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LM2618BTLX/NOPB PDF预览

LM2618BTLX/NOPB

更新时间： 2024-11-10 10:44:39
品牌 Logo 应用领域
美国国家半导体 - NSC /
页数 文件大小 规格书
15页 428K
描述
IC,SMPS CONTROLLER,CURRENT/VOLTAGE,BGA,10PIN,PLASTIC

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LM2618BTLX/NOPB 技术参数

是否Rohs认证： 符合生命周期：Obsolete
包装说明：FBGA, BGA10,3X4,20Reach Compliance Code：compliant
风险等级：5.84控制模式：CURRENT/VOLTAGE-MODE
JESD-30 代码：R-PBGA-B10JESD-609代码：e1
湿度敏感等级：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：0.43 A封装主体材料：PLASTIC/EPOXY
封装代码：FBGA封装等效代码：BGA10,3X4,20
封装形状：RECTANGULAR封装形式：GRID ARRAY, FINE PITCH
认证状态：Not Qualified子类别：Switching Regulator or Controllers
表面贴装：YES最大切换频率：1000 kHz
温度等级：OTHER端子面层：Tin/Silver/Copper (Sn/Ag/Cu)
端子形式：BALL端子节距：0.5 mm
端子位置：BOTTOMBase Number Matches：1

LM2618BTLX/NOPB 数据手册

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September 2002  
LM2618  
400mA Sub-miniature, High Efficiency, Synchronous  
PWM & PFM Programmable DC-DC Converter  
General Description  
Key Specifications  
n Operates from a single LiION cell (2.8V to 5.5V)  
n Internal synchronous rectification provides high  
efficiency in both PWM and PFM  
The LM2618 step-down DC-DC converter is optimized for  
powering low voltage circuits from a single Lithium-Ion cell. It  
provides up to 400mA (300mA for B grade), over an input  
voltage range of 2.8V to 5.5V. Pin programmable output  
voltages of 1.80V, 1.83V, 1.87V or 1.92V allow adjustment  
for MPU voltage options without board redesign or external  
feedback resistors. Internal synchronous rectification pro-  
vides high efficiency in both PWM and PFM operation.  
n Pin programmable output voltage (1.80V, 1.83V, 1.87V  
and 1.92V)  
n 400mA maximum load capability (300mA for B grade)  
n
2% PWM mode DC output voltage precision  
n 5mV typ PWM mode output voltage ripple  
n 180 µA typ PFM mode quiescent current  
n 0.02µA typ shutdown mode current  
The device has three pin-selectable modes for maximizing  
battery life in mobile phones and similar portable applica-  
tions. Low-noise PWM mode offers 600kHz fixed-frequency  
operation to reduce interference in RF and data acquisition  
applications during full-power operation. A SYNC input al-  
lows synchronizing the switching frequency in a range of  
500kHz to 1MHz to avoid noise from intermodulation with  
system frequencies. Low-current hysteretic PFM mode re-  
duces quiescent current to 180 µA (typ.) during system  
standby. Shutdown mode turns the device off and reduces  
battery consumption to 0.02µA (typ.). Additional features  
include soft start and current overload protection.  
n Internal synchronous rectification for high efficiency  
(91% at 3.0VIN, 1.92VOUT  
)
n 600kHz PWM mode switching frequency  
n SYNC input for PWM mode frequency synchronization  
from 500kHz to 1MHz  
Features  
n Sub-miniature 10-pin micro SMD package  
n Only three tiny surface-mount external components  
required  
The LM2618 is available in a 10 pin micro SMD packge. This  
package uses National’s wafer level chip-scale micro SMD  
technology and offers the smallest possible size. Only three  
small external surface-mount components, an inductor and  
two ceramic capacitors are required.  
n Uses small ceramic capacitors.  
n Internal soft start  
n Current overload protection  
n Thermal Shutdown Protection  
n No external compensation required  
Applications  
n Mobile Phones  
n Hand-Held Radios  
n Battery Powered Devices  
Typical Application Circuit  
20036402  
© 2002 National Semiconductor Corporation  
DS200364  
www.national.com  
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