LM4041 1.225V Precision micropower shunt voltage reference Description The LM4041 is a bandgap circuit designed to achieve a precision micro-power voltage reference of 1.225 V. The device is available in the small outline SOT23 surface mount packages which is ideal for applications where space saving is important. The device has been designed to be highly tolerant of capacitive loads so maintaining excellent stability. This device offers a pin for pin compatible alternative to the LM4041 voltage reference. The LM4041 is available to 0.5% C grade for precision applications. Excellent performance is maintained over the 60A to 12mA operating current range with a typical temperature coefficient of only 20ppm/°C. Features Applications • Small packages: SOT23 • Battery powered equipment • No output capacitor required • Precision power supplies • Output voltage tolerance • Portable instrumentation • LM4041C ±0.5% at 25°C • Portable communications devices • LM4041D ±1% at 25°C • Notebook and palmtop computers • Data acquisition systems • Low output noise (10 Hz to 10kHz) ........... 60Vrms • Wide operating current range 60A to 12mA • Extended temperature range -40°C to +125°C • Low temperature coefficient 100ppm/°C (max) Pinout information LM4041_12F (SOT23) Cathode 1 3 * Anode 2 Top view * Pin 3 must be left floating or connected to pin 2 Ordering information 25°C tol. Voltage (V) Order code Pack Part mark Status Reel size Tape width QuantIty per reel 0.5% 1.225 LM4041CFTA SOT23 R1C Preview 7”, 180mm 8mm 3000 1% 1.225 LM4041DFTA SOT23 R1D Preview 7”, 180mm 8mm 3000 Issue 3 - February 2007 © Zetex Semiconductors plc 2007 1 www.zetex.com LM4041 Absolute maximum ratings Continuous reverse current (IKA) .................................... 20mA Continuous forward current (IREF) .................................. 10mA Operating junction temperature ..................................... -40°C to 150°C Storage temperature ....................................................... -55°C to 150°C Operation above the absolute maximum rating may cause device failure. Operation at the absolute maximum ratings, for extended periods, may reduce device reliability. Unless otherwise stated voltages specified are relative to the ANODE pin. Package thermal data Package ⍜JA PDIS Tamb =25°C, TJ = 150°C SOT23 380°C/W 330mW Recommended operating conditions Min. Max. Units Reverse current 0.06 15 mA Operating ambient temperature range -40 125 °C Issue 3 - February 2007 © Zetex Semiconductors plc 2007 2 www.zetex.com LM4041 Electrical characteristics Over recommended operating conditions, Tamb = 25°C, unless otherwise stated. LM4041C and LM4041D have initial tolerances of 0.5% and 1% respectively. Symbol Parameter Conditions Tamb Reverse breakdown voltage VREF IRMIN Reverse breakdown voltage tolerance IR = 100 A IR = 100A Minimum operating current 25°C Typ. LM4041C LM4041D Units Limits Limits 1.225 25°C ±6 ±12 -40 to 85°C ±14 ±24 -40 to 125°C ±18.4 ±31 25°C 60 65 65 70 68 73 ±100 ±150 1.5 2.0 2.0 2.5 -40 to 125°C 2.0 2.5 25°C 6.0 8.0 8.0 10.0 8.0 10.0 1.5 2.0 -40 to 85°C 45 -40 to 125°C IR = 10 mA -40 to 125°C Average reverse IR = 1 mA, ⌬VR/⌬T breakdown voltage temperature coefficient IR = 100 A ⌬VR/⌬IR Reverse breakdown change with current 1mA < IR < 12 mA -40 to 85°C -40 to 85°C mV µA ±20 ±15 ppm/°C ±15 25°C IRMIN < IR < 1mA V 0.7 2.5 -40 to 125°C mV ⍀ ZR Dynamic output impedance IR = 1mA, f = 120Hz IAC = 0.1IR 0.5 en Noise voltage IR = 100A 10Hz < f < 10kHz 60 VRMS 120 ppm ⌬VR Long term stability (non t = 1000Hrs cumulative) IR = 100A Issue 3 - February 2007 © Zetex Semiconductors plc 2007 3 www.zetex.com LM4041 Package outline - SOT23 E e e1 b 3 leads L1 D E1 A L A1 Dim. c Millimeters Inches Dim. Millimeters Min. Max. Min. Max. A - 1.12 - 0.044 e1 A1 0.01 0.10 0.0004 0.004 E 2.10 2.64 0.083 0.104 b 0.30 0.50 0.012 0.020 E1 1.20 1.40 0.047 0.055 C 0.085 0.120 0.003 0.008 L 0.25 0.62 0.018 0.024 D 2.80 3.04 0.110 0.120 L1 0.45 0.62 0.018 0.024 - - - - - e 0.95 NOM Min. 0.0375 NOM Max. Inches 1.90 NOM Max. Max. 0.075 NOM Note: Controlling dimensions are in millimeters. Approximate dimensions are provided in inches Issue 3 - February 2007 © Zetex Semiconductors plc 2007 4 www.zetex.com LM4041 Intentionally left blank Issue 3 - February 2007 © Zetex Semiconductors plc 2007 5 www.zetex.com LM4041 Definitions Product change Zetex Semiconductors reserves the right to alter, without notice, specifications, design, price or conditions of supply of any product or service. Customers are solely responsible for obtaining the latest relevant information before placing orders. Applications disclaimer The circuits in this design/application note are offered as design ideas. It is the responsibility of the user to ensure that the circuit is fit for the user’s application and meets with the user’s requirements. No representation or warranty is given and no liability whatsoever is assumed by Zetex with respect to the accuracy or use of such information, or infringement of patents or other intellectual property rights arising from such use or otherwise. Zetex does not assume any legal responsibility or will not be held legally liable (whether in contract, tort (including negligence), breach of statutory duty, restriction or otherwise) for any damages, loss of profit, business, contract, opportunity or consequential loss in the use of these circuit applications, under any circumstances. Life support Zetex products are specifically not authorized for use as critical components in life support devices or systems without the express written approval of the Chief Executive Officer of Zetex Semiconductors plc. As used herein: A. Life support devices or systems are devices or systems which: 1. are intended to implant into the body or 2. support or sustain life and whose failure to perform when properly used in accordance with instructions for use provided in the labelling can be reasonably expected to result in significant injury to the user. B. A critical component is any component in a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or to affect its safety or effectiveness. Reproduction The product specifications contained in this publication are issued to provide outline information only which (unless agreed by the company in writing) may not be used, applied or reproduced for any purpose or form part of any order or contract or be regarded as a representation relating to the products or services concerned. Terms and Conditions All products are sold subjects to Zetex’ terms and conditions of sale, and this disclaimer (save in the event of a conflict between the two when the terms of the contract shall prevail) according to region, supplied at the time of order acknowledgement. For the latest information on technology, delivery terms and conditions and prices, please contact your nearest Zetex sales office or visit: www.zetex.com Quality of product Zetex is an ISO 9001 and TS16949 certified semiconductor manufacturer. To ensure quality of service and products we strongly advise the purchase of parts directly from Zetex Semiconductors or one of our regionally authorized distributors. For a complete listing of authorized distributors please visit: www.zetex.com/salesnetwork Zetex Semiconductors does not warrant or accept any liability whatsoever in respect of any parts purchased through unauthorized sales channels. ESD (Electrostatic discharge) Semiconductor devices are susceptible to damage by ESD. Suitable precautions should be taken when handling and transporting devices. The possible damage to devices depends on the circumstances of the handling and transporting, and the nature of the device. The extent of damage can vary from immediate functional or parametric malfunction to degradation of function or performance in use over time. Devices suspected of being affected should be replaced. Green compliance Zetex Semiconductors is committed to environmental excellence in all aspects of its operations which includes meeting or exceeding regulatory requirements with respect to the use of hazardous substances. Numerous successful programs have been implemented to reduce the use of hazardous substances and/or emissions. All Zetex components are compliant with the RoHS directive, and through this it is supporting its customers in their compliance with WEEE and ELV directives. Product status key: “Preview” Future device intended for production at some point. Samples may be available “Active” Product status recommended for new designs “Last time buy (LTB)” Device will be discontinued and last time buy period and delivery is in effect “Not recommended for new designs” Device is still in production to support existing designs and production “Obsolete” Production has been discontinued Datasheet status key: “Draft version” This term denotes a very early datasheet version and contains highly provisional information, which may change in any manner without notice. “Provisional version” This term denotes a pre-release datasheet. It provides a clear indication of anticipated performance. However, changes to the test conditions and specifications may occur, at any time and without notice. “Issue” This term denotes an issued datasheet containing finalized specifications. However, changes to specifications may occur, at any time and without notice. Zetex sales offices Europe Americas Asia Pacific Corporate Headquarters Zetex GmbH Kustermann-park Balanstraße 59 D-81541 München Germany Telefon: (49) 89 45 49 49 0 Fax: (49) 89 45 49 49 49 [email protected] Zetex Inc 700 Veterans Memorial Highway Hauppauge, NY 11788 USA Zetex (Asia Ltd) 3701-04 Metroplaza Tower 1 Hing Fong Road, Kwai Fong Hong Kong Zetex Semiconductors plc Zetex Technology Park, Chadderton Oldham, OL9 9LL United Kingdom Telephone: (1) 631 360 2222 Fax: (1) 631 360 8222 [email protected] Telephone: (852) 26100 611 Fax: (852) 24250 494 [email protected] Telephone: (44) 161 622 4444 Fax: (44) 161 622 4446 [email protected] © 2006 Published by Zetex Semiconductors plc Issue 3 - February 2007 © Zetex Semiconductors plc 2007 6 www.zetex.com