データシートサーチシステム |
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LM21215A データシート(PDF) 5 Page - Texas Instruments |
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LM21215A データシート(HTML) 5 Page - Texas Instruments |
5 / 32 page LM21215A www.ti.com SNOSB87B – MARCH 2011 – REVISED MARCH 2013 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 SYSTEM 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 fSYNCR SYNC Frequency Range 300 1500 kHz fDEFAULT Default (no SYNC signal) Frequency 475 500 525 kHz tSY_SW Time from SYNC falling to VSW Rising 200 ns tSY_MIN Minimum SYNC pin pulse width, high or low 100 ns 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 Copyright © 2011–2013, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM21215A |
同様の部品番号 - LM21215A_15 |
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同様の説明 - LM21215A_15 |
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