MAX8903A Maxim Integrated Products, MAX8903A Datasheet - Page 8

• 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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V
I
I
V
USB
SYS
BAT
I
I
2A 1-Cell Li+ DC-DC Charger for USB*
and Adapter Power
DC
SYS
SYS
(T
8
A
= +25°C, unless otherwise noted.)
-335mA
_______________________________________________________________________________________
475mA
3.6V
USB CONNECTED (R
SYS LOAD TRANSIENT
DC CONNECT WITH
(0 TO 1A)
100µs/div
200μs/div
-I
BAT
V
SYS
USUS
V
I
I
USB
SYS
BAT
= CHARGING
= 25Ω)
MAX8903A toc24
347mA
-475mA
475mA
MAX8903A toc21
3.7V
0V
50mV/div
AC COUPLED
500mA/div
0A
2V/div
500mA/div
500mA/div
0A
500mA/div
USB SUSPEND
3V
0A
0A
200μs/div
Typical Operating Characteristics (continued)
V
V
V
V
I
I
I
SYS
BAT
BAT
SYS
USB
USB
I
BAT
DC
MAX8903A toc27
144mA
144mA
0A
DC CONNECT WITH NO USB
3.6V
USB CONNECT WITH NO DC
3.6V
3.6V
BATTERY
CHARGER
SOFT-START
C
CHARGING
C
CHARGING
BATTERY
CHARGER
SOFT-START
DC
5V/div
USB
500mA/div
2V/div
500mA/div
3.5V
(R
(R
3.44V
SYS
SYS
400μs/div
400μs/div
= 25Ω)
= 25Ω)
C
CHARGING 850mA
SYS
-I
BAT
= CHARGING
3.84V
475mA
3.75V
5V
MAX8903A toc22
MAX8903A toc25
-330mA
-1A
V
USUS
V
I
I
USB
SYS
BAT
3V
2V/div
5V/div
1A/div
1A/div
2V/div
5V/div
500mA/div
500mA/div
0A
0A
3.6V
C
CHARGING
USB
BATTERY
CHARGER
SOFT-START
V
V
V
V
I
I
I
USB RESUME
SYS
USB
USB
BAT
BAT
SYS
BAT
I
DC
0V
200μs/div
3.8V
-330mA
475mA
DC DISCONNECT WITH NO USB
USB DISCONNECT WITH NO DC
3.6V
5V
850mA
3.68V
3.6V
-1A
(R
(R
MAX8903A toc28
475mA
-475mA
3.6V
SYS
SYS
100μs/div
40μs/div
= 25Ω)
= 25Ω)
-I
BAT
5V/div
500mA/div
2V/div
500mA/div
= CHARGING
3.6V
0A
144mA
144mA
MAX8903A toc23
MAX8903A toc26
2V/div
1A/div
1A/div
5V/div
2V/div
5V/div
500mA/div
500mA/div