Datasheet AD8240 (Analog Devices) - 2
| Manufacturer | Analog Devices |
| Description | LED Driver/Monitor |
| Pages / Page | 12 / 2 — AD8240. TABLE OF CONTENTS. REVISION HISTORY. 4/04—Revision 0: Initial … |
| File Format / Size | PDF / 223 Kb |
| Document Language | English |
AD8240. TABLE OF CONTENTS. REVISION HISTORY. 4/04—Revision 0: Initial Version
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AD8240 TABLE OF CONTENTS
Specifications... 3 Using/Evaluating the AD8240 LED Driver Monitor ..6 Absolute Maximum Ratings.. 4 Setup..6 Product Description... 5 Controlling the LED lamp..7 Linear Regulator (Block A) ... 5 Using/Evaluating the VSense Output ...7 High-Side Current-Sense Amplifier with Open LED Advantages of Driving LED Lamps with Constant Voltage ..8 Detection (Block B).. 5 Background ..8 Comparator with Latch-off OverCurrent Protection Monitoring the LEDs ..8 (Block C).. 5 Driving Automotive LEDs..8 Intelligent Driver (Block D) .. 5 Outline Dimensions ... 10 Ordering Guide .. 11
REVISION HISTORY 4/04—Revision 0: Initial Version
Rev. 0 | Page 2 of 12 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PRODUCT DESCRIPTION LINEAR REGULATOR (BLOCK A) HIGH-SIDE CURRENT-SENSE AMPLIFIER WITH OPEN LED DETECTION (B COMPARATOR WITH LATCH-OFF OVERCURRENT PROTECTION (BLOCK C) INTELLIGENT DRIVER (BLOCK D) USING/EVALUATING THE AD8240 LED DRIVER MONITOR SETUP Shunt Resistor Selection Circuit Configuration CONTROLLING THE LED LAMP USING/EVALUATING THE VSENSE OUTPUT Using/Evaluating the Short-Circuit Protection Feature ADVANTAGES OF DRIVING LED LAMPS WITH CONSTANT VOLTAGE BACKGROUND MONITORING THE LEDS DRIVING AUTOMOTIVE LEDS Constant Current Constant Voltage OUTLINE DIMENSIONS ORDERING GUIDE
AD8240 TABLE OF CONTENTS
Specifications... 3 Using/Evaluating the AD8240 LED Driver Monitor ..6 Absolute Maximum Ratings.. 4 Setup..6 Product Description... 5 Controlling the LED lamp..7 Linear Regulator (Block A) ... 5 Using/Evaluating the VSense Output ...7 High-Side Current-Sense Amplifier with Open LED Advantages of Driving LED Lamps with Constant Voltage ..8 Detection (Block B).. 5 Background ..8 Comparator with Latch-off OverCurrent Protection Monitoring the LEDs ..8 (Block C).. 5 Driving Automotive LEDs..8 Intelligent Driver (Block D) .. 5 Outline Dimensions ... 10 Ordering Guide .. 11
REVISION HISTORY 4/04—Revision 0: Initial Version
Rev. 0 | Page 2 of 12 Document Outline FEATURES GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PRODUCT DESCRIPTION LINEAR REGULATOR (BLOCK A) HIGH-SIDE CURRENT-SENSE AMPLIFIER WITH OPEN LED DETECTION (B COMPARATOR WITH LATCH-OFF OVERCURRENT PROTECTION (BLOCK C) INTELLIGENT DRIVER (BLOCK D) USING/EVALUATING THE AD8240 LED DRIVER MONITOR SETUP Shunt Resistor Selection Circuit Configuration CONTROLLING THE LED LAMP USING/EVALUATING THE VSENSE OUTPUT Using/Evaluating the Short-Circuit Protection Feature ADVANTAGES OF DRIVING LED LAMPS WITH CONSTANT VOLTAGE BACKGROUND MONITORING THE LEDS DRIVING AUTOMOTIVE LEDS Constant Current Constant Voltage OUTLINE DIMENSIONS ORDERING GUIDE
