L5956 STMicroelectronics, L5956 Datasheet
L5956
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L5956 Summary of contents
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... L5956 L5956PD L5956PDTR January 2010 Multifunction voltage regulator for car radio PowerSO20 (slug-up) Description The L5956 contains a triple voltage regulator and a power switch. The IC includes a monitoring circuit for detection. The IC features a very low quiescent under standby. Package Multiwatt 15 (vertical) PowerSO20 PowerSO20 ...
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... Contents Contents 1 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 2/17 Doc ID 13852 Rev 2 L5956 ...
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... L5956 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Doc ID 13852 Rev 2 List of tables 3/17 ...
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... Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Figure 7. Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 8. Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 9. Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Figure 10. Short circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Figure 11. PowerSO20 (slug-up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 14 Figure 12. Multiwatt 15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 15 4/17 Doc ID 13852 Rev 2 L5956 ...
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... L5956 1 Block diagram and pins description 1.1 Block diagram Figure 1. Block diagram VINI (MAIN) EN_SW ENREG1_3(8.5V_5V) VIN2 ENREG4(3.3V) IGN 1.2 Pins description Figure 2. Pins connection (top view) VIN2 20 REG3(5V) 19 N.C. 18 REG1(8.5V N.C. 15 VIN1 REG2(5V) 12 HEATSINK 11 D02AU1343 PowerSO POWER SWITCH REG1 REG2 ...
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... Standby (-20 ° °C) IGN = Doc ID 13852 Rev 2 Value 30 50 internally limited - -55 to 150 -55 to 150 43 PowerSO Multiwatt Max. 1.5 1.8 Min. Typ. Max non operating non operating - - - 5 - 100 170 = 18 V L5956 Unit V V °C °C °C W Unit °C/W Unit µ µA ...
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... L5956 Table 4. Electrical characteristics (continued) Symbol Parameter Load dump Battery overvoltage V in1 Load dump Battery overvoltage V in2 REGULATOR 1 V Output voltage 8 (REG 1) ΔV Line regulation ΔV Line regulation ΔVi Load regulation I Quiescent current q PSRR Supply voltage ripple rejection V Drop out voltage ...
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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 Doc ID 13852 Rev 2 L5956 Min. Typ. Max. Unit 3.15 3.3 3. 100 2.5 V ...
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... L5956 Table 4. Electrical characteristics (continued) Symbol Parameter V Low V threshold HOLD R IN1 V Hysteresis low TH. HYS (HOLD_L) V High V threshold HOLD F IN1 V Hysteresis high TH. HYS (HOLD_M) IGNITION BUFFER (push-pull with Schmidt trigger) IGN IGN IN out falling IGN IGN IN out rising V Hysteresis of ignition buffer hys(IGNout) ...
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... Doc ID 13852 Rev 2 SW REG 1 REG1 REG 2 REG2 REG 3 REG3 10 KΩ REG 4 REG4 HOLD to µProcessor to µProcessor RES RES RESET RESET CRES CRES to µProcessor to µProcessor BUFFER BUFFER AC00427A IGN IGN OUT OUT 100 C [µF] L5956 22 µF Cfilt (*) Cfilt (*) Cfilt (*) Cfilt (*) ...
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... L5956 3 Timing diagrams Figure 5. Timing diagram of regulators and power switch V VIN1=VIN2 9V 8.5V REG1(8.5V) 5V REG3(5V) ENREG1-3 3.3V REG4(3.3V) ENREG4 5V REG2(5V POWER SWITCH 9V EN-SW 18V < Figure 6. Backup and reset diagram M ≤ 22V VBATT 14 5V PERM 5 4.8 4.7 5 CDELAY 3 RESET Doc ID 13852 Rev 2 Timing diagrams ...
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... Ignition buffer diagram 50V IGNITION INPUT 1.27V 1.17V IGNITION OUTPUT 14V VIN1 Figure 9. Protection of the power switch 12/17 DUMP 22 18 9 16V DELAYED 1.5A Doc ID 13852 Rev 2 9V 8.5V 5V 3.3V ON T≅160 LOAD DUMP D02AU1424 NOT IN CASE DELAYED V <16V IN1 D02AU1425 L5956 ...
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... L5956 Figure 10. Short circuit diagram SWITCH SHORT TO GND REG1 SHORT TO GND REG2 SHORT TO GND REG3 REG4 HOLD Doc ID 13852 Rev 2 Timing diagrams SHORT TO GND SHORT TO GND 13/17 ...
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... (x2 Doc ID 13852 Rev 2 OUTLINE AND MECHANICAL DATA PowerSO20 (SLUG UP DETAIL DETAIL A 0.35 Gage Plane SEATING PLANE (COPLANARITY) PSO20DME 0088529 C L5956 ® ...
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... L5956 Figure 12. Multiwatt 15 (vertical) mechanical data and package dimensions DIM. MIN 0.49 F 0.66 G 1.02 G1 17. 21.9 L1 21.7 L2 17.65 L3 17.25 L4 10.3 L7 2.65 M 4.25 M1 4.73 S 1.9 S1 1.9 Dia1 3.65 mm inch TYP. MAX. MIN. TYP. MAX. 0.197 2.65 0.104 1.6 0.063 1 0.039 0.55 ...
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... Revision history 5 Revision history Table 5. Document revision history Date 29-Aug-2007 08-Jan-2010 16/17 Revision 1 Initial release. Updated Figure Added Figure 4: Maximum ESR for stability valid for all the regulators outputs on page 10. Doc ID 13852 Rev 2 Changes 5 and 7. L5956 ...
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... L5956 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. ...