Overview
The ADP5350ACPZ-1-R7, produced by Analog Devices Inc., is a highly integrated power management IC (PMIC) designed for rechargeable Li-Ion and Li-Ion polymer battery-powered devices. This PMIC combines multiple functionalities, including a high-performance buck regulator for battery charging, a fuel gauge, a highly programmable boost regulator for LED backlight illumination, and three low dropout (LDO) regulators. The device is optimized for low power consumption and high efficiency, making it suitable for a wide range of portable and wearable applications.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Buck Regulator Switching Frequency | fSW_CHG | 2.7 | 3 | 3.3 | MHz |
| Maximum Duty Cycle | DMAX | - | - | 96% | - |
| Peak Inductor Current | IL1_PK | 1500 | 1750 | 2200 | mA |
| LDO Input Voltage Range | VVIN123 | 2.56 | - | 5.5 | V |
| LDO Output Current | - | - | 150 | - | mA |
| Boost Regulator Switching Frequency | - | - | 1.5 | - | MHz |
| Junction Temperature Range | - | - | -40°C to +125°C | - | - |
| Package Type | - | - | 32-lead LFCSP, 32-ball WLCSP | - | - |
Key Features
- High-performance buck regulator for single Li-Ion/Li-Ion polymer battery charging with trickle charge, constant current (CC), and constant voltage (CV) fast charge modes.
- Fuel gauge with voltage-based battery state of charge (SOC) measurement.
- Highly programmable boost regulator for LED backlight illumination, supporting multiple LED configurations.
- Three LDO regulators with low shutdown and quiescent current to extend battery life.
- Optional load switch with full turn-on mode.
- I2C-compatible interface for programmability and status monitoring.
- Internal field effect transistor (FET) for battery isolation.
- Ultralow quiescent current (IQ) at 1 µA typical for LDO.
Applications
- Rechargeable Li-Ion and Li-Ion polymer battery-powered devices.
- Portable consumer devices.
- Portable medical devices.
- Portable instrumentation devices.
- Wearable devices.
Q & A
- What is the primary function of the ADP5350?
The ADP5350 is a power management IC (PMIC) that integrates a buck regulator for battery charging, a fuel gauge, a boost regulator for LED backlight, and three LDO regulators. - What types of batteries does the ADP5350 support?
The ADP5350 supports rechargeable Li-Ion and Li-Ion polymer batteries. - What are the operating modes of the buck regulator?
The buck regulator operates in trickle charge, constant current (CC), and constant voltage (CV) fast charge modes. - What is the switching frequency of the boost regulator?
The boost regulator operates at a 1.5 MHz switching frequency. - How many LDO regulators does the ADP5350 have?
The ADP5350 has three LDO regulators, each capable of delivering up to 150 mA. - What is the junction temperature range of the ADP5350?
The ADP5350 operates over a junction temperature range of -40°C to +125°C. - What package types are available for the ADP5350?
The ADP5350 is available in 32-lead LFCSP and 32-ball WLCSP packages. - Does the ADP5350 support I2C communication?
Yes, the ADP5350 has an I2C-compatible interface for programmability and status monitoring. - What is the typical quiescent current of the LDO regulators?
The typical quiescent current of the LDO regulators is 1 µA. - What types of devices can the ADP5350 be used in?
The ADP5350 can be used in portable consumer devices, medical devices, instrumentation devices, and wearable devices.
