UCC384_TI 具有 0°C 至 70°C 工作温度范围的 500mA、负电压、可调节低压降稳压器

UCC384的基本参数

制造厂商：TI
产品类别：电源管理
技术类目：线性和低压降 (LDO) 稳压器
功能描述：具有 0°C 至 70°C 工作温度范围的 500mA、负电压、可调节低压降稳压器
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UCC384的产品详情：

The UCC384-x family of negative linear-series pass regulators is tailored for low-dropout applications where low-quiescent power is important. Fabricated with a BCDMOS technology ideally suited for low input-to-output differential applications, the UCC384-x passes 0.5 A while requiring only 0.2 V of input-voltage headroom. Dropout voltage decreases linearly with output current, so that dropout at 50 mA is less than 20 mV.

Quiescent current consumption for the device under normal (non-dropout) conditions is typically 200 uA. An integrated charge pump is internally enabled only when the device is operating near dropout with low VIN. This ensured that the device meets the dropout specifications even for maximum load current and a VIN of –3.2 V with only a modest increase in quiescent current. Quiescent current is always less than 350 uA, with the charge pump enabled. The quiescent current of the UCC384 does not increase with load current.

Short-circuit current is internally limited. The device responds to a sustained overcurrent condition by turning off after a t_ON delay. The device then stays off for a period, t_OFF, that is 40 times the t_ON delay. The device then begins pulsing on and off at the t_ON/t_OFF duty cycle of 2.5%. This drastically reduces the power dissipation during short circuit such that heat sinking, if at all required, must only accommodate normal operation. An external capacitor sets the on time. The off time is always 40 times t_ON.

The UCCx84-x can be shutdown to 45 uA (maximum) by pulling the SD/CT pin more positive than –0.7 V. To allow for simpler interfacing, the SD/CT pin may be pulled up to 6 V above the ground pin without turning on clamping diodes.

Internal power dissipation is further controlled with thermal-overload protection circuitry. Thermal shutdown occurs if the junction temperature exceeds 140°C. The chip remains off until the temperature has dropped 20°C (T_J = 120°C).

UCC384的优势和特性：

Precision Negative Series Pass Voltage Regulation
0.2 V Dropout at 0.5 A
Wide Input Voltage Range –3.2 V to –15 V
Low Quiescent Current Irrespective of Load
Simple Logic Shutdown Interfacing
–5 V, –12 V, and Adjustable Output
2.5% Duty Cycle Short Circuit Protection

UCC384的参数（英文）：

Output options
Adjustable Output, Fixed Output, Negative Output
Iout (Max) (A)
0.5
Vin (Max) (V)
-3.2
Vin (Min) (V)
-15
Vout (Max) (V)
-1.2
Vout (Min) (V)
-15
Fixed output options (V)
-5, -12
Noise (uVrms)
200
Iq (Typ) (mA)
0.2
Thermal resistance θJA (°C/W)
70
Rating
Catalog
Load capacitance (Min) (μF)
4.7
Regulated outputs (#)
1
Features
—
Accuracy (%)
2.5
Dropout voltage (Vdo) (Typ) (mV)
250
Operating temperature range (C)
0 to 70

UCC384具体的完整产品型号参数及价格（美元）：

UCC384的完整型号有：UCC384DP-12、UCC384DP-5、UCC384DP-ADJ、UCC384DPTR-12、UCC384DPTR-5、UCC384DPTR-ADJ，以下是这些产品的关键参数及官网采购报价：

UCC384DP-12，工作温度：PropertyValue，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DP-12的批量USD价格：3.078（1000+）

UCC384DP-5，工作温度：PropertyValue，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DP-5的批量USD价格：3.078（1000+）

UCC384DP-ADJ，工作温度：PropertyValue，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DP-ADJ的批量USD价格：3.078（1000+）

UCC384DPTR-12，工作温度：0 to 70，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DPTR-12的批量USD价格：2.605（1000+）

UCC384DPTR-5，工作温度：PropertyValue，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DPTR-5的批量USD价格：2.605（1000+）

UCC384DPTR-ADJ，工作温度：PropertyValue，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网UCC384DPTR-ADJ的批量USD价格：2.605（1000+）

UCC384的评估套件：

UCC384的电路图解：

UCC384的评估套件：