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MAX1535A

Maxim Integrated Products
Part Number MAX1535A
Manufacturer Maxim Integrated Products
Description Highly Integrated Level 2 Smbus Battery Charger
Published May 2, 2008
Detailed Description 19-2848; Rev 1; 11/03 KIT ATION EVALU LE B A IL A AV Highly Integrated Level 2 SMBus Battery Charger General Descripti...
Datasheet PDF File MAX1535A PDF File

MAX1535A
MAX1535A

Overview
19-2848; Rev 1; 11/03 KIT ATION EVALU LE B A IL A AV Highly Integrated Level 2 SMBus Battery Charger General Description Features ♦ Compliant with Level 2 Smart Battery Charger Specifications Rev 1.
1 ♦ Intel SMBus 2-Wire Serial Interface ♦ ±0.
5% Charge-Voltage Accuracy ♦ 11-Bit Charge-Voltage Resolution ♦ ±3% Input Current-Limit Accuracy ♦ Uses Small (10mΩ) Current-Sense Resistors ♦ 8A Maximum Charge Current ♦ 6-Bit Input and Charge-Current Resolution ♦ 8V to 28V Input Voltage Range ♦ 175s Charge Safety Timer ♦ Automatic Selection of System Power Source ♦ Charges any Battery Chemistry (Li+, NiCd, NiMH, Lead Acid, etc.
) MAX1535A The MAX1535A is a highly integrated, multichemistry battery charger that simplifies construction of advanced smart chargers with a minimum number of external components.
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 offwww.
DataSheet4U.
com time step-down topology with synchronous rectification.
In addition to support of the Smart Battery Charger Specifications Rev 1.
1, the MAX1535A includes additional features.
The maximum current drawn from the AC adapter is programmable to avoid overloads when supplying the load and the battery charger simultaneously.
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 control, 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 lithiumion (Li+) cells in series, providing charge currents as high as 8A.
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