Product Summary

The MAX8731AETI is an SMBUS programmable multichemistry battery charger. The MAX8731AETI uses a minimal command set to easily program the charge voltage,charge current, and adapter current limit.The MAX8731AETI charges one to four Li+ series cells and delivers up to 8A charge current. The MAX8731AETI drives n-channel MOSFETs for mproved efficiency and reduced cost. Low-offset current-sense amplifiers provide high accuracy with 10mΩ sense resistors.

Parametrics

MAX8731AETI absolute maximum ratings: (1)DCIN, CSSN, CSIN, FBSA, FBSB to GND:-0.3V to +28V; (2)CSSP to CSSN, CSIP to CSIN, PGND to GND:-0.3V to +0.3V; (3)BST to GND :-0.3V to +32V ; (4)BST to LX:-0.3V to +6V; (5)DHI to LX:-0.3V to +(VBST + 0.3)V; (6)DLO to PGND:-0.3V to +(LDO + 0.3)V; (7)LX to GND :-6V to +28V; (8)CCI, CCS, CCV, DAC, REF, IINP to GND:-0.3V to (VVCC + 0.3)V ; (9)VDD, SCL, SDA, BATSEL, ACIN, ACOK, VCC to GND, LDO to PGND :-0.3V to +6V; (10)Continuous Power Dissipation (TA = +70°C) 28-Pin Thin QFN(derate 20.8mW/°C above +70°C):1666.7 mW; (11)Operating Temperature Range:-40°C to +85°C; (12)Junction Temperature:+150°C; (13)Storage Temperature Range:-60°C to +150°C; (14)Lead Temperature (soldering, 10s):+300°C.

Features

MAX8731AETI features: (1)0.5% Battery Voltage Accuracy;(2)3% Input Current-Limit Accuracy; (3)3% Charge-Current Accuracy; (4)SMBus 2-Wire Serial Interface; (5)Cycle-by-Cycle Current Limit:Battery Short-Circuit Protection;Fast Response for Pulse Charging;Fast System-Load-Transient Response; (6)Dual-Remote-Sense Inputs; (7)Monitor Outputs for:Adapter Current (4% Accuracy);AC Adapter Detection; (8)11-Bit Battery Voltage Setting; (9)6-Bit Charge-Current/Input-Current Setting; (10)8A (max) Battery Charger Current; (11)11A (max) Input Current; (12)+8V to +26V Input Voltage Range; (13)Charges Li+, NiMH, and NiCd Battery Chemistries.

Diagrams

MAX8731 AE pin connection

MAX800L
MAX800L
Other

Data Sheet
Negotiable 
MAX800LCPE
MAX800LCPE
Maxim Integrated Products
Supervisory Circuits
Data Sheet
Negotiable 
MAX800LCPE+
MAX800LCPE+
Maxim Integrated Products
Supervisory Circuits MPU Supervisor
Data Sheet
0-1: $6.43
1-25: $4.28
25-50: $3.86
50-100: $3.11
MAX800LCSE
MAX800LCSE
Maxim Integrated Products
Supervisory Circuits
Data Sheet
Negotiable 
MAX800LCSE+
MAX800LCSE+
Maxim Integrated Products
Supervisory Circuits MPU Supervisor
Data Sheet
0-1: $6.69
1-25: $4.49
25-50: $3.25
50-100: $3.22
MAX800LCSE+T
MAX800LCSE+T
Maxim Integrated Products
Supervisory Circuits MPU Supervisor
Data Sheet
0-2080: $2.75
2080-2500: $2.75