Chemistry-Independent Battery Chargers
SBS Level 2 Smart Battery Charger with SMBus Interface
DescriptionThe MAX1647/MAX1648 provide the power control necessary to charge batteries of any chemistry. In the MAX1647, all charging functions are controlled through the Intel® System Management Bus (SMBus™) interface. The SMBus 2-wire serial interface sets the charge voltage and current, and provides thermal status information. The MAX1647 functions as a level 2 charger, compliant with the Duracell®/Intel Smart Battery Charger Specification. The MAX1648 omits the SMBus serial interface, and instead sets the charge voltage and current proportional to the voltage applied to external control pins.
In addition to the feature set required for a level 2 charger, the MAX1647 generates interrupts to signal the host when power is applied to the charger or a battery is installed or removed. Additional status bits allow the host to check whether the charger has enough input voltage, and whether the voltage on or current into the battery is being regulated. This allows the host to determine when lithium-ion batteries have completed charge without interrogating the battery.
The MAX1647 is available in a 20-pin SSOP with a 2mm profile height. The MAX1648 is available in a 16-pin SO package.
- Charges Any Battery Chemistry: Li-Ion, NiCd, NiMH, Lead Acid, etc.
- Intel SMBus 2-Wire Serial Interface (MAX1647)
- Intel/Duracell Level 2 Smart Battery Compliant (MAX1647)
- 4A, 2A, or 1A Maximum Battery-Charge Current
- 11-Bit Control of Charge Current
- Up to 18V Battery Voltage
- 10-Bit Control of Voltage
- ±0.75% Voltage Accuracy with External ±0.1% Reference
- Up to 28V Input Voltage
- Battery Thermistor Fail-Safe Protection
- Charger Base Stations
- Notebook Computers
- PDAs and Other Handheld Devices
|Part Number||Lithium Ion Cells||Protected VIN|
|Charge Rate Set by||Max. ICHG|
|Charge Termination||Charge Regulation||Oper. Temp.|
|Switchmode||-40 to +85|
|See All Battery Chargers (74)|
| Pricing Notes: |
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.
Technical DocumentsApp Note 676 New Developments in Battery Chargers
App Note 666 Versatile ICs Enable Chemistry-Independent Battery Charging
Quality and Environmental DataProduct Reliability Reports: MAX1647.pdf
Lead-Free Package Tin (Sn) Whisker Reports
Tools & Models
|Device||Fab Process||Technology||Sample size||Rejects||FIT at 25°C||FIT at 55°C|
- AECQ-100 Grade 2 Temperature Range
- Operating Voltage from 9V to 65V
- Ultra-Low-Power Operation