LMR62421集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

LMR62421属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的LMR62421稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

1FEATURES

2• 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

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.