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LM21212-2 データシート(PDF) 3 Page - Texas Instruments |
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LM21212-2 データシート(HTML) 3 Page - Texas Instruments |
3 / 31 page LM21212-2 www.ti.com SNVS715A – MARCH 2011 – REVISED MARCH 2013 These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates. ABSOLUTE MAXIMUM RATINGS (1) (2) PVIN(3), AVIN to GND −0.3V to +6V SW(4), EN, FB, COMP, PGOOD, SS/TRK, FADJ to GND −0.3V to PVIN + 0.3V Storage Temperature −65°C to 150°C Soldering Specification for TSSOP Pb-Free Infrared or Convection (30 sec) 260°C ESD Rating, Human Body Model (5) 2kV (1) Absolute Maximum Ratings indicate limits beyond witch damage to the device may occur. Operating Ratings indicate conditions for which the device is intended to be functional, but do not ensure specific performance limits. For ensured specifications and test conditions, see the Electrical Characteristics. (2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and specifications. (3) The PVIN pin can tolerate transient voltages up to 6.5 V for a period of up to 6ns. These transients can occur during the normal operation of the device. (4) The SW pin can tolerate transient voltages up to 9.0 V for a period of up to 6ns, and -1.0V for a duration of 4ns. These transients can occur during the normal operation of the device. (5) The human body model is a 100 pF capacitor discharged through a 1.5 k Ω resistor to each pin. OPERATING RATINGS PVIN, AVIN to GND +2.95V to +5.5V Junction Temperature −40°C to +125°C θJA (1) 24°C/W (1) Thermal measurements were performed on a 2x2 inch, 4 layer, 2 oz. copper outer layer, 1 oz.copper inner layer board with twelve 8 mil. vias underneath the EP of the device and an additional sixteen 8 mil. vias under the unexposed package. ELECTRICAL CHARACTERISTICS Unless otherwise stated, the following conditions apply: VPVIN, AVIN = 5V. Limits in standard type are for TJ = 25°C only, limits in bold face 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. Symbol Parameter Conditions Min Typ Max Units SYSTEM VFB Feedback pin voltage VIN = 2.95V to 5.5V -1% 0.6 1% V ΔVOUT/ΔIOUT Load Regulation 0.02 %VOUT/ A ΔVOUT/ΔVIN Line Regulation 0.1 %VOUT/ V RDSON HS High Side Switch On Resistance ISW = 12A 7.0 9.0 m Ω RDSON LS Low Side Switch On Resistance ISW = 12A 4.3 6.0 m Ω ICLR HS Rising Switch Current Limit 15 17 19 A ICLF LS Falling Switch Current Limit 12 A VZX Zero Cross Voltage -8 3 12 mV IQ Operating Quiescent Current 1.5 3.0 mA ISD Shutdown Quiescent Current VEN = 0V 50 70 µA VUVLO AVIN Under Voltage Lockout AVIN Rising 2.45 2.70 2.95 V VUVLOHYS AVIN Under Voltage Lockout Hysteresis 140 200 280 mV VTRACKOS SS/TRACK PIN accuracy (VSS - VFB) 0 < VTRACK < 0.55V -10 6 20 mV ISS Soft-Start Pin Source Current 1.3 1.9 2.5 µA tINTSS Internal Soft-Start Ramp to Vref CSS = 0 350 500 675 µs tRESETSS Device Reset to Soft-Start Ramp 50 110 200 µs OSCILLATOR fRNG FADJ Frequency Range 300 1550 kHz Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Links: LM21212-2 |
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同様の説明 - LM21212-2 |
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