LM2991QML_TI 负低压降可调节稳压器

LM2991QML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：负低压降可调节稳压器
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LM2991QML的产品详情：

The LM2991 is a low dropout adjustable negative regulator with a output voltage range between −2V to −25V. The LM2991 provides up to 1A of load current and features a ^On /Off pin for remote shutdown capability.

The LM2991 uses new circuit design techniques to provide a low dropout voltage, low quiescent current and low temperature coefficient precision reference. The dropout voltage at 1A load current is typically 0.6V and a guaranteed worst-case maximum of 1V over the entire operating temperature range. The quiescent current is typically 1 mA with a 1A load current and an input-output voltage differential greater than 3V. A unique circuit design of the internal bias supply limits the quiescent current to only 9 mA (typical) when the regulator is in the dropout mode (V_O − V_I ≤ 3V).

The LM2991 is short-circuit proof, and thermal shutdown includes hysteresis to enhance the reliability of the device when inadvertently overloaded for extended periods.

LM2991QML的优势和特性：

Output voltage adjustable from ?2V to ?25V

Output current in excess of 1A

Dropout voltage typically 0.6V at 1A load

Low quiescent current

Internal short circuit current limit

Internal thermal shutdown with hysteresis

TTL, CMOS compatible ^ON/OFF switch

Functional complement to the LM2941 series

LM2991QML的参数（英文）：

Output options
Adjustable Output, Negative Output
Iout (Max) (A)
1
Vin (Max) (V)
0.3
Vin (Min) (V)
-26
Vout (Max) (V)
-3
Vout (Min) (V)
-24
Fixed output options (V)
0
Noise (uVrms)
200
Iq (Typ) (mA)
0.7
Thermal resistance θJA (°C/W)
28
Rating
Military
Load capacitance (Min) (μF)
1
Regulated outputs (#)
1
Features
Enable
Accuracy (%)
5
PSRR @ 100 KHz (dB)
22
Dropout voltage (Vdo) (Typ) (mV)
600
Operating temperature range (C)
-55 to 125, -40 to 85

LM2991QML具体的完整产品型号参数及价格（美元）：

LM2991QML的完整型号有：5962-9650502QXA、LM2991 MD8、LM2991 MWC、LM2991GW-QML，以下是这些产品的关键参数及官网采购报价：

5962-9650502QXA，工作温度：-55 to 125，封装：CFP (NAC)-16，包装数量MPQ：42个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：SNPB，TI官网5962-9650502QXA的批量USD价格：66.199（1000+）

LM2991 MD8，工作温度：-55 to 125，封装： (Y)-0，包装数量MPQ：140个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：Call TI，TI官网LM2991 MD8的批量USD价格：9.448（1000+）

LM2991 MWC，工作温度：-40 to 85，封装： (YS)-0，包装数量MPQ：1个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：Call TI，TI官网LM2991 MWC的批量USD价格：1.629（1000+）

LM2991GW-QML，工作温度：-55 to 125，封装：CFP (NAC)-16，包装数量MPQ：42个，MSL 等级/回流焊峰值温度：Level-1-NA-UNLIM，引脚镀层/焊球材料：SNPB，TI官网LM2991GW-QML的批量USD价格：66.199（1000+）

LM2991QML的评估套件：

LM2991QML的电路图解：

LM2991QML的评估套件：