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ADP7105ARDZ-5.0-R7 bảng dữ liệu(PDF) 6 Page - Analog Devices |
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ADP7105ARDZ-5.0-R7 bảng dữ liệu(HTML) 6 Page - Analog Devices |
6 / 28 page ADP7105 Data Sheet Rev. 0 | Page 6 of 28 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Figure 3. Pin Configuration, LFCSP Package Figure 4. Pin Configuration, Narrow-Body SOIC Package Table 5. Pin Function Descriptions Pin No. Mnemonic Description 1 VOUT Regulated Output Voltage. Bypass VOUT to GND with a 1 µF or greater capacitor. 2 SENSE/ADJ Sense (SENSE). SENSE measures the actual output voltage at the load and feeds it to the error amplifier. Connect SENSE as close as possible to the load to minimize the effect of IR drop between the regulator output and the load. This function applies to fixed voltage models only. Adjust Input (ADJ). An external resistor divider sets the output voltage. This function applies to adjustable voltage models only. 3 GND Ground. 4 SS Soft Start. A capacitor connected to this pin determines the soft start time. 5 EN/UVLO Enable Input (EN). Drive EN high to turn on the regulator; drive EN low to turn off the regulator. For automatic startup, connect EN to VIN. Programmable Undervoltage Lockout (UVLO). When the programmable UVLO function is used, the upper and lower thresholds are determined by the programming resistors. 6 GND Ground. 7 PG Power Good. This open-drain output requires an external pull-up resistor to VIN or VOUT. If the part is in shutdown mode, current-limit mode, or thermal shutdown, or if VOUT falls below 90% of the nominal output voltage, PG immediately transitions low. If the power-good function is not used, the pin can be left open or connected to ground. 8 VIN Regulator Input Supply. Bypass VIN to GND with a 1 µF or greater capacitor. EPAD Exposed Pad. The exposed pad on the bottom of the package enhances thermal performance and is electrically connected to GND inside the package. It is highly recommended that the exposed pad be connected to the ground plane on the board. NOTES 1. IT IS HIGHLY RECOMMENDED THAT THE EXPOSED PAD ON THE BOTTOM OF THE PACKAGE BE CONNECTED TO THE GROUND PLANE ON THE BOARD. 3 GND 4 SS 1 VOUT 2 SENSE/ADJ 6 GND 5 EN/UVLO 8 VIN 7 PG ADP7105 TOP VIEW (Not to Scale) NOTES 1. IT IS HIGHLY RECOMMENDED THAT THE EXPOSED PAD ON THE BOTTOM OF THE PACKAGE BE CONNECTED TO THE GROUND PLANE ON THE BOARD. VOUT 1 SENSE/ADJ 2 GND 3 SS 4 VIN 8 PG 7 GND 6 EN/UVLO 5 ADP7105 TOP VIEW (Not to Scale) |
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