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LM2652

更新时间: 2024-02-02 07:18:48
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器
页数 文件大小 规格书
3页 474K
描述
1.5A, Dual High Performance Synchronous Buck Regulator

LM2652 技术参数

生命周期:Transferred包装说明:HTSSOP,
Reach Compliance Code:unknownECCN代码:EAR99
HTS代码:8542.39.00.01风险等级:5.69
模拟集成电路 - 其他类型:SWITCHING REGULATOR控制技术:PULSE WIDTH MODULATION
最大输入电压:5.5 V最小输入电压:2.7 V
JESD-30 代码:R-PDSO-G28长度:9.7 mm
功能数量:2端子数量:28
封装主体材料:PLASTIC/EPOXY封装代码:HTSSOP
封装形状:RECTANGULAR封装形式:SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
认证状态:Not Qualified座面最大高度:1.1 mm
表面贴装:YES切换器配置:BUCK
最大切换频率:1300 kHz端子形式:GULL WING
端子节距:0.65 mm端子位置:DUAL
宽度:4.4 mmBase Number Matches:1

LM2652 数据手册

 浏览型号LM2652的Datasheet PDF文件第2页浏览型号LM2652的Datasheet PDF文件第3页 
ADVANCE INFORMATION  
January 2005  
LM2652  
1.5A, Dual High Performance Synchronous Buck  
Regulator  
General Description  
Features  
n Dual 1.5 Amp outputs  
The LM2652 is a monolithic dual synchronous buck regula-  
tor designed for low output voltages. Special attention to  
power sequencing, voltage accuracy and start-up character-  
istics has been made to enable a simple solution to the  
challenging requirements of FPGA & DSP power. Four inte-  
grated FET power switches ensure high efficiency, minimal  
external components and maximum ease-of-use. The IC can  
accept an input of 2.7V to 5.5V and deliver 1.5A per channel.  
The bias and power inputs can run from different rails to  
balance system power. Output voltages are factory program-  
mable from 0.8V to 3.3V in 50mV steps. The LM2652 is  
available in two switching frequency options (650kHz and  
1300kHz) and both options can be synchronized to an ex-  
ternal clock of 300-1600kHz. The two switching channels run  
180˚ out of phase to reduce input capacitor size and cost.  
Output fault protection is provided by the use of cycle-by-  
cycle current limit and frequency fold-back. Separate soft-  
start, power good flags and output enables allow for power  
sequencing flexibility.  
n Output voltage factory set in 50mV steps from 0.8V to  
3.3V  
n Input voltage from 2.7V to 5.5V  
n 2% reference accuracy  
n 4 internal 80msynchronous switches  
n 180˚ out of phase operation  
n
Independent enables (CMOS compatible)  
n Separate Power Good flags  
n 650kHz or 1300kHz switching frequency  
n PLL synchronization to an external clock  
n
Programmable soft-start  
n Supports all-ceramic output capacitors  
n TSSOP-28 Exposed Pad package  
n Current limit and thermal shutdown protection  
Applications  
n Cable Modems  
n xDSL Modems  
n
DSP, FPGA and microprocessor power  
Local Regulation  
n
n Set-Top Box  
Typical Application  
20117201  
© 2005 National Semiconductor Corporation  
DS201172  
www.national.com  

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