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LP38858T-0.8 PDF预览

LP38858T-0.8

更新时间： 2024-11-14 03:03:23
品牌 Logo 应用领域
美国国家半导体 - NSC 稳压器软启动
页数 文件大小 规格书
14页 362K
描述
1.5A Fast-Response High-Accuracy LDO Linear Regulator with Soft-Start

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LP38858T-0.8 技术参数

是否Rohs认证： 不符合生命周期：Transferred
包装说明：TO-220, 5 PINReach Compliance Code：not_compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.37可调性：FIXED
最大回动电压 1：0.18 V标称回动电压 1：0.13 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：0.98 VJESD-30 代码：R-PSFM-T5
JESD-609代码：e0湿度敏感等级：1
功能数量：1输出次数：1
端子数量：5工作温度TJ-Max：125 °C
工作温度TJ-Min：-40 °C最大输出电流 1：1.5 A
最大输出电压 1：0.824 V最小输出电压 1：0.776 V
标称输出电压 1：0.8 V封装主体材料：PLASTIC/EPOXY
封装代码：ZIP封装等效代码：ZIP5,.15,.17,67TB
封装形状：RECTANGULAR封装形式：FLANGE MOUNT
包装方法：RAIL认证状态：Not Qualified
调节器类型：FIXED POSITIVE SINGLE OUTPUT LDO REGULATOR子类别：Other Regulators
表面贴装：NO技术：CMOS
端子面层：Tin/Lead (Sn/Pb)端子形式：THROUGH-HOLE
端子节距：1.7 mm端子位置：SINGLE
最大电压容差：3%Base Number Matches：1

LP38858T-0.8 数据手册

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November 2006  
LP38858  
1.5A Fast-Response High-Accuracy LDO Linear Regulator  
with Soft-Start  
General Description  
Features  
The LP38858 is a high current, fast response regulator which  
can maintain output voltage regulation with extremely low in-  
put 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 regulators, the CMOS archi-  
tecture consumes extremely low quiescent current at any  
output load current. The use of an N-MOS power transistor  
results in wide bandwidth, yet minimum external capacitance  
is required to maintain loop stability.  
Standard VOUT values of 0.8V and 1.2V  
■
■
■
■
Wide VBIAS Supply operating range of 3.0V to 5.5V  
Stable with 10µF Ceramic capacitors  
Dropout voltage of 130 mV (typical) at 1.5A load current  
Precision Output Voltage across all line and load  
conditions:  
■
±1.0% VOUT for TJ = 25°C  
—
—
—
±2.0% VOUT for 0°C ≤ TJ ≤ +125°C  
±3.0% VOUT for -40°C ≤ TJ ≤ +125°C  
Over-Temperature and Over-Current protection  
Available in 5 lead TO-220 and TO-263 packages  
Custom VOUT values between 0.8V and 1.2V are available  
−40°C to +125°C Operating Temperature Range  
■
■
■
■
The fast transient response of this device makes it suitable  
for use in powering DSP, Microcontroller Core voltages and  
Switch Mode Power Supply post regulators. The LP38858 is  
available in TO-220 and TO-263 5-Lead packages.  
Dropout Voltage: 130mV (typical) at 1.5A load current.  
Low Ground Pin Current: 14 mA (typical) at 1.5A load cur-  
rent.  
Applications  
ASIC Power Supplies In:  
■
- Desktops, Notebooks, and Graphics Cards, Servers  
- Gaming Set Top Boxes, Printers and Copiers  
Soft-Start: Programmable Soft-Start time.  
Precision Output Voltage: ±1.0% for TJ = 25°C and ±2.0%  
for 0°C ≤ TJ ≤ +125°C, across all line and load conditions  
Server Core and I/O Supplies  
■
■
■
DSP and FPGA Power Supplies  
SMPS Post-Regulator  
Typical Application Circuit  
20202701  
© 2007 National Semiconductor Corporation  
202027  
www.national.com  
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