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LM2608ATLX-1.8 PDF预览

LM2608ATLX-1.8

更新时间： 2024-11-22 22:30:47
品牌 Logo 应用领域
美国国家半导体 - NSC 转换器开关
页数 文件大小 规格书
18页 724K
描述
400mA Sub-miniature, High Efficiency, Programmable DC-DC Converter with Linear Mode

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LM2608ATLX-1.8 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：MICRO, SMD-10Reach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.21模拟集成电路 - 其他类型：SWITCHING REGULATOR
控制模式：CURRENT-MODE控制技术：PULSE WIDTH MODULATION
最大输入电压：5.5 V最小输入电压：2.8 V
标称输入电压：3.6 VJESD-30 代码：R-PBGA-B10
JESD-609代码：e0长度：2.504 mm
湿度敏感等级：1功能数量：1
端子数量：10最高工作温度：85 °C
最低工作温度：-25 °C最大输出电流：0.69 A
封装主体材料：PLASTIC/EPOXY封装代码：VFBGA
封装等效代码：BGA10,3X4,20封装形状：RECTANGULAR
封装形式：GRID ARRAY, VERY THIN PROFILE, FINE PITCH峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：0.675 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：BUCK最大切换频率：690 kHz
温度等级：OTHER端子面层：Tin/Lead (Sn63Pb37)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOM处于峰值回流温度下的最长时间：40
宽度：2.25 mmBase Number Matches：1

LM2608ATLX-1.8 数据手册

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December 2002  
LM2608  
400mA Sub-miniature, High Efficiency, Programmable  
DC-DC Converter with Linear Mode  
General Description  
Key Specifications  
n Operates from a single LiION cell (2.8V to 5.5V)  
n Pin selectable output voltage (1.5V/1.8V or 1.3V/1.5V  
versions), without external feedback resistors  
n 400mA maximum load capability  
The LM2608 step-down DC-DC converter is optimized for  
powering ultra-low voltage circuits from a single Lithium-Ion  
cell. It provides up to 400mA over an input voltage range of  
2.8V to 5.5V. Operating from a 1.35V reference, this device  
provides pin-selectable output voltages of 1.3V/1.5V  
(300mA) for low voltage version or 1.5V/1.8V (400mA) for  
high voltage version. This allows adjustment for DSP or CPU  
voltage options, as well as dynamic output voltage switching  
for reduced power consumption. Internal synchronous recti-  
fication provides high efficiency.  
n
1% PWM mode DC output voltage precision  
(Excluding external reference tolerance)  
n 5mV typ PWM mode output voltage ripple  
n 20 µA typ quiescent current (Linear Mode)  
n 0.02µA typ shutdown mode current  
n Internal synchronous rectification for high efficiency  
The LM2608 offers superior features and performance for  
mobile phones and similar portable applications with com-  
plex power management systems. Pin-selectable PWM low-  
noise and linear micropower modes offer improved system  
control for maximizing battery life. During full power opera-  
tion, fixed-frequency PWM mode reduces interference in RF  
and data acquisition applications by minimizing noise har-  
monics at sensitive IF and sampling frequencies. A SYNC  
input allows synchronizing the switching frequency in a  
range of 500kHz to 1MHz to avoid noise from intermodula-  
tion with system frequencies. Linear operation reduces qui-  
escent current to 20µA (typ) during system standby for ex-  
tended battery life. It provides up to 3 mA in the linear mode.  
Shutdown reduces battery consumption to 0.02µA (typ.).  
(91% at 2.8VIN, 1.8VOUT  
)
n 600kHz PWM mode switching frequency  
n SYNC input for PWM mode frequency synchronization  
from 500kHz to 1MHz  
n 15% accuracy for FOSC and Ilim  
Features  
n Sub-miniature 10-pin thin Micro SMD package  
n Only four tiny surface-mount external components  
required  
n Uses small ceramic capacitors  
n Internal soft start  
n Current and Thermal shutdown protection  
n No external compensation required  
The LM2608 is available in a 10 pin Micro SMD package.  
This package uses National’s wafer level chip-scale Micro  
SMD technology and offers the smallest possible size. A high  
switching frequency (600KHz) allows use of tiny surface- Applications  
mount components. Only four small external surface-mount  
components, an inductor and three ceramic capacitors are  
required. Pin selectable output voltage eliminates the need  
for bulky external feedback resistors.  
n Mobile Phones  
n Hand-Held Radios  
n Battery Powered Devices  
Typical Application Circuit  
20036602  
© 2003 National Semiconductor Corporation  
DS200366  
www.national.com  
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