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MAX1772EEI+T

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
4 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DCIN
= V
CSSP
= V
CSSN
= 18V, V
BATT
= V
CSIP
= V
CSIN
= 12V, V
REFIN
= 3.0V, V
VCTL
= V
ICTL
= 0.75
V
REFIN
, V
CELLS
= 2.0V,
V
ACIN
= 0V, CLS = REF, V
BST
- V
LX
= 4.5V, V
GND
= V
PGND
= 0V, C
LDO
= 1µF, LDO = DLOV, C
REF
= 1µF; pins CCI, CCS, and CCV
are compensated per Figure 1a; T
A
= 0°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
V
VCTL
= V
REFIN
(2, 3, or 4 cells)
(see Equation 1)
-0.5
+0.5
Battery-Regulation Voltage
Accuracy
V
VCTL
= V
REFIN
/20 (2, 3, or 4 cells)
(see Equation 1)
-0.5
+0.5
%
REFIN Range 2.0 3.6 V
REFIN Undervoltage Lockout
1.20 1.92
V
ICHG Transconductance
V
ICHG
to (V
CSIP
- V
CSIN
); V
CSIP
-
V
CSIN
= 0.185V; V
ICHG
= 0V, 3.0V
0.95 1.00 1.05
µS
V
CSIP
- V
CSIN
= 0.185V
-5 +5
ICHG Accuracy
V
CSIP
- V
CSIN
= 0.05V
-10
+10
%
IINP Transconductance
V
IINP
to (V
CSSP
- V
CSSN
); V
CSSP
-
V
CSSN
= 0.185V; V
IINP
= 0V, 3.0V (Note 3)
0.85 1.00 1.15
µS
V
CSSP
- V
CSSN
= 0.185V
-15
+15
IINP Current Accuracy
V
CSSP
- V
CSSN
= 0.05V
(Note 3)
-20
+20
%
V
CSSP
- V
CSSN
= 0.08V, V
CLS
= 1.6V
-10
+10
CSSP - CSSN Accuracy
V
CSSP
- V
CSSN
= 0.2V, CLS = REF
-10
+10
%
CSSP + CSSN Input Voltage
Range
8.0 28 V
LOGIC LEVELS
CELLS Input Low Voltage 0.2 V
CELLS Input Middle Voltage 0.4
V
LDO
- 0.5
V
CELLS Input High Voltage
V
LDO
- 0.25
V
LDO
V
CELLS Input Bias Current
V
CELLS
= 0V or V
LDO
-10
+10
µA
ACOK Sink Current
V
ACOK
= 0.4V
1 mA
ACOK Leakage Current
V
ACOK
= 5.5V
-1 +1 µA
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
_______________________________________________________________________________________ 5
ELECTRICAL CHARACTERISTICS
(V
DCIN
= V
CSSP
= V
CSSN
= 18V, V
BATT
= V
CSIP
= V
CSIN
= 12V, V
REFIN
= 3.0V, V
VCTL
= V
ICTL
= 0.75
V
REFIN
, V
CELLS
= 2.0V,
V
ACIN
= 0V, CLS = REF, V
BST
- V
LX
= 4.5V, V
GND
= V
PGND
= 0V, C
LDO
= 1µF, LDO = DLOV, C
REF
= 1µF; pins CCI, CCS, and CCV
are compensated per Figure 1a; T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY AND LDO REGULATOR
DCIN Input Voltage Range
V
DCIN
8.0
28.0
V
V
DCIN
falling
7
DCIN Undervoltage Lockout
Trip Point
V
DCIN
rising
7.85
V
DCIN Quiescent Current
I
DCIN
8.0V < V
DCIN
< 28V
6 mA
LDO Output Voltage
8.0V < V
DCIN
< 28V, no load
5.25
5.65
V
TRIP POINTS
BATT POWER_FAIL Threshold
V
CSSP
falling
50
150
mV
BATT POWER_FAIL Threshold
Hysteresis
100
300
mV
ACIN Threshold
V
ACIN
rising
2.007
2.089
V
ACIN Threshold Hysteresis 0.5% of REF 10 30 mV
ACIN Input Bias Current
V
ACIN
= 2.048V
-1 +1 µA
CLS Input Range 1.6
REF
V
CLS Input Bias Current
V
CLS
= 2.0V
-1 +1 µA
SWITCHING REGULATOR
Minimum Off-Time
V
BATT
= 16.8V
1 1.5 µs
Maximum On-Time 5 15 ms
Oscillator Frequency
f
OSC
(Note 1)
400
kHz
DHI Maximum Duty Cycle 99 %
V
BATT
= 19V, V
DCIN
= 0V
5
BATT Input Current
I
BATT
V
BATT
= 2V to 19V, V
DCIN
> V
BATT
+ 0.3V
500
µA
V
DCIN
= 0V
5
CSIP/CSIN Input Current
V
CSIP
= V
CSIN
= 12V
800
µA
V
DCIN
= 0V
0.3
CSSP/CSSN Input Current
V
CSSP
= V
CSSN
= V
DCIN
> 8.0V
800
µA
BATT/CSIP/CSIN Input Voltage
Range
0 19 V
CSIP to CSIN Full-Scale
Current-Sense Voltage
V
BATT
= 12V
189
219
mV
CSSP to CSSN Full-Scale
Current-Sense Voltage
189
219
mV
CURRENT AND VOLTAGE SETTING
ICTL = REFIN (see Equation 2) -8 +8
Charging Current Accuracy
ICTL = REFIN/32 (see Equation 2) -55
+55
%
V
VCTL
= V
ICTL
= V
REFIN
= 3V
-1 +1
ICTL, VCTL, REFIN Input Bias
Current
V
DCIN
= 0V, V
VCTL
= V
ICTL
= V
REFIN
= 5V
-1 +1
µA
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
6 _______________________________________________________________________________________
ELECTRICAL CHARACTERISTICS (continued)
(V
DCIN
= V
CSSP
= V
CSSN
= 18V, V
BATT
= V
CSIP
= V
CSIN
= 12V, V
REFIN
= 3.0V, V
VCTL
= V
ICTL
= 0.75
V
REFIN
, V
CELLS
= 2.0V,
V
ACIN
= 0V, CLS = REF, V
BST
- V
LX
= 4.5V, V
GND
= V
PGND
= 0V, C
LDO
= 1µF, LDO = DLOV, C
REF
= 1µF; pins CCI, CCS, and CCV
are compensated per Figure 1a; T
A
= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
ICTL Power-Down Mode
Threshold Voltage
REFIN
/100
REFIN
/33
V
V
VCTL
= V
REFIN
(2, 3, or 4 cells)
(see Equation 1)
-1 +1
Battery Regulation Voltage
Accuracy
V
VCTL
= V
REFIN
/20 (2, 3, or 4 cells)
(see Equation 1)
-1 +1
%
REFIN Range 2.0 3.6 V
REFIN Undervoltage Lockout
1.92
V
V
CSIP
- V
CSIN
= 0.185V
-5 +5
ICHG Accuracy
V
CSIP
- V
CSIN
= 0.05V
-10
+10
%
V
CSSP
- V
CSSN
= 0.185V
-15
+15
IINP Current Accuracy
V
CSSP
- V
CSSN
= 0.05V
(Note 3)
-20
+20
%
V
CSSP
- V
CSSN
= 0.08V, V
CLS
= 1.6V
-10
+10
CSSP - CSSN Accuracy
V
CSSP
- V
CSSN
= 0.2V, CLS = REF
-10
+10
%
CSSP + CSSN Input Voltage
Range
8 28 V
LOGIC LEVELS
CELLS Input Low Voltage 0.2 V
CELLS Input Middle Voltage 0.4
V
LDO
- 0.5
V
CELLS Input High Voltage
V
LDO
- 0.25
V
LDO
V
CELLS Input Bias Current
V
CELLS
= 0V or V
LDO
-10
+10
µA
ACOK Sink Current
V
ACOK
= 0.4V
1 mA
ACOK Leakage Current
V
ACOK
= 5.5V
-1 +1 µA
Note 2: Guaranteed by design. Not production tested.
Note 3: Tested under DC conditions. See text for more detail.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-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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