Description
L4954 is a quad output voltage regulator and a three output high side driver.
FEATUREs
■ 4 regulators:
– 10 V (40 mA) low dropout
– 8.5 V (175 mA)
– 5 V (650 mA)
– 5 V (100 mA) standby
■ 3 high side drivers:
– 2 A (HSD1)
– 0.3 A (HSD2 & HSD3)
■ No external charge pump capacitors are required
■ Standby mode controlled by 3 input pins:
– EN1 for REG1, REG2, REG3 and HSD1
– EN2 for HSD2
– EN3 for HSD3
■ Individual thermal shutdown
■ Logic outputs for supply undervoltage:
– LVWARN
– Reset
■ Independent current limiting
■ Overvoltage shutdown
■ Short circuit protection
■ Load dump protection and overvoltage
■ Shutdown