LM4041 datasheet(3/16 Pages) MICREL

3 / 16 page

March 2005

M9999-031805

LM4040/4041

Micrel, Inc.

Absolute Maximum Ratings

Reverse Current ......................................................... 20mA

Forward Current ......................................................... 10mA

Maximum Output Voltage

LM4041-Adjustable.................................................... 15V

Power Dissipation at TA = 25°C (Note 2) ................306mW

Storage Temperature................................ –65°C to +150°C

Lead Temperature

Vapor phase (60 seconds)............................... +215°C

Infrared (15 seconds)....................................... +220°C

ESD Susceptibility

Human Body Model (

Note 3) ............................... 2kV

Machine Model (

Note 3) .................................... 200V

Operating Ratings (Notes 1 and 2)

Temperature Range

(TMIN ≤ TA ≤ TMAX)............................–40°C ≤ TA ≤ +85°C

Reverse Current

LM4040-2.5............................................60µA to 15mA

LM4040-4.1............................................68µA to 15mA

LM4040-5.0............................................74µA to 15mA

LM4041-1.2............................................60µA to 12mA

LM4041-ADJ..........................................60µA to 12mA

Output Voltage Range

LM4041-ADJ............................................1.24V to 10V

Functional Diagram

LM4040, LM4041 Fixed

Functional Diagram

LM4041 Adjustable

Note 1. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which

the device is functional, but do not guarantee speciﬁc performance limits. For guaranteed speciﬁcation and test conditions, see the “Electrical

Characteristics”. The guaranteed speciﬁcations apply only for the test conditions listed. Some performance characteristics may degrade when

the device is not operated under the listed test conditions.

Note 2. The maximum power dissipation must be derated at elevated temperatures and is dictated by TJMAX (maximum junction temperature), θJA

(junction to ambient thermal resistance), and TA (ambient temperature). The maximum allowable power dissipation at any temperature is PD-

MAX = (TJMAX – TA)/θJA or the number given in the Absolute Maximum Ratings, whichever is lower. For the LM4040 and LM4041,

TJMAX = 125°C, and the typical thermal resistance (θJA), when board mounted, is 326°C/W for the SOT-23 package.

Note 3. The human body model is a 100pF capacitor discharged through a 1.5kΩ resistor into each pin. The machine model is a 200pF capacitor

discharged directly into each pin.

VREF

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