L5962 Datasheet, PDF (1/24 Pages) STMicroelectronics – Multiple linear/switching voltage regulator for car-radio

L5962
Multiple linear/switching voltage regulator for car-radio
Features
■ Step-down synchronous switching voltage
regulator
– Internal high-side/ Low-side NDMOS
– 1.2 < V_out < 8 V selectable through external
resistors
– 1.2/2.5 A load current selected through
dedicated pin
– 185 kHz free-run frequency
– SYNC function (220 < f_sw < 400 kHz)
■ Linear regulators
– 3.3/5 V @ 150 mA standby regulator
selected through dedicated pin
(VSTBYSEL)
– 5/8.5 V @ 350 mA switched linear regulator
enabled and selected through I²C bus
(VLR1)
– 3.3/10 V @ 1 A switched linear regulator
enabled and selected through I²C bus
(VLR2)
■ 2 High side drivers (0.5 V max drop @ 0.5 A)
enabled through I²C bus and equipped with
protection circuit against:
– short to ground and battery
– loss of ground and battery
– unsupplied short to battery
■ Reset function with configurable delay (RST,
RSTDLY)
■ I²C bus
PowerSO36 (slug-up)
■ Enable pin to drive switching regulator and I²C
bus logic
■ Under/over voltage battery detector
(VBATVW)
– Under voltage threshold adjustable through
dedicated pin (LVWIN)
■ Load dump protection
■ Independent thermal protection on all
regulators
Description
L5962 is a very versatile device exploiting BCD
technology characteristics to provide a complete
set of regulated voltages covering all the needs of
a car-radio set.
In standby condition the device guarantees
extremely low quiescent current (90 µA max -
40 °C < T < 85 °C) and minimum operating
voltage (4.5 V using an external Schottky diode
for the back-up function).
Table 1.
Device summary
Order code
L5962
L5962TR
Package
PowerSO36
PowerSO36
Packing
Tray
Tape and reel
December 2009
Doc ID 16819 Rev 2
1/24
www.st.com
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