Rainbow Electronics MAX1567 - Manual (Page 19)

MAX1566/MAX1567
Six-Channel, High-Efficiency, Digital
Camera Power Supplies
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2.35V
V SU
ONSU
V REF
1V
ONSU
REFOK
DIE OVER
TEMP
FAULT
IN
CLK
NORMAL
MODE
STARTUP
OSCILLATOR
INTERNAL
POWER-
OK
100,000-
CLOCK-CYCLE
FAULT TIMER
REF
TO
V
REF
300ns
ONE-SHOT
SOFT-START
RAMP
GENERATOR
STEP-UP
SOFT-START TIMER
DONE
(SUSSD)
1.25V
REFERENCE
TO INTERNAL
POWER
OSC
CCSU
FBSU
TO
V
REF
SOFT-START
RAMP
GENERATOR
CCSD
FBSD
ONSD
SUSSD
ON_
SUSSD
TO
V
REF
SOFT-START
RAMP
GENERATOR
CC_
FB_
FAULT
CURRENT-
MODE
DC-TO-DC
STEP-DOWN
FAULT
1 OF 3
VOLTAGE-MODE
DC-TO-DC
CONTROLLERS
AUX_
PVSD
LXSD
REF
GND
PV
PGND
SDOK
DL_
FLTALL
FLTALL
FAULT
CURRENT-
MODE
DC-TO-DC
STEP-UP
PVSU
LXSU
PGSU
ONSU
FLTALL
FLTALL
FAULT
CURRENT-
MODE
DC-TO-DC
STEP-DOWN
OR
STEP-UP
PVM
SUSD
LXM
PGM
SOFT-START
RAMP
GENERATOR
FBM
TO V REF
CLK
SUSSD
FLTALL
ONM
AUX1OK
MAX1566
Figure 4. MAX1566 Functional Diagram