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LMZ12008 数据表(PDF) 5 Page - Texas Instruments |
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LMZ12008 数据表(HTML) 5 Page - Texas Instruments |
5 / 35 page 5 LMZ12008 www.ti.com SNVS716H – MARCH 2011 – REVISED FEBRUARY 2016 Product Folder Links: LMZ12008 Submit Documentation Feedback Copyright © 2011–2016, Texas Instruments Incorporated (1) EN 55022:2006, +A1:2007, FCC Part 15 Subpart B, tested on Evaluation Board with EMI configuration (2) Min and Max limits are 100% production tested at 25°C. Limits over the operating temperature range are ensured through correlation using Statistical Quality Control (SQC) methods. Limits are used to calculate Average Outgoing Quality Level (AOQL). (3) Typical numbers are at 25°C and represent the most likely parametric norm. (4) Refer to BOM in Table 1. 6.5 Electrical Characteristics Limits are for TJ = 25°C unless otherwise specified. Minimum and Maximum limits are ensured 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 = 12V, VOUT = 3.3V (1) PARAMETER TEST CONDITIONS MIN(2) TYP(3) MAX(2) UNIT SYSTEM PARAMETERS ENABLE CONTROL VEN EN threshold VEN rising 1.274 V over the junction temperature (TJ) range of –40°C to +125°C 1.096 1.452 IEN-HYS EN hysteresis source current VEN > 1.274 V 13 µA SOFT-START ISS SS source current VSS = 0 V 50 µA over the junction temperature (TJ) range of –40°C to +125°C 40 60 tSS Internal soft-start interval 1.6 msec CURRENT LIMIT ICL Current limit threshold DC average 10.5 A INTERNAL SWITCHING OSCILLATOR fosc Free-running oscillator frequency 314 359 404 kHz REGULATION AND OVERVOLTAGE COMPARATOR VFB In-regulation feedback voltage VSS >+ 0.8 V IO = 8 A 0.795 V over the junction temperature (TJ) range of –40°C to +125°C 0.775 0.815 VFB-OV Feedback overvoltage protection threshold 0.86 V IFB Feedback input bias current 5 nA IQ Non-Switching Quiescent Current 3 mA ISD Shutdown Quiescent Current VEN = 0 V 32 μA Dmax Maximum Duty Factor 85% THERMAL CHARACTERISTICS TSD Thermal Shutdown Rising 165 °C TSD-HYST Thermal shutdown hysteresis Falling 15 °C PERFORMANCE PARAMETERS(4) ΔVO Output voltage ripple BW at 20 MHz 24 mVPP ΔVO/ΔVIN Line regulation VIN = 12 V to 20 V, IOUT= 8 A ±0.2% ΔVO/ΔIOUT Load regulation VIN = 12 V, IOUT= 0.001 A to 8 A 1 mV/A η Peak efficiency VIN = 12 V VOUT = 3.3 V, IOUT = 5 A 89.5% η Full load efficiency VIN = 12 V VOUT = 3.3 V, IOUT = 8 A 88.5% |
类似零件编号 - LMZ12008_16 |
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类似说明 - LMZ12008_16 |
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