MAX1565 Datasheet, PDF (13/26 Pages) Maxim Integrated Products – Small, High-Efficiency, Five-Channel Digital Still Camera Power Supply

Small, High-Efficiency, Five-Channel
Digital Still Camera Power Supply
V_OUTSU
2.35V
ONSU
VREF
1V
ONSU
INTERNAL
POWER
OK
NORMAL
MODE
REFOK
DIE OVER
TEMP
100,000
CLOCK CYCLE
FAULT TIMER
OSC
FAULT
IN
CLK
FLTALL
STARTUP
OSCILLATOR
TO INTERNAL
POWER
OUTSUB
REF
300ns
ONE-SHOT
1.25V
REFERENCE
REF
GND
COMPSU
FBSU
STEP-UP
TIMER
DONE
(SUSSD)
STARTUP
TIMER
TO
V_REF
COMPSD
FBSD
SOFT-START
RAMP
GENERATOR
TO
V_REF
ONSD
SUSSD
FLTALL
COMP_
FB_
SOFT-START
RAMP
GENERATOR
TO
V_REF
ON_
SUSSD
FLTALL
Figure 2. MAX1565 Functional Diagram
FAULT
CURRENT-
MODE
DC-TO-DC
STEP-UP
FAULT
CURRENT-
MODE
DC-TO-DC
STEP-DOWN
OUTSUA
LXSU
PGND
ONSU
FLTALL
INSD
LXSD
PGND
SDOK
FAULT
ONE OF 3
VOLTAGE-MODE
DC-TO-DC
DL_
CONTROLLERS
AUX_
______________________________________________________________________________________ 13