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LP38843SX-1.2 PDF预览

LP38843SX-1.2

更新时间: 2024-11-14 03:00:07
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器电容器
页数 文件大小 规格书
11页 633K
描述
3A Ultra Low Dropout Linear Regulators Stable with Ceramic Output Capacitors

LP38843SX-1.2 技术参数

是否Rohs认证: 不符合生命周期:Transferred
包装说明:TO-263, 5 PINReach Compliance Code:not_compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:5.12可调性:FIXED
最大回动电压 1:0.5 V标称回动电压 1:0.21 V
最大绝对输入电压:6 V最大输入电压:5.5 V
最小输入电压:1.7 VJESD-30 代码:R-PSSO-G5
JESD-609代码:e0长度:10.16 mm
湿度敏感等级:3功能数量:1
输出次数:1端子数量:5
工作温度TJ-Max:150 °C工作温度TJ-Min:-40 °C
最大输出电流 1:3 A最大输出电压 1:1.236 V
最小输出电压 1:1.164 V标称输出电压 1:1.2 V
封装主体材料:PLASTIC/EPOXY封装代码:TO-263
封装等效代码:SMSIP5H,.6,67TB封装形状:RECTANGULAR
封装形式:SMALL OUTLINE包装方法:TAPE AND REEL
峰值回流温度(摄氏度):235认证状态:Not Qualified
调节器类型:FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR座面最大高度:4.8 mm
子类别:Other Regulators表面贴装:YES
技术:CMOS端子面层:Tin/Lead (Sn/Pb)
端子形式:GULL WING端子节距:1.7 mm
端子位置:SINGLE处于峰值回流温度下的最长时间:30
最大电压容差:3%宽度:8.635 mm
Base Number Matches:1

LP38843SX-1.2 数据手册

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December 2004  
LP38843  
3A Ultra Low Dropout Linear Regulators  
Stable with Ceramic Output Capacitors  
General Description  
Features  
n Ideal for conversion from 1.8V or 1.5V inputs  
n Designed for use with low ESR ceramic capacitors  
n 0.8V, 1.2V and 1.5V standard voltages available  
The LP38843 is a high-current, fast-response regulator  
which can maintain output voltage regulation with minimum  
input to output voltage drop. Fabricated on a CMOS process,  
the device operates from two input voltages: Vbias provides  
voltage to drive the gate of the N-MOS power transistor,  
while Vin is the input voltage which supplies power to the  
load. The use of an external bias rail allows the part to  
operate from ultra low Vin voltages. Unlike bipolar regula-  
tors, the CMOS architecture consumes extremely low quies-  
cent current at any output load current. The use of an  
N-MOS power transistor results in wide bandwidth, yet mini-  
mum external capacitance is required to maintain loop sta-  
bility.  
@
n Ultra low dropout voltage (210mV 3A typ)  
n 1.5% initial output accuracy  
n Load regulation of 0.1%/A (typical)  
n 30nA quiescent current in shutdown (typical)  
n Low ground pin current at all loads  
n Over temperature/over current protection  
n Available in 5 lead TO220 and TO263 packages  
n −40˚C to +125˚C junction temperature range  
The fast transient response of these devices makes them  
suitable for use in powering DSP, Microcontroller Core volt-  
ages and Switch Mode Power Supply post regulators. The  
parts are available in TO-220 and TO-263 packages.  
Applications  
n ASIC Power Supplies In:  
- Desktops, Notebooks, and Graphics Cards, Servers  
- Gaming Set Top Boxes, Printers and Copiers  
n Server Core and I/O Supplies  
@
Dropout Voltage: 210 mV (typ) 3A load current.  
Quiescent Current: 30 mA (typ) at full load.  
n DSP and FPGA Power Supplies  
n SMPS Post-Regulator  
Shutdown Current: 30 nA (typ) when S/D pin is low.  
Precision Output Voltage: 1.5% room temperature accu-  
racy.  
Typical Application Circuit  
20102901  
* Minimum value required if Tantalum capacitor is used (see Application Hints).  
© 2004 National Semiconductor Corporation  
DS201029  
www.national.com  

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