Datasheet Analog Devices LT3470HDDB#WTRMPBF — 数据表

LT3470
Micropower Buck Regulator
with Integrated Boost and
Catch Diodes
DESCRIPTION FEATURES Low Quiescent Current: 26µA at 12VIN to 3.3VOUT
n Integrated Boost and Catch Diodes
n Input Range: 4V to 40V
n Low Output Ripple: 3V
5 50
0
–50 –25 125 BIAS Quiescent Current
(Bias > 3V) vs Temperature 50 300 100 3470 G03 350 200 0
25
50
75
TEMPERATURE (°C) 3470 G02 Top and Bottom Switch Current
Limits (VFB = 0V) vs Temperature 250 –25 0 25 50 75 100 125 150
TEMPERATURE (°C) 3470 G04 3470 G05 0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
3470 G06 Rev. E 4 For more information www.analog.com LT3470
TYPICAL PERFORMANCE CHARACTERISTICS
FB Bias Current (VFB = 1V) …