LP38869_TI 具有使能功能的 1A、高 PSRR、超低压降稳压器

LP38869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：具有使能功能的 1A、高 PSRR、超低压降稳压器
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LP38869的产品详情：

The LP38869 low-dropout linear regulator operates with an input voltage supply from +2.7V to +5.5V input, and delivers a specified 1A load current with a low 200 mV dropout. The high 50 dB PSRR at 100 kHz results from a high gain control loop that also yields excellent transient response. Coupled with a high accuracy output voltage, ±0.75 % over temperature, the LP38869 is an ideal power supply for FPGAs, DSPs or MCUs. Output voltage is preset at +2.5V, or may be adjustable between +0.8V to +5V with an external resistor divider.

The LP38869 only needs 1 μF output capacitance for stability. The FlexCap compensation allows the use of any type of output capacitor, regardless of ESR. Other features include: Soft-Start; delayed reset output; low-power shutdown; short-circuit protection; and thermal shutdown protection

Ground Pin Current: Typically less than 1 mA at 1A load

Shutdown Mode: Typically 2 µA quiescent current when the SHDN pin is pulled low.

Simplified Compensation: Stable with any type of output capacitor.

LP38869的优势和特性：

Operating Input Supply Range: +2.7V to + 5.5V
Maximum Continuous Output Current: 1A
Preset Output Voltage of 2.5V, or Adjustable Output Voltage From 0.8V to 5.0V
Pre-Set Output Initial VOUT Tolerance ±0.5%
Adjustable VREF Tolerance of ±0.75%
PSRR of 50dB at 100kHz
Low 200 mV Dropout at 1A
Typical 2 μA Supply Current in Shutdown Mode
Adjustable Soft-Start for Output Current
Fold-Back Output Current Limit
Stable With Ceramic, Tantalum, or Aluminum Capacitors
Stable With 1uF Input/Output Capacitors
Thermal Shutdown
16-pin HTSSOP Package

All trademarks are the property of their respective owners.

LP38869的参数（英文）：

Output options
Fixed Output
Iout (Max) (A)
1
Vin (Max) (V)
5.5
Vin (Min) (V)
2.7
Vout (Max) (V)
2.5
Vout (Min) (V)
2.5
Fixed output options (V)
2.5
Noise (uVrms)
50
Iq (Typ) (mA)
0.6
Thermal resistance θJA (°C/W)
141
Rating
Catalog
Load capacitance (Min) (μF)
1
Regulated outputs (#)
1
Features
Enable, Soft start
Accuracy (%)
2
PSRR @ 100 KHz (dB)
50
Dropout voltage (Vdo) (Typ) (mV)
200
Operating temperature range (C)
-40 to 125

LP38869具体的完整产品型号参数及价格（美元）：

LP38869的完整型号有：LP38869MH/NOPB、LP38869MHE/NOPB、LP38869MHX/NOPB，以下是这些产品的关键参数及官网采购报价：

LP38869MH/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-16，包装数量MPQ：92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LP38869MH/NOPB的批量USD价格：1.195（1000+）

LP38869MHE/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-16，包装数量MPQ：250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LP38869MHE/NOPB的批量USD价格：1.195（1000+）

LP38869MHX/NOPB，工作温度：-40 to 125，封装：HTSSOP (PWP)-16，包装数量MPQ：2500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LP38869MHX/NOPB的批量USD价格：0.996（1000+）

LP38869的评估套件：

LP38869的电路图解：

LP38869的评估套件：