MAX1772EEI ,Low-Cost, Multichemistry Battery- Charger Building BlockMAX177219-1772; Rev 2; 5/02Low-Cost, Multichemistry Battery-Charger Building Block
MAX1772EEI+ ,Low-Cost, Multichemistry Battery-Charger Building BlockELECTRICAL CHARACTERISTICS✕(V = V = V = 18V, V = V = V = 12V, V = 3.0V, V = V = 0.75 V , V = 2.0V,D ..
MAX1772EEI+T ,Low-Cost, Multichemistry Battery-Charger Building BlockMAX177219-1772; Rev 4; 2/09Low-Cost, Multichemistry Battery-Charger Building Block
MAX1773AEUP ,Power Source Selector for Dual-Battery SystemsELECTRICAL CHARACTERISTICS(V = V = 16.8V, C = 3.3µF, V = 0.93V, V = V = 28V, V = 3V, V = V = 1.65V, ..
MAX1773AEUP ,Power Source Selector for Dual-Battery SystemsApplications MAX1773AEUP -40°C to +85°C 20 TSSOPNotebook and Subnotebook Computers PDAs and Handy-T ..
MAX1773AEUP ,Power Source Selector for Dual-Battery SystemsMAX1773/MAX1773A19-1796; Rev 1; 1/03Power Source Selector for Dual-Battery Systems
MAX4606ESE ,5 / Quad / SPST / CMOS Analog SwitchesApplicationsMAX4604EPE -40°C to +85°C 16 Plastic DIPReed Relay Replacement PBX, PABX SystemsOrderin ..
MAX4606ESE+ ,5Ω, Quad, SPST, CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, V = 5V, V = 2.4V, V = 0.8V, T = T to ..
MAX4607CSE ,2.5 / Dual / SPST / CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—Dual Supplies(V+ = +15V, V- = -15V, V = +5V, V = +2.4V, V = +0.8V, T = T ..
MAX4609CSE ,2.5 / Dual / SPST / CMOS Analog Switchesapplications where current switching is♦ Guaranteed ESD Protection > 2kV required. They have low po ..
MAX4609ESE ,2.5 / Dual / SPST / CMOS Analog SwitchesApplicationsMAX4607ESE -40°C to +85°C 16 Narrow SOMAX4607EPE -40°C to +85°C 16 Plastic DIPReed Rela ..
MAX4610CPD ,Low-Voltage / Quad / SPST CMOS Analog SwitchesFeaturesThe MAX4610/MAX4611/MAX4612 quad, low-voltage,' Pin-Compatible with Industry-Standard 74HC4 ..
MAX1772EEI
Low-Cost, Multichemistry Battery- Charger Building Block
General DescriptionThe MAX1772 is a highly-integrated, multichemistry
battery-charger control IC that simplifies the construc-
tion of accurate and efficient chargers. The MAX1772
uses analog inputs to control charge current and volt-
age and can be programmed by the host or hardwired.
High efficiency is achieved by a buck topology with
synchronous rectification.
Maximum current drawn from the AC adapter is pro-
grammable to avoid overloading the AC adapter when
supplying the load and the battery charger simultane-
ously. This enables the user to reduce the cost of the
AC adapter. The MAX1772 provides outputs that can
be used to monitor the current drawn from the AC
adapter, battery-charging current, and the presence of
an AC adapter.
The MAX1772 can charge two to four lithium-ion (Li+)
series cells, easily providing 4A. When charging, the
MAX1772 automatically transitions from regulating cur-
rent to regulating voltage. It is available in a space-sav-
ing 28-pin QSOP package.
ApplicationsNotebook and Subnotebook Computers
Personal Digital Assistants
Hand-Held Terminals
FeaturesInput Current Limiting±0.5% Output Voltage Accuracy Using Internal
Reference (0°C to +85°C)Programmable Battery Charge Current >4AAnalog Inputs Control Charge Current and
Charge VoltageMonitor Outputs for:
Current Drawn from AC Input Source
Charging Current
AC Adapter PresentUp to 18.2V (max) Battery Voltage8V to 28V Input Voltage>95% Efficiency99.99% (max) Duty Cycle for Low-Dropout
OperationCharges Any Battery Chemistry: Li+, NiCd, NiMH,
Lead Acid, etc.
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
Pin Configuration19-1772; Rev 2; 5/02
Ordering Information
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VREFIN= 3.0V, VVCTL= VICTL= 0.75 ✕REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST- VLX= 4.5V, GND = PGND = 0, CLDO= 1µF, LDO = DLOV, CREF= 1µF; pins CCI, CCS, and CCV are
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.
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
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
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 (TA= +70°C)
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
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
ELECTRICAL CHARACTERISTICS (continued)(VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VREFIN= 3.0V, VVCTL= VICTL= 0.75 ✕REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST- VLX= 4.5V, GND = PGND = 0, CLDO= 1µF, LDO = DLOV, CREF= 1µF; pins CCI, CCS, and CCV are
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
ELECTRICAL CHARACTERISTICS (continued)(VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VREFIN= 3.0V, VVCTL= VICTL= 0.75 ✕REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST- VLX= 4.5V, GND = PGND = 0, CLDO= 1µF, LDO = DLOV, CREF= 1µF; pins CCI, CCS, and CCV are
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
ELECTRICAL CHARACTERISTICS(VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VREFIN= 3.0V, VVCTL= VICTL= 0.75 ✕REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST- VLX= 4.5V, GND = PGND = 0, CLDO= 1µF, LDO = DLOV, CREF= 1µF; pins CCI, CCS, and CCV are
compensated per Figure 1a; TA
= -40°C to +85°C,unless otherwise noted.) (Note 1)
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
ELECTRICAL CHARACTERISTICS (continued)(VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VREFIN= 3.0V, VVCTL= VICTL= 0.75 ✕REFIN, CELLS = 2.0V,
ACIN = 0, CLS = REF, VBST- VLX= 4.5V, GND = PGND = 0, CLDO= 1µF, LDO = DLOV, CREF= 1µF; pins CCI, CCS, and CCV are
compensated per Figure 1a; TA
= -40°C to +85°C,unless otherwise noted.) (Note 1)
Note 1:Guaranteed by design. Not production tested.
Note 2:Tested under DC conditions. See text for more detail.
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Blockypical Operating Characteristics(Circuit of Figure 1a, VDCIN= 20V, TA = +25°C, unless otherwise noted.)
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
Typical Operating Characteristics (continued)(Circuit of Figure 1a, VDCIN= 20V, TA = +25°C, unless otherwise noted.)
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
Typical Operating Characteristics (continued)(Circuit of Figure 1a, VDCIN= 20V, TA = +25°C, unless otherwise noted.)
MAX1772
Low-Cost, Multichemistry Battery-
Charger Building Block
