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參數(shù)資料
| 型號(hào)： | LQB08A |
| 廠商： | National Semiconductor Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | Single-Ended Input Motor Driver |
| 中文描述： | 單端輸入電機(jī)驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大小： | 616K |
| 代理商： | LQB08A |
LM4570
Single-Ended Input Motor Driver
General 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 shut-
down mode minimizes power consumption.
Thermal and output short circuit protection prevents the
device from being damaged during fault conditions.
Key Specifications
j
High Output Current
@
V
DD
= 3V
j
Fast Turn On Time
@
3V
j
Quiescent Power Supply Current
@
3V
j
Shutdown Current
192mA
2.4ms
1.9mA
0.1μA (typ)
Features
n
Output Short Circuit Protection
n
High Output Current Capability
n
Wide Output Voltage Range
n
Fast Turn on Time
n
Output Short Circuit Protection
n
Low Power Shutdown Mode
n
Minimum external components
n
Available in space-saving LLP package
Applications
n
Mobile Phones
n
PDAs
n
Video Game Systems
Typical Application
20186326
FIGURE 1. Typical Motor Driver Application Circuit
April 2006
L
2006 National Semiconductor Corporation
DS201863
www.national.com
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