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LM10010 データシート(PDF) 10 Page - Texas Instruments |
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LM10010 データシート(HTML) 10 Page - Texas Instruments |
10 / 17 page FB PGOOD VIN LM21215A-1 VOUT AGND COMP PVIN SW EN CIN COUT LF RC1 CC1 CC2 CC3 RFB1 RFB2 RC2 PGND AVIN CF 11-16 3 4 17 19 18 20 8,9,10 5,6,7 RF SS/ TRK CSS 2 optional HTSSOP-20 EN GND VIDA 1 10 WSON-10 3 mm x 3 mm VIDB VIDC VIDS 9 8 7 4 VDD IDAC_OUT 3 2 0 - 59.2 PA LM10010 SYNC 1 CVDD 3V to 5.5V CVDD CBYPASS VCNTL[3] VCNTL[2] VCNTL[1] VCNTL[0] TMS320C6670/ TMS320C6678 0.7V to 1.1V DVDD18 RPU1:4 LM10010 SNVS717C – JULY 2011 – REVISED MARCH 2013 www.ti.com APPLICATION INFORMATION Design Example In this example, an LM21215A-1 is used as the buck regulator to provide CVDD to the TMS320C6670 or TMS320C6678 from 0.7V to 1.1V and an output current of up to 15A. The LM10010 in conjunction with VID control from the DSP, provides control of the output voltage within this range with 6 bits of resolution. For this example, the 400 mV of voltage range translates to a 6.4 mV resolution in the control of the regulator output voltage. In this calculation, 1% resistor values are used. A schematic for this example is shown in the circuit of Figure 15. Figure 15. Typical Application Circuit Setting the VOUT Range and LSB Looking at the Typical Application Circuit in Figure 15, the following equation defines VOUT of a given regulator (valid for VOUT > VFB): (1) Here, the output voltage is a function of the resistor divider from RFB1 and RFB2. Additionally, there is a current supplied by the LM10010 that helps drive the feedback resistor RFB2, thus lowering the necessary current supplied through RFB1, and lowering VOUT. 10 Submit Documentation Feedback Copyright © 2011–2013, Texas Instruments Incorporated Product Folder Links: LM10010 |
同様の部品番号 - LM10010 |
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同様の説明 - LM10010 |
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