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MAX1535AETJMAXN/a5avaiHighly Integrated Level 2 SMBus Battery Charger


MAX1535AETJ ,Highly Integrated Level 2 SMBus Battery ChargerApplicationsLDO 2 23 DLONotebook and Subnotebook ComputersACIN 3 22 PGNDTablet PCsREF 4 21 CSIPMAX1 ..
MAX1535BETJ+ ,Highly Integrated Level 2 SMBus Battery ChargersApplications13 THMCSSN 28MAX1535BNotebook and Subnotebook Computers VCSSP 29 12 DDMAX1535CTablet PC ..
MAX1535CETJ+ ,Highly Integrated Level 2 SMBus Battery Chargersfeatures. The maximum♦ 6-Bit Input and Charge-Current Resolutioncurrent drawn from the AC adapter i ..
MAX1535CETJ+T ,Highly Integrated Level 2 SMBus Battery ChargersFeaturesThe MAX1535B/MAX1535C/MAX1535D are highly inte-♦ Compliant with Level 2 Smart-Battery-Charg ..
MAX1536ETI ,3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage ControlApplicationso oMAX1536ETI -40 C to +85 C 28 Thin QFN 5mm x 5mmChipset/Graphics Cores Notebook Compu ..
MAX1536ETI+T ,3.6A, 1.4MHz, Low-Voltage, Internal-Switch Step-Down Regulator with Dynamic Output Voltage ControlApplicationso oMAX1536ETI -40 C to +85 C 28 Thin QFN 5mm x 5mmChipset/Graphics Cores Notebook Compu ..
MAX4172EUA+T ,Low-Cost, Precision, High-Side Current-Sense AmplifierElectrical Characteristics(V+ = +3V to +32V; V , V = 0 to 32V; T = T to T ; unless otherwise noted. ..
MAX4172EUA-T ,Low-Cost, Precision, High-Side Current-Sense Amplifierapplications. The 0 to 32V input common-mode ● Minimizes Board Space Requirementsrange is independe ..
MAX4172EUA-T ,Low-Cost, Precision, High-Side Current-Sense AmplifierApplications3V TO 32VLOW-COST 0 TO 32V2ASWITCHING● Portable PCs: Notebooks/Subnotebooks/PalmtopsV A ..
MAX4173FESA ,Low-Cost / SOT23 / Voltage-Output / High-Side Current-Sense AmplifierELECTRICAL CHARACTERISTICS(V = 0 to +28V, V = +3V to +28V, V = 0, T = T to T , R = ¥ unless otherwi ..
MAX4173FEUT ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierELECTRICAL CHARACTERISTICS(V = 0 to +28V, V = +3V to +28V, V = 0V, T = T to T , R = ∞ unless otherw ..
MAX4173FEUT+ ,Low-Cost, SOT23, Voltage-Output, High-Side Current-Sense AmplifierFeaturesThe MAX4173 low-cost, precision, high-side current-♦ Low-Cost, Compact Current-Sense Soluti ..


MAX1535AETJ
Highly Integrated Level 2 SMBus Battery Charger
General Description
The MAX1535A is a highly integrated, multichemistry
battery charger that simplifies construction of advanced
smart chargers with a minimum number of external com-
ponents. It uses Intel’s system management bus
(SMBus) to control the charge voltage, charge current,
and the maximum current drawn from the AC adapter.
High efficiency is achieved through use of a constant off-
time step-down topology with synchronous rectification.
In addition to support of the Smart Battery Charger
Specifications Rev 1.1, the MAX1535A includes addi-
tional features. The maximum current drawn from the
AC adapter is programmable to avoid overloads when
supplying the load and the battery charger simultane-
ously. This enables the user to reduce the cost of the
AC adapter. The MAX1535A provides a digital output
that indicates the presence of an AC adapter. Based on
the presence or absence of the AC adapter, the
MAX1535A automatically selects the appropriate
source for supplying power to the system by controlling
two external P-channel MOSFETs. Under system con-
trol, the MAX1535A allows the battery to undergo a
relearning or conditioning cycle in which the battery is
completely discharged through the system load and
then recharged.
The MAX1535A is capable of charging 2, 3, or 4 lithium-
ion (Li+) cells in series, providing charge currents as
high as 8A. The DC-to-DC converter in the MAX1535A
uses a high-side P-channel switch with an N-channel
synchronous rectifier. The charge current and input cur-
rent-limit sense amplifiers have low input-offset errors
and can use small-value sense resistors (0.01Ω, typ).
The MAX1535A is available in a 5mm x 5mm 32-pin thin
QFN package and operates over the extended -40°C to
+85°C temperature range. An evaluation kit is available
to reduce design time.
Applications

Notebook and Subnotebook Computers
Tablet PCs
Portable Equipment with Rechargeable Batteries
Features
Compliant with Level 2 Smart Battery Charger
Specifications Rev 1.1
Intel SMBus 2-Wire Serial Interface±0.5% Charge-Voltage Accuracy11-Bit Charge-Voltage Resolution±3% Input Current-Limit AccuracyUses Small (10mΩ) Current-Sense Resistors8A Maximum Charge Current6-Bit Input and Charge-Current Resolution8V to 28V Input Voltage Range175s Charge Safety TimerAutomatic Selection of System Power SourceCharges any Battery Chemistry (Li+, NiCd, NiMH,
Lead Acid, etc.)
MAX1535A
Highly Integrated Level 2 SMBus
Battery Charger
Pin Configuration
Ordering Information

19-2848; Rev 1; 11/03
MAX1535A
Highly Integrated Level 2 SMBus
Battery Charger
ABSOLUTE MAXIMUM RATINGS

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, SRC, ACOKto GND .............-0.3V to +30V
DHIV to SRC.............................................................-6V to +0.3V
DHI, PDL, PDS to GND...............................-0.3V to VSRC + 0.3V
BATT, CSIP, CSIN to GND.....................................-0.3V to +20V
CSIP to CSIN, or CSSP to CSSN...........................-0.3V to +0.3V
CCI, CCS, CCV, DAC, REF to GND............-0.3V to VLDO + 0.3V
VDD, ACIN, SCL, SDA, DLOV, LDO, THM, INT, IMAX,
VMAX to GND...........................................................-0.3V to +6V
DLOV to LDO.........................................................-0.3V to +0.3V
DLO to PGND............................................-0.3V to VDLOV + 0.3V
PGND to GND.......................................................-0.3V to +0.3V
LDO Short-Circuit Current...................................................50mA
Continuous Power Dissipation (TA= +70°C)
32-Pin Thin QFN (derate 21.3mW/°C above +70°C)...1702mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
ELECTRICAL CHARACTERISTICS

(Circuit of Figure 1. VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VDD= 3.3V, ACIN = PGND = GND, LDO = DLOV,
VMAX = IMAX = REF, CLDO= 1µF, CDHIV= 0.1µF, CREF= 1µF, TA= 0°C to +85°C. Typical values are at TA= +25°C, unless other-
MAX1535A
Highly Integrated Level 2 SMBus
Battery Charger
ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1. VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VDD= 3.3V, ACIN = PGND = GND, LDO = DLOV,
VMAX = IMAX = REF, CLDO= 1µF, CDHIV= 0.1µF, CREF= 1µF, TA= 0°C to +85°C. Typical values are at TA= +25°C, unless other-
MAX1535A
Highly Integrated Level 2 SMBus
Battery Charger
ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1. VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VDD= 3.3V, ACIN = PGND = GND, LDO = DLOV,
VMAX = IMAX = REF, CLDO= 1µF, CDHIV= 0.1µF, CREF= 1µF, TA= 0°C to +85°C. Typical values are at TA= +25°C, unless other-
wise noted.)
MAX1535A
Highly Integrated Level 2 SMBus
Battery Charger
ELECTRICAL CHARACTERISTICS (continued)

(Circuit of Figure 1. VDCIN= VCSSP= VCSSN= 18V, VBATT= VCSIP= VCSIN= 12V, VDD= 3.3V, ACIN = PGND = GND, LDO = DLOV,
VMAX = IMAX = REF, CLDO= 1µF, CDHIV= 0.1µF, CREF= 1µF, TA= 0°C to +85°C. Typical values are at TA= +25°C, unless other-
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