ML9077 - LAPIS

ML9077 Power-saving solar power supply control LSI

ML9077 controls charging a solar power current to a rechargeable battery. The control circuit is consists of a overcharge prevention circuit, a charge control circuit and a rechargeable battery voltage monitor circuit. Each circuit performs following operation. ● Overcharge prevention circuit When a rechargeable battery becomes FULL charge state, the current.

Features

• Self control the solar cell current for charging a rechargeable battery.
• Direct charge solar cell current (ISC) to a rechargeable battery. − [VSC＞2.0V, ISC≦1mA conditions]: Potential difference=Max 0.1V （VSC-VBAT） − [VSC＞2.0V, ISC≦1mA conditions]: Potential difference=Max 2.0V （VSC-VBAT）
• 2 Selectable overcharge prevention voltage.
• 2 Selectable low voltage detection voltage.
• Power supply system detects a low voltage of rechargeable battery and power off a external microcomputer.
• Low power operation − Solar cell current : 80nA − Rechargeable battery current : 80nA
• Shipment − 1 2-pi.