Datasheet LT6118 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | Current Sense Amplifier, Reference and Comparator with POR |
| Pages / Page | 24 / 1 — FeaTures. DescripTion. applicaTions. Typical applicaTion. Response to … |
| File Format / Size | PDF / 352 Kb |
| Document Language | English |
FeaTures. DescripTion. applicaTions. Typical applicaTion. Response to Overcurrent Event
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LT6118 Current Sense Amplifier, Reference and Comparator with POR
FeaTures DescripTion
n Current Sense Amplifier The LT®6118 is a complete high side current sense device – Fast Step Response: 500ns that incorporates a precision current sense amplifier, an – Low Offset Voltage: 200µV Maximum integrated voltage reference and a latching comparator. – Low Gain Error: 0.2% Maximum The comparator latch functionality can be enabled or n Internal 400mV Precision Reference disabled and the comparator can be configured to reset n Internal Comparator upon power-on. The input and the open-drain output of – Power-On Reset Capability the comparator are independent from the current sense – Fast Response Time: 500ns amplifier. The comparator trip point and amplifier gain are – Total Threshold Error: ±1.25% Maximum configured with external resistors. n Wide Supply Range: 2.7V to 60V The overal propagation delay of the LT6118 is typical y only n Supply Current: 450µA 1.4µs, allowing for quick reaction to overcurrent condi- n Specified for –40°C to 125°C Temperature Range tions. The 1MHz bandwidth allows the LT6118 to be used n Available in 8-Lead MSOP and 8-Lead (2mm × 3mm) for error detection in critical applications such as motor DFN Packages control. The high threshold accuracy of the comparator, combined with the ability to latch the comparator, ensures
applicaTions
the LT6118 can capture high speed events. n Overcurrent and Fault Detection The LT6118 is fully specified for operation from –40°C to n Current Shunt Measurement 125°C, making it suitable for industrial and automotive n Battery Monitoring applications. The LT6118 is available in the small 8-lead n Motor Control MSOP and 8-lead DFN packages. n Automotive Monitoring and Control L, LT, LTC, LTM, TimerBlox, Linear Technology and the Linear logo are registered trademarks n Industrial Control of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion Response to Overcurrent Event Fast Acting Fault Protection with Power-On Reset
0.1Ω IRF9640 12V TO LOAD VLOAD 6.2V* 1k 100Ω 0.1µF 10V/DIV 24.9k SENSEHI SENSELO 0V V+ OUTA VOUT 3.3V LE LT6118 ILOAD 1k 100nF 200mA/DIV 10k 6.04k 0mA 2N2700 OUTC INC VOUTC 250mA DISCONNECT 250mA DISCONNECT V– 5V/DIV 0V 1.6k 6118 TA01a 6118 TA01b 5µs/DIV *CMH25234B 6118f For more information www.linear.com/LT6118 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts
FeaTures DescripTion
n Current Sense Amplifier The LT®6118 is a complete high side current sense device – Fast Step Response: 500ns that incorporates a precision current sense amplifier, an – Low Offset Voltage: 200µV Maximum integrated voltage reference and a latching comparator. – Low Gain Error: 0.2% Maximum The comparator latch functionality can be enabled or n Internal 400mV Precision Reference disabled and the comparator can be configured to reset n Internal Comparator upon power-on. The input and the open-drain output of – Power-On Reset Capability the comparator are independent from the current sense – Fast Response Time: 500ns amplifier. The comparator trip point and amplifier gain are – Total Threshold Error: ±1.25% Maximum configured with external resistors. n Wide Supply Range: 2.7V to 60V The overal propagation delay of the LT6118 is typical y only n Supply Current: 450µA 1.4µs, allowing for quick reaction to overcurrent condi- n Specified for –40°C to 125°C Temperature Range tions. The 1MHz bandwidth allows the LT6118 to be used n Available in 8-Lead MSOP and 8-Lead (2mm × 3mm) for error detection in critical applications such as motor DFN Packages control. The high threshold accuracy of the comparator, combined with the ability to latch the comparator, ensures
applicaTions
the LT6118 can capture high speed events. n Overcurrent and Fault Detection The LT6118 is fully specified for operation from –40°C to n Current Shunt Measurement 125°C, making it suitable for industrial and automotive n Battery Monitoring applications. The LT6118 is available in the small 8-lead n Motor Control MSOP and 8-lead DFN packages. n Automotive Monitoring and Control L, LT, LTC, LTM, TimerBlox, Linear Technology and the Linear logo are registered trademarks n Industrial Control of Linear Technology Corporation. All other trademarks are the property of their respective owners.
Typical applicaTion Response to Overcurrent Event Fast Acting Fault Protection with Power-On Reset
0.1Ω IRF9640 12V TO LOAD VLOAD 6.2V* 1k 100Ω 0.1µF 10V/DIV 24.9k SENSEHI SENSELO 0V V+ OUTA VOUT 3.3V LE LT6118 ILOAD 1k 100nF 200mA/DIV 10k 6.04k 0mA 2N2700 OUTC INC VOUTC 250mA DISCONNECT 250mA DISCONNECT V– 5V/DIV 0V 1.6k 6118 TA01a 6118 TA01b 5µs/DIV *CMH25234B 6118f For more information www.linear.com/LT6118 1 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Applications Information Typical Applications Package Description Typical Application Related Parts
