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LM3670 Folha de dados(PDF) 5 Page - Texas Instruments |
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LM3670 Folha de dados(HTML) 5 Page - Texas Instruments |
5 / 24 page 1 MHz Oscillator Soft Start Ramp Generator + - Thermal Shutdown Undervoltage Lockout VREF + - 0.5V Error Amp Control Logic Driver Current Limit Comparator Ref1 PFM Current Comparator Ref2 SW Zero Crossing Comparator FB EN VIN PWM Comparator pfm_low pfm_hi GND Bandgap + - Vcomp 1.0V Frequency Compensation Adj Version Fixed Version LM3670 www.ti.com SNVS250D – NOVEMBER 2004 – REVISED JANUARY 2006 Electrical Characteristics (continued) Limits in standard typeface are for TJ = 25°C. Limits in boldface type apply over the full operating junction temperature range ( −40°C ≤ TJ ≤ +125°C). Unless otherwise noted VIN = 3.6V, VOUT = 1.8V, IO = 150mA, EN = VIN Symbol Parameter Condition Min Typ Max Units IEN Enable (EN) Input Current 0.01 1 µA FOSC Internal Oscillator Frequency PWM Mode 550 1000 1300 kHz Figure 4. Simplified Functional Diagram Copyright © 2004–2006, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: LM3670 |
Nº de peça semelhante - LM3670_14 |
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Descrição semelhante - LM3670_14 |
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