Advanced Battery Management PMIC with Inductive Boost LED and Three LDO Regulators
The ADP5350, a power management IC (PMIC), combines one high performance buck regulator for single Li-Ion/Li-Ion polymer battery charging, a fuel gauge, a highly programmable boost regulator for LED backlight illumination, and three 150 mA LDO regulators.
The ADP5350 operates in trickle charge mode and in constant current (CC) and constant voltage (CV) fast charge mode. It features an internal field effect transistor (FET) that permits battery isolation on the system power side.
The ADP5350 fuel gauge is a space-saving and low current consuming solution. It is optimal for rechargeable Li-Ion battery-powered devices, and features a voltage-based, battery SOC measurement function.
The ADP5350 boost regulator operates at a 1.5 MHz switching frequency. It can be operated as a constant voltage regulator or as a supplemental constant current regulator for multiple LED backlight drivers.
The ADP5350 LED drivers can support a wide range of LED backlight configurations, either multiple LEDs in parallel or in series.
The ADP5350 low dropout (LDO) regulators are optimized to operate at low shutdown current and quiescent current to extend battery life. The device also operates as a load switch that can be fully turned off or on.
The I2C-compatible interface enables the programmability of all parameters, including status bit readback for operation monitoring and safety control.
The ADP5350 operates over the -40°C to +125°C junction temperature range and is available in a 32-lead, 5 mm × 5 mm LFCSP package.Applications
- Rechargeable Li-Ion and Li-Ion polymer battery-powered devices
- Portable consumer devices
- Portable medical devices
- Portable instrumentation devices
- Wearable devices
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
The ADP5350 combines one high performance buck regulator for single Li-ion/Li-ion polymer battery charging, a fuel gauge, a highly programmable boost regulator for LED backlight illumination, one ultralow quiescent current low dropout (LDO) regulator, and two general-purpose LDO regulators.
The ADP5350CP-EVALZ evaluation board supports an external USB dongle connection and the GUI software allows the user to evaluate the comprehensive functionalities provided by the I2C interface.
The ADP5350 operates over the −40°C to +125°C junction temperature range and is available in a 32-lead, 5mm × 5 mm LFCSP package.
Full details on the device are provided in the ADP5350 data sheet available from Analog Devices, Inc., and must be consulted in conjunction with this evaluation board user guide UG-1104.
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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