Product description
EKM035 is a charger module for 1-cell 3.7V LiPo batteries with an added step-up/step-down DCDC converter to keep the output voltage at a fixed 3.3V or 5V (selectable with jumper).
The charger is powered via the USB-C connector or a different DC power supply (4.1 - 5.5V) via the two adjecent pins. The charge current can be set from 0.2A to 2A.
The battery can be disconnected by shorting the two pins marked "SW", which makes it easy to wire a power switch to the module.
The pins for VIN, VSEL, SW and VOUT are placed on a 2.54mm grid, which makes it possible to mount the entire module on prototyping boards.
Features:
- Charge and power with one module
- Adjustable charge current for different battery sizes
- Adjustable output voltage, 3.3V or 5V
- LEDs for charge and power
Specifications:
- Supply voltage (charger): 4.1 - 5.5V
- Charge current: 0.2 - 2.0V
- Supply voltage (DCDC converter): 1.8 - 5.5V
- Output current (step-up): 1.2A (2A max)
- Output current (step-down): 2A (3A max)
- Dimensions: 40 x 16 x 7.15mm
