PDF L5958 Data sheet ( Hoja de datos )

Número de pieza	L5958
Descripción	Multifunction voltage regulator
Fabricantes	STMicroelectronics
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No Preview Available ! www.DataSheet4U.com L5958 Multifunction voltage regulator for car radio Features ■ L5958 six outputs: – 8.5 V @ 200 mA – 5.0 V @ 300 mA – 3.3 V @ 250 mA – 1.8 V @ 350 mA – 3.3 V @ 100 mA standby – 1.8 V @ 100 mA standby ■ 2 A high side driver ■ Reset function ■ VDD core reset function ■ Battery audio warning ■ Battery can warning ■ Ignition comparator ■ Load dump protection ■ Thermal shutdown ■ Overcurrent limitation ■ All pin ESD protected Description The L5958 includes 6 linear voltage regulators and a 2 A power switch, working down to 4.5 V battery level. All the voltage regulators can be switched off through the three enable pins. Flexiwatt27 (vertical) Flexiwatt27 (SMD) The two 3.3 V (REG5) and 1.8 V (REG6) stand-by regulators can reach a quasi-zero current consumption when switched off. The device is equipped with two different reset buffers to control the operating voltages: the reset which checks the two stand-by outputs, 3.3V and 1.8 V, and the VDD core reset which checks the linear switched outputs, 3.3 V and 1.8 V. It is also equipped with two different battery voltage warnings, provided by the Hold CAN and the Hold audio detectors, with the possibility to program the lower threshold through an external resistance. The ignition buffer completes the device. A backup function is available through two pins which needs to be connected to two independent capacitors: one for the 3.3 V and 1.8 V linear switched outputs and one for the 3.3 V and 1.8 V standby outputs. Table 1. Device summary Order code L5958 L5958SM L5958SMTR Package Flexiwatt27 (vertical) Flexiwatt27 (SMD) Flexiwatt27 (SMD) Packing Tube Tube Tape and reel July 2010 Doc ID 17716 Rev 1 1/20 www.st.com 1 1 page L5958 1 Block diagram www.DataSheet4U.com Block diagram Figure 1. Block diagram VIN1 EN_SW EN_3P3P -1P8P BU1 POWER SWITCH 1.8V perm REGULATOR Vref 3.3V perm REGULATOR BU2 EN_3P3SW_1P8SW 1.8V REGULATOR V IN2 EN_8P5SW_5PSW 3.3V REGULATOR 5V REGULATOR 8.5V REGULATOR RES BUF SW REG6 CRES RES REG5 REG4 VDD CORE REG3 REG2 REG1 IGNIN <5.37V >18.55V <8.65V >16.55V LOAD DUMP PRE WARN IGNOUT CAN_PRETEMP AUDIO_LOW_OUT AUDIO_HIGH_OUT AC00175 Doc ID 17716 Rev 1 5/20 5 Page L5958 www.DataSheet4U.com Electrical specifications Table 5. Electrical characteristics (continued) Symbol Parameter Test condition Min. Typ. Max. Unit VDD_CORE_VAL buffer (open drain RESET for switched regulators) RESreg3 Vhys_reg3 RES threshold voltage for reg3 Vreg3 = 3.3 V Hysteresis of reset for reg3 - RESreg4 RES threshold voltage for reg4 Vreg4 = 1.8 V Vhys_reg4 Hysteresis of reset for reg4 - Vol Low level ISINK(RES) = 1 mA Hold CAN signal (open drain for VIN1 battery warning 1) 3.00 3.15 3.25 V 10 50 100 mV 1.67 - 1.833 V 10 20 40 mV - 0.3 0.5 V Hold1_high Hold high threshold - VHYS Hold1_low Hysteresis high TH. Hold low threshold - - VHYS Vol VREF Hysteresis low TH. Low level Reference voltage - ISINK(RES) = 1 mA - Hold audio signal (open drain for VIN1 battery warning 2) 17 - 20 150 400 600 5-6 200 400 600 - 0.3 0.5 - 1.2565 - V mV V mV V V Hold2_high Hold high threshold VHYS Hold2_low Hysteresis high TH. Hold low threshold VHYS Vol VREF Hysteresis low TH. Low level Reference voltage Ignition buffer (open drain) - - - - ISINK(RES) = 1 mA - 15.2 - 17.8 150 400 600 7.8 - 9.2 200 400 600 - 0.3 0.5 - 1.2565 - V mV V mV V V IGNIN Vhys(IGNout) Vol IGNRISE IGNFALL ICLAMP IGNIN IGNout falling Hysteresis of ignition buffer Low level Rising time Fall time Input clamp current Input voltage - - ILsink (IGNout) = 1 mA C = 15 pF C = 15 pF VCC < VIGN < 50 V Operative Enable input (regulators 1,2,3,4,5,6 and power switch) 1.03 1.17 1.28 30 50 100 - 0.3 0.5 - - 10 - - 10 - -2 0 - 50 V mV V µs µs mA V VTH Voltage threshold - 1.3 - 2.3 V ENIN(reg1,2,3,4 Input voltage power switch) Operative 0 - 5V ENIN(reg5,6) Input voltage Operative 0 - 24 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 Doc ID 17716 Rev 1 11/20 11 Page

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