MAX8731AETI+ Maxim Integrated Products, MAX8731AETI+ Datasheet - Page 16

• Manufacturer Part Number: MAX8731AETI+
• Description: IC SMBUS LVL2 BATT CHRGR 28TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX8731AETI+

• Function: Charge Management
• Battery Type: Multi-Chemistry
• Voltage - Supply: 8 V ~ 26 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-WFQFN Exposed Pad
• Product: Charge Management
• Output Voltage: 5.4 V
• Operating Supply Voltage: 8 V to 26 V
• Supply Current: 2 uA
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Charge Safety Timers: Yes
• Mounting Style: SMD/SMT
• Temperature Monitoring: No
• Uvlo Start Threshold: 2.5 V
• Uvlo Stop Threshold: 100 mV
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

SMBus Level 2 Battery Charger
with Remote Sense
To set the output voltage, use the SMBus to write a 16-bit
ChargeVoltage() command using the data format listed in
Table
Word protocol (see
ChargeVoltage() is 0x15 (0b00010101). The MAX8731A
provides a 1.024V to 19.200V charge voltage range, with
Table 1. ChargeVoltage () (0x15)
16
______________________________________________________________________________________
BIT
10
11
12
13
14
15
1. The ChargeVoltage() command uses the Write-
0
1
2
3
4
5
6
7
8
9
Charge voltage, DACV 0
Charge voltage, DACV 1
Charge voltage, DACV 2
Charge voltage, DACV 3
Charge voltage, DACV 4
Charge voltage, DACV 5
Charge voltage, DACV 6
Charge voltage, DACV 7
Charge voltage, DACV 8
Charge voltage, DACV 9
Charge voltage, DACV 10
Figure
Setting Charge Voltage
BIT NAME
3). The command code for
—
—
—
—
—
Not used. Normally a 1mV weight.
Not used. Normally a 2mV weight.
Not used. Normally a 4mV weight.
Not used. Normally a 8mV weight.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 16mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 32mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 64mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 128mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 256mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance, 1024mV min.
1 = Adds 512mV of charger voltage compliance.
0 = Adds 0mA of charger voltage compliance.
1 = Adds 1024mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance.
1 = Adds 2048mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance.
1 = Adds 4096mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance.
1 = Adds 8192mV of charger voltage compliance.
0 = Adds 0mV of charger voltage compliance.
1 = Adds 16,384mV of charger voltage compliance, 19,200mV max.
Not used. Normally a 32,768mV weight.
16mV resolution. Set ChargeVoltage() below 1.024V to
terminate charging. Upon reset, the ChargeVoltage() and
ChargeCurrent() values are cleared and the charger
remains off until both the ChargeVoltage() and the
ChargeCurrent() command are sent. Both DHI and DLO
remain low until the charger is restarted.
DESCRIPTION