LP3872 - 1.5A 快速超低压降线性稳压器

LP3872是TI德州仪器公司的一款单通道LDO产品，LP3872是1.5A 快速超低压降线性稳压器，本站介绍了LP3872的封装应用图解、特点和优点、功能等，并给出了与LP3872相关的TI元器件型号供参考。

LP3872 - 1.5A 快速超低压降线性稳压器 - 单通道LDO - 线性稳压器(LDO) - 德州仪器

产品特性

Input Voltage Range: 2.5 V to 7 V
Ultra Low-Dropout Voltage
Low Ground Pin Current
Load Regulation of 0.06%
10-nA Quiescent Current in Shutdown Mode
Ensured Output Current of 1.5-A DC
Available in DDPAK/TO-263, TO-220, and SOT-223 Packages
Output Voltage Accuracy ± 1.5%
ERROR Flag for Output Status
Sense Option Improves Load Regulation
Minimum Output Capacitor Requirements
Overtemperature/Overcurrent Protection
−40°C to 125°C Junction Temperature Range

产品应用

Microprocessor Power Supplies
GTL, GTL+, BTL, and SSTL Bus Terminators
Power Supplies for DSPs
SCSI Terminators
Post Regulators
High Efficiency Linear Regulators
Battery Chargers
Other Battery-Powered Applications

LP3872 Typical Application Circuit

*SD and ERROR pins must be pulled high through a 10-kΩ pullup resistor. Connect the ERROR pin to ground if this function is not used. See the Shutdown Mode and ERROR Flag Operation sections.

产品说明

The LP387x series of fast ultra low-dropout linear regulators operate from a 2.5-V to 7-V 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 LP3872 and LP3875 are developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3872 and LP3875 to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low-dropout voltage; typically 38 mV at 150-mA load current and 380 mV at 1.5-A load current.

Ground Pin Current: Typically 6 mA at 1.5-A load current.

Shutdown Mode: Typically 10-nA quiescent current when the SD pin is pulled low.

ERROR Flag: ERROR flag goes low when the output voltage drops 10% below nominal value (LP3872 only).

SENSE: Sense pin improves regulation at remote loads (LP3875 only).

Precision Output Voltage: Multiple output voltage options are available ranging from 1.8 V to 5 V with a specified accuracy of ±1.5% at room temperature, and ±3.0% over all conditions (varying line, load, and temperature).

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
LP3872	SOT-223 (5)	6.50 mm × 3.56 mm
LP3872	TO-263 (5)	10.16 mm × 8.42 mm
LP3875	SOT-223 (5)	6.50 mm × 3.56 mm
	TO-263 (5)	10.16 mm × 8.42 mm
	TO-220 (5)	14.986 mm × 10.16 mm

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