R1211X Datasheet, PDF (2/33 Pages) RICOH electronics devices division – Step-up DC/DC Controller

s BLOCK DIAGRAMS
Version A
VFB
AMPOUT
OSC
DTC
Vref
UVLO
Version B
VFB
OSC
DTC
Vref
CE
Chip
Enable
UVLO
EXT
VIN
GND
Latch
DELAY
EXT
VIN
GND
Latch
DELAY
Rev. 1.10
-2-