"Step-up DC/DC converter" for long battery life with low power consumption

"BU33UV7NUX" is ROHM 's step-up DC/DC converter for dry batteries.

In recent years, with the spread of compact electronic devices such as wearable devices, battery life has become an important issue. BU33UV7NUX is a step-up DC/DC converter for dry batteries optimized to extend battery life to the maximum.

BU33UV7NUX has the following major features and benefits.

2. High-precision fixed 3.3V output to stabilize the operation of electronic devices

BU33UV7NUX can output fixed 3.3V with high accuracy by internal resistance. VIN and VOUT pass through even if the VIN voltage exceeds the output voltage of 3.3V.

Therefore, a stable voltage can be supplied to electronic devices.

3. Extend the operating time by using up the battery to the end

BU33UV7NUX can output 500mA (MODE=H) even if the voltage of the 2-cell battery drops to 1.8V.

Since it is possible to supply a minimum amount of power even at low input voltages, it is possible to maximize the drive time of electronic devices.

"BU33UV7NUX-EVK-101" evaluation board for immediate evaluation

The BU33UV7NUX-EVK-101 Evaluation Kit is designed for easy evaluation of the BU33UV7NUX Boost DC/DC Converter.

The evaluation kit can operate with an input voltage range of 0.6V to 4.5V.

The specifications of the evaluation kit are as follows.

• 0.6V to 4.5V input voltage
• 3.3V output voltage
• 500mA (VIN=1.8V, MODE=H) output current

In addition, this evaluation kit allows you to start evaluating immediately by following the steps below.

1. Connect the positive terminal of the load to "VOUT" and the negative terminal to "GND"
2. Apply the positive terminal of the DC power supply to "VIN" and the negative terminal to "GND"
3. Make sure the output voltage is 3.3V before enabling the load

Application example

• Single Cell, 2 Cell Alkaline, NiCd or NiMH or Single Cell Li Battery Powered Products
• wearable device
• IC recorder
• wireless mouse
• portable audio player
• cell phone
• personal medical products
• Remote controller

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