Datenblatt-Suchmaschine für elektronische Bauteile |
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AD8450-EVALZ Datenblatt(PDF) 3 Page - Analog Devices |
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AD8450-EVALZ Datenblatt(HTML) 3 Page - Analog Devices |
3 / 42 page AD8450 Data Sheet Rev. B | Page 2 of 41 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 8 Thermal Resistance ...................................................................... 8 ESD Caution.................................................................................. 8 Pin Configuration and Function Descriptions............................. 9 Typical Performance Characteristics ........................................... 11 PGIA Characteristics ................................................................. 11 PGDA Characteristics................................................................ 13 CC and CV Loop Filter Amplifiers, Uncommitted Op Amp, and VSET Buffer......................................................................... 15 VINT Buffer ................................................................................ 17 Current Sharing Amplifier ........................................................ 18 Comparators................................................................................ 19 Reference Characteristics .......................................................... 20 Theory of Operation ...................................................................... 21 Introduction ................................................................................ 21 Programmable Gain Instrumentation Amplifier (PGIA)..... 23 Programmable Gain Difference Amplifier (PGDA).............. 24 CC and CV Loop Filter Amplifiers.......................................... 24 Compensation............................................................................. 26 VINT Buffer ................................................................................ 26 MODE Pin, Charge and Discharge Control ........................... 26 Overcurrent and Overvoltage Comparators........................... 27 Current Sharing Bus and IMAX Output................................. 28 Applications Information .............................................................. 29 Functional Description.............................................................. 29 Power Supply Connections ....................................................... 29 Power Supply Sequencing ......................................................... 29 Power-On Sequence................................................................... 29 Power-Off Sequence................................................................... 30 PGIA Connections ..................................................................... 30 PGDA Connections ................................................................... 31 Battery Current and Voltage Control Inputs (ISET and VSET) ....................................................................................................... 31 Loop Filter Amplifiers ............................................................... 32 Connecting to a PWM Controller (VCTRL Pin) ...................... 32 Overvoltage and Overcurrent Comparators........................... 32 Step by Step Design Example.................................................... 32 Additional Information ............................................................. 33 Evaluation Board ............................................................................ 34 Introduction................................................................................ 34 Features and Tests....................................................................... 34 Testing the AD8450-EVALZ..................................................... 34 Using the AD8450...................................................................... 36 Schematic and Artwork............................................................. 37 Outline Dimensions....................................................................... 41 Ordering Guide .......................................................................... 41 REVISION HISTORY 8/15—Rev. A to Rev. B Changes to Table 2............................................................................ 8 Added Power Supply Sequencing Section and Power-On Sequence Section ............................................................................ 29 Added Power-Off Sequence .......................................................... 30 Added Additional Information Section....................................... 33 Changes to Step 4: Determine the Control Voltage for the CC Loop, the Shunt Resistor, and the PGIA Gain Section .............. 33 7/14—Rev. 0 to Rev. A Changes to General Description .....................................................1 Changes to Pin 39 and Pin 80 Descriptions................................ 10 Changes to Introduction Section and Figure 50 ........................ 22 Changes to Figure 52...................................................................... 24 Changes to Figure 55...................................................................... 26 Changes to Current Sharing Bus and IMAX Output Section .. 27 Changes to Figure 58...................................................................... 28 Changes to Figure 59...................................................................... 30 Changes to Evaluation Board Section.......................................... 33 1/14—Revision 0: Initial Version |
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Ähnliche Beschreibung - AD8450-EVALZ |
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