Datasheet

MAX8677C
1.5A Dual-Input USB/AC Adapter Charger
and Smart Power Selector
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
SYS OUTPUT VOLTAGE
vs. USB VOLTAGE
MAX8677C toc12
V
USB
(V)
V
SYS
(V)
48567231
4.05
4.10
4.15
4.20
4.30
4.25
4.35
4.40
4.00
0
V
BAT
= 4V
NO SYS LOAD
SYS OUTPUT VOLTAGE
vs. DC VOLTAGE
MAX8677C toc13
V
DC
(V)
V
SYS
(V)
1041486122
4.15
4.20
4.30
4.25
4.35
4.40
4.00
4.05
4.10
0
V
BAT
= 4V
NO SYS LOAD
SYS OUTPUT VOLTAGE vs. SYS OUTPUT
CURRENT (USB AND DC DISCONNECTED)
MAX8677C toc14
V
SYS
(V)
1.50.5 2.01.0
I
SYS
(A)
3.9
4.0
4.1
4.3
4.2
4.4
4.5
3.6
3.8
3.7
0
V
BAT
= 4V
THE SLOPE OF THIS LINE
SHOWS THAT THE BAT-TO-SYS
RESISTANCE IS 40m
Ω
SYS OUTPUT VOLTAGE
vs. SYS OUTPUT CURRENT (DC)
MAX8677C toc15
V
SYS
(V)
2.0 2.51.00.5 3.01.5
I
SYS
(A)
4.3
4.7
5.1
5.5
3.5
3.9
0
V
BAT
= 4V
PEN1 = 1, PEN2 = X
CEN = 1
SYS OUTPUT VOLTAGE
vs. SYS OUTPUT CURRENT
MAX8677C toc16
V
SYS
(V)
2.0 2.51.00.5 3.01.5
I
SYS
(A)
4.1
4.5
4.3
4.9
4.7
5.1
3.5
3.9
3.7
0
V
BAT
= 4V
V
USB
= 5V
PEN1 = X
CEN = 1
100mA
500mA USB
VL OUTPUT VOLTAGE
vs. DC VOLTAGE
MAX8677C toc17
V
VL
(V)
8121042146
V
DC
(V)
1.5
2.0
3.0
2.5
3.5
0
1.0
0.5
0
I
VL
= 0mA
I
VL
= 10mA
NORMALIZED CHARGE CURRENT vs. AMBIENT
TEMPERATURE (LOW IC POWER DISSIPATION)
MAX8677C toc10
AMBIENT TEMPERATURE (
°
C)
NORMALIZED CHARGE CURRENT
60 8510 35-15
0.9925
0.9975
0.9950
1.0000
1.0050
1.0025
1.0075
1.0100
0.9900
-40
V
USB
= 5V, V
BAT
= 4V
BATTERY REGULATION VOLTAGE
vs. TEMPERATURE
MAX8677C toc11
TEMPERATURE (
°
C)
BATTERY REGULATION VOLTAGE (V)
60 8510 35-15
4.185
4.195
4.190
4.200
4.205
4.180
-40
40ppm/
°
C