Datasheet Analog Devices LT1934IDCB#TRMPBF — Ficha de datos

LT1934/LT1934-1
Micropower Step-Down
Switching Regulators
in ThinSOT and DFN
FEATURES DESCRIPTION n The LT ®1934 is a micropower step-down DC/DC converter
with internal 400mA power switch, packaged in a low
profile (1mm) ThinSOT. With its wide input range of 3.2V
to 34V, the LT1934 can regulate a wide variety of power
sources, from 4-cell alkaline batteries and 5V logic rails
to unregulated wall transformers and lead-acid batteries.
Quiescent current is just 12μA and a zero current shutdown mode disconnects the load from the input source,
simplifying power management in battery-powered systems. Burst Mode® operation and the low drop internal
power switch result in high efficiency over a broad range
of load current. Wide Input Voltage Range: 3.2V to 34V
Micropower Operation: IQ = 12μA
5V at 250mA from 6.5V to 34V Input (LT1934)
5V at 60mA from 6.5V to 34V Input (LT1934-1)
3.3V at 250mA from 4.5V to 34V Input (LT1934)
3.3V at 60mA from 4.5V to 34V Input (LT1934-1)
Low Shutdown Current: 1V
VFB = 0V Maximum Duty Cycle VFB = 1V Switch VCESAT ISW = 300mA (LT1934, S6 Package)
ISW = 300mA (LT1934, DCB Package)
ISW = 75mA (LT1934-1, S6 Package) …