MAX8903A Maxim Integrated Products, MAX8903A Datasheet - Page 4

• 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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2A 1-Cell Li+ DC-DC Charger for USB*
and Adapter Power
ELECTRICAL CHARACTERISTICS (continued)
(V
(Note 1)
4
Fast-Charge Current
DONE Threshold
R
ISET Output Voltage
ISET Current Monitor Gain
BAT Leakage Current
Charger Soft-Start Time
Charger Thermal Limit
Temperature
Charger Thermal Limit Gain
CHARGER TIMER
Prequalification Time
Fast-Charge Time
Timer Accuracy
Timer Extend Current Threshold
Timer Suspend Current Threshold
Charge Done Delay Time
THERMISTOR MONITOR
THM Threshold, Hot
THM Threshold, Cold
THM Threshold, Disabled
THM Input Leakage
THERMAL SHUTDOWN, VL, AND LOGIC I/O: CHG, FLT, DOK, UOK, DCM, CEN, USUS, IUSB
Logic-Input Thresholds
(DCM, CEN, USUS, IUSB)
Logic-Input Leakage Current
(DCM, CEN, USUS, IUSB)
DC
ISET
_______________________________________________________________________________________
= V
Resistor Range
USB
PARAMETER
= 5V, V
BAT
= 4V, circuit of Figure 2, T
R
R
R
Percentage of fast-charge, I
No DC or USB input
With valid input power, V
Charge current = 0 at + 120°C
C
C
Percentage of fast-charge current below which the timer
clock operates at half-speed
Percentage of fast-charge current below which timer
clock pauses
From done threshold detection until charger turns off and
CHG goes high
When charging is suspended, 1% hysteresis
When charging is suspended, 1% hysteresis
THM function is disabled below this voltage
THM = GND or VL; T
THM = GND or VL; T
High level
Low level
Hysteresis
V
INPUT
ISET
ISET
ISET
CT
CT
= 0.15µF
= 0.15µF
= 600Ω
= 1.2kΩ
= 2.4kΩ
= 0 to 5.5V
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
A
CONDITIONS
= +25°C
= +85°C
CEN
BAT
= 5V
T
T
decreasing
A
A
= +25°C
= +85°C
0.0254
0.27 x
0.73 x
x V
1800
MIN
900
450
V
V
-0.1
0.6
-15
1.3
40
16
VL
VL
VL
+0.001
0.28 x
0.74 x
0.03 x
0.001
2000
1000
TYP
1.25
0.05
0.01
0.01
500
100
660
V
V
V
1.5
1.0
10
33
50
20
15
50
1
5
VL
VL
VL
0.036 x
0.29 x
0.75 x
MAX
2200
1100
+0.2
+15
550
V
V
V
2.4
0.4
60
24
4
6
1
VL
VL
VL
A
= +25°C.)
UNITS
mA/A
%/°C
min
min
mA
mV
kΩ
ms
µA
°C
µA
µA
%
%
%
%
V
V
V
V
V
s