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LM2608ATLX-1.3 bảng dữ liệu(PDF) 3 Page - National Semiconductor (TI) |
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LM2608ATLX-1.3 bảng dữ liệu(HTML) 3 Page - National Semiconductor (TI) |
3 / 18 page Pin Description Pin Number (*) Pin Name Function A1 FB Feedback Analog Input. Connect to the output at the output filter capacitor (Figure 1) B1 VSEL Output Voltage Selection Input. Set this digital input to: VDD for 1.8V output voltage (1.5V for LM2608ATL-1.3) SGND for 1.5V output voltage (1.3V for LM2608ATL-1.3) C1 VREF External Reference Input. Drive this analog input with a 1.35V reference to set the output voltage. The LM2608 uses an internal reference while in LDO mode. (see Note 5 in the Electrical Characteristics table for further information.) D1 SYNC/MODE Synchronization Input. Use this digital input for frequency synchronization or mode control. Set: SYNC/MODE = high for low-noise 600kHz PWM mode SYNC/MODE = low for low-current LDO mode SYNC/MODE = 500kHz - 1MHz external clock for synchronization to an external clock in PWM mode. See Synchronization and Operating Modes in the Device Information section. D2 EN Enable Input. Set this Schmitt trigger digital input high for normal operation. D3 PGND Power Ground C3 SW Switching Node connection to the internal PFET switch and NFET synchronous rectifier. Connect to an inductor with a saturation current rating that exceeds the max. Switch Peak Current Limit specification of the LM2608 (Figure 1) B3 PVIN Power Supply Input to the internal PFET switch. Connect to the input filter capacitor (Figure 1). A3 VDD Analog Supply Input. If board layout is not optimum, an optional 0.1µF ceramic capacitor is suggested (Figure 1) A2 SGND Analog and Control Ground (*) Note that the pin numbering scheme for the Micro SMD package was revised in April,2002 to conform to JEDEC standard. Only the pin numbers were revised. No changes to the physical location of the inputs/outputs were made. For reference purpose, the obsolete numbering had FB as pin 1, VSEL as pin 2, VREF as pin 3, SYNC as pin 4, EN as pin 5, PGND as pin 6, SW as pin 7, PVIN as pin 8, VDD as pin 9 and SGND as pin 10. www.national.com 3 |
Số phần tương tự - LM2608ATLX-1.3 |
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Mô tả tương tự - LM2608ATLX-1.3 |
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