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LM3551 Folha de dados(PDF) 7 Page - Texas Instruments |
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LM3551 Folha de dados(HTML) 7 Page - Texas Instruments |
7 / 23 page + - + - + - LOGIC Drive UVP Reset OVP Set Reset Thermal SD ¦ Oscillator Duty Cycle Limit Load Current Measurement + - Thermal Shutdown Shutdown Comparator OVP Flash Timeout Bandgap Voltage Reference BG SW SS VIN GND FTO VC FB OVP FET-F FET-T SD / EN OVP COMP PWM COMP ERROR AMP GND AGND LM3551/2 VIN SD/EN LM3551 LM3552 T/F LM3551, LM3552 www.ti.com SNVS371D – AUGUST 2005 – REVISED MAY 2013 Typical Performance Characteristics (continued) Unless otherwise specified: TA = +25°C; VIN = 3.6V; L = 4.7µH, (RC = 10kΩ, CC = 4.7nF, CIN = COUT = 10µF for Lumiled LED), (RC = 27kΩ, CC = 10nF, CIN = 10µF, COUT = 4.7µF for Sharp LED), CFTO = 1µF, CSS= 0.1µF. Typical Switching Waveform Figure 14. Sharp LED in Flash Mode Ch1 = VSW, Ch3 = ILED, Ch4 = IL Block Diagram Copyright © 2005–2013, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: LM3551 LM3552 |
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