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MAX1772EEI+T
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P20
MAX1772
Low-Cost, Multichemistr
y Batter
y-
Char
ger Building Block
_______________________________________________________________________________________
7
T
ypical Operating Characteristics
(Circuit of Figure 1a, V
DCIN
= 20V, T
A
= +25°C, unless otherwise noted.)
V
BATT
20V/div
I
BATT
2A/div
V
CCI
500mV/div
V
CCV
500mV/div
LOAD-TRANSIENT RESPONSE
(BATTERY REMOVAL AND REINSERTION)
MAX1772 toc01
1ms/div
V
ICTL
= 0.957V
V
CTL
= 3.3V
BATTERY PRESENT
CCI
CCV
V
BATT
20V/div
I
LOAD
2A/div
V
CCS
500mV/div
V
CCI
500mV/div
LOAD-TRANSIENT RESPONSE
(STEP-IN LOAD CURRENT)
MAX1772 toc02
1ms/div
V
ICTL
= 3.30V
CHARGING CURRENT = 2.0A
V
BATT
= 16V
LOAD STEP = 0 TO 3A
I
SOURCE
LIMIT = 5A
CCI
CCS
V
BATT
(AC-COUPLED)
100mV/div
V
DCIN
10V/div
LINE-TRANSIENT RESPONSE
MAX1772 toc03
2ms/div
V
BATT
= 16V
V
DCIN
= 18.5V TO 27.5V
I
LOAD
= 150mA
-0.4
-0.2
-0.3
-0.1
0.2
0.3
0.1
0
0.4
0
2345
1
6789
1
0
LDO LOAD REGULATION
MAX1772 toc04
LDO CURRENT (mA)
LDO ERROR (%)
V
VCTL
= 0V
V
ICTL
= 3.3V
V
DCIN
= 20.0V
V
LDO
= 5.40V
MAX1772
Low-Cost, Multichemistr
y Batter
y-
Char
ger Building Block
8
_______________________________________________________________________________________
-0.5
-0.2
-0.3
-0.4
-0.1
0
0.1
0.2
0.3
0.4
0.5
-40
10
-15
35
60
85
REF VOLTAGE ERROR vs. TEMPERATURE
MAX1772 toc07
TEMPERATURE (
°
C)
REF VOLTAGE ERROR (%)
V
ICTL
= 0V
V
VCTL
= 0V
NO LOAD
V
REF
= 4.096V
100
0
0.1
1
10
100
1000
10,000
EFFICIENCY vs. BATTERY CURRENT
(VOLTAGE CONTROL LOOP)
20
MAX1772 toc08
BATT CURRENT (mA)
EFFICIENCY (%)
40
60
80
10
30
50
70
90
V
VCTL
= 0V
V
ICTL
= 3.3V
V
REFIN
= 3.3V
CELL = 3
CELL = 2
CELL = 4
100
0
100
1000
10,000
EFFICIENCY vs. BATTERY CURRENT
(CURRENT CONTROL LOOP)
20
MAX1772 toc09
EFFICIENCY (%)
40
60
80
10
30
50
70
90
V
VCTL
= 0V
V
ICTL
= 3.3V
V
REFIN
= 3.3V
CELL = 2
CELL = 3
CELL = 4
BATT CURRENT (mA)
T
ypical Operating Characteristics (continued)
(Circuit of Figure 1a, V
DCIN
= 20V, T
A
= +25°C, unless otherwise noted.)
-1.0
-0.6
-0.8
-0.2
-0.4
0.2
0
0.4
0.8
0.6
1.0
81
6
2
0
12
24
28
LDO LINE REGULATION
MAX1772 toc05
DCIN (V)
LDO ERROR (%)
V
LDO
= 5.40V
-0.20
-0.10
-0.15
-0.05
0.10
0.15
0.05
0
0.20
0
100
150
200
250
50
300
350
400
450
500
REF VOLTAGE LOAD REGULATION
MAX1772 toc06
REF CURRENT (
μ
A)
REF ERROR (%)
V
VCTL
= 0V
V
ICTL
= 3.3V
CELL = 4
V
REF
= 4.096V
MAX1772
Low-Cost, Multichemistr
y Batter
y-
Char
ger Building Block
_______________________________________________________________________________________
9
T
ypical Operating Characteristics (continued)
(Circuit of Figure 1a, V
DCIN
= 20V, T
A
= +25°C, unless otherwise noted.)
0
0.010
0.005
0.020
0.015
0.030
0.025
0.035
0.045
0.040
0.050
0
1000
1500
500
2000
2500
3000
3500
4000
OUTPUT V/I CHARACTERISTICS
MAX1772 toc10
BATT CURRENT (mA)
BATT VOLTAGE ERROR (%)
V
VCTL
= 0V
V
ICTL
= 3.3V
CELL = 4
CELL = 3
CELL = 2
0
0.04
0.02
0.08
0.06
0.12
0.10
0.14
0.18
0.16
0.20
0
0.2
0.3
0.4
0.1
0.5
0.6
0.7
0.9
0.8
1.0
BATT VOLTAGE ERROR vs. VCTL
MAX1772 toc11
VCTL/REFIN (%)
BATT VOLTAGE ERROR (%)
CELL = 4
V
REFIN
= 3.3V
NO LOAD
0
1
2
4
3
5
00
.
4
0.2
0.6
0.8
0.1
0.5
0.3
0.7
0.9
1.0
CURRENT SETTING ERROR vs. ICTL
MAX1772 toc12
ICTL/REFIN (%)
CURRENT SETTING ERROR (%)
V
BATT
> 2V
V
REFIN
= 3.3V
0
0.5
1.5
1.0
2.5
2.0
3.5
3.0
4.0
0
1000
1500
500
2000
2500
3000
3500
4000
ICHG ERROR vs. BATT LOAD CURRENT
MAX1772 toc13
BATT LOAD CURRENT (mA)
ICHG ERROR (%)
V
VCTL
= 0V
V
ICTL
= 3.3V
CELL = 4
P1-P3
P4-P6
P7-P9
P10-P12
P13-P15
P16-P18
P19-P20
MAX1772EEI+T
Mfr. #:
Buy MAX1772EEI+T
Manufacturer:
Maxim Integrated
Description:
Battery Management Battery-Charger Building Block
Lifecycle:
New from this manufacturer.
Delivery:
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EMS
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