The LP3855-ADJ fast ultra low-dropout linear regulators operate from a +2.5V to +7.0V input supply. These ultra low dropout linear regulators respond very quickly to step changes in load, which makes them suitable for low voltage microprocessor applications. The LP3855-ADJ is developed on a CMOS process which allows low quiescent current operation independent of output load current. This CMOS process also allows the LP3855-ADJ to operate under extremely low dropout conditions.

Dropout Voltage: Ultra low dropout voltage; typically 24mV at 150mA load current and 240mV at 1.5A load current.

Ground Pin Current: Typically 4mA at 1.5A load current.

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

Adjustable Output Voltage: The output voltage may be programmed via two external resistors.

• Ultra Low Dropout Voltage
• Stable with Selected Ceramic Capacitors
• Low Ground Pin Current
• Load Regulation of 0.06%
• 10nA Quiescent Current in Shutdown Mode
• Specified Output Current of 1.5A DC
• Available in DDPAK/TO-263, TO-220 and SOT-223 Packages
• Overtemperature/Overcurrent Protection
• 40°C to +125°C Junction Temperature Range

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• Output options
• Adjustable Output
• Iout (Max) (A)
• 1.5
• Vin (Max) (V)
• 7
• Vin (Min) (V)
• 2.5
• Vout (Max) (V)
• 6.6
• Vout (Min) (V)
• 1.23
• Noise (uVrms)
• 100
• Iq (Typ) (mA)
• 4
• Thermal resistance θJA (°C/W)
• 50
• Rating
• Catalog
• Load capacitance (Min) (F)
• 10
• Regulated outputs (#)
• 1
• Features
• Enable
• Accuracy (%)
• 2
• Dropout voltage (Vdo) (Typ) (mV)
• 240
• Operating temperature range (C)
• -40 to 125

LP3855-ADJ的完整型号有：LP3855EMP-ADJ/NOPB、LP3855EMPX-ADJ/NOPB、LP3855ES-ADJ/NOPB、LP3855ESX-ADJ/NOPB、LP3855ET-ADJ/NOPB，以下是这些产品的关键参数及官网采购报价：

LP3855EMP-ADJ/NOPB，工作温度：-40 to 125，封装：SOT-223 (NDC)-5，包装数量MPQ：1000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3855EMP-ADJ/NOPB的批量USD价格：2.442（1000+）

LP3855EMPX-ADJ/NOPB，工作温度：-40 to 125，封装：SOT-223 (NDC)-5，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3855EMPX-ADJ/NOPB的批量USD价格：2.035（1000+）

LP3855ES-ADJ/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP3855ES-ADJ/NOPB的批量USD价格：2.442（1000+）

LP3855ESX-ADJ/NOPB，工作温度：-40 to 125，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：500个，MSL 等级/回流焊峰值温度：Level-3-245C-168 HR，引脚镀层/焊球材料：SN，TI官网LP3855ESX-ADJ/NOPB的批量USD价格：2.035（1000+）

LP3855ET-ADJ/NOPB，工作温度：-40 to 125，封装：TO-220 (NDH)-5，包装数量MPQ：45个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：SN，TI官网LP3855ET-ADJ/NOPB的批量USD价格：2.035（1000+）