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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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LM21212-1 데이터시트(PDF) 4 Page - Texas Instruments |
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LM21212-1 데이터시트(HTML) 4 Page - Texas Instruments |
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4 / 33 page  LM21212-1 SNVS671E – FEBRUARY 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 SYSTEM tRESETSS DeviceReset to Soft-Start Ramp 50 110 200 µs OSCILLATOR fSYNCR SYNC Frequency Range 300 1500 kHz fDEFAULT Default (no SYNC signal) Frequency 950 1000 1050 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 comparison 55 ns tLSBLANK LS OCP Blanking Time Falling edge of SW to ICLF comparison 400 ns tZXBLANK Zero Cross Blanking Time Falling edge of SW to VZX comparison 120 ns 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 15 µs Duration 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: LM21212-1 |
유사한 부품 번호 - LM21212-1_15 |
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유사한 설명 - LM21212-1_15 |
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