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LM3421 Datasheet(PDF) 6 Page - Texas Instruments |
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LM3421 Datasheet(HTML) 6 Page - Texas Instruments |
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6 / 72 page  LM3421, LM3421-Q1, LM3423, LM3423-Q1 SNVS574F – JULY 2008 – REVISED JULY 2015 www.ti.com 6.5 Electrical Characteristics MIN and MAX limits apply for TJ = −40°C to 150°C for LM3421Q0/LM3423Q0, TJ = −40°C to 125°C for all others, unless otherwise specified. Specifications that differ between the two operating ranges will be identified in the Temp Range column as Q0 for TJ = −40°C to 150°C and as Q1 for TJ = −40°C to 125°C. If no temperature range is indicated then the specification holds for both Q1 and Q0. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless otherwise stated the following condition applies: VIN = 14 V. TEMP PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT RANGE START-UP REGULATOR VCCREG VCC Regulation ICC = 0 mA 6.3 6.9 7.35 V ICCLIM VCC Current Limit VCC = 0 V 20 25 mA Q1 2 3 mA IQ Quiescent Current EN = 3 V, Static Q0 2 3.5 mA ISD Shutdown Current EN = 0 V 0.1 1 µA VCC SUPPLY VCC Increasing 4.17 4.5 V VCCUV VCC UVLO Threshold VCC Decreasing 3.7 4.08 V VCCHYS VCC UVLO Hysteresis 0.1 V EN THRESHOLDS Q1 1.75 2.4 V EN Increasing ENST EN Start-up Threshold Q0 1.75 2.75 V EN Decreasing 0.8 1.63 V ENSTHYS EN Start-up Hysteresis 0.1 V Q1 0.45 0.82 1.3 M Ω REN EN Pulldown Resistance EN = 1 V Q0 0.45 0.82 1.8 M Ω CSH THRESHOLDS CSH High Fault CSH Increasing 1.6 V CSH Low Condition on LRDY CSH increasing 1 V Pin (LM3423) OV THRESHOLDS OVPCB OVP OVLO Threshold OVP Increasing 1.185 1.24 1.285 V Q1 20 23 25 µA OVP Hysteresis Source OVPHYS OVP Active (high) Current Q0 20 23 26 µA DPOL THRESHOLDS DPOLTHRES DPOL Logic Threshold DPOL Increasing 2 2.3 2.6 V H RDPOL DPOL Pullup Resistance 500 1200 k Ω FAULT TIMER Q1 1.185 1.24 1.285 V VFLTTH Fault Threshold Q0 1.185 1.24 1.29 V Q1 10 11.5 13 µA IFLT Fault Pin Source Current Q0 10 11.5 13.5 µA ERROR AMPLIFIER VREF CSH Reference Voltage With Respect to AGND 1.21 1.235 1.26 V Error Amplifier Input Bias MIN, MAX = TJ = 25°C –0.6 0 0.6 µA Current (1) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are 100% production tested. All limits at temperature extremes are specified via correlation using standard Statistical Quality Control (SQC) methods. All limits are used to calculate Average Outgoing Quality Level (AOQL). (2) Typical numbers are at 25°C and represent the most likely norm. 6 Submit Documentation Feedback Copyright © 2008–2015, Texas Instruments Incorporated Product Folder Links: LM3421 LM3421-Q1 LM3423 LM3423-Q1 |
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