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LMZ22003 Folha de dados(PDF) 5 Page - Texas Instruments |
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LMZ22003 Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 33 page LMZ22003 www.ti.com SNVS658I – MARCH 2011 – REVISED AUGUST 2015 Electrical Characteristics (continued) 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 = 12 V, VOUT = 3.3 V. PARAMETER TEST CONDITIONS MIN(1) TYP(2) MAX(1) UNIT INTERNAL SWITCHING OSCILLATOR Free-running oscillator fosc Sync input connected to ground. 711 812 914 kHz frequency fsync Synchronization range 650 950 kHz Synchronization logic zero VIL-sync Relative to AGND, TJ = –40°C to +125°C 0.4 V amplitude Synchronization logic one VIH-sync Relative to AGND, TJ = –40°C to +125°C 1.5 V amplitude Synchronization duty cycle Sync dc 15% 50% 85% range Dmax Maximum Duty Factor 83% REGULATION AND OVER-VOLTAGE COMPARATOR VSS >+ 0.8 V, IO = 3 A, TJ = 25°C 0.796 VFB In-regulation feedback voltage V VSS >+ 0.8 V, IO = 3 A, 0.776 0.816 TJ = –40°C to +125°C Feedback overvoltage VFB-OV 0.86 V protection threshold IFB Feedback input bias current 5 nA IQ Non-switching input current VFB = 0.86 V 2.6 mA ISD Shutdown quiescent current VEN = 0 V 70 μA THERMAL CHARACTERISTICS TSD Thermal shutdown Rising 165 °C TSD-HYST Thermal shutdown hysteresis Falling 15 °C PERFORMANCE PARAMETERS(3) Cout = 220 µF with 7 mΩ ESR + 100 µF ΔVO Output voltage ripple 9 mVPP X7R + 2 x 0.047 µF BW at 20 MHz ΔVO/ΔVIN Line regulation VIN = 12 V to 20 V, IO= 0.001 A ±0.02% ΔVO/ΔIOUT Load regulation VIN = 12 V, IO= 0.001 A to 3 A 1 mV/A η Peak efficiency VIN = 12 V, VO = 3.3 V, IO = 1 A 86% η Full load efficiency VIN = 12 V VO = 3.3 V, IO = 3 A 85% (3) Refer to BOM in Table 1. Copyright © 2011–2015, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LMZ22003 |
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