Datasheet ADP5304 (Analog Devices) - 6
| 制造商 | Analog Devices |
| 描述 | Ultralow Power Step-Down Regulator with Input Voltage Monitor and Regulation |
| 页数 / 页 | 17 / 6 — ADP5304. Data Sheet. PIN CONFIGURATION AND FUNCTION DESCRIPTIONS. EN 1. … |
| 文件格式/大小 | PDF / 562 Kb |
| 文件语言 | 英语 |
ADP5304. Data Sheet. PIN CONFIGURATION AND FUNCTION DESCRIPTIONS. EN 1. 10 PVIN. NC 2. 9 SW. MODE 3. 8 PGND. TOP VIEW. (Not to Scale). VID 4
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文件文字版本
ADP5304 Data Sheet PIN CONFIGURATION AND FUNCTION DESCRIPTIONS EN 1 10 PVIN NC 2 9 SW ADP5304 MODE 3 8 PGND TOP VIEW (Not to Scale) VID 4 7 AGND FB 5 6 VINOK NOTES 1. NC = NO CONNECT. 2. EXPOSED PAD. SOLDER THE EXPOSED PAD TO A LARGE
03 0
EXTERNAL COPPER GROUND PLANE UNDERNEATH THE
3-
IC FOR THERMAL DISSIPATION.
49 13 Figure 3. Pin Configuration
Table 4. Pin Function Descriptions Pin No. Mnemonic Description
1 EN Enable Input for the Regulator. A logic low on this pin disables the regulator. 2 NC No Connect. Connect this pin to ground. 3 MODE Operating Mode Pin. Connect this pin to ground; the regulator operates in hysteresis mode. 4 VID Voltage Configuration Pin. Connect one resistor from this pin to ground to configure the output voltage of the regulator. 5 FB Feedback Sensing Input for the Regulator. 6 VINOK Input Power-Good Signal. This open-drain output is the power-good signal for the input voltage. 7 AGND Analog Ground. 8 PGND Power Ground. 9 SW Switching Node Output for the Regulator. 10 PVIN Power Input for the Regulator. EPAD Exposed Pad. Solder the exposed pad to a large external copper ground plane underneath the IC for thermal dissipation. Rev. 0 | Page 6 of 17 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODE ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE VINOK FUNCTION CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE
03 0
EXTERNAL COPPER GROUND PLANE UNDERNEATH THE
3-
IC FOR THERMAL DISSIPATION.
49 13 Figure 3. Pin Configuration
Table 4. Pin Function Descriptions Pin No. Mnemonic Description
1 EN Enable Input for the Regulator. A logic low on this pin disables the regulator. 2 NC No Connect. Connect this pin to ground. 3 MODE Operating Mode Pin. Connect this pin to ground; the regulator operates in hysteresis mode. 4 VID Voltage Configuration Pin. Connect one resistor from this pin to ground to configure the output voltage of the regulator. 5 FB Feedback Sensing Input for the Regulator. 6 VINOK Input Power-Good Signal. This open-drain output is the power-good signal for the input voltage. 7 AGND Analog Ground. 8 PGND Power Ground. 9 SW Switching Node Output for the Regulator. 10 PVIN Power Input for the Regulator. EPAD Exposed Pad. Solder the exposed pad to a large external copper ground plane underneath the IC for thermal dissipation. Rev. 0 | Page 6 of 17 Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUIT GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY DETAILED FUNCTIONAL BLOCK DIAGRAM SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION BUCK REGULATOR OPERATIONAL MODE ADJUSTABLE AND FIXED OUTPUT VOLTAGES UNDERVOLTAGE LOCKOUT (UVLO) ENABLE/DISABLE VINOK FUNCTION CURRENT LIMIT SHORT-CIRCUIT PROTECTION SOFT START STARTUP WITH PRECHARGED OUTPUT 100% DUTY OPERATION ACTIVE DISCHARGE THERMAL SHUTDOWN APPLICATIONS INFORMATION EXTERNAL COMPONENT SELECTION SELECTING THE INDUCTOR OUTPUT CAPACITOR INPUT CAPACITOR LAYOUT RECOMMENDATIONS TYPICAL APPLICATION CIRCUITS FACTORY PROGRAMMABLE OPTIONS OUTLINE DIMENSIONS ORDERING GUIDE