The UC385 is a low dropout linear regulator providing a quick response to fast load changes. Combined with its precision onboard reference, the UC385 excels at driving GTL and BTL buses. Due to its fast response to load transients, the total capacitance required to decouple the regulator’s output can be significantly decreased when compared to standard LDO linear regulators.

Dropout voltage (VIN to VOUT) is only 490 mV maximum and 350 mV typical at 5-A load (0°C to 100°C).

The onboard bandgap reference is stable with temperature and scaled for a 1.2 V input to the internal power amplifier. The UC385 is available in fixed output voltages of 1.5 V, 2.1 V, or 2.5 V. The output voltage of the adjustable version can be set with two external resistors. If the external resistors are omitted, the output voltage defaults to 1.2 V.

• Fast Transient Response
• 10-mA to 5-A Load Current
• Short Circuit Protection
• Maximum Dropout of 500-mV at 5-A Load Current
• Separate Bias (VB) and VIN Pins
• Available in Adjustable or Fixed Output Voltages
• 5-Pin Package Allows Kelvin Sensing of Load Voltage
• Reverse Current Protection

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• Output options
• Adjustable Output, Fixed Output
• Iout (Max) (A)
• 5
• Vin (Max) (V)
• 7.5
• Vin (Min) (V)
• 1.7
• Vout (Max) (V)
• 6
• Vout (Min) (V)
• 1.2
• Fixed output options (V)
• 1.5, 2.1, 2.5
• Iq (Typ) (mA)
• 40
• Rating
• Catalog
• Load capacitance (Min) (μF)
• 100
• Regulated outputs (#)
• 1
• Features
• Reverse current protection
• Accuracy (%)
• 1.3
• PSRR @ 100 KHz (dB)
• 38
• Dropout voltage (Vdo) (Typ) (mV)
• 350
• Operating temperature range (C)
• -40 to 100, -40 to 85

UC285的完整型号有：UC285T-3、UC285T-ADJ、UC285TDKTTT-1、UC285TDKTTT-3、UC285TDKTTT-ADJ，以下是这些产品的关键参数及官网采购报价：

UC285T-3，工作温度：-40 to 85，封装：TO-220 (KC)-5，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网UC285T-3的批量USD价格：5.017（1000+）

UC285T-ADJ，工作温度：-40 to 100，封装：TO-220 (KC)-5，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：SN，TI官网UC285T-ADJ的批量USD价格：5.017（1000+）

UC285TDKTTT-1，工作温度：-40 to 85，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网UC285TDKTTT-1的批量USD价格：4.213（1000+）

UC285TDKTTT-3，工作温度：-40 to 85，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网UC285TDKTTT-3的批量USD价格：4.213（1000+）

UC285TDKTTT-ADJ，工作温度：-40 to 100，封装：DDPAK/TO-263 (KTT)-5，包装数量MPQ：50个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：SN，TI官网UC285TDKTTT-ADJ的批量USD价格：4.213（1000+）

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