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LM3500 Datasheet(PDF) 4 Page - Texas Instruments |
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LM3500 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 26 page LM3500 SNVS231G – AUGUST 2003 – REVISED MAY 2013 www.ti.com Electrical Characteristics Specifications in standard type face are for TA = 25°C and those in boldface type apply over the Operating Temperature Range of TA = −10°C to +85°C. Unless otherwise specified VIN =2.7V and specification apply to both LM3500-16 and LM3500-21. Symbol Parameter Conditions Min(1) Typ(2) Max(1) Units IQ Quiescent Current, Device Not FB > 0.54V 0.95 1.2 Switching mA Quiescent Current, Device FB = 0V 1.8 2.5 Switching Shutdown SHDN = 0V 0.1 2 µA VFB Feedback Voltage VIN = 2.7V to 7V 0.47 0.5 0.53 V ΔVFB Feedback Voltage Line VIN = 2.7V to 7V 0.1 0.4 %/V Regulation ICL Switch Current Limit VIN = 2.7V, 275 400 480 (LM3500-16) Duty Cycle = 80% VIN = 3.0V, 255 400 530 Duty Cycle = 70% mA Switch Current Limit VIN = 2.7V, 420 640 770 (LM3500-21) Duty Cycle = 70% VIN = 3.0V, 450 670 800 Duty Cycle = 63% IB FB Pin Bias Current FB = 0.5V(3) 45 200 nA VIN Input Voltage Range 2.7 7.0 V RDSON NMOS Switch RDSON VIN = 2.7V, ISW = 300mA 0.43 Ω PMOS Switch RDSON VOUT = 6V, ISW = 300mA 1.1 2.3 DLimit Duty Cycle Limit (LM3500-16) FB = 0V 80 87 % Duty Cycle Limit (LM3500-21) FB = 0V 85 94 FSW Switching Frequency 0.85 1.0 1.15 MHz ISD SHDN Pin Current(4) SHDN = 5.5V 18 30 SHDN = 2.7V 9 16 µA SHDN = GND 0.1 IL Switch Leakage Current VSW = 15V 0.01 0.5 µA (LM3500-16) Switch Leakage Current VSW = 20V 0.01 2.0 (LM3500-21) UVP Input Undervoltage Lockout ON Threshold 2.4 2.5 2.6 V OFF Threshold 2.3 2.4 2.5 OVP Output Overvoltage Protection ON Threshold 15 15.5 16 (LM3500-16) OFF Threshold 14 14.6 15 V Output Overvoltage Protection ON Threshold 20 20.5 21 (LM3500-21) OFF Threshold 19 19.5 20 IVout VOUT Bias Current VOUT = 15V, SHDN = VIN 260 400 (LM3500-16) µA VOUT Bias Current VOUT = 20V, SHDN = VIN 300 460 (LM3500-21) IVL PMOS Switch Leakage VOUT = 15V, VSW = 0V 0.01 3 Current (LM3500-16) µA PMOS Switch Leakage VOUT = 20V, VSW = 0V 0.01 3 Current (LM3500-21) (1) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are production tested, specified through statistical analysis or specified by design. 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. (3) Feedback current flows out of the pin. (4) Current flows into the pin. 4 Submit Documentation Feedback Copyright © 2003–2013, Texas Instruments Incorporated Product Folder Links: LM3500 |
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