LM5164 - 100V, 1A DC-DC Buck Converter
Texas Instruments introduced a wide-input-voltage (VIN) synchronous DC-DC buck converter with best combination of light load efficiency, ease of design and overall power solution cost. The 100V, 1A LM5164 step-down voltage converter shrinks board space in rugged battery-powered industrial and automotive power supplies.
The LM5164 is an easy-to-use, ultra-low quiescent current (IQ) synchronous step-down buck regulator that features a constant on-time (COT) control architecture and integrates high- and low-side power MOSFETs. The highly efficient buck converter operates from a wide input voltage of 6V to 100V and delivers up to a 1A DC load current. The COT architecture requires no external compensation, while an internal VCC bias supply and bootstrap diode eliminates an additional capacitor.
The LM5164-Q1 is another variant for automotive-grade buck converter. The LM5164 and LM5164-Q1 join TI’s portfolio of highly integrated, wide VIN DC/DC converters that enable designers to maximize power delivery in the smallest package possible.
Key features and benefits of the LM5164
- Shrink board space: The new device’s thermally efficient, small-outline integrated circuit (SOIC) PowerPAD™ package measures 5 mm by 6 mm, which is 30 percent smaller than competitive offerings. Designers can use the LM5164 to create a complete power-supply design in 105 mm2, which is more than 10 percent smaller than competitive offerings.
- Highest light load efficiency: The LM5164 offers very low 10-µA typical standby quiescent current. This enables 10 percent better light load efficiency for 24-V to 5-V conversions with a 1-mA load and extends battery life compared to competitive solutions.
- Simple, cost-effective design: A standard 8-pin SOIC package, few external components and WEBENCH Power Designer simplify design and reduce cost.
Pricing and availability Available through the TI store and authorized distributors, the 100V LM5164 and LM5164-Q1 are priced in small reels at US$1.53 and US$2.04, respectively, for 1,000-unit quantities. The LM5164-Q1EVM-041 evaluation module is available for US$75.