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参数资料
| 型号： | LP3876 |
| 厂商： | National Semiconductor Corporation |
| 英文描述： | 3A Fast Ultra Low Dropout Linear Regulators |
| 中文描述： | 3A条快速超低压差线性稳压器 |
| 文件页数： | 1/16页 |
| 文件大小： | 365K |
| 代理商： | LP3876 |
LP3873/LP3876
3A Fast Ultra Low Dropout Linear Regulators
General Description
The LP3873/LP3876 series of fast ultra low-dropout linear
regulators operate from a +2.5V to +7.0V input supply. Wide
range of preset output voltage options are available. These
ultra low dropout linear regulators respond very quickly to
step changes in load, which makes them suitable for low
voltage microprocessor applications. The LP3873/LP3876
are developed on a CMOS process which allows low quies-
cent current operation independent of output load current.
This CMOS process also allows the LP3873/LP3876 to op-
erate under extremely low dropout conditions.
Dropout Voltage: Ultra low dropout voltage; typically 80mV
at 300mA load current and 800mV at 3A load current.
Ground Pin Current: Typically 6mA at 3A load current.
Shutdown Mode: Typically 1A quiescent current when the
shutdown pin is pulled low.
Error Flag: Error flag goes low when the output voltage
drops 10% below nominal value.
SENSE: Sense pin improves regulation at remote loads.
Precision Output Voltage: Multiple output voltage options
are available ranging from 1.8V to 5.0V with a guaranteed
accuracy of ±1.5% at room temperature, and ±3.0% over all
conditions (varying line, load, and temperature).
Features
n
Ultra low dropout voltage
n
Low ground pin current
n
Load regulation of 0.08%
n
1A quiescent current in shutdown mode
n
Guaranteed output current of 3A DC
n
Available in TO-263 and TO-220 packages
n
Output voltage accuracy ± 1.5%
n
Error flag indicates output status
n
Sense option improves load regulation
n
Minimum output capacitor requirements
n
Overtemperature/overcurrent protection
n
40C to +125C junction temperature range
Applications
n
Microprocessor power supplies
n
GTL, GTL+, BTL, and SSTL bus terminators
n
Power supplies for DSPs
n
SCSI terminator
n
Post regulators
n
High efficiency linear regulators
n
Battery chargers
n
Other battery powered applications
Typical Application Circuits
20060501
*SD and ERROR pins must be pulled high through a 10k
pull-up resistor. Connect the ERROR pin to ground if this function is not used. See application hints
for more information.
September 2003
LP3873/LP3876
3A
Fast
Ultra
Low
Dropout
Linear
Regulators
2003 National Semiconductor Corporation
DS200605
www.national.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LP3876-ADJ | 制造商:NSC 制造商全称:National Semiconductor 功能描述:3A Fast Ultra Low Dropout Linear Regulator |
| LP3876ES-1.8 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP3876ES-1.8/NOPB | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
| LP3876ES-1.8/NOPB | 制造商:Texas Instruments 功能描述:Voltage Regulator IC |
| LP3876ES-2.5 | 功能描述:低压差稳压器 - LDO RoHS:否 制造商:Texas Instruments 最大输入电压:36 V 输出电压:1.4 V to 20.5 V 回动电压（最大值）:307 mV 输出电流:1 A 负载调节:0.3 % 输出端数量: 输出类型:Fixed 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-20 |
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