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LM21212-2 Datasheet(PDF) 4 Page - Texas Instruments |
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LM21212-2 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 32 page LM21212-2 SNVS715A – MARCH 2011 – REVISED MARCH 2013 www.ti.com ELECTRICAL CHARACTERISTICS (continued) 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 fSW Switching Frequency RADJ = 22.6kΩ 1400 1550 1700 kHz RADJ = 95.3kΩ 465 500 535 tHSBLANK HS OCP Blanking Time Rising edge of SW to ICLR 55 ns comparison tLSBLANK LS OCP Blanking Time Falling edge of SW to ICLF 400 ns comparison tZXBLANK Zero Cross Blanking Time Falling edge of SW to VZX 120 ns comparison tMINON Minimum HS on-time 140 ns ΔVramp PWM Ramp p-p Voltage 0.8 V ERROR AMPLIFIER VOL Error Amplifier Open Loop Voltage Gain ICOMP = -65µA to 1mA 95 dBV/V GBW Error Amplifier Gain-Bandwidth Product 11 MHz IFB Feedback Pin Bias Current VFB = 0.6V 1 nA ICOMPSRC COMP Output Source Current 1 mA ICOMPSINK COMP Output Sink Current 65 µA POWERGOOD VOVP Over Voltage Protection Rising Threshold VFB Rising 105 112.5 120 %VFB VOVPHYS Over Voltage Protection Hysteresis VFB Falling 2 %VFB VUVP Under Voltage Protection Rising Threshold VFB Rising 82 90 97 %VFB VUVPHYS Under Voltage Protection Hysteresis VFB Falling 2.5 %VFB tPGDGL PGOOD Deglitch Low (OVP/UVP Condition Duration 15 µs to PGOOD Falling) tPGDGH PGOOD Deglitch High (minimum low pulse) 12 µs RPGOOD PGOOD Pull-down Resistance 10 20 40 Ω IPGOODLEAK PGOOD Leakage Current VPGOOD = 5V 1 nA LOGIC VIHSYNC SYNC Pin Logic High 2.0 V VILSYNC SYNC Pin Logic Low 0.8 V VIHENR EN Pin Rising Threshold VEN Rising 1.20 1.35 1.45 V VENHYS EN Pin Hysteresis 50 110 180 mV IEN EN Pin Pullup Current VEN = 0V 2 µA THERMAL SHUTDOWN TTHERMSD Thermal Shutdown 165 °C TTHERMSDHYS Thermal Shutdown Hysteresis 10 °C 4 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LM21212-2 |
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