Datasheet

7
Maxim Integrated
Dual-Input Linear Charger, Smart Power Selector
with Advanced Battery Temperature Monitoring
MAX8934G
Typical Operating Characteristics (continued)
(T
A
= +25NC, circuit of Figure 2, V
DC
= 6V, V
BATT
= 3.6V, thermistor Beta = 3964, unless otherwise noted. Negative battery current
indicates charging.)
SYS OUTPUT VOLTAGE
vs. SYS OUTPUT CURRENT (DC)
MAX8934G toc14
SYS CURRENT (A)
SYS VOLTAGE (V)
2.52.01.51.00.5
3.9
4.3
4.7
5.1
5.5
3.5
0.0 3.0
V
DC
= 6V
V
DC
= 5V
V
BAT
= 4V
PEN1 = 1, PEN2 = X
CEN = 1
BATTERY REGULATION VOLTAGE
vs. TEMPERATURE
MAX8934G toc10
BATTERY VOLTAGE (V)
BATTERY REGULATION VOLTAGE (V)
603510-15
4.175
4.180
4.185
4.190
4.195
4.200
4.205
4.210
4.215
4.220
4.170
-40 85
SYS OUTPUT VOLTAGE
vs. DC VOLTAGE
MAX8934G toc12
DC VOLTAGE (V)
12
108642
01
4
SYS VOLTAGE (V)
4.2
4.4
4.6
4.8
4.0
V
BATT
= 4.0V
NO SYS LOAD
NORMALIZED CHARGE CURRENT
vs. AMBIENT TEMPERATURE
(LOW IC POWER DISSIPATION)
MAX8943G toc09
AMBIENT TEMPERATURE (°C)
NORMALIZED CHARGE CURRENT
6035-15 10
0.9925
0.9950
0.9975
1.0000
1.0050
1.0025
1.0075
1.0100
0.9900
-40 85
V
USB
= 5V, V
BATT
= 4V
SYS OUTPUT VOLTAGE
vs. USB VOLTAGE
MAX8934G toc11
USB VOLTAGE (V)
SYS VOLTAGE (V)
7654321
4.2
4.4
4.6
4.8
4.0
08
V
BATT
= 4.0V
NO SYS LOAD
SYS OUTPUT VOLTAGE vs. SYS OUTPUT
CURRENT (USB AND DC DISCONNECTED)
MAX8934G toc13
SYS OUTPUT CURRENT (A)
SYS OUTPUT VOLTAGE (V)
1.51.00.5
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
4.5
3.6
0 2.0
V
BATT
= 4.0V
THE SLOPE OF THIS LINE
SHOWS THAT THE BATT-TO-SYS
RESISTANCE IS 40mI.