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LM3151 Datasheet(PDF) 5 Page - Texas Instruments |
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LM3151 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 27 page  LM3151, LM3152, LM3153 www.ti.com SNVS562G – SEPTEMBER 2008 – REVISED MARCH 2011 ELECTRICAL CHARACTERISTICS (continued) Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the junction temperature (TJ) range of -40°C to +125°C. 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 conditions apply: VIN = 18V. Symbol Parameter Conditions Min Typ Max Units Soft-Start ISS SS Pin Source Current VSS = 0V 5.9 7.7 9.5 mA ISS-DIS SS Pin Discharge Current 200 µA Current Limit VCL Current Limit Voltage Threshold 175 200 225 mV ON/OFF Timer tON-MIN ON Timer Minimum Pulse Width 200 ns tOFF OFF Timer Minimum Pulse Width 370 525 ns Enable Input VEN EN Pin Input Threshold Trip Point VEN Rising 1.14 1.20 1.26 V VEN-HYS EN Pin threshold Hysteresis VEN Falling 120 mV Boost Diode IBST = 2 mA 0.7 V Vf Forward Voltage IBST = 30 mA 1 V Thermal Characteristics Thermal Shutdown Rising 165 °C TSD Thermal Shutdown Hysteresis Falling 15 °C 4 Layer JEDEC Printed Circuit 40 Board, 9 Vias, No Air Flow θJA Junction to Ambient °C/W 2 Layer JEDEC Printed Circuit 140 Board. No Air Flow θJC Junction to Case No Air Flow 4 °C/W ELECTRICAL CHARACTERISTICS 3.3V OUTPUT OPTION Symbol Parameter Conditions Min Typ Max Units VOUT Output Voltage 3.234 3.3 3.366 V VOUT-OV Output Voltage Over-Voltage Threshold 3.83 4.00 4.17 V LM3151-3.3 42 VIN-MAX Maximum Input Voltage (1) LM3152-3.3 33 V LM3153-3.3 18 LM3151-3.3 6 VIN-MIN Minimum Input Voltage (1) LM3152-3.3 6 V LM3153-3.3 8 LM3151-3.3, RON = 115 kΩ 250 fS Switching Frequency LM3152-3.3, RON = 51 kΩ 500 kHz LM3153-3.3, RON = 32 kΩ 750 LM3151-3.3, RON = 115 kΩ 730 tON On-Time LM3152-3.3, RON = 51 kΩ 400 ns LM3153-3.3, RON = 32 kΩ 330 RFB FB Resistance to Ground 566 k Ω (1) The input voltage range is dependent on minimum on-time, off-time, and therefore frequency, and is also affected by optimized MOSFET selection. Copyright © 2008–2011, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM3151 LM3152 LM3153 |
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