MAX8814 MAXIM [Maxim Integrated Products], MAX8814 Datasheet - Page 2

• Manufacturer Part Number: MAX8814
• Description: 28V Linear Li+ Battery Charger with Smart Autoboot Assistant
• Manufacturer: MAXIM [Maxim Integrated Products]

ABSOLUTE MAXIMUM RATINGS
IN to GND ...............................................................-0.3V to +30V
ABI, BATT, EN, POK to GND....................................-0.3V to +6V
ABO to GND............................................-0.3V to (V
ISET to GND .............................................................-0.3V to +4V
IN to BATT Continuous Current .........................................1A
Continuous Power Dissipation (T
28V Linear Li+ Battery Charger with
Smart Autoboot Assistant
ELECTRICAL CHARACTERISTICS
(V
wise noted. Typical values are at T
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.
2
Input Voltage Range
Input Operating Voltage Range
Power-OK Threshold
Overvoltage-Lockout Trip
Threshold
IN Input Current
BATT Input Current
Battery Regulation Voltage
Minimum BATT Bypass
Capacitance
Fast-Charge Current
Prequalification Charge Current
Die Temperature Regulation
Threshold
V
Voltage
Current-Sense Amplifier Gain
(I
IN
8-Pin TDFN (derate 11.9mW/°C above +70°C)
(multilayer PCB) ........................................................953.5mW
BATT
BATT
_______________________________________________________________________________________
= 5V, V
Prequalification Threshold
to I
ISET
PARAMETER
BATT
)
= 4V, R
POK
= 1MΩ to BATT, EN = 0V, R
A
= +70°C)
A
= +25°C.) (Note 1)
V
10mV hysteresis (typ)
V
Constant-current charging mode (I
IC disabled (V
V
V
V
V
IC disabled
I
V
V
R
Percentage of the fast-charge current, V
T
V
I
BATT
BATT
A
IN
IN
IN
BATT
IN
BATT
BATT
BATT
ISET
BATT
= 0°C to +85°C
- V
rising, 100mV hysteresis (typ)
= 4V,
= 0 to 4V,
= 0A
= 570mA
= 14kΩ
BATT
= 4.2V
= 4.2V
= 3.5V
= 3.5V,
rising, 100mV hysteresis (typ)
,
BATT
EN
= 5V)
+ 0.3V)
CONDITIONS
ISET
RMS
= 2.8kΩ to GND, C
V
V
T
T
T
T
T
T
T
T
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
A
A
A
A
A
A
A
A
IN
IN
BATT
= +25°C
= +85°C
= 0°C to +85°C
= -40°C to +85°C
= 0°C to +85°C
= -40°C to +85°C
= 0°C to +85°C
= -40°C to +85°C
rising
falling
= 0A)
BATT
= 2.2V,
BATT
= 2.2µF, T
4.179
4.158
MIN
4.25
524
485
6.5
2.3
89
80
0
4
A
= -40°C to +85°C, unless other-
877.2
0.021
0.021
4.200
4.200
+115
TYP
0.23
570
570
107
107
0.8
2.2
2.5
40
30
10
7
1
3
0.065
4.221
4.242
MAX
6.50
1.35
0.50
616
656
125
134
7.5
2.7
28
10
15
UNITS
µA/A
mV
mA
mA
µA
µF
°C
%
V
V
V
V
V