The ADP5065ACBZ-1-R7 operates from a 4 V to 5.5 V input voltage range but is tolerant of voltages of up to 20 V. This alleviates the concerns about the USB bus spiking during disconnect or connect scenarios.
The ADP5065ACBZ-1-R7 also features an internal FET between the dc-to-dc charger output and the battery. This permits battery isolation and, hence, system powering under a dead battery or no battery scenario, which allows for immediate system function on connection to a USB power supply.
Based on the type of USB source, which is detected by an external USB detection chip, the ADP5065ACBZ-1-R7 can be set to apply the correct current limit for optimal charging and USB compliance.
The ADP5065ACBZ-1-R7 comes in a very small and low profile 20-lead WLCSP (0.5 mm pitch spacing) package.
The overall solution requires only five small, low profile external components consisting of four ceramic capacitors (one of which is the battery filter capacitor), one multilayer inductor. In addition to these components, there is one optional dead battery situation default setting resistor. This configuration enables a very small PCB area to provide an integrated and performance enhancing solution to USB battery charging and power rail provision.
Feature
- 3 MHz switch mode charger
- 1.25 A charge current from dedicated charger
- Up to 680 mA charging current from 500 mA USB Host
- Operating input voltage from 4.0 V up to 5.5V
- Tolerant input voltage −0.5 V to +20 V (USB VBUS)
- Dead battery isolation FET between battery and charger output
- Battery thermistor input with automatic charger shutdown for when battery temperature exceeds limits
- Compliant with the JEITA Li-Ion battery charging temperature specification
- SYS_EN_OK flag to hold off system turn-on until battery is at minimum required level for guaranteed system startup due to minimum battery voltage and/or minimum battery charge level requirements
- EOC programming with C/20, C/10 and specific current level selection
Applications
- Digital still cameras
- Digital video cameras
- Single cell Li-Ion portable equipment
- PDA, audio, GPS devices
- Mobile phones
(Picture: Pinout)
