September 2013 Doc ID 17716 Rev 2 1/20
1
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.
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.
Flexiwatt27
(vertical)
Flexiwatt27
(SMD)
Table 1. Device summary
Order code Package Packing
L5958 Flexiwatt27 (vertical) Tube
L5958SM Flexiwatt27 (SMD) Tube
L5958SMTR Flexiwatt27 (SMD) Tape and reel
www.st.com
