L5956PDTR

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 Device summary Order code Package 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. Table 1. Packing Tube Tube Tape and reel L5956 L5956PD L5956PDTR Multiwatt-15 (vertical) PowerSO-20 PowerSO-20 August 2007 Rev 1 1/16 www.st.com 1 Contents L5956 Contents 1 Block diagram and pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 1.2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 2.2 2.3 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 4 5 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 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. 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 4/16 L5956 Block diagram and pins description 1 1.1 Figure 1. Block diagram and pins description Block diagram Block diagram VINI (MAIN) EN_SW REG1 EN 1_3(8.5V_5V) REG2 BU VIN2 REG3 REG 3(5V) REG 2(PERM)(5V) REG 1(8.5V) POWER SWITCH SW REG4 EN 4(3.3V) REG 4(3.3V) HOLD THERMAL PROTECTION DUMP LOAD PROTECTION RESET BUFFER RES CRES IGNIN IGNITION BUFFER IGNOUT D02AU1342 1.2 Figure 2. Pins description Pins connection (top view) 15 14 VIN2 REG3(5V) N.C. REG1(8.5V) SW N.C. VIN1 BU REG2(5V) HEATSINK 20 19 18 17 16 15 14 13 12 11 D02AU1343 VIN2 REG3 REG1 SWITCH BU REG2 VIN1 GND HOLD EN SW EN REG1,3 EN REG4 CRES RES REG4 D03AU1513 1 2 3 4 5 6 7 8 9 10 REG4(3.3V) IGNIN IGNOUT RES CRES ENREG4(3.3V) ENREG1_3(8.5V_5V) EN_SW HOLD GND 13 12 11 10 9 8 7 6 5 4 3 2 1 PowerSO Multiwatt 5/16 Electrical specifications L5956 2 2.1 Electrical specifications Absolute maximum ratings Table 2. Symbol VSDC VSTR IO Top Tstg Tj Pd Absolute maximum ratings Parameter DC operating supply voltage Transient supply voltage Output current Operating temperature range Storage temperature Junction temperature Power dissipation at Tcase = 85°C Value 30 50 internally limited -40 to 85 -55 to 150 -55 to 150 43 °C °C °C W Unit V V 2.2 Thermal data Table 3. Symbol Rth j-case Thermal data Parameter Thermal resistance junction to case Max. PowerSO Multiwatt 1.5 1.8 Unit °C/W 2.3 Table 4. Symbol Electrical characteristics Electrical characteristics (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Parameter Test condition Min. Typ. Max. Unit INPUT SUPPLIES Vin1 Vin2 Vin1 Vin2 Input supply voltage 1 Input supply voltage 2 Input supply voltage 1 Input supply voltage 2 Operating Operating Reverse polarity Reverse polarity Stand-by (-20°C to 85°C) IGNIN = 5V Iq Total quiescent current REGx = 5V, REGsw = 5V, IGNIN = 5V Stand-by (-20°C to 85°C) IGNIN = 5V, VCC = 18V Load dump Vin1 Battery overvoltage Vin1 18 5 100 20 170 22 9 6 18 18 non operating non operating 60 µA mA µA V V V 6/16 L5956 Table 4. Symbol Load dump Vin2 REGULATOR 1 Vo (REG 1) ΔV ΔV ΔVi Iq PSRR Vdrop Im REGULATOR 2 Vo (ST BY) ΔV ΔV ΔVi Iq PSRR Vdrop Vdrop Im REGULATOR 3 Vo (REG 3) ΔV ΔV ΔVi Iq PSRR Vdrop Im Output voltage 5V Line regulation Line regulation Load regulation Quiescent current Supply voltage ripple rejection Drop out voltage Current limit Vin2 = 7 to 18V; I = 800mA Vin2 = 6 to 18V; I = 10mA Ireg3 = 1 to 800mA Ireg3 = 10mA f = 1KHz; Vin1 = 1.5Vpp; Io = 800mA Ireg3 = 800mA (1) Rshort = 0.5Ω 1 50 4.75 Output voltage 5V Line regulation Line regulation Load regulation Quiescent current Supply voltage ripple rejection Drop out voltage Drop out voltage Current limit Vin1 = 7 to 18V; I = 300mA Vin1 = 6 to 18V; I = 10mA Ireg2 = 1 to 300mA Ireg2 = 10mA f = 1KHz; Vin1 = 1.5Vpp; Io = 300mA Ireg2 = 300mA (1) Ireg2 = 100mA (1) Rshort = 0.5Ω 400 50 4.75 Output voltage 8.5V Line regulation Line regulation Load regulation Quiescent current Supply voltage ripple rejection Drop out voltage Current limit Vin1 = 10 to 18V; I = 500mA Vin1 = 9.3 to 18V; I = 10mA Ireg1 = 1 to 500mA Ireg1 = 10mA f = 1KHz; Vin1 = 1.5Vpp; Io = 500mA Ireg1 = 500mA (1) Rshort = 0.5Ω 0.6 50 8 Electrical specifications Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Parameter Battery overvoltage Vin2 Test condition Min. 18 Typ. 20 Max. 22 Unit V 8.5 9 50 50 100 5 V mV mV mV mA dB 0.6 1.2 V A 5 5.25 50 50 100 3 V mV mV mV mA dB 1.5 0.6 800 V V mA 5 5.25 50 50 100 5 V mV mV mV mA dB 1.5 2 V A 7/16 Electrical specifications Table 4. Symbol REGULATOR 4 Vo (REG 4) ΔV ΔV ΔVi Iq PSRR Vdrop Im Output voltage 3.3V Line regulation Line regulation Load regulation Quiescent current Supply voltage ripple rejection Drop out voltage Current limit Vin2 = 6 to 18V; I = 800mA Vin2 = 6 to 18V; I = 10mA Ireg4 = 1 to 800mA Ireg4 = 10mA f = 1KHz; Vin1 = 1.5Vpp; Io = 800mA Ireg4 = 800mA(1) Rshort = 0.5Ω 1 50 2.5 2 3.15 3.3 3.45 50 50 100 5 L5956 Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Parameter Test condition Min. Typ. Max. Unit V mV mV mV mA dB V A POWER SWITCH VdropSW IpSW1 IpSW2 SWDEL Drop voltage power switch Peak current power switch Peak current power switch Delay protection IdcSW = 1.8A max. Peak time < 15ms Peak time > 40ms 2 1 15 0.5 3.5 2 40 V A A ms RESET BUFFER (with push-pull buffer) RES RES VHYS(RES) IHsource (RES) ILsink (RES) RES delay ΔTRES ICharge IDischarge VTH(F) VTH(R) Vol Voh HOLD SIGNAL VlowI Vlowh Vlowl VHOLD R Hold output low for Vin1 low Hold output high for Vin1 normal Hold output low for Vin1 high Low VIN1 threshold Low detection Normal high detection low detection VIN1 Low TH. 10 22 9 50 9.5 150 10 200 9 18 V V V V mV RES falling RES rising Hysteresis of reset buffer High level source current Low level sink current Cres = 47nF Reset rise and fall time Charge current Discharge current Falling voltage threshold Rising voltage threshold Low level High level ISINK(RES) = 1mA 4.5 R = 10kΩ CRES = 0V CRES = 5V C = 15pF 3 1 1 2.5 1.2 2.8 0.3 Vreg2 5 Reset = 0V Reset = 5V Vreg2 = 5V Vreg2 = 5V 4.6 4.65 50 1000 14 10 4.7 4.8 100 1300 16 4.8 4.95 200 1600 18 60 50 10 3 1.4 3.5 0.5 5.5 V V mV µA mA ms µs µA mA V V V V VHYS (HOLD_L) Hysteresis low TH. 8/16 L5956 Table 4. Symbol VHOLD F Electrical specifications Electrical characteristics (continued) (VS = 14.4V; Tamb = 25°C; unless otherwise specified) Parameter High VIN1 threshold Test condition VIN1 High TH. Min. 18 200 Typ. 20 Max. 22 500 Unit V mV VHYS (HOLD_M) Hysteresis high TH. IGNITION BUFFER (push-pull with Schmidt trigger) IGNIN IGNIN Vhys(IGNout) ILsink(IGNout) Vol Voh IGNRISE IGNFALL ICLAMP IGNIN IGNout falling IGNout rising Hysteresis of ignition buffer IGNout = 0V IGNout = 5V ILsink (IGNout) = 1mA 1.03 1.18 1.17 1.27 50 1.28 1.33 V V mV IHsource(IGNout) High level source current Low level sink current Low level High level Rising time Fall time Input clamp current Input voltage 1000 10 1500 15 0.3 2000 20 0.5 5.5 10 10 2 µA mA V V µs µs mA V 4.5 C = 15pF C = 15pF VCC < VIGN < 50V Operative 0 Vreg2 50 ENABLE INPUT (regulators 1,3,4 and power switch) VTH ENIN Voltage threshold Input voltage Operative 1.3 0 1.8 2.3 5 V V 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 EN SW POWER SWITCH SW 22 µF REG 1 100 nF REG1 EN 1 REG 2 470 µF BU VIN2 REG2 Cfilt (*) REG 3 REG3 REG 4 EN 4 REG4 HOLD to µProcessor THERMAL PROTECTION 10 KΩ DUMP LOAD PROTECTION RESET BUFFER IGNITION BUFFER Cfilt (*) 10 KΩ Cfilt (*) Cfilt (*) 470 µF RES CRES to µProcessor 47 nF IGNIN 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 L5956 3 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 VBATT 5 4.8 4.7 5V PERM BACKUP CAP. t 5 3 CDELAY RESET t D02AU1422 t 10/16 L5956 Figure 6. Hold and thermal protection DUMP 9.5V 22 18 VIN1 9 8.5V 5V 3.3V Timing diagrams HOLD 5 ON TEMPERATURE PROTECTION 8.5V REG1(8.5V) T≅ 160 5V REG2(5V) 5V REG3(5V) 3.3V REG4(3.3V) EN1-3 EN4 5V 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 NOT DELAYED IN CASE VIN1