Datasheet > LM4040/1

LM4040/1

更新时间： 2024-10-27 23:47:03

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Precision Micropower Shunt Voltage Reference

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LM4040/1 数据手册

LM4040/4041

Micrel

LM4040/4041

Precision Micropower Shunt Voltage Reference

Final Information

General Description

Features

Ideal for space critical applications, the LM4040 and LM4041

precision voltage references are available in the subminia-

ture (3mm × 1.3mm) SOT-23 surface-mount package.

• Small SOT-23 package

• No output capacitor required

• Tolerates capacitive loads

• Fixed reverse breakdown voltages of 1.225, 2.500V,

4.096V and 5.000V

• Adjustable reverse breakdown version

• Contact Micrel for parts with extended temperature

range.

The LM4040 is the available in fixed reverse breakdown

voltages of 2.500V, 4.096V and 5.000V. The LM4041 is

available with a fixed 1.225V or an adjustable reverse break-

down voltage.

The LM4040 and LM4041’s advanced design eliminates the

need for an external stabilizing capacitor while ensuring

stability with any capacitive load, making them easy to use.

Key Specifications

• Output voltage tolerance (A grade, 25°C) .. ±0.1% (max)

The minimum operating current ranges from 60µA for the

LM4041-1.2 to 74µA for the LM4040-5.0. LM4040 versions

have a maximum operating current of 15mA. LM4041

versions have a maximum operating current of 12mA.

• Low output noise (10Hz to 100Hz)

LM4040 ................................................ 35µV

LM4041 ................................................ 20µV

• Wide operating current range

(typ)

RMS

LM4040 ................................................ 60µA to 15mA

LM4041 ................................................ 60µA to 12mA

• Industrial temperature range .................. –40°C to +85°C

• Low temperature coefficient ................100ppm/°C (max)

The LM4040 and LM4041 utilizes zener-zap reverse break-

down voltage trim during wafer sort to ensure that the prime

parts have an accuracy of better than ±0.1% (A grade) at

25°C. Bandgapreferencetemperaturedriftcurvaturecorrec-

tion and low dynamic impedance ensure stable reverse

breakdown voltage accuracy over a wide range of operating

temperatures and currents.

Applications

• Battery-Powered Equipment

• Data Acquisition Systems

• Instrumentation

• Process Control

• Energy Management

• Product Testing

• Automotive Electronics

• Precision Audio Components

Typical Applications

V_S

R_S

V_R

V_O

I_Q+ I_L

R_S

I_L

R₁

V_O

V_R

V_O= 1.233 (R₂/R₁+ 1)

LM4041

Adjustable

LM4040

LM4041

I_Q

R₂

Figure 1. LM4040, LM4041 Fixed

Shunt Regulator Application

Figure 2. LM4041 Adjustable

Shunt Regulator Application

Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com

January 2000

LM4040/4041

12 3 4 5 6 7...16

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与LM4040/1相关器件

型号	品牌	获取价格	描述	数据表
LM4040_05	NSC	获取价格	Precision Micropower Shunt Voltage Reference
LM4040_05	MICREL	获取价格	Precision Micropower Shunt Voltage Reference
LM4040_07	VISHAY	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040_07	TI	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040_07	ZETEX	获取价格	Precision micropower shunt voltage references
LM4040_08	ZETEX	获取价格	Precision micropower shunt voltage references
LM4040_08	TI	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040_10	TI	获取价格	PRECISION MICROPOWER SHUNT VOLTAGE REFERENCE
LM4040_14	MICREL	获取价格	Precision Micropower Shunt Voltage Reference
LM4040A	ONSEMI	获取价格	Precision Micro-Power Shunt Voltage References

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