L5957 STMicroelectronics, L5957 Datasheet
L5957
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L5957 Summary of contents
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... Load dump protection ■ Thermal shutdown ■ Overcurrent limitation ■ All pins ESD protected Description The L5957 contains a triple voltage regulator and a power switch. Table 1. Device summary Order code L5957PD L5957PDTR L5957 January 2010 Multifunction voltage regulator for car radio The IC includes a monitoring circuit for detection ...
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... Contents Contents 1 Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 Doc ID 14442 Rev 2 L5957 ...
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... L5957 List of tables Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 3. Thermal data Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Doc ID 14442 Rev 2 List of tables 3/16 ...
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... Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 7. Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 8. Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 10. Short circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 11. PowerSO20 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13 Figure 12. Multiwatt15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 14 4/16 Doc ID 14442 Rev 2 L5957 ...
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... IGN IN BUFFER VIN2 20 REG3(5V) 19 N.C. 18 REG1(8.5V PowerSO N.C. 15 VIN1 REG2(5V) 12 HEATSINK 11 D02AU1343 /L5957 Multiwatt Doc ID 14442 Rev 2 Block and pins connection diagrams SW REG 1(8.5V) REG 2(PERM)(5V) REG 3(5V) REG 4(3.3V) HOLD RES RESET BUFFER CRES D02AU1342/L5957 IGN OUT 1 REG4(3.3V) 2 IGNIN 3 IGNOUT 4 ...
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... Test condition Operating Operating Standby (-20 ° °C) IGN = REGx = 5 V, REGsw = 5 V, IGN = Standby (-20 ° °C) IGN = in1 V in2 Doc ID 14442 Rev 2 L5957 Value Unit internally limited - °C -55 to 150 °C -55 to 150 ° PowerSO Multiwatt Unit Max. 1.5 1.8 °C/W Min ...
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... L5957 Table 4. Electrical characteristics (continued) Symbol Parameter Regulator 1 V Output voltage 8 (REG 1) ΔV Line regulation ΔVi Load regulation I Quiescent current q PSRR Supply voltage ripple rejection V Drop out voltage drop I Current limit m Regulator 2 V Output voltage (ST BY) ΔV Line regulation ΔVi Load regulation ...
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... Peak time < Peak time > Vreg2 = 5 V Vreg2 = Reset = 0 V Reset = kΩ RES RES - - SINK(RES) - low Low detection in1 in1 Normal high detection high low detection in1 V Low TH. IN1 - V High TH. IN1 - Doc ID 14442 Rev 2 L5957 Min. Typ. Max. Unit - - 100 2. ...
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... L5957 Table 4. Electrical characteristics (continued) Symbol Parameter Ignition buffer (push-pull with schmitt trigger) IGN IGN IN out falling IGN IGN IN out rising V Hysteresis of ignition buffer hys(IGNout) IH High level source current source(IGNout) IL Low level sink current sink(IGNout) V Low level ol V High level oh IGN ...
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... Timing diagram of regulators and power switch V M VIN1=VIN2 9V 8.5V REG1(8.5V) 3.3V REG4(3.3V) ENREG1-4 5V REG3(5V) ENREG3 5V REG2(5V POWER SWITCH 9V EN-SW 18V ≤ V ≤ 22V M 10/16 ESR [Ω] Maximum ESR 10 5 Stable region 1 Minimum ESR 0 AC00591 Doc ID 14442 Rev 2 L5957 100 C [µF] DUMP D02AU1420A ...
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... L5957 Figure 6. Backup and reset diagram Figure 7. Hold and thermal protection 22 18 VIN1 9.5 5 HOLD TEMPERATURE PROTECTION 8.5V REG1(8.5V) 5V REG2(5V) 5V REG3(5V) 3.3V REG4(3.3V) 5V ENREG3 ENREG1-4 VBATT 14 5V PERM 5 4.8 4.7 5 CDELAY 3 RESET DUMP Doc ID 14442 Rev 2 Electrical specifications BACKUP CAP D02AU1422 9V 8 ...
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... Figure 9. Protection of the power switch V Figure 10. Short circuit diagram REG1 REG2 REG3 REG4 SWITCH 12/16 SW 16V DELAYED 1.5A SHORT TO GND SHORT TO GND SHORT TO GND Doc ID 14442 Rev 2 LOAD DUMP D02AU1424 NOT IN CASE DELAYED V <16V IN1 D02AU1425 SHORT TO GND SHORT TO GND L5957 ...
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... L5957 3 Package information 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: www.st.com. ® ECOPACK trademark. Figure 11. PowerSO20 (slug up) mechanical data and package dimensions DIM ...
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... Doc ID 14442 Rev 2 OUTLINE AND MECHANICAL DATA Multiwatt15 (ver tical) 0016036 J L5957 ...
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... L5957 4 Revision history Table 5. Document revision history Date 11-Feb-2008 08-Jan-2010 Revision 1 Initial release. Updated Section 1: Block and pins connection diagrams on page 2 Updated Figure 3, 5 Doc ID 14442 Rev 2 Revision history Changes and 6. 5. 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 - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 16/16 Please Read Carefully: © 2010 STMicroelectronics - All rights reserved STMicroelectronics group of companies www.st.com Doc ID 14442 Rev 2 L5957 ...