Battery Source Click

How does it work?

Battery Source Click is based on the TPS81256, a high-efficiency step-up converter in a MicroSiP™ package from Texas Instruments. The TPS81256 features a high-frequency synchronous step-up DC/DC converter optimized for battery-powered portable applications. It boosts power from a connected battery (input range from 2.5V to 5.5V) and delivers it via a USB Type-C connector as 5V/1A. The TPS81256 includes a switching regulator, inductor, and input/output capacitors operating at a regulated 4MHz switching frequency. It enters Power-Save mode at light load currents, maintaining high efficiency across the entire load range. The PFM mode reduces the supply current to 43μA (typical) during light load operation, extending battery life. Additionally, it supports more than 3W output power over a full Li-Ion battery voltage range and has an input current of less than 1µA (typical) in shutdown mode, maximizing battery life. It is ideal for low-power applications that require efficient power management.

This board also features an output enable function implemented via the MAX40200, allowing users to control the power delivery on the USB-C output connector digitally. This control is achieved through the EN pin of the mikroBUS™ socket, enabling precise power flow management. Additionally, the board includes a red LED indicator labeled ENABLE, which provides a clear visual indication of active output. This allows for easy and convenient monitoring of the board’s status and ensures that users can quickly verify when the output is active.

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

Pinout diagram

This table shows how the pinout on Battery Source Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	EN	Output Enable
	NC	2	RST	INT	15	NC
ID COMM	CS	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power Supply	3.3V	7	3.3V	5V	10	5V	Power Supply
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

Battery Source Click electrical specifications

Software Support

We provide a library for the Battery Source Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.

Package can be downloaded/installed directly from NECTO Studio Package Manager(recommended), downloaded from our LibStock™ or found on MIKROE github account.

Library Description

This library contains API for Battery Source Click driver.

Key functions

• batterysource_set_output This function is used to set output state of Battery Source click board.

Example Description

This example demonstrates the use of Battery Source Click board™, by changing state of the output.

void application_task ( void )  
 { 
     log_printf( &logger, " Output is enabled rn" ); 
     batterysource_set_output( &batterysource, BATTERYSOURCE_ENABLE_OUTPUT ); 
     Delay_ms( 5000 ); 

     log_printf( &logger, " Output is disabled rn" ); 
     batterysource_set_output( &batterysource, BATTERYSOURCE_DISABLE_OUTPUT ); 
     Delay_ms( 5000 ); 
 }

The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended), downloaded from our LibStock™ or found on MIKROE github account.

Other MIKROE Libraries used in the example:

• MikroSDK.Board
• MikroSDK.Log
• Click.BatterySource

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. UART terminal is available in all MIKROE compilers.

mikroSDK

This Click board™ is supported with mikroSDK – MIKROE Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.

For more information about mikroSDK, visit the official page.