LM4570开发板套件编程器的评估演示板及套件规格书PDF中文资料

LM4570属于开发板套件编程器的评估演示板及套件。由德州仪器制造生产的LM4570评估和演示板及套件该系列产品提供了一种方便的方法，在经过验证的实施环境中评估某些重点器件的性能或特性。评估方法通常有完善的文档说明，并且视乎具体情况由评估软件提供支持。产品通常由印刷电路板组成，板上已装有重点器件以及必要或有用的支持元器件，另外也可能包括其他组件，例如电缆或电源。对于数量特别多或类别独特的器件类别(如 ADC、DAC 和开关模式电源)，评估平台可组合为一个单独的产品系列。

1FEATURES

2• Output Short Circuit Protection

• High Output Current Capability

• Wide Output Voltage Range

• Fast Turn on Time

• Output Short Circuit Protection

• Low Power Shutdown Mode

• Minimum External Components

• Available in Space-Saving WSON Package

APPLICATIONS

• Mobile Phones

• PDAs

• Video Game Systems

KEY SPECIFICATIONS

• High Output Current @ VDD = 3V: 192 mA

• Fast Turn On Time @ 3V: 2.4 ms

• Quiescent Power Supply Current @ 3V: 1.9 mA

• Shutdown Current: 0.1 μA (Typ)

DESCRIPTION

The LM4570 is a single supply motor driver for

improved sensory experience in mobile phones and

other handheld devices. The LM4570 is capable of

driving up to 192mA while operating from a 3V

supply. Near rail-to-rail output swing under load

ensures sufficient voltage drive for most DC motors, while the differential output drive allows the voltage

polarity across the motor to be reversed quickly.

Reversing the voltage gives the LM4570 the ability to

drive a motor both clock-wise and counter clock-wise

from a single supply.

The LM4570 features fast turn on time, and a wide

input voltage range for precise speed control. A low power shutdown mode minimizes power

consumption.

Thermal and output short circuit protection prevents

the device from being damaged during fault

conditions.