L5956 Multifunction voltage regulator for car radio Features ■ Four outputs: – 8.5V @ 500mA – 5V @ 300mA Permanent – 5V @ 800mA – 3.3V @ 800mA ■ 2A high side driver ■ Reset function ■ Ignition comparator ■ Load dump protection ■ Thermal shutdown ■ Overcurrent limitation ■ All pins ESD protected Table 1. PowerSO20 (slug-up) Multiwatt15 (vertical) 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 stand-by. Device summary Order code Package Packing L5956 Multiwatt-15 (vertical) Tube L5956PD PowerSO-20 Tube L5956PDTR PowerSO-20 Tape and reel August 2007 Rev 1 1/16 www.st.com 1 Contents L5956 Contents 1 2 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 L5956 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 3/16 List of figures L5956 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. 4/16 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Timing diagram of regulators and power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Short circuit diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 PowerSO20 (slug-up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13 Multiwatt 15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 14 L5956 Block diagram and pins description 1 Block diagram and pins description 1.1 Block diagram 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) EN 1_3(8.5V_5V) BU VIN2 EN 4(3.3V) HOLD THERMAL PROTECTION DUMP LOAD PROTECTION RESET BUFFER RES CRES IGNITION BUFFER IGNIN IGNOUT 1.2 Pins description Figure 2. Pins connection (top view) D02AU1342 15 VIN2 14 REG3 REG1 20 1 REG4(3.3V) 13 REG3(5V) 19 2 IGNIN 12 SWITCH N.C. 18 3 IGNOUT 11 BU REG1(8.5V) 17 4 RES 10 REG2 SW 16 5 CRES 9 VIN1 N.C. ENREG4(3.3V) GND 15 6 8 7 HOLD VIN1 14 7 ENREG1_3(8.5V_5V) 6 EN SW BU 13 8 EN_SW 5 EN REG1,3 REG2(5V) 12 9 HOLD 4 EN REG4 HEATSINK 11 10 GND 3 CRES 2 RES 1 REG4 VIN2 D02AU1343 PowerSO D03AU1513 Multiwatt 5/16 Electrical specifications L5956 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 at Tcase = 85°C 43 W PowerSO Multiwatt Unit Thermal data Table 3. Thermal data Symbol Rth j-case Parameter Thermal resistance junction to case 2.3 Electrical characteristics Table 4. Electrical characteristics (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Symbol Parameter Test condition Max. 1.5 Min. 1.8 Typ. °C/W Max. Unit INPUT SUPPLIES Vin1 Input supply voltage 1 Operating 9 18 V Vin2 Input supply voltage 2 Operating 6 18 V Vin1 Input supply voltage 1 Reverse polarity non operating Vin2 Input supply voltage 2 Reverse polarity non operating Stand-by (-20°C to 85°C) IGNIN = 5V Iq Load dump Vin1 6/16 Total quiescent current Battery overvoltage 60 µA REGx = 5V, REGsw = 5V, IGNIN = 5V 5 Stand-by (-20°C to 85°C) IGNIN = 5V, VCC = 18V 100 170 µA 20 22 V Vin1 18 mA L5956 Electrical specifications Table 4. Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Symbol Load dump Vin2 Parameter Battery overvoltage Test condition Vin2 Min. Typ. Max. Unit 18 20 22 V 8 8.5 9 V REGULATOR 1 Vo (REG 1) Output voltage 8.5V ΔV Line regulation Vin1 = 10 to 18V; I = 500mA 50 mV ΔV Line regulation Vin1 = 9.3 to 18V; I = 10mA 50 mV ΔVi Load regulation Ireg1 = 1 to 500mA 100 mV Quiescent current Ireg1 = 10mA 5 mA PSRR Supply voltage ripple rejection f = 1KHz; Vin1 = 1.5Vpp; Io = 500mA Vdrop Drop out voltage Ireg1 = 500mA (1) Current limit Rshort = 0.5Ω Iq Im 50 dB 0.6 0.6 V 1.2 A 5.25 V REGULATOR 2 Vo (ST BY) Output voltage 5V 4.75 5 ΔV Line regulation Vin1 = 7 to 18V; I = 300mA 50 mV ΔV Line regulation Vin1 = 6 to 18V; I = 10mA 50 mV ΔVi Load regulation Ireg2 = 1 to 300mA 100 mV Quiescent current Ireg2 = 10mA 3 mA PSRR Supply voltage ripple rejection f = 1KHz; Vin1 = 1.5Vpp; Io = 300mA Vdrop Drop out voltage Ireg2 = 300mA (1) 1.5 V Vdrop Drop out voltage Ireg2 = 100mA (1) 0.6 V Current limit Rshort = 0.5Ω 800 mA 5.25 V Iq Im 50 dB 400 REGULATOR 3 Vo (REG 3) Output voltage 5V 4.75 5 ΔV Line regulation Vin2 = 7 to 18V; I = 800mA 50 mV ΔV Line regulation Vin2 = 6 to 18V; I = 10mA 50 mV ΔVi Load regulation Ireg3 = 1 to 800mA 100 mV Quiescent current Ireg3 = 10mA 5 mA PSRR Supply voltage ripple rejection f = 1KHz; Vin1 = 1.5Vpp; Io = 800mA Vdrop Drop out voltage Ireg3 = 800mA (1) Current limit Rshort = 0.5Ω Iq Im 50 1 dB 1.5 V 2 A 7/16 Electrical specifications Table 4. L5956 Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Symbol Parameter Test condition Min. Typ. Max. Unit 3.15 3.3 3.45 V REGULATOR 4 Vo (REG 4) Output voltage 3.3V ΔV Line regulation Vin2 = 6 to 18V; I = 800mA 50 mV ΔV Line regulation Vin2 = 6 to 18V; I = 10mA 50 mV ΔVi Load regulation Ireg4 = 1 to 800mA 100 mV Quiescent current Ireg4 = 10mA 5 mA PSRR Supply voltage ripple rejection f = 1KHz; Vin1 = 1.5Vpp; Io = 800mA Vdrop Drop out voltage Ireg4 = 800mA(1) Current limit Rshort = 0.5Ω Iq Im 50 dB 1 2.5 V 2 A 0.5 V POWER SWITCH VdropSW Drop voltage power switch IdcSW = 1.8A max. IpSW1 Peak current power switch Peak time < 15ms 2 3.5 A IpSW2 Peak current power switch Peak time > 40ms 1 2 A SWDEL Delay protection 15 40 ms RESET BUFFER (with push-pull buffer) RES RES falling Vreg2 = 5V 4.6 4.7 4.8 V RES RES rising Vreg2 = 5V 4.65 4.8 4.95 V 50 100 200 mV VHYS(RES) Hysteresis of reset buffer IHsource (RES) High level source current Reset = 0V 1000 1300 1600 µA ILsink (RES) Low level sink current Reset = 5V 14 16 18 mA RES delay Cres = 47nF 60 ms 50 µs 10 µA 3 mA ΔTRES 10 Reset rise and fall time R = 10kΩ Charge current CRES = 0V 3 IDischarge Discharge current CRES = 5V 1 VTH(F) Falling voltage threshold 1 1.2 1.4 V VTH(R) Rising voltage threshold 2.5 2.8 3.5 V 0.3 0.5 V Vreg2 5.5 V 9 V 18 V ICharge Vol Low level Voh High level C = 15pF ISINK(RES) = 1mA 4.5 5 HOLD SIGNAL VlowI Hold output low for Vin1 low Low detection Vlowh Hold output high for Vin1 normal Normal high detection 10 Vlowl Hold output low for Vin1 high low detection 22 Low VIN1 threshold VIN1 Low TH. 9 9.5 10 V 50 150 200 mV VHOLD R VHYS (HOLD_L) Hysteresis low TH. 8/16 V L5956 Table 4. Electrical specifications Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Symbol Parameter VHOLD F Test condition High VIN1 threshold VIN1 High TH. VHYS (HOLD_M) Hysteresis high TH. Min. Typ. Max. Unit 18 20 22 V 500 mV 200 IGNITION BUFFER (push-pull with Schmidt trigger) IGNIN IGNout falling 1.03 1.17 1.28 V IGNIN IGNout rising 1.18 1.27 1.33 V Vhys(IGNout) Hysteresis of ignition buffer 50 IHsource(IGNout) High level source current mV IGNout = 0V 1000 1500 2000 µA Low level sink current IGNout = 5V 10 15 20 mA Vol Low level ILsink (IGNout) = 1mA 0.3 0.5 V Voh High level Vreg2 5.5 V ILsink(IGNout) 4.5 IGNRISE Rising time C = 15pF 10 µs IGNFALL Fall time C = 15pF 10 µs ICLAMP Input clamp current VCC < VIGN < 50V 2 mA IGNIN Input voltage Operative 50 V 2.3 V 5 V 0 ENABLE INPUT (regulators 1,3,4 and power switch) VTH Voltage threshold ENIN Input voltage 1.3 Operative 1.8 0 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 EN 1 Cfilt (*) REG 2 470 µF REG2 BU Cfilt (*) REG 3 VIN2 REG3 REG 4 10 KΩ Cfilt (*) REG4 EN 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: C range = 5 µF to 100 µF, ESR range= 0.5 Ω to 10 Ω (T= -40 ˚C to +85 ˚C) 9/16 Timing diagrams 3 L5956 Timing diagrams Figure 4. Timing diagram of regulators and power switch DUMP VM VIN1=VIN2 9V 8.5V REG1(8.5V) 5V REG3(5V) EN1-3 3.3V REG4(3.3V) EN4 5V REG2(5V) VM POWER SWITCH 9V EN-SW D02AU1420B 18V < VM ≤ 22V Figure 5. Backup and reset diagram 14 5 4.8 4.7 VBATT 5V PERM BACKUP CAP. t 5 3 CDELAY t RESET D02AU1422 10/16 t L5956 Timing diagrams Figure 6. Hold and thermal protection DUMP 9.5V 22 18 VIN1 8.5V 5V 3.3V 9 5 HOLD ON T≅160 TEMPERATURE PROTECTION 8.5V REG1(8.5V) 5V REG2(5V) 5V REG3(5V) 3.3V REG4(3.3V) 5V EN1-3 EN4 D02AU1423A Figure 7. Ignition buffer diagram 50V IGNITION INPUT 1.27V 1.17V IGNITION OUTPUT LOAD DUMP 14V VIN1 D02AU1424 Figure 8. Protection of the power switch VSW 16V DELAYED 1.5A NOT DELAYED 3A IN CASE VIN1 <16V D02AU1425 ISW 11/16 Timing diagrams Figure 9. L5956 Short circuit diagram SHORT TO GND REG1 SHORT TO GND REG2 SHORT TO GND REG3 SHORT TO GND REG4 SHORT TO GND SWITCH HOLD 12/16 L5956 4 Package information Package information In order to meet environmental requirements, ST offers this device in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 10. 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. MAX. 0.138 0.124 0.130 0.039 0.008 0.010 -0.0016 0.021 0.012 0.630 0.385 0.039 0.570 0.437 0.114 0.244 0.050 0.056 0.450 0.004 0.625 0.043 0.043 1 13.9 10.9 5.8 1.12 1.27 11.43 0 15.5 0.228 0.044 0.1 0 15.9 0.61 1.1 1.1 0.031 10¡ (max) 0.8 0.6 OUTLINE AND MECHANICAL DATA 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 E1 0.35 Gage Plane a1 S L -CSEATING PLANE G 20 D1 C (COPLANARITY) 11 PSO20DME D 0088529 C 13/16 Package information L5956 Figure 11. Multiwatt 15 (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 0.022 F 0.66 0.75 0.026 0.030 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 0.772 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 0.699 L4 10.3 10.7 10.9 0.406 0.421 0.429 0.191 0.713 L7 2.65 2.9 0.104 M 4.25 4.55 4.85 0.167 0.179 0.114 M1 4.73 5.08 5.43 0.186 0.200 S 1.9 2.6 0.075 0.102 0.214 S1 1.9 2.6 0.075 0.102 Dia1 3.65 3.85 0.144 0.152 Multiwatt15 (Vertical) 0016036 J 14/16 L5956 5 Revision history Revision history Table 5. Document revision history Date Revision 29-Aug-2007 1 Changes Initial release. 15/16 L5956 Please Read Carefully: Information in this document is provided solely in connection with ST products. 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