MAX1647 Datasheet, PDF (14/24 Pages) Maxim Integrated Products – Chemistry-Independent Battery Chargers

Chemistry-Independent
Battery Chargers
REF
10k
10k
THERMISTOR_COLD
THM
THERMISTOR_HOT
AGND
CS
CURRENT-SENSE
LEVEL SHIFT AND
GAIN OF 5.5
BATT
ON
SETI
BATT
R
AGND
RR
R
SETV
30k
3k
DCIN
VL
AC_PRESENT _{5.4V LINEAR}
REGULATOR
INTERNAL 3.9V
REF
REFERENCE
AGND
CCI
GMI
LEVEL
SHIFT
CLAMP
REF / 2 =
ZERO CURRENT
MIN
SUMMING
COMPARATOR
BLOCK
ON
GMV
CCV
AC_PRESENT AND
NOT (THERMISTOR_HOT
OR THERMISTOR_COLD)
BST
DRIVER
DHI
LX
VL
DRIVER
DLO
PGND
Figure 6b. MAX1648 Block Diagram
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