Datasheet

MAX8677C
1.5A Dual-Input USB/AC Adapter Charger
and Smart Power Selector
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DC
= 5V, THM = CEN = USUS = GND, V
BAT
= 4V, V
PEN1
= V
PEN2
= 5V, USB, TSET, PREQ, CHG, DOK, UOK, FLT are unconnected,
T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
DC, PEN1 to GND .................................................-0.3V to +16V
USB to GND .............................................................-0.3V to +9V
VL to GND ................................................................-0.3V to +4V
BAT, SYS, CEN, USUS, PEN2, TSET to GND...........-0.3V to +6V
THM, PSET, ISET, CT to GND .........................-0.3V to VL + 0.3V
PREQ, CHG, DOK, UOK, FLT to GND .....................-0.3V to +6V
EP (exposed paddle) to GND ...............................-0.3V to +0.3V
DC Continuous Current (total in 2 pins) .........................2.4A
RMS
SYS Continuous Current (total in 2 pins) ........................2.4A
RMS
USB Continuous Current (total in 2 pins) .......................2.0A
RMS
BAT Continuous Current (total in 2 pins)........................2.4A
RMS
Continuous Power Dissipation (T
A
= +70°C)
(derate 27.8mW/°C above +70°C)........................... 2222mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature Range ............................-40°C to +125°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS MIN TYP MAX UNITS
DC-TO-SYS PREREGULATOR
DC Operating Range 4.1 6.6 V
DC Standoff Voltage V
BAT
= V
SYS
= 0V 14 V
DC Undervoltage Threshold W hen V
DOK
g oes l ow , V
D C
r i si ng , 500m V typ i cal hyster esi s 3.95 4.0 4.05 V
DC Overvoltage Threshold W hen V
DOK
g oes hi g h, V
D C
r i si ng , 360m V typ i cal hyster esi s 6.8 6.9 7.0 V
I
SYS
= I
BAT
= 0mA, V
CEN
= 0V 1 2
DC Supply Current
I
SYS
= I
BAT
= 0mA, V
CEN
= 5V 0.8 1.5
mA
DC Shutdown Current V
DC
= V
CEN
= USUS = 5V, V
PEN1
= 0V 195 333 µA
DC-to-SYS On-Resistance I
SYS
= 400mA, V
CEN
= 5V 0.2 0.35 Ω
DC-to-BAT Dropout Voltage
When SYS regulation and charging stops, V
DC
falling,
150mV hysteresis
10 50 90 mV
R
PSET
= 1.5kΩ 1800 2000 2200
R
PSET
= 3kΩ 900 1000 1100
R
PSET
= 6.3kΩ 450 475 500
V
PEN1
= 0V, V
PEN2
= 5V
(500mA USB mode)
450 475 500
DC Current Limit
(See Table 2 for Input Source
Control)
V
DC
= 6V, V
SYS
= 5V,
T
A
= +25°C
V
PEN1
= 0V, V
PEN2
= 0V
(100mA USB mode)
80 95 100
mA
PSET Resistance Range 1.5 6.3 kΩ
SYS Regulation Voltage V
DC
= 6V, I
SYS
= 1mA to 1.75A, V
CEN
= 5V 4.29 4.35 4.40 V
Connecting DC when no USB present 1.5 ms
Input Current Soft-Start Time
Connecting DC with USB present 50 µs
Thermal-Limit Temperature
Die temperature at which charging and input current limits
are reduced
+100 °C
Thermal-Limit Gain I
SYS
reduction/die temperature (above +100°C) 5 %/°C
VL Voltage I
VL
= 0 to 10mA 3.0 3.3 3.6 V