L5957 Multifunction voltage regulator for car radio Features ■ Four outputs: – 8.5 V @ 500 mA – 5 V @ 300 mA Permanent – 5 V @ 800 mA – 3.3 V @ 800 mA ■ 2 A high side driver ■ Reset function ■ Ignition comparator ■ Load dump protection ■ Thermal shutdown ■ Overcurrent limitation ■ All pins ESD protected Multiwatt15 (Vertical) PowerSO20 (Slug up) The IC includes a monitoring circuit for detection. Description The L5957 contains a triple voltage regulator and a power switch. Table 1. The IC features a very low quiescent current in standby. Device summary Order code Package Packing L5957PD PowerSO20 (slug up) Tube L5957PDTR PowerSO20 (slug up) Tape and reel L5957 Multiwatt15 (Vertical) Tube January 2010 Doc ID 14442 Rev 2 1/16 www.st.com 1 Contents L5957 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 List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Doc ID 14442 Rev 2 3/16 List of figures L5957 List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. 4/16 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Maximum ESR for stability valid for all the regulators outputs . . . . . . . . . . . . . . . . . . . . . . 10 Timing diagram of regulators and power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Short circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 PowerSO20 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13 Multiwatt15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 14 Doc ID 14442 Rev 2 L5957 1 Block and pins connection diagrams Block and pins connection diagrams Figure 1. Block diagram POWER SWITCH VINI (MAIN) SW EN_SW REG1 REG 1(8.5V) REG2 REG 2(PERM)(5V) REG3 REG 3(5V) REG4 REG 4(3.3V) BU VIN2 ENREG3(5V) ENREG1-4(8.5V, 3.3V) HOLD THERMAL PROTECTION DUMP LOAD PROTECTION RESET BUFFER CRES IGNITION BUFFER IGNIN D02AU1342/L5957 IGNOUT Figure 2. RES Pins connection VIN2 20 1 REG4(3.3V) REG3(5V) 19 2 IGNIN N.C. 18 3 IGNOUT REG1(8.5V) 17 4 RES SW 16 5 CRES N.C. 15 6 ENREG1-4(8.5V, 3.3V) VIN1 14 7 ENREG3(5V) BU 13 8 EN_SW REG2(5V) 12 9 HOLD HEATSINK 11 10 GND PowerSO D02AU1343 /L5957 15 VIN2 14 REG3 13 REG1 12 SWITCH 11 BU 10 REG2 9 VIN1 8 GND 7 HOLD 6 EN SW 5 ENREG1, 4 4 ENREG3 3 CRES 2 RES 1 REG4 Multiwatt D03AU1513/L5957 Doc ID 14442 Rev 2 5/16 Electrical specifications L5957 2 Electrical specifications 2.1 Absolute maximum ratings Table 2. Absolute maximum ratings Symbol 2.2 Parameter Value Unit VSDC DC operating supply voltage 30 V VSTR Transient supply voltage 50 V IO Output current internally limited Top Operating temperature range -40 to 85 °C Tstg Storage temperature -55 to 150 °C Tj Junction temperature -55 to 150 °C Pd Power dissipation Tcase = 85 °C 43 W PowerSO Multiwatt Unit Thermal data Table 3. Thermal data Symbol Rth j-case 2.3 Parameter Thermal resistance junction-to-case Max. 1.5 1.8 °C/W Electrical characteristics VS = 14.4 V; Tamb = 25 °C; unless otherwise specified. Table 4. Electrical characteristics Symbol Parameter Test condition Min. Typ. Max. Unit Input supplies Vin1 Input supply voltage 1 Operating 9 - 18 V Vin2 Input supply voltage 2 Operating 6 - 18 V Standby (-20 °C to 85 °C) IGNIN = 5 V - - 70 μA REGx = 5 V, REGsw = 5 V, IGNIN = 5 V - 5 - mA Standby (-20 °C to 85 °C) IGNIN = 5 V, VCC = 18 V - 100 - µA Vin1 18 20 22 V Vin2 18 20 22 V Iq Load Dump Vin1 Load Dump Vin2 6/16 Total quiescent current Battery over voltage Doc ID 14442 Rev 2 L5957 Electrical specifications Table 4. Symbol Electrical characteristics (continued) Parameter Test condition Min. Typ. Max. Unit - 8 8.5 9 V Vin1 = 10 to 18 V; I = 500 mA - - 50 mV Vin1 = 9.3 to 18 V; I = 10 mA - - 50 mV Load regulation Ireg1 = 1 to 500 mA - - 100 mV Quiescent current Ireg1 = 10 mA - - 5 mA PSRR Supply voltage ripple rejection f = 1 kHz; Vin1 = 1.5 Vpp; Io = 500 mA 50 - - dB Vdrop Drop out voltage Ireg1 = 500 mA (1) - - 0.6 V Current limit Rshort = 0.5 Ω 0.6 - 1.2 A Output voltage 5 V - 4.7 5 5.3 V Vin1 = 7 to 18 V; I = 300 mA - - 50 mV Vin1 = 6 to 18 V; I = 10 mA - - 50 mV Load regulation Ireg2 = 1 to 300 mA - - 100 mV Quiescent Current Ireg2 = 10 mA - - 3 mA PSRR Supply voltage ripple rejection f = 1 kHz; Vin1 = 1.5 Vpp; Io = 300 mA 50 - - dB - 1.5 V Drop out voltage Ireg2 = 300 mA (1) - Vdrop (1) - - 0.6 V Regulator 1 Vo (REG 1) ΔV ΔVi Iq Im Output voltage 8.5 V Line regulation Regulator 2 Vo (ST BY) ΔV ΔVi Iq Line regulation Ireg2 = 100 mA Current limit Rshort = 0.5 Ω 400 - 800 mA Output voltage 5V - 4.75 5 5.25 V Vin2 = 7 to 18 V; I = 800 mA - - 50 mV Vin2 = 6 to 18 V; I = 10 mA - - 50 mV Load regulation Ireg3 = 1 to 800 mA - - 100 mV Quiescent current Ireg3 = 10 mA - - 5 mA PSRR Supply voltage ripple rejection f = 1 kHz; Vin1 = 1.5 Vpp; Io = 800 mA 50 - - dB Vdrop Drop out voltage Ireg3 = 800 mA (1) - - 1.5 V Current limit Rshort = 0.5 Ω 1 - 2 A Output voltage 3.3V - 3.10 3.3 3.50 V ΔV Line regulation Vin2 = 6 to 18 V; I = 800 mA - - 50 mV ΔV Line regulation Vin2 = 6 to 18 V; I = 10 mA - - 50 mV Im Regulator 3 Vo (REG 3) ΔV ΔVi Iq Im Line regulation Regulator 4 Vo (REG 4) Doc ID 14442 Rev 2 7/16 Electrical specifications Table 4. L5957 Electrical characteristics (continued) Symbol ΔVi Parameter Test condition Min. Typ. Max. Unit Load regulation Ireg4 = 1 to 800 mA - - 100 mV Quiescent current Ireg4 = 10 mA - - 5 mA PSRR Supply voltage ripple rejection f = 1 kHz; Vin1 = 1.5 Vpp; Io = 800 mA 48 - - dB Vdrop Drop out voltage Ireg4 = 800 mA (1) - - 2.65 V Current limit Rshort = 0.5 Ω 0.9 - 2 A Drop voltage power switch IdcSW = 1.8 A max. - - 0.5 V Peak time < 10 ms 2 - 3.5 A Peak time > 40 ms 1 - 2 A - 15 - 45 ms Iq Im Power switch VdropSW IpSW1 Peak current power switch IpSW2 SWDEL Delay Protection Reset buffer (with push-pull buffer) RES RES falling Vreg2 = 5 V 4.6 4.7 4.8 V RES RES rising Vreg2 = 5 V 4.65 4.8 4.95 V VHYS(RES) Hysteresis of reset buffer - 50 - 200 mV IHsource (RES) High level source current Reset = 0 V 1000 1300 1600 μA ILsink (RES) Low level sink current Reset = 5 V 14 16 18 mA RES delay Cres = 47nF - 10 - 60 ms Reset rise and fall time R = 10 kΩ - - 50 μs Charge current CRES = 0 V 3 5 10 μA IDischarge Discharge current CRES = 5 V 1 - 3 mA VTH(F) Falling voltage threshold - 1 1.2 1.4 V VTH(R) Rising voltage threshold - 2.5 2.8 3.5 V Vol Low level ISINK(RES) = 1 mA 0.3 0.5 V Voh High level - 4.5 Vreg2 5.5 V VlowI Hold output low for Vin1 low Low detection - - 9 V Vlowh Hold output high for Vin1 normal Normal high detection 10 - 18 V Vlowl Hold output low for Vin1 high low detection 22 - - V Low VIN1 threshold VIN1 Low TH. 9 9.5 10 V - 50 150 200 mV VIN1 High TH. 18 20 22 V - 50 150 250 mV ΔTRES ICharge C = 15 pF Hold signal VHOLD R VHYS (HOLD_L) Hysteresis low TH. VHOLD F High VIN1 threshold VHYS (HOLD_M) Hysteresis high TH. 8/16 Doc ID 14442 Rev 2 L5957 Table 4. Electrical specifications Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max. Unit Ignition buffer (push-pull with schmitt trigger) IGNIN IGNout falling - 1.03 1.17 1.28 V IGNIN IGNout rising - 1.18 1.27 1.33 V Hysteresis of ignition buffer - 30 50 100 mV IGNout = 0 V 1000 1500 2000 μA Low level sink current IGNout = 5 V 10 15 20 mA Vol Low level ILsink (IGNout) = 1 mA - 0.3 0.5 V Voh High level - 4.5 Vreg2 5.5 V IGNRISE Rising time C = 15 pF - - 10 μs IGNFALL Fall time C = 15 pF - - 10 μs ICLAMP Input clamp current VCC < VIGN < 50 V - - 2 mA IGNIN Input voltage Operative 0 - 50 V 1.3 - 2.3 V 0 - 5 V Vhys(IGNout) IHsource(IGNout) High level source current ILsink(IGNout) Enable input (regulators 1,3,4 and power switch) VTH Voltage threshold - ENIN Input voltage Operative 1. Drop condition means that the supply voltage drop down to 100 mV from the regulated output and the regulator is sourcing its maximal load current. Figure 3. Typical application circuit Vs VIN1 SW POWER SWITCH EN SW 22 µF 470 µF REG 1 REG1 100 nF Cfilt (*) REG 2 470 µF REG2 BU Cfilt (*) REG 3 VIN2 REG3 ENREG3 REG 4 10 KΩ Cfilt (*) REG4 ENREG1-4 Cfilt (*) HOLD to µProcessor THERMAL PROTECTION 10 KΩ K IGNIN DUMP LOAD PROTECTION RES RESET BUFFER CRES IGNITION BUFFER to µProcessor 47 nF 1 nF IGNOUT AC00427 (*) Recommended output filtering capacitors for all the regulators: C range = 5 µF to 100 µF, ESR range = 0.5 Ω to 10 Ω (T= -40 ˚C to +85 ˚C) Doc ID 14442 Rev 2 9/16 Electrical specifications Figure 4. L5957 Maximum ESR for stability valid for all the regulators outputs ESR [Ω] Maximum ESR 10 5 Stable region 1 Minimum ESR 0.5 5 10 100 C [µF] AC00591 Figure 5. Timing diagram of regulators and power switch DUMP VM VIN1=VIN2 9V 8.5V REG1(8.5V) 3.3V REG4(3.3V) ENREG1-4 5V REG3(5V) ENREG3 5V REG2(5V) VM POWER SWITCH 9V EN-SW D02AU1420A 18V ≤ VM ≤ 22V 10/16 Doc ID 14442 Rev 2 L5957 Electrical specifications Figure 6. Backup and reset diagram 14 5 4.8 4.7 VBATT BACKUP CAP. 5V PERM t 5 3 CDELAY t RESET D02AU1422 Figure 7. t Hold and thermal protection DUMP 9V 22 8.5V 5V 18 VIN1 HOLD 3.3V 9.5 5 ON T≅160 TEMPERATURE PROTECTION 8.5V REG1(8.5V) 5V REG2(5V) 5V REG3(5V) 3.3V REG4(3.3V) ENREG3 5V ENREG1-4 D02AU1423B Doc ID 14442 Rev 2 11/16 Electrical specifications Figure 8. L5957 Ignition buffer diagram 50V IGNITION INPUT 1.27V 1.17V IGNITION OUTPUT LOAD DUMP 14V VIN1 D02AU1424 Figure 9. Protection of the power switch VSW 16V DELAYED NOT DELAYED 1.5A 3A IN CASE VIN1 <16V D02AU1425 ISW Figure 10. Short circuit diagram SHORT TO GND REG1 SHORT TO GND REG2 SHORT TO GND REG3 SHORT TO GND REG4 SHORT TO GND SWITCH 12/16 Doc ID 14442 Rev 2 L5957 3 Package information 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® is an ST trademark. Figure 11. PowerSO20 (slug up) mechanical data and package dimensions DIM. A A2 A4 A5 a1 b c D (1) D1 D2 E E1 (1) E2 E3 e e3 G H h L N R S V mm TYP. MIN. 3.25 3 0.8 0.15 0.030 0.4 0.23 15.8 9.4 3.15 0.2 MAX. 3.5 3.3 1 0.25 -0.040 0.53 0.32 16 9.8 MIN. 0.128 0.118 0.031 0.006 0.0012 0.016 0.009 0.622 0.370 14.5 11.1 2.9 6.2 1.42 0.547 0.429 inch TYP. 0.124 0.008 1 13.9 10.9 5.8 1.12 1.27 11.43 0 15.5 OUTLINE AND MECHANICAL DATA 0.039 0.228 0.044 0.050 0.450 0.1 0 15.9 0.61 1.1 1.1 0.031 10¡ (max) 0.8 MAX. 0.138 0.130 0.039 0.010 -0.0016 0.021 0.012 0.630 0.385 0.570 0.437 0.114 0.244 0.056 0.004 0.625 0.043 0.043 0.6 0.024 0¡ (min.) 8¡ (max.) 5¡ (min.) 7¡ (max.) PowerSO20 (SLUG UP) (1) ÒD and E1Ódo not include mold flash or protusions. - Mold flash or protusions shall not exceed 0.15mm (0.006Ó) - Critical dimensions: ÒEÓ,Òa1Ó,ÒeÓ and ÒGÓ. N H N E3 A2 b R A4 A5 A c V e D2 (x2) DETAIL A e3 E2 E M h x 45û 1 10 DETAIL A E2 0.35 E1 Gage Plane a1 S L -CSEATING PLANE G 20 D1 C (COPLANARITY) 11 PSO20DME D 0088529 C Doc ID 14442 Rev 2 13/16 Package information L5957 Figure 12. Multiwatt15 (vertical) mechanical data and package dimensions DIM. mm MIN. TYP. inch MAX. MIN. TYP. A5 MAX. 0.197 B 2.65 C 1.6 D OUTLINE AND MECHANICAL DATA 0.104 0.063 1 0.039 E 0.49 0.55 0.019 F 0.66 0.75 0.026 0.022 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.030 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.65 18.1 0.695 L3 17.25 17.5 17.75 0.679 0.689 L4 10.3 10.7 10.9 0.406 0.421 L7 2.65 2.9 0.104 0.713 0.699 0.429 0.114 M 4.25 4.55 4.85 0.167 0.179 0.191 M1 4.73 5.08 5.43 0.186 0.200 0.214 S 1.9 2.6 0.075 0.102 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 Multiwatt15 (ver tical) 0016036 J 14/16 Doc ID 14442 Rev 2 L5957 4 Revision history Revision history Table 5. Document revision history Date Revision Changes 11-Feb-2008 1 Initial release. 08-Jan-2010 2 Updated Section 1: Block and pins connection diagrams on page 5. Updated Figure 3, 5 and 6. 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