Datasheet ADP1822 (Analog Devices) - 5
| 制造商 | Analog Devices |
| 描述 | PWM, Step-Down DC-to-DC Controller with Margining and Tracking |
| 页数 / 页 | 24 / 5 — Data Sheet. ADP1822. ABSOLUTE MAXIMUM RATINGS Table 2. Parameter. Rating. … |
| 修订版 | D |
| 文件格式/大小 | PDF / 365 Kb |
| 文件语言 | 英语 |
Data Sheet. ADP1822. ABSOLUTE MAXIMUM RATINGS Table 2. Parameter. Rating. ESD CAUTION
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文件文字版本
Data Sheet ADP1822 ABSOLUTE MAXIMUM RATINGS Table 2.
Stresses above those listed under Absolute Maximum Ratings
Parameter Rating
may cause permanent damage to the device. This is a stress VCC, SHDN, SYNC, FREQ, COMP, SS, FB, −0.3 V to +6 V rating only; functional operation of the device at these or any TRKP, TRKN, MAR, MSEL, MUP, and other conditions above those indicated in the operational MDN to GND; PVCC to PGND; BST to SW section of this specification is not implied. Exposure to absolute BST to GND −0.3 V to +30 V maximum rating conditions for extended periods may affect CSL to GND −1 V to +30 V device reliability. DH to GND (VSW − 0.3 V) to (V Absolute maximum ratings apply individually only, not in BST + 0.3 V) DL to PGND −0.3 V to combination. Unless otherwise specified, all other voltages are (V referenced to GND. PVCC + 0.3 V) SW to GND −2 V to +30 V PGND to GND ±2 V
ESD CAUTION
θJA, 2-Layer (SEMI Standard Board) 122°C/W θJA, 4-Layer (JEDEC Standard Board) 82°C/W Operating Ambient Temperature Range −40°C to +85°C Operating Junction Temperature Range −55°C to +125°C Storage Temperature Range −65°C to +150°C Maximum Soldering Lead Temperature 260°C Rev. D | Page 5 of 24 Document Outline Features Applications General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Simplified Block Diagram Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Current-Limit Scheme Output Voltage Margining Output Voltage Tracking Soft Start High-Side Driver (BST and DH) Low-Side Driver (DL) Input Voltage Range Setting the Output Voltage Switching Frequency Control Compensation Power-Good Indicator Shutdown Control Application Information Selecting the Input Capacitor Output LC Filter Selecting the MOSFETS Setting the Current Limit Feedback Voltage Divider Setting the Voltage Margin Compensating the Regulator Compensation Using the ESR Zero Compensation Using Feed-Forward Compensation Using Both the ESR and Feed-Forward Zeros Setting the Soft Start Period Synchronizing the Converter Setting the Output Voltage Tracking Application Circuits Outline Dimensions Ordering Guide
Stresses above those listed under Absolute Maximum Ratings
Parameter Rating
may cause permanent damage to the device. This is a stress VCC, SHDN, SYNC, FREQ, COMP, SS, FB, −0.3 V to +6 V rating only; functional operation of the device at these or any TRKP, TRKN, MAR, MSEL, MUP, and other conditions above those indicated in the operational MDN to GND; PVCC to PGND; BST to SW section of this specification is not implied. Exposure to absolute BST to GND −0.3 V to +30 V maximum rating conditions for extended periods may affect CSL to GND −1 V to +30 V device reliability. DH to GND (VSW − 0.3 V) to (V Absolute maximum ratings apply individually only, not in BST + 0.3 V) DL to PGND −0.3 V to combination. Unless otherwise specified, all other voltages are (V referenced to GND. PVCC + 0.3 V) SW to GND −2 V to +30 V PGND to GND ±2 V
ESD CAUTION
θJA, 2-Layer (SEMI Standard Board) 122°C/W θJA, 4-Layer (JEDEC Standard Board) 82°C/W Operating Ambient Temperature Range −40°C to +85°C Operating Junction Temperature Range −55°C to +125°C Storage Temperature Range −65°C to +150°C Maximum Soldering Lead Temperature 260°C Rev. D | Page 5 of 24 Document Outline Features Applications General Description Revision History Specifications Absolute Maximum Ratings ESD Caution Simplified Block Diagram Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Current-Limit Scheme Output Voltage Margining Output Voltage Tracking Soft Start High-Side Driver (BST and DH) Low-Side Driver (DL) Input Voltage Range Setting the Output Voltage Switching Frequency Control Compensation Power-Good Indicator Shutdown Control Application Information Selecting the Input Capacitor Output LC Filter Selecting the MOSFETS Setting the Current Limit Feedback Voltage Divider Setting the Voltage Margin Compensating the Regulator Compensation Using the ESR Zero Compensation Using Feed-Forward Compensation Using Both the ESR and Feed-Forward Zeros Setting the Soft Start Period Synchronizing the Converter Setting the Output Voltage Tracking Application Circuits Outline Dimensions Ordering Guide