Analog Devices ADP5350 LFCSP | Demoboard EVAL-ADP5350

Description

This user guide describes the hardware and software for the evaluation of the ADP5350-EVALZ evaluation board, and includes detailed schematics and printed circuit board (PCB) layouts.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 ADP5350-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, 5 mm × 5 mm LFCSP package and a 32-ball, 3 mm × 3 mm WLCSP package.Full details on the device are provided in the ADP5350 data sheet, available from Analog Devices, Inc., which must be consulted in conjunction with this evaluation board user guide.

Features

• Switching mode USB battery charger
• High accuracy and programmable charge terminal voltage and charge current
• 3 MHz buck for high efficiency and small footprint
• Tolerant input voltage from −0.5 V to +20 V (USB VVBUSx)
• Power path control allows system to operate with dead or missing battery
• Compliant with JEITA charge temperature specification
• Voltage-based state of charge (SOC) calculation algorithm
• Extra low quiescent current in sleep mode
• Battery impedance chemistry (Li-Ion) compensation
• Battery temperature compensation
• No need for external sense resistor
• Boost regulator with 5-channel LED driver
• Support up to 4 LED in series or in parallel
• 5 independent programmable LED current sinks
• 64 programmable LED current levels (up to 20 mA)
• Programmable on and off timer for LED blinking
• Adaptive headroom control to maximize the efficiency
• Three 150 mA linear LDO regulators
• Ultralow IQ with zero load at 1 μA typical for LDO1
• Optional load-switch full turn-on mode
• Full I2C programmability with dedicated interrupt pin

Typical applications

• Portable consumer devices / Portable medical devices / Portable instrumentation devices / Wearable devices
• Rechargeable Li-Ion and Li-Ion polymer battery-powered devices

More information

• Datasheet
• IC product information