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ADM7172ACPZ-1.3-R7 Datasheet(PDF) 7 Page - Analog Devices |
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ADM7172ACPZ-1.3-R7 Datasheet(HTML) 7 Page - Analog Devices |
7 / 24 page ADM7172 Data Sheet Rev. C | Page 6 of 23 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS 3 SENSE 4 SS 1 VOUT 2 VOUT 6GND 5EN 8VIN 7VIN NOTES 1. THE EXPOSED PAD ENHANCES THERMAL PERFORMANCE AND IS ELECTRICALLY CONNECTED TO GND INSIDE THE PACKAGE. CONNECT THE EXPOSED PAD TO THE GROUND PLANE ON THE BOARD TO ENSURE PROPER OPERATION. ADM7172 TOP VIEW (Not to Scale) Figure 3. Pin Configuration Table 6. Pin Function Descriptions Pin No. Mnemonic Description 1 VOUT Regulated Output Voltage. Bypass this pin to GND with a 4.7 μF or greater capacitor. 2 VOUT Regulated Output Voltage. This pin is internally connected to Pin 1. 3 SENSE Sense Input. Connect this pin as close as possible to the load for best load regulation. Use an external resistor divider to set the output voltage higher than the fixed output voltage. 4 SS Soft Start. A 1 nF external capacitor connected to SS results in a 1.0 ms start-up time. 5 EN Regulator Enable. Drive EN high to turn on the regulator; drive EN low to turn off the regulator. For automatic startup, connect EN to VIN (Pin 7 or Pin 8). 6 GND Ground. 7 VIN Regulator Input Supply. Bypass this pin to GND with a 4.7 μF or greater capacitor. 8 VIN Regulator Input Supply. This pin is internally connected to Pin 7. 9 EP Exposed Pad. The exposed pad is on the bottom of the package. The exposed pad enhances thermal performance and is electrically connected to GND inside the package. Connect the exposed pad to the ground plane on the board to ensure proper operation. |
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