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STMICROELECTRONICS STBB3JR High Efficiency Buck-Boost Converter

The STBB3J is a high efficiency, dual mode buck-boost converter ideal for battery-powered devices. It seamlessly switches between buck and boost modes, offering input voltage from 1.8 V to 5.5 V and delivering up to 2A in buck mode. It features high efficiency over 94%, soft-start, thermal shutdown, current limit protections, and adjustable output voltage from 1.2 V to 5.5 V. Packaged in Flip Chip 20 bumps, it is suitable for portable electronics like smartphones, tablets, and digital cameras, providing reliable power regulation in compact designs.

Authorized Distributors
Source:DigiKey
Part No:STBB3JR
Stock:1210
Inv Date:06-11-2026
Price: Unit price: $3.64
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Part No:STBB3JR
Stock:394
Inv Date:06-12-2026
Price: Unit price: $3.14
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Part No:STBB3JR
Stock:0
Inv Date:06-11-2026
Price: Unit price: $1.88
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Part No:STBB3JR
Stock:60000
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS STBB3JR High Efficiency Buck-Boost Converter Specifications:

  • Input Voltage Range: 1.8 V to 5.5 V
  • Output Current: 2 A (buck mode), 800 mA (boost mode)
  • Output Voltage: 1.2 V to 5.5 V (adjustable)
  • Efficiency: >94% typical
  • Switching Frequency: Fixed at 2.0 MHz, adjustable up to 2.4 MHz
  • Package: Flip Chip 20 bumps, pitch = 0.4 mm
  • Thermal Shutdown: Yes
  • Soft-start: Yes
  • Protection: Overtemperature, current limit, undervoltage lockout
  • Quiescent Current: <50 pA
  • Shutdown Current: <1 μA
  • Operation: Dual mode (automatic transition between buck and boost, PWM or power save modes), external synchronization possible

Buy the Buy STMicroelectronics STBB3JR Part Number STBB3JR Online

Purchase the STMicroelectronics STBB3JR buck-boost converter online today to power your portable devices with high efficiency and reliable regulation. Designed for battery-powered applications, it supports input voltages from 1.8 V to 5.5 V and provides adjustable output from 1.2 V to 5.5 V, delivering up to 2A in buck mode. Featuring soft-start, thermal shutdown, and overtemperature protection, this compact Flip Chip package offers excellent thermal and electrical performance. Ideal for smartphones, tablets, and digital cameras, order now for quick delivery and enhanced power management.

Get STMicroelectronics STBB3JR today—built for high efficiency, dual mode power regulation, and reliable performance in portable electronics.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS STBB3JR?

You can click on the BUY or RFQ button to purchase STBB3JR from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part STBB3JR?

You can download the STBB3JR datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of STBB3JR?

STMICROELECTRONICS

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