MP2662GC-0000-Z

MP2662 500mA Single-Cell Li-ion Battery Charger with Power Path Management, 1mA Termination and VIN_UVLO or VBATT>VBATT_UVLO? No Yes Sleep Comparator Active, Battery FET driver power up I2C Write? Yes No Default Mode Registers set as default Host Mode Host Programs Registers Yes I2C Watchdog Timer Disabled Yes No I2C Watchdog Timer Reset(9) I2C Watchdog Timer Reset No No Watchdog Timer Expired? Yes Figure 17: Default Mode and Host Mode Selection NOTE: 9) Once the watchdog timer expires, the I2C watchdog timer must be reset or will not be valid in the next cycle. MP2662 Rev. 1.1 5/20/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 34 MP2662 – 0.5A, 1-CELL CHARGER W/ I2C CONTROL, POWER PATH CONTROL FLOWCHART (continued) POR VDD is powered by Max (VIN, VBATT) No VDD>2V? Yes I2C is ready HIZ Mode? Yes HIZ Mode, SYS is supplied by BATT No EN BG NG VIN, Q1 is Off No All happen? VIN_OVP > VIN > VIN_UVLO VIN > VBATT + VHDRM Yes Good VIN, Q1 is turned on and regulated No ENCHG? Yes Charge Fault Yes Any Fault? No ENCHG Regulate Q2 Figure 18: Input Power Start-Up Flow Chart MP2662 Rev. 1.1 5/20/2021 MonolithicPower.com MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited. © 2021 MPS. All Rights Reserved. 35 MP2662 – 0.5A, 1-CELL CHARGER W/ I2C CONTROL, POWER PATH CONTROL FLOWCHART (continued) ENCHG Charge Mode? VBATT>VBATT_REG VBATT_PRE