LM4128集成电路（IC）的电压基准规格书PDF中文资料

LM4128属于集成电路（IC）的电压基准。由美国德州仪器公司制造生产的LM4128电压基准产品属于基准电压源系列，可通过相对较不稳定的电源提供稳定的电势，电压值始终保持恒定，以便在测量、控制和类似应用中用作比较的标准。其功能行为可能与用于大功率调节的线性稳压器相似，但基准电压源器件却不适合用于此类用途。用作比较标准时，若输出电流容量或实际负载电流增大，其性能通常会降低。

1FEATURES

2• Output Voltage Initial Accuracy 0.1%

• Low Temperature Coefficient 75 ppm/°C

• Low Supply Current, 60 μA

• Enable Pin Allowing a 3 μA Shutdown Mode

• Up to 20 mA Output Current

• Voltage Options 1.8V, 2.048V, 2.5V, 3.0V, 3.3V,

4.096V

• Custom Voltage Options Available (1.8V to

4.096V)

• VIN Range of VREF + 400 mV to 5.5V @10 mA

• Stable with Low ESR Ceramic Capacitors

• 5-Pin SOT-23 Package

• −40°C to 125°C Junction Temperature Range

• LM4128AQ/BQ/CQ/DQ are AEC-Q100 Grade 1

Qualified and are Manufactured on an

Automotive Grade Flow

APPLICATIONS

• Instrumentation & Process Control

• Test Equipment

• Data Acquisition Systems

• Base Stations

• Servo Systems

• Portable, Battery Powered Equipment

• Automotive & Industrial Electronics

• Precision Regulators

• Battery Chargers

• Communications

• Medical Equipment

DESCRIPTION

Ideal for space critical applications, the LM4128

precision voltage reference is available in the SOT-23

surface-mount package. The LM4128’s advanced

design eliminates the need for an external stabilizing

capacitor while ensuring stability with capacitive loads

up to 10 μF, thus making the LM4128 easy to use.

Series references provide lower power consumption

than shunt references, since they do not have to idle

the maximum possible load current under no load

conditions. This advantage, the low quiescent current

(60 μA), and the low dropout voltage (400 mV) make

the LM4128 ideal for battery-powered solutions.

The LM4128 is available in four grades (A, B, C, and

D) for greater flexibility. The best grade devices (A)

have an initial accuracy of 0.1% with ensured

temperature coefficient of 75 ppm/°C or less, while

the lowest grade parts (D) have an initial accuracy of

1.0% and a tempco of 100 ppm/°C.