MAX1898EUB41-T Maxim Integrated Products, MAX1898EUB41-T Datasheet - Page 5

• Manufacturer Part Number: MAX1898EUB41-T
• Description: Battery Management Linear Charger for 1-Cell Li+ Battery
• Manufacturer: Maxim Integrated Products

(V
IN
1.02
1.00
0.98
0.96
0.94
0.92
0.90
= 5V, V
-40
NORMALIZED TO +25°C
BATT
NORMALIZED TIMER PERIOD
-15
vs. TEMPERATURE
= 4V, EN/OK = open, RSET = 2.8kΩ, RSTRT = GND, T
TEMPERATURE (°C)
Linear Charger for Single-Cell Li+ Battery
1.2
1.0
0.8
0.6
0.4
0.2
10
0
_______________________________________________________________________________________
3.9
NORMALIZED BATTERY CURRENT
35
vs. BATTERY VOLTAGE
4.0
BATTERY VOLTAGE (V)
60
4.1
85
4.2
1.002
1.001
1.000
0.999
0.998
0.997
0.996
-40
NORMALIZED TO +25°C
4.3
NORMALIZED BATT REGULATION
VOLTAGE vs. TEMPERATURE
-15
TEMPERATURE (°C)
10
Typical Operating Characteristics
A
35
= +25°C, unless otherwise noted.)
-20
-40
60
40
20
0
60
0.01
PHASE
85
0.1
VOLTAGE-LOOP GAIN
FREQUENCY (kHz)
1
60
55
50
45
40
GAIN
5
ISET = 2.8kΩ
CHARGING CURRENT SET
FOR 500mA
10
6
PRECHARGE CURRENT
100
vs. INPUT VOLTAGE
MAX1898 toc05
7
8
1000
V
IN
200
150
100
50
0
-50
(V)
9
10
11
12
5