Product overview
Description
The PM6611N is a high efficiency battery charger with SMBus communication interface. It includes a synchronous switching DC-DC converter with N-channel high-side and low-side Power MOSFET drivers. The possibility to set the switching frequency with SMBus by choosing one of the two preset values of 350 kHz or 700 kHz assures the best trade-off between power conversion efficiency and application component cost and pcb size.
Integrated loop compensation network and soft-start allow the reduction of the number of external components.
The PM6611N integrates 2 charge pumps to drive N-channel BATFET and ACFET - RBFET MOSFETs.
The SMBus communication interface is used to set the battery charge current and voltage.
The PM6611N charges 2 to 4-series Li-Ion or LiFePO4cells, for mobile PC applications. It is available in a 16-pin, 3x3 mm, QFN package.
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All features
- Buck converter
- Synchronous buck converter with N-channel high-side, low-side Power MOSFET integrated drivers
- 350 kHz or 700 kHz switching frequency, selectable with SMBus
- AC adapter input voltage range 9 V - 24 V
- 5 V bias input voltage supply
- Battery charge voltage range 2.5 V - 18 V
- ±0.5% charge voltage accuracy
- 0.1% cell charge voltage resolution
- ±3% charge current accuracy
- Overvoltage, overcurrent protection
- Battery, inductor, Power MOSFET short- circuit protection
- Internal loop compensation network
- Integrated soft-start
- Selector
- N-channel BATFET MOSFET driver
- N-channel ACFET and RBFET MOSFET driver
- System
- 1 mA quiescent supply current
- 17 μA - 35 μA sleep mode current (BATFET charge pump OFF - ON)
- Thermal shutdown
- Buck converter
EDA Symbols, Footprints and 3D Models
The STMicroelectronics team - PM6611N
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