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MAX1811 싱글셀 리튬 배터리 충전 USB 모듈
(CHARGER 26 CLICK)
개요
- 본 제품은 MAX1811 싱글셀 리튬 배터리 충전 USB 모듈입니다.
- MAX1811 칩을 탑재하고 있는 제품으로 500mA 충전 전류를 전달할 수 있습니다.
- USB C 커넥터를 통해 배터리를 충전할 수 있습니다.
특징
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HOW DOES IT WORK?
Charger 26 Click is based on the MAX1811, a USB-powered Li+ charger from Analog Devices. The voltage/current regulator of the MAX1811 consists of a voltage control loop, a current control loop, and a thermal control loop. The charger allows you to set the battery regulation voltage to a 4.1V or 4.2 single Li+ cell. It also allows you to set the battery's charging current in either 100mA or 500mA modes. You should note that by charging the battery over the powered USB host, you can select a 500mA mode. An unpowered USB hub is limited to only 100mA.
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Charger 26 Click is equipped with circuits that will recognize if the MAX1811 is powered over the USB. If not, the MAX1811 will be powered over the 5V mikroBUS™ socket rail. This circuit consists of the MAX40200, an ultra-tiny micropower 1A ideal diode with ultra-low voltage drop from Analog Devices, which will hold the 5V rail if there is a VUSB presence. The SN74AHC1G08, a single 2-input positive-AND gate from Texas Instruments, is here to prevent the MAX1811 charger from being powered from the UCB C input connector if the Charger 26 Click is not connected to a development board equipped with the mikroBUS™ socket. The CHG orange LED is here to indicate the charge status. You can connect the single Li+ cell battery over the JST output connector. Before you do so, please double-check the polarity of the battery.
Charger 26 Click uses the GPIO to communicate with the host MCU. You can select a battery regulation voltage over the VS pin, which, with a pull-up resistor, is set to a 4.2V battery regulation set point. You can also select a battery regulation current over the IS pin, which, with a pull-down resistor, is set to 100mA maximum battery regulation current. Besides the CHG LED, the charging status can be monitored over the CHG output pin. The enable EN pin controls the enable input of the MAX1811 charger, which is enabled by default by the pull-up resistor.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VCC SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used as a reference for further development.
SPECIFICATIONS
Type Battery charger Applications Can be used for the development of PDAs, digital still cameras, MP3 players, cell phones, hand-held devices, and more On-board modules MAX1811 - USB-powered Li+ charger from Analog Devices Key Features Charges single-cell Li+ batteries directly from the USB C connector, or over the 5V rail of the mikroBUS™ socket, high overall charging accuracy, selectable charging current and voltage, charging indicator, soft start of near-dead battery, checking for fault conditions, and more Interface GPIO ClickID Yes Compatibility mikroBUS™ Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V,External
문서
연관제품
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