Datasheet

MAX1667
Chemistry-Independent,
Level 2 Smart Battery Charger
20 ______________________________________________________________________________________
Figure 9. ChargingVoltage() Data to Voltage Mapping
18.416V
16.368V
V
REF
= 4.096V
DCIN > 20V
0V
0b000000000000xxxx
0x000x
0x20Dx 0x47Fx
0b001000001101xxxx
0b010010100000xxxx
0x313x
0b001100010011xxxx
0xFFFx
0b111111111111xxxx
0x106x
0b000100000110xxxx
4.192V
12.592V
ChargingVoltage() D15–D0 DATA
VOLTAGE SET POINT (V0)
8.400V
5
35
115
160 SEL = VL
SEL = OPEN
SEL = GND
0x0080
0b00001
(128) (896)
0b00111 0b10111 0b11111
(2944) (3968) (65535)
A:
B:
C:
0x0380 0x0B80 0x0F80 0xFFFF
A: ChargingCurrent( ) CODE (D15–D0)
B: EQUIVALENT DECIMAL CODE
C: CURRENT DAC CODE (DA4–DA0)
AVERAGE CS-BATT VOLTAGE
IN CURRENT REGULATION (mV)
Figure 10. Average Voltage Between CS and BATT vs. Code
Figure 11. Typical Thermistor Characteristics
1000
100
10
RESISTANCE (kΩ)
1
0.1
-40
-50 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110
TEMPERATURE (°C)