MAX846AEEE Maxim Integrated Products, MAX846AEEE Datasheet - Page 5

• Manufacturer Part Number: MAX846AEEE
• Description: Battery Management Multichemistry Bat Charger System
• Manufacturer: Maxim Integrated Products

Specifications of MAX846AEEE

• Battery Type: Li-Ion, Li-Polymer, NiCd, NiMH
• Output Voltage: 3.3 V
• Operating Supply Voltage: 3.7 V to 20 V
• Supply Current: 5 mA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Package / Case: QSOP-16
• Mounting Style: SMD/SMT

(T
__________________________________________Typical Operating Characteristics
A
= +25°C, unless otherwise noted.)
1.035
1.030
1.025
1.020
1.015
1.010
1.005
1.000
0.995
0.990
-10
-20
80
70
60
50
40
30
20
10
0
TRANSCONDUCTANCE vs. ISET VOLTAGE
10
0
C
V = V
0.2
CCI
V = 200mV
_______________________________________________________________________________________
CURRENT-SENSE AMPLIFIER
V = 100mV
= 10nF
0.4
100
CS+
CURRENT-LOOP GAIN
- V
0.6
ISET VOLTAGE (V)
FREQUENCY (Hz)
CS-
V = 250mV
0.8
V = 165mV
1k
1.0
PHASE
GAIN
1.2
10k
1.4
100k
1.6
900
800
700
600
500
400
300
200
100
0
1.8
MAX846-03
0
2.0
1M
-120
180
150
120
-30
-60
-90
90
60
30
Li-ION CHARGING PROFILE
0
Cost-Saving Multichemistry
60
TIME (MINUTES)
120
Battery-Charger System
CHARGING CURRENT
BATTERY VOLTAGE
180
MAX846-04
-10
-20
-30
-40
-50
-60
80
70
60
50
40
30
20
10
40
30
20
10
0
0
240
10
0
2 Li-Ion Cells
C
C
TIP2955 PNP PASS TRANSISTOR
9.0
8.8
8.6
8.4
8.2
8.0
7.8
7.6
7.4
7.2
7.0
CCV
OUT
1
ON
= - Charging at 100mA
= -Charging at 200mA
= 10nF
= 4.7 F
BATTERY INPUT CURRENT
100
82k
2
vs. BATTERY VOLTAGE
VOLTAGE-LOOP GAIN
CELL2 = GND
3
BATT VOLTAGE (V)
FREQUENCY (Hz)
1k
4
GAIN
5
OFF
10k
6
CELL2 = VL
7
PHASE
100k
128k
8
MAX846-04
9
1M
10
--120
180
150
120
-30
-60
-90
90
60
30
0
5