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ROHM Low Power Synchronous Buck-Boost DC-DC Converter Evaluation Board BU33UV7NUX EVK-101
Specifications
| Country of Origin | India |
|---|---|
| Brand | ROHM |
| Model | BU33UV7NUX |
| Output Voltage | 3.3 V |
| For Use With | BU33UV7NUX Converter |
| Standards/Approvals | RoHS |
| Kit Classification | Evaluation Board |
Key Features
- Supports output currents up to 500mA at 3.3V output voltage.
- Operates with input voltage from 1.8V to above 3.3V using two alkaline or one Li-ion/Li-polymer battery.
- Includes reset circuit with detection voltage at 1.5V and release at 1.9V.
- Features disconnect function during EN-OFF and UVLO for power saving.
- Offers Auto-PFM/PWM operation modes depending on input voltage level.
- Built-in thermal shutdown protects device from overheating.
- 10-pin VSON010X3020 package for compactness.
- Pass-through function connects Vout to Vin when input voltage exceeds 3.3V.
Product Description
ROHM BU33UV7NUX EVK-101 is a synchronous buck-boost DC-DC converter evaluation board designed for low power consumption and efficient power supply management, ideal for battery-powered applications. It supports powering devices using either two-cell alkaline/NiCd/NiMH batteries or a single Li-ion/Li-polymer battery.
This converter can deliver output currents up to 500mA at a fixed 3.3V output voltage, achieved via an internal resistor divider. When the input voltage (Vin) exceeds 3.3V, the output voltage (Vout) is connected directly to Vin via a pass-through function to maximize efficiency.
The BU33UV7NUX includes a reset circuit with detection voltage set at 1.5V and release voltage at 1.9V, ensuring reliable operation. It features a disconnect function that activates during EN-OFF and undervoltage lockout (UVLO) conditions to prevent unnecessary power drain.
Users can benefit from its auto PFM/PWM control modes, which automatically switch depending on mode selection and input voltage, optimizing the converter's efficiency under various loads. Additionally, the converter incorporates a thermal shutdown circuit to protect against overheating.
The evaluation board utilizes a compact 10-pin VSON010X3020 package, making it suitable for space-constrained designs and development environments. It complies with RoHS standards, ensuring environmentally responsible manufacturing.
Power Management Function: DC-DC converter with synchronous buck-boost operation. Output Current: Maximum 500mA at Ta=25°C, Vout=3.3V, Vin=1.8V. Reset Circuit: Detection voltage 1.5V, release voltage 1.9V. Operating Voltage: Supports two-cell alkaline/NiCd/NiMH or one Li-ion/Li-polymer battery.
Package Type: 10-pin VSON010X3020. Functions: Disconnect during EN-OFF/UVLO, Auto PFM/PWM modes, Pass-through, Thermal shutdown. Standards: RoHS compliant.
This evaluation board is suitable for industrial, laboratory, and development applications involving power management and battery-operated devices. It offers precise and reliable voltage regulation while optimizing power consumption.
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Frequently Asked Questions
The maximum output current is 500mA at a fixed output voltage of 3.3V.
It operates with an input voltage from 1.8V to above 3.3V.
It supports powering devices using either two-cell alkaline/NiCd/NiMH batteries or a single Li-ion/Li-polymer battery.
The evaluation board utilizes a compact 10-pin VSON010X3020 package.
Yes, it includes a thermal shutdown feature to protect against overheating and a disconnect function during EN-OFF and undervoltage lockout (UVLO) conditions.
The detection voltage for the reset circuit is set at 1.5V, with a release voltage of 1.9V.
Yes, it complies with RoHS standards, ensuring environmentally responsible manufacturing.
It serves as a DC-DC converter with synchronous buck-boost operation for efficient power management.
When the input voltage exceeds 3.3V, the output voltage is connected directly to the input voltage via a pass-through function to maximize efficiency.
It is suitable for industrial, laboratory, and development applications involving power management and battery-operated devices.
The country of origin for the BU33UV7NUX evaluation board is India.
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