BU33DV7NUX Datasheet, PDF (18/27 Pages) Rohm – 1.8V to 5.5V, 300mA 1ch Synchronous Boost DC/DC Converter

BU33DV7NUX
●Notes
- Load Current 300mA (max)
Timing of possible Load 300mA (max) is dueling RSTBO “H”.
ch2:EN 2.0V/di v
ch1:VOUT 500mV/di v
300mA (max)
Datasheet
ch4:Icoi l 200mA/d i v
ch3:RSTBO 1.0V/di v
Figure 46. Load Current 300mA timing
-EN: ON<=>OFF PFM (MODE=VIN)
VIN connect to VOUT at Rswp2 MODE=VIN. Please note Drop of VOUT.
EN
VOUT
dv/dt = -Iout/Cout
Vout = 3.3×（1-EXP(-t/τ))
VOUT = VIN - (Iout x Rswp2)
Thru Mode
VOUT Drop
Soft Start
t = time
EN:500mV/Div
VOUT:500mV/Div
Vout Drop
Thru Mode Soft Start
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TSZ22111・15・001
Figure 47. EN : L=>H PFM Io=5mA
VIN=3.6V
18/24
TSZ02201-0Q1Q0AH00110-1-2
02.Aug.2012 Rev.001