MAX8900A MAXIM [Maxim Integrated Products], MAX8900A Datasheet - Page 9

• Manufacturer Part Number: MAX8900A
• Manufacturer: MAXIM [Maxim Integrated Products]

(Circuit of Figure 1, V
Rating and JEITA Battery Temperature Monitoring
1.2A Switch-Mode Li+ Chargers with ±22V Input
V
V
OUT
V
OUT
V
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
I
I
IN
LX
LX
LX
LX
0
= 6V, V
4
WAVEFORMS (I
8
MAX8900B DC SWITCHING
MAX8900B DC SWITCHING
WAVEFORMS (I
V
SWITCHING FREQUENCY
BAT
BAT
vs. INPUT VOLTAGE
= 4V
INPUT VOLTAGE (V)
12
= 3.6V, T
200ns/div
200ns/div
16
BAT
BAT
A
= 100mA)
MAX8900x
V
V
V
R
20
IN
OVLO
CEN
ISET
= 1.2A)
= +25NC, unless otherwise noted.)
V
RISING
BAT
Typical Operating Characteristics (continued)
= 0V
= 2.87kI
= 28V
MAX8900A toc12
MAX8900A toc14
= 3V
24
28
20mV/div
5V/div
0V
200mA/div
0A
20mV/div
5V/div
0V
500mA/div
0A
V
OUT
V
I
1.4
1.2
1.0
0.8
0.6
0.4
0.2
LX
LX
6
5
4
3
2
1
0
0
-40
0
R
R
SETI
SETI
-15
WAVEFORMS (I
vs. AMBIENT TEMPERATURE
0.2
MAX8900B DC SWITCHING
= 2.87kI
= 6.81kI
SWITCHING FREQUENCY
10
vs. CHARGE CURRENT
CHARGE CURRENT
CHARGE CURRENT (A)
0.4
35
V
V
V
200ns/div
IN
IN
IN
60
T
A
= 5V, V
= 6V, V
= 4.5V, V
0.6
(°C)
BAT
85
BAT
BAT
= 440mA)
110
0.8
BAT
V
= 3V
= 4V
THM
= 4V
135
MAX8900A toc13
1.0
= V
160
AVL
/2
1.2
185
20mV/div
5V/div
0V
500mA/div
0A
9