Low-Cost, Multichemistry Battery-
Charger Building Block
ABSOLUTE MAXIMUM RATINGS
DCIN, CSSP, CSSN to GND...................................-0.3V to +30V
BST to GND............................................................-0.3V to +36V
BST to LX..................................................................-0.3V to +6V
DHI to LX ....................................................-0.3V to (BST + 0.3V)
LX to GND .................................................................-6V to +30V
BATT, CSIP, CSIN to GND........................................-0.3V to 20V
CSIP to CSIN or CSSP to CSSN or
DLOV to LDO.........................................................-0.3V to +0.3V
DLO to PGND..........................................-0.3V to (DLOV + 0.3V)
LDO Short-Circuit Current ..................................................50mA
Continuous Power Dissipation (T = +70°C)
A
28-Pin QSOP (derate 10.8mW/°C above +70°C).........860mW
Operating Temperature Range
MAX1772EEI....................................................-40°C to +85°C
Junction Temperature ........................................................150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
PGND to GND ...........……….……………..…….-0.3V to +0.3V
CCI, CCS, CCV, DLO, ICHG, IINP,
ACIN, REF to GND ..............................-0.3V to (VLDO + 0.3V)
DLOV, VCTL, ICTL, REFIN, CELLS,
CLS, LDO, ACOK to GND ....................................-0.3V to +6V
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
✕
(V
= V
= V
= 18V, V
= V
= V
= 12V, V
= 3.0V, V
= V
= 0.75 REFIN, CELLS = 2.0V,
DCIN
CSSP
CSSN
BATT
CSIP
CSIN
REFIN
VCTL
ICTL
ACIN = 0, CLS = REF, V
- V = 4.5V, GND = PGND = 0, C
= 1µF, LDO = DLOV, C
= 1µF; pins CCI, CCS, and CCV are
BST
LX
LDO
REF
compensated per Figure 1a; T = 0°C to +85°C, unless otherwise noted. Typical values are at T = +25°C.)
A
A
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
SUPPLY AND LDO REGULATOR
V
DCIN Input Voltage Range
8
28
V
V
DCIN
DCIN falling
DCIN rising
8.0V < V
7.0
7.4
7.5
2.7
5.40
34
DCIN Undervoltage Lockout
Trip Point
7.85
6.0
I
< 28V
DCIN
DCIN Quiescent Current
LDO Output Voltage
LDO Load Regulation
mA
V
DCIN
8.0V < V
< 28V, no load
5.25
3.20
5.55
100
DCIN
0 < I
LDO
< 10mA
mV
LDO Undervoltage Lockout
Trip Point
V
= 8.0V
4.00
4.096
3.1
5.15
4.120
3.9
V
V
V
DCIN
0 < I
< 500µA
REF Output Voltage
4.072
REF
REF Undervoltage Lockout
Trip Point
REF falling
TRIP POINTS
V
falling
BATT POWER_FAIL Threshold
50
100
200
150
300
mV
mV
CSSP
BATT POWER_FAIL Threshold
Hysteresis
100
ACIN Threshold
ACIN rising
0.5% of REF
2.007
10
2.048
20
2.089
30
V
mV
µA
V
ACIN Threshold Hysteresis
ACIN Input Bias Current
CLS Input Range
V
V
V
= 2.048V
-1
+1
ACIN
1.6
-1
REF
+1
= 2.0V
CLS Input Bias Current
µA
CLS
SWITCHING REGULATOR
Minimum Off-Time
=16.8V
1.00
5
1.25
10
1.50
15
µs
ms
BATT
Maximum On-Time
f
Oscillator Frequency
(Note 1)
400
kHz
OSC
2
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MAXIM [ MAXIM INTEGRATED PRODUCTS ]
