LM2832XSD/NOPB集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

LM2832XSD/NOPB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LM2832XSD/NOPB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 3.0V to 5.5V

• Output Voltage Range of 0.6V to 4.5V

• 2.0A Output Current

• High Switching Frequencies

– 1.6MHz (LM2832X)

– 0.55MHz (LM2832Y)

– 3.0MHz (LM2832Z)

• 150mΩ PMOS Switch

• 0.6V, 2% Internal Voltage Reference

• Internal Soft-Start

• Current Mode, PWM Operation

• Thermal Shutdown

• Over Voltage Protection

APPLICATIONS

• Local 5V to Vcore Step-Down Converters

• Core Power in HDDs

• Set-Top Boxes

• USB Powered Devices

• DSL Modems

DESCRIPTION

The LM2832 regulator is a monolithic, high frequency,

PWM step-down DC/DC converter in a 6 Pin WSON

and a 8 Pin eMSOP-PowerPAD package. It provides

all the active functions to provide local DC/DC

conversion with fast transient response and accurate

regulation in the smallest possible PCB area. With a minimum of external components, the LM2832 is

easy to use. The ability to drive 2.0A loads with an

internal 150 mΩ PMOS switch using state-of-the-art

0.5 μm BiCMOS technology results in the best power

density available. The world-class control circuitry

allows on-times as low as 30ns, thus supporting

exceptionally high frequency conversion over the

entire 3V to 5.5V input operating range down to the

minimum output voltage of 0.6V. Switching frequency

is internally set to 550 kHz, 1.6 MHz, or 3.0 MHz,

allowing the use of extremely small surface mount

inductors and chip capacitors. Even though the

operating frequency is high, efficiencies up to 93%

are easy to achieve. External shutdown is included,

featuring an ultra-low stand-by current of 30 nA. The

LM2832 utilizes current-mode control and internal

compensation to provide high-performance regulation

over a wide range of operating conditions. Additional

features include internal soft-start circuitry to reduce

inrush current, pulse-by-pulse current limit, thermal

shutdown, and output over-voltage protection.