L4949EDTR-E STMicroelectronics, L4949EDTR-E Datasheet
L4949EDTR-E
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L4949EDTR-E Summary of contents
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... They are designed for supplying the microcomputer controlled systems especially in automotive applications. Order codes Tube L4949ED-E L4949EP-E Doc ID 16823 Rev 1 L4949ED-E L4949EP-E voltage regulator SO-20W (12+4+4) Tape and reel L4949EDTR-E L4949EPTR-E 1/19 www.st.com 1 ...
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Contents Contents 1 Block diagram and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications ...
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L4949ED-E, L4949EP-E List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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List of figures List of figures Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
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L4949ED-E, L4949EP-E 1 Block diagram and pin description Figure 1. Block diagram Note: The block diagram illustrates only a major internal device functionality and it is not intended to mimic any details of hardware design Figure 2. Configuration diagram (top ...
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Block diagram and pin description Table 2. Pin definitions and functions Pin N° SO-8 SO- 14, 5 15, 16 ...
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L4949ED-E, L4949EP-E 2 Electrical specifications 2.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol V DC operating supply voltage SDC V Transient supply voltage (T < 1s) STR I Output current O V Output voltage ...
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Electrical specifications 2.3 Electrical characteristics -40 °C < Table 5. Electrical characteristics Symbol Parameter V Output voltage O V Output voltage O V Output voltage O V Dropout voltage DP Input to output voltage ...
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L4949ED-E, L4949EP-E Table 7. Sense Symbol Parameter V Sense low threshold st V Sense threshold hysteresis sth V Sense output low voltage SL I Sense output leakage SH I Sense input current SI Table 8. Preregulator Symbol Parameter V Preregulator ...
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Application information 3 Application information Figure 3. Application circuit ≥ 1µF, C ≥ 4.7µF, ESR < 10Ω at 10KHz. Recommended for application For stability 3.1 Supply voltage transient High supply voltage transients can cause a ...
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L4949ED-E, L4949EP-E present functions are required. The modular approach of this device allows to get easily also other features and functions when required. 3.3 Voltage regulator The voltage regulator uses an Isolated Collector Vertical PNP transistor as a regulating element. ...
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Application information Figure 5. Output voltage vs input voltage Figure 6. Quiescent current vs supply voltage 3.4 Preregulator To improve the transient immunity a preregulator stabilizes the internal supply voltage This internal voltage is present at Pin ...
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L4949ED-E, L4949EP-E 3.5 Reset circuit The block circuit diagram of the reset circuit is shown in supervises the output voltage. The reset threshold of 4 defined with the internal reference voltage and standby output divider. The reset pulse ...
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Application information Figure 8. Waveforms 14/19 Doc ID 16823 Rev 1 L4949ED-E, L4949EP-E ...
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L4949ED-E, L4949EP-E 4 Package and packing information ® 4.1 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 ...
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Package and packing information Figure 9. SO-8 TP package dimensions 4.3 SO-20 TP package information Table 10. SO-20 TP mechanical data Dim 16/19 mm Min. Typ. 2.35 0.1 0.33 0.23 12.6 7.4 ...
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L4949ED-E, L4949EP-E Table 10. SO-20 TP mechanical data (continued) Dim Figure 10. SO20 TP package dimensions Package and packing information mm Min. Typ. 0.25 0.4 0 (min.)8 (max.) Doc ID 16823 Rev 1 Max. 0.75 1.27 17/19 ...
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Revision history 5 Revision history Table 11. Document revision history Date 24-Nov-2009 18/19 Revision 1 Initial release. Doc ID 16823 Rev 1 L4949ED-E, L4949EP-E Description of changes ...
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... L4949ED-E, L4949EP-E 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. ...