LMR62421XMF/NOPB LMR62421XMFX Power Regulator IC Switching Voltage Regulators SIMPLE SWITCHER 24V out,2.1A SU Vltg Reg

LMR62421XMF/NOPB LMR62421XMFX Power Regulator IC Switching Voltage Regulators SIMPLE SWITCHER 24V out,2.1A SU Vltg Reg

FEATURES

• Input Voltage Range of 2.7V to 5.5V

• Output Voltage up to 24V

• Switch Current up to 2.1A

• 1.6 MHz Switching Frequency

• Low Shutdown Iq, 80 nA

• Cycle-by-Cycle Current Limiting

• Internally Compensated

• Internal Soft-Start

• 5-Pin SOT-23 (2.92 x 2.84 x 1mm) and 6-Pin WSON (3 x 3 x 0.8 mm) Packaging

• Fully Enabled for WEBENCH® Power Designer

   

PERFORMANCE BENEFITS

• Extremely Easy to Use

• Tiny Overall Solution Reduces System Cost

   

APPLICATIONS

• Boost / SEPIC Conversions from 3.3V, 5V Rails

• Space Constrained Applications

• Embedded Systems

• LCD Displays

• LED Applications

  System Performance

DESCRIPTION

The LMR62421 is an easy-to-use, space-efficient 2.1A low-side switch regulator ideal for Boost and SEPIC DC-DC regulation. It provides all the active functions to provide local DC/DC conversion with fast- transient response and accurate regulation in the smallest PCB area. Switching frequency is internally set to 1.6 MHz, allowing the use of extremely small surface mount inductor and chip capacitors while providing efficiencies near 90%. Current-mode control and internal compensation provide ease-of-use, minimal component count, and high-performance regulation over a wide range of operating conditions. External shutdown features an ultra-low standby current of 80 nA ideal for portable applications. Tiny 5-pin SOT-23 and 6-pin WSON packages provide space-savings. Additional features include internal soft-start, circuitry to reduce inrush current, pulse-by- pulse current limit, and thermal shutdown.