MAX8903A Maxim Integrated Products, MAX8903A Datasheet - Page 3

• Manufacturer Part Number: MAX8903A
• Description: 2A 1-Cell Li+ DC-DC Charger for USB* and Adapter Power
• Manufacturer: Maxim Integrated Products

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ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 1)
DC Output Current
500mA USB Mode
(Note 3)
DC Output Current
100mA USB Mode
(Note 2)
SYS to DC Reverse Current
Blocking
USB INPUT
USB Operating Range
USB Standoff Voltage
USB Undervoltage Threshold
USB Overvoltage Threshold
USB Current Limit
USB Supply Current
Minimum USB to BAT Headroom
USB to SYS Dropout Resistance
USB Soft-Start Time
SYS OUTPUT
Minimum SYS Regulation Voltage
Regulation Voltage
Load Regulation
CS to SYS Resistance
SYS to CS Leakage
BAT to SYS Resistance
BAT to SYS Reverse Regulation
Voltage
SYS Undervoltage Threshold
BATTERY CHARGER
BAT Regulation Voltage
Charger Restart Threshold
BAT Prequal Threshold
Prequal Charge Current
DC
= V
USB
PARAMETER
= 5V, V
_______________________________________________________________________________________
BAT
= 4V, circuit of Figure 2, T
2A 1-Cell Li+ DC-DC Charger for USB*
V
V
V
When V
When V
V
V
I
I
V
V
V
I
I
I
V
V
V
V
SYS falling, 200mV hysteresis (Note 4)
I
Change in V
V
Percentage of fast-charge current set at ISET
SYS
SYS
SYS
SYS
SYS
BAT
DCM
DCM
SYS
IUSB
IUSB
USUS
USB
DC
DC
SYS
DC
USB
BAT
= I
= I
falling below DC UVLO to initiate USB soft-start
= 1A, V
= 0A
= 0 to 2A
= 6V, V
= V
= 0mA
= 5.5V, V
= 5.5V, V
rising, 180mV hysteresis
rising
= 5V, V
= 0V, V
= 0V, V
= 0V (100mA setting)
= 5V (500mA setting)
= 5V (USB suspend mode)
BAT
BAT
UOK
UOK
USB
= 0mA, V
= 0mA, V
BAT
DCM
BAT
goes low, V
goes high, V
= 0V, V
DC
IUSB
IUSB
DC
DC
A
< V
= 0V, V
from DONE to fast-charge
= 5V, V
= -40°C to +85°C, unless otherwise noted. Typical values are at T
= 0V
= V
= 5V
= 0V
SYS_MIN
BAT
CEN
CEN
CS
CONDITIONS
IUSB
USB
SYS
= 4.2V, I
= 0V
USB
= 0V
= 5V
rising, 500mV hysteresis
= 4V, I
= 0V, I
T
T
rising, 500mV hysteresis
A
A
= +25°C
= -40°C to +85°C
SYS
CS
SYS
= 1A
= 1A
= 200mA
and Adapter Power
4.179
4.158
3.95
-150
MIN
450
450
4.1
6.8
4.3
1.8
2.9
90
90
50
0
0.115
-100
TYP
0.01
0.07
0.01
0.05
475
475
4.0
6.9
1.3
0.8
0.2
3.0
4.4
1.9
4.2
4.2
95
95
15
20
40
75
10
1
3
4.221
4.242
MAX
4.05
0.25
0.35
100
500
100
500
100
6.3
7.0
4.5
0.1
2.0
-60
3.1
30
8
3
2
A
= +25°C.)
UNITS
mV/A
mA
mA
mA
mA
mV
mV
mV
ms
µA
µA
µs
%
Ω
Ω
Ω
V
V
V
V
V
V
V
V
V
3