Datasheet

MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
______________________________________________________________________________________ 21
PSET
ISET
PEN2
500mA
100mA
PEN1
CT
CHG
BATTERY
CHARGER
OK
TIMEOUT
DONE
CHARGING
ADAPTER
USB
CEN
OFF
ON
R7
R8
R9
C12
DC1
GND
INPUT FROM AC
ADAPTER/USB
4.1V TO 8V
POK
SYS1
BAT1
3.3V
VL
1.5V
REF
MAIN
BATTERY
PWM
SKIP
PWM
LX3
EN3
PG3
STEP-UP
LED
DRIVER
PWM BRIGHTNESS
CONTROL AND ENABLE
CS
OVP
BRT
IN45
IN67
LDO OUTPUT-
VOLTAGE
SETTING
EN4 ON
OFF
EN5
ON
OFF
EN6
ON
OFF
EN7
ON
OFF
OUT4
500mA
OUT4
OUT5
OUT6
OUT7
SL1
SL2
TRI-STATE MODE
INPUTS; SEE TABLE 2
INPUT-TO-SYS
CURRENT-
LIMITING
SWITCH
BATTERY-TO-SYS
SWITCH (ALLOWS
BAT AND DC TO SUPPLY
CURRENT TO SYS)
ANALOG DIMMING
(0 TO 1.5V)
THM
BATTERY THERMISTOR
CC3
C8
R1
C2
C1
C11
R6
L3
D1
D2
C14
C15
0.22µF
R10
C13
C16
INPUT-
VOLTAGE
MONITOR
INPUT LIMITER
AND
THERMAL
PROTECTION
+
-
100mV
E P
ONLY AVAILABLE
FOR THE MAX8662
DC2
SYS2
BAT2
OUT3 AT 30mA
VLOGIC
SYS
VLOGIC
C10
C3, 0.1µF
-
+
LX1
L1
PG1
PV1
C4
R2
R3
C5
MAIN
STEP-DOWN
REGULATOR
FB1
EN1
ON
OFF
OUT1
0.98V TO 3.3V AT 1.2A
MAIN
SYS
LX2
L2
PG2
PV2
C6
R4
R5
C7
CORE
STEP-DOWN
REGULATOR
FB2
EN2
ON
OFF
OUT2
0.98V TO 3.3V AT 0.9A
CORE
SYS
SYS
OUT5
150mA
OUT6
300mA
OUT7
150mA
SYS
C17
C18
C19
C9
SYS
MAX8662
MAX8663
D3
D4
D5
D6
D7
D8
D9 TO SYS*
{
1k
*OPTIONAL.
Figure 1. Block Diagram and Application Circuit