LM1921

LM1921 NSC | Alldatasheet

Document overview

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Technical content

Features

Y Load connected to ground Y Low input-output voltage differential Y a60 volt positive transient protection Y b50 volt negative transient protection Y Automotive reverse battery protection Y Short circuit proof Y Internal thermal overload protection Y Unclamped output for fast decay times Y TTL, LSTTL, CMOS compatible input Y Plastic TO-220 package Y 100% electrical burn-in

Applications

Typical Application Circuit *Required for stability TL/H/5271–1 FIGURE 1. Test and Application Circuit C1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/Distributors for availability and specifications. Supply Voltage Operating Range 4.75V to 26V Overvoltage Protection (100 ms) b50V to a60V Internal Power Dissipation Internally Limited Operating Temperature Range b40§Ct o a125§C Maximum Junction Temperature 150 §C Storage Temperature Range b65§Ct o a150§C Lead Temp. (Soldering, 10 seconds) 230 §C Electrical Characteristics (VCCe12V, I OUTe500 mA, T Je25§C, V ON/OFFe2V, unless otherwise specified.) Tested Limits Design Limits Parameter Conditions Typ (Note 1) (Note 2) Units Min Max Min Max Supply Voltage Operational 4.75 26 6 24 V Survival b15 60 V DC Transient 100 ms, 1% Duty Cycle b50 V Supply Current VON/OFFe0 0.6 1.5 mA VON/OFFe2V I OUTe0 mA 6 10 mA IOUTe250 mA 285 350 mA IOUTe500 mA 575 700 mA IOUTe1A 1.3 1.5 A Input to Output I OUTe500 mA 0.5 0.8 V Voltage Drop I OUTe1A 1.0 V Short Circuit Current 1.4 1.0 2.0 A 6VsVCCs24V .75 3.0 A Output Leakage Current V ON/OFFe0 0.1 50 mA ON/OFF Voltage 1.3 0.8 2.0 V Threshhold 6V sVCCs24V 0.8 2.0 V ON/OFF Current 15 10 30 mA Overvoltage Shutdown 32 26 36 V Thermal Resistance junction-case ijc 3 §C/W case-ambient ica 50 §C/W Inductive Clamp Output Voltage V ON/OFFe0, I OUTe100 mA b60 b120 b45 V Fault Conditions Output Current ON/OFF Floating Pin 5 Open 0.1 50 mA Ground Floating Pi n 3 & Pin 4 Open 0.1 50 mA Reverse Voltage V CCeb15V b0.01 b1m A Reverse Transient V CCeb50V b100 mA Overvoltage V CCea 60V 0.01 1 mA Supply Current Pi n 1 & Pin 2 Short, No load 10 40 mA Note 1: Guaranteed and 100% production tested. Note 2: Guaranteed, not necessarily 100% production tested. Not used to calculate outgoing AQL . Limits are for the temperature range of b40§CsTjs150§C.

Typical Performance Characteristics Output Voltage Drop TL/H/5271–3 Device Operating Current TL/H/5271–4 Peak Output Current (V OUT) TL/H/5271–5 Output Voltage Drop TL/H/5271–6 Output Voltage (V OUT) TL/H/5271–7 Maximum Power Dissipation (TO-220) TL/H/5271–8 ON/OFF Current vs. Junction Temperature TL/H/5271–13 Threshold Voltage vs. Supply Voltage TL/H/5271–14 ON/OFF Current vs. ON/OFF Voltage TL/H/5271–15 Equivalent Block Diagram TL/H/5271–12 FIGURE 1

TL/H/5271–9

LM1921 1 Amp Industrial Switch Physical Dimensions inches (millimeters) 5-Lead TO-220 Power Package (T) Order Number LM1921T LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein: 1. Life support devices or systems are devices or 2. A critical component is any component of a life systems which, (a) are intended for surgical implant support device or system whose failure to perform can into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life failure to perform, when properly used in accordance support device or system, or to affect its safety or with instructions for use provided in the labeling, can effectiveness. be reasonably expected to result in a significant injury to the user. National Semiconductor National Semiconductor National Semiconductor National Semiconductor Corporation Europe Hong Kong Ltd. Japan Ltd.

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a49) 0-180-530 85 86 13th Floor, Straight Block, Tel: 81-043-299-2309 Arlington, TX 76017 Email: cnjwge @ tevm2.nsc.com Ocean Centre, 5 Canton Rd. Fax: 81-043-299-2408 Tel: 1(800) 272-9959 Deutsch Tel: ( a49) 0-180-530 85 85 Tsimshatsui, Kowloon Fax: 1(800) 737-7018 English Tel: ( a49) 0-180-532 78 32 Hong Kong Fran3ais Tel: ( a49) 0-180-532 93 58 Tel: (852) 2737-1600 Italiano Tel: ( a49) 0-180-534 16 80 Fax: (852) 2736-9960 National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.