L5958SMTR STMicroelectronics

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 Flexiwatt27 Flexiwatt27 1.8 V 350 mA (vertical) (SMD) 3.3 V 100 mA standby 1.8 V 100 mA standby 2 A high side driver The two 3.3 V (REG5) and 1.8 V (REG6) stand-by regulators can reach a quasi-zero current Reset function consumption when switched off. VDD core reset function The device is equipped with two different reset Battery audio warning buffers to control the operating voltages: the reset Battery can warning which checks the two stand-by outputs, 3.3V and Ignition comparator 1.8 V, and the VDD core reset which checks the linear switched outputs, 3.3 V and 1.8 V. It is also Load dump protection equipped with two different battery voltage Thermal shutdown warnings, provided by the Hold CAN and the Hold Overcurrent limitation audio detectors, with the possibility to program the lower threshold through an external All pin ESD protected resistance. The ignition buffer completes the device. Description A backup function is available through two pins The L5958 includes 6 linear voltage regulators which needs to be connected to two independent and a 2 A power switch, working down to 4.5 V capacitors: one for the 3.3 V and 1.8 V linear battery level. All the voltage regulators can be switched outputs and one for the 3.3 V and 1.8 V switched off through the three enable pins. standby outputs. Table 1. Device summary Order code Package Packing L5958 Flexiwatt27 (vertical) Tube L5958SM Flexiwatt27 (SMD) Tube L5958SMTR Flexiwatt27 (SMD) Tape and reel September 2013 Doc ID 17716 Rev 2 1/20 www.st.com 1Contents L5958 Contents 1 Block diagram 5 2 Pin description . 6 3 Electrical specifications 8 3.1 Absolute maximum ratings . 8 3.2 Thermal data . 8 3.3 Electrical characteristics . 8 3.4 Application diagram . 12 3.5 Timing diagrams 14 4 Package information 17 5 Revision history . 19 2/20 Doc ID 17716 Rev 2