LP38858_TI 1.5A、低输入电压 (0.98V)、高精度、超低压降稳压器

LP38858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：1.5A、低输入电压 (0.98V)、高精度、超低压降稳压器
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LP38858的产品详情：

The LP38858 is a high current, fast response regulator which can maintain output voltage regulation with extremely low input to output voltage drop. Fabricated on a CMOS process, the device operates from two input voltages: V_BIAS provides voltage to drive the gate of the N-MOS power transistor, while V_IN is the input voltage which supplies power to the load. The use of an external bias rail allows the part to operate from ultra low V_IN voltages. Unlike bipolar regulators, the CMOS architecture consumes extremely low quiescent current at any output load current. The use of an N-MOS power transistor results in wide bandwidth, yet minimum external capacitance is required to maintain loop stability.

The fast transient response of this device makes it suitable for use in powering DSP, Microcontroller Core voltages and Switch Mode Power Supply post regulators. The LP38858 is available in TO-220 and DDPAK/TO-263 5-Lead packages.

Dropout Voltage: 130mV (typical) at 1.5A load current.

Low Ground Pin Current: 10 mA (typical) at 1.5A load current.

Soft-Start: Programmable Soft-Start time.

Precision Output Voltage: ±1.0% for T_J = 25°C and ±2.0% for 0°C ≤ T_J ≤ +125°C, across all line and load conditions

LP38858的优势和特性：

Standard VOUT Values of 0.8V and 1.2V
Wide VBIAS Supply Operating Range of 3.0V to 5.5V
Stable with 10μF Ceramic Capacitors
Dropout Voltage of 130 mV (Typical) at 1.5A Load Current
Precision Output Voltage across All Line and Load Conditions:
- ±1.0% VOUT for TJ = 25°C
- ±2.0% VOUT for 0°C ≤ TJ ≤ +125°C
- ±3.0% VOUT for -40°C ≤ TJ ≤ +125°C
Over-Temperature and Over-Current Protection
Available in 5 Lead TO-220 and DDPAK/TO-263 Packages
Custom VOUT Values between 0.8V and 1.2V are Available
?40°C to +125°C Operating Temperature Range

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LP38858的参数（英文）：

Output options
Fixed Output
Iout (Max) (A)
1.5
Vin (Max) (V)
5.5
Vin (Min) (V)
0.98
Vout (Max) (V)
1.2
Vout (Min) (V)
1.2
Fixed output options (V)
1.2
Noise (uVrms)
150
Iq (Typ) (mA)
10
Thermal resistance θJA (°C/W)
60
Rating
Catalog
Load capacitance (Min) (μF)
10
Regulated outputs (#)
1
Features
Soft start
Accuracy (%)
1
PSRR @ 100 KHz (dB)
37
Dropout voltage (Vdo) (Typ) (mV)
180
Operating temperature range (C)
-40 to 125

LP38858具体的完整产品型号参数及价格（美元）：

LP38858的完整型号有：LP38858S-1.2/NOPB、LP38858SX-1.2/NOPB、LP38858T-1.2/NOPB，以下是这些产品的关键参数及官网采购报价：

LP38858S-1.2/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LP38858S-1.2/NOPB的批量USD价格：1.122（1000+）

LP38858SX-1.2/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LP38858SX-1.2/NOPB的批量USD价格：.935（1000+）

LP38858T-1.2/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LP38858T-1.2/NOPB的批量USD价格：.935（1000+）

LP38858的评估套件：

LP38858的电路图解：

LP38858的评估套件：