Datasheet

MAX8808X/MAX8808Y/MAX8808Z
1A Linear Li+ Battery Chargers with Integrated Pass
FET and Thermal Regulation in 2mm x 2mm TDFN
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
IN
= 5V, V
BATT
= 4.0V, R
ACOK
= R
CHG
= 100kΩ to 5V, EN = unconnected (for the MAX8808X and MAX8808Z), EN = VL (for the
MAX8808Y), R
ISET
= 2.8kΩ to GND, C
VL
= 0.47µF, C
BATT
= 1µF, 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.
IN to GND ...............................................................-0.3V to +16V
VL, BATT, EN, ACOK, CHG to GND.........................-0.3V to +6V
VL, ISET to GND .......................................................-0.3V to +4V
VL to IN................................................................-16.3V to +0.3V
IN to BATT Continuous Current.............................................1.5A
Continuous Power Dissipation (T
A
= +70°C)
8-Pin 2mm x 2mm TDFN (derate 15.4mW/°C
above +70°C).............................................................1234mW
BATT Short-Circuit Duration .......................................Continuous
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PARAMETER CONDITIONS
MIN
TYP
MAX
UNITS
Input Voltage Range 015V
Input Operating Range
4.25 6.50
V
V
IN
rising 15 40 60
ACOK Threshold V
IN
- V
BATT
, 10mV hysteresis (typ)
V
IN
falling 10 30 45
mV
Overvoltage-Lockout Trip Point V
IN
rising, 100mV hysteresis (typ) 6.5 7 7.5 V
Charging (I
IN
- I
BATT
) 0.8 2
Disabled
0.23 0.50
IN Input Current
OFF state (V
IN
= V
BATT
= 4.0V)
0.065
mA
VL Output Voltage I
VL
= 100µA 3.0 V
VL Load Regulation I
VL
= 100µA to 2mA -5 -30 mV
VL Undervoltage-Lockout Trip
Point
V
VL
rising, 100mV hysteresis (typ)
2.74
V
V
IN
= 0 to 4V 1 10
BATT Input Current
Disabled 1 10
µA
Maximum RMS Charge Current 1
A
RMS
Battery Regulation Voltage I
BATT
= 1mA
4.162 4.200 4.238
V
Minimum BATT Bypass
Capacitance
2.2
µF/A
Fast-Charge Current Loop
System Accuracy
V
BATT
= 3.5V T
A
= 0°C to +85°C
418 465
512 mA