009 32/34 Revision Updated Section 2.2: Thermal data – corrected note changing single layer with double layer. Updated Table 5: General – changed I typ. value from 750 ...

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L4995 Table 13. Document revision history (continued) Date 24-Jun-2009 Revision Table 12: PowerSSO-24 mechanical data – Deleted A (min) value – Changed A (max) value from 2.50 to 2.45 10 – Changed A2 (max) value from 2.40 to 2.35 – ...

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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. ...