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ADP2302ARDZ-2.5 Datasheet(PDF) 5 Page - Analog Devices |
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ADP2302ARDZ-2.5 Datasheet(HTML) 5 Page - Analog Devices |
5 / 28 page Data Sheet ADP2302/ADP2303 Rev. A | Page 5 of 28 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS BST 1 VIN 2 EN 3 PGOOD 4 SW 8 GND 7 NC 6 FB 5 NOTES 1. NC = NO CONNECT. 2. THE EXPOSED PAD SHOULD BE SOLDERED TO AN EXTERNAL GROUND PLANE UNDERNEATH THE IC FOR THERMAL DISSIPATION. ADP2302 ADP2303 TOP VIEW (Not to Scale) Figure 3. Pin Configuration (Top View) Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 BST Bootstrap Supply for the High-Side MOSFET Driver. A 0.1 μF capacitor is connected between SW and BST to provide a floating driver voltage for the power switch. 2 VIN Power Input. Connect to the input power source with a ceramic bypass capacitor to GND directly from this pin. 3 EN Output Enable. Pull this pin high to enable the output. Pull this pin low to disable the output. This pin can also be used as a programmable UVLO input. This pin has an internal 1.2 μA pull-down current to GND. 4 PGOOD Power-Good Open-Drain Output. 5 FB Feedback Voltage Sense Input. For the adjustable version, connect this pin to a resistive divider from VOUT. For the fixed output version, connect this pin to VOUT directly. 6 NC Used for internal testing. Connect to GND or leave this pin floating to ensure proper operation. 7 GND Ground. Connect this pin to the ground plane. 8 SW Switch Node Output. Connect an inductor to VOUT and a catch diode to GND from this pin. 9 (EPAD) Exposed Pad The exposed pad should be soldered to an external ground plane underneath the IC for thermal dissipation. |
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