USB-Powered Li+ Charger
ELECTRICAL CHARACTERISTICS
(V = 4.5V, T = -40°C to +85°C, unless otherwise noted.) (Note1)
IN
A
PARAMETER
CONDITIONS
MIN
4.35
3.75
TYP
MAX
6.50
4.05
3
UNITS
V
Input Supply Voltage
Input Undervoltage Lockout
I
rising
V
IN
Operating, EN = IN, no load
Shutdown, EN = GND
mA
µA
Input Supply Current
6
BATT rising, transition from precondition to
charge mode
Precondition Threshold
BATT Regulation Voltage
2.3
2.7
V
V
SELV = GND, I
= 0
4.06
4.16
4.14
4.24
BATT
SELV = IN, I
= 0
BATT
BATT Leakage Current (Input
Power Removed)
V
= 4.2V, IN = GND
10
3
µA
µA
BATT
BATT Shutdown Current
EN = GND, V
= 4.2V
BATT
Note 1: Specifications to -40 C are guaranteed by design and not production tested.
Typical Operating Characteristics
(CHG unconnected, C
= 2.2µF, T = +25°C, unless otherwise noted.)
A
BATT
SUPPLY CURRENT vs. INPUT VOLTAGE
(SHUTDOWN)
CHARGE CURRENT
vs. INPUT VOLTAGE HEADROOM
SUPPLY CURRENT
vs. INPUT VOLTAGE (ENABLED)
500
450
400
350
300
250
200
150
100
50
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
V
IN
= V = V
EN
SELV
V
= V
= 0
IN
SELV
V
EN
V
SELI
= V
IN
V
= V
IN
SELI
V
V
= 4.1V
BATT
V
4
= 0
SELI
= V
SELV
IN
V
SELI
= 0
0
0
1
2
3
4
5
6
7
0
0.5
1.0
1.5
- V
2.0
(V)
2.5
3.0
0
1
2
3
5
6
7
V
IN
(V)
V
V
IN
(V)
IN
BATT
_______________________________________________________________________________________
3
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
