LT6105 Linear Technology Corporation, LT6105 Datasheet
LT6105
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LT6105 Summary of contents
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... The LT6105 can operate from an independent power supply of 2.85V to 36V and draws only 150μA. When + V prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105 is available in a 6-lead DFN and 8-lead MSOP package. Corporation. All other trademarks are the property of their respective owners. LT6105 V ...
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... For more information on lead free part marking, go to: For more information on tape and reel specifi cations, go to: 2 Specifi ed Temperature Range (Note 5) – ................ –9.5V to 44V LT6105C ................................................... 0°C to 70°C – LT6105I ................................................–40°C to 85°C ...............................36V – – LT6105H ............................................–40°C to 125°C ...
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... ELECTRICAL CHARACTERISTICS 0°C < T < 70°C (LT6105C), otherwise specifi cations are 50 OUT V SENSE SYMBOL PARAMETER + – Input Voltage Range Error Voltage Gain Error (Note Input Offset Voltage OS MS8 Package www.DataSheet4U.com Input Offset Voltage ...
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... LT6105 ELECTRICAL CHARACTERISTICS –40°C < T < 85°C (LT6105I), otherwise specifi cations are 100Ω 50), V OUT V SENSE SYMBOL PARAMETER + – Input Voltage Range Error Voltage Gain Error (Note Input Offset Voltage OS MS8 Package www.DataSheet4U.com ...
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... ELECTRICAL CHARACTERISTICS –40°C < T < 125°C (LT6105H), otherwise specifi cations are 100Ω 50), V OUT V SENSE SYMBOL PARAMETER + – Input Voltage Range Error Voltage Gain Error (Note Input Offset Voltage OS MS8 Package www.DataSheet4U.com Input Offset Voltage ...
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... Note 5: The LT6105C is guaranteed to meet specifi ed performance from 0°C to 70°C. The LT6105C is designed, characterized and expected to meet specifi ed performance from –40°C to 85°C but is not tested or QA sampled at these temperatures. The LT6105I is guaranteed to meet specifi ...
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... V 1 – 40°C A 0.5 0 25°C A –0.5 –1.0 –1.5 –2 2 INPUT VOLTAGE (V) S 6105 G14 LT6105 50 75 100 125 6105 G09 T = 85° 125° – 40° 100 120 (mV) 6105 G12 I (+IN) I (–IN ...
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... LT6105 TYPICAL PERFORMANCE CHARACTERISTICS + Input Current (V Powered Down) vs Input Voltage 1000 T = 125°C A 100 T = 85° 0 25°C www.DataSheet4U.com A 0. –40°C A 0.001 0.0001 INPUT VOLTAGE (V) S Output Saturation Voltage + vs Output Current 2 12V 1 ...
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... SENSE 11.995V – 100mV/DIV V 5V OUT 2V/DIV 0V 6105 G32 5μs/DIV + V = 12V R = 50k OUT + V = 12V A = 50V LT6105 + V = 12V V = 5mV SENSE R = 100Ω 10V 10k 100k 1M 6105 G27 + = 0V S 6105 G30 6105 G33 6105f 9 ...
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... LT6105 TYPICAL PERFORMANCE CHARACTERISTICS Step Response V = 100mV to 5mV SENSE 11.995V – 100mV/DIV V 5V OUT 2V/DIV www.DataSheet4U.com 0V 5μs/DIV + V = 12V R = 50k OUT + V = 12V A = 50V Step Response 100mV, SENSE + C = 1000pF , V = 12V L S 12V – 100mV/DIV V OUT ...
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... NC (Pin 5/Pins 3, 6, 7): Not Connected Internally set IN1 IN1 IN2 +IN (Pin 6/Pin 8): Positive Sense Input Terminal. Connecting a source to V LT6105 to monitor the current through R Figure 1. Connect + external gain-setting resistor R IN2 up to 44V, referred to V Exposed Pad (Pin 7) DFN Only: V connected to the V – V ...
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... The LT6105 extended input range current sense am- plifi er (see Figure 1) provides accurate unidirectional monitoring of current through a user-selected sense resis- tor. The LT6105 is fully specifi ed over a –0.3V to 44V input common mode range. A high PSRR V 36V) powers the current sense amplifi er. The input sense voltage is level shifted from the sensed power supply to the ground reference and amplifi ...
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... IN1 –IN tion (Figure 3) when an overload protection fuse is blown . This current OUT and V . The sense amplifi er’s maxi- IN1 the output of the LT6105 goes to the positive rail 25° – 40° 125° ...
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... Since I transconductance g then while limiting the output current. The LT6105 can output more than 1mA into 100nA. The input offset cant increase in gain error. By setting R largest expected sense voltage gives I the maximum output dynamic range is available. Output ...
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... At maximum supply and maximum output current, the total power dissipation can exceed 100mW. This will cause signifi cant heating of the LT6105 die. In order to prevent damage to the LT6105, the maximum expected dissipation in each application should be calculated. This number can be multiplied by the θ ...
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... OUT TYPICAL APPLICATIONS 16 Response Time is simply I • This The LT6105 is designed to exhibit fast response to inputs OUT OUT for the purpose of circuit protection or signal transmission. to get the desired fi lter This response time will be affected by the external circuit OUT in two ways—delay and speed. If the output current is ...
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... Figure 5. Current Measurement Waveforms. The Top Trace Is the MOSFET Gate with High On. The Middle Trace Is the Bottom of the Solenoid/ Inductor. The Bottom Trace Is the LT6105 Output, Representing Solenoid Current at 80mA /DIV. Glitches Are Useful Indicators of Solenoid Plunger Movement mechanical system monitoring without an independent sensor or limit switch ...
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... LT6105 PACKAGE DESCRIPTION 3.55 ±0.05 www.DataSheet4U.com 2.15 ±0.05 18 DCB Package 6-Lead Plastic DFN (2mm × 3mm) (Reference LTC DWG # 05-08-1715) 0.70 ±0.05 1.65 ±0.05 (2 SIDES) PACKAGE OUTLINE 0.25 ± 0.05 0.50 BSC 1.35 ±0.05 (2 SIDES) RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS 2.00 ±0.10 (2 SIDES) 3.00 ±0.10 (2 SIDES) PIN 1 BAR TOP MARK (SEE NOTE 6) 0.75 ± ...
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... REF 3.00 ± 0.102 4.90 ± 0.152 (.118 ± .004) (.193 ± .006) (NOTE 1.10 0.86 (.043) (.034) MAX REF 0.22 – 0.38 0.127 ± 0.076 (.009 – .015) (.005 ± .003) 0.65 TYP MSOP (MS8) 0204 (.0256) BSC LT6105 6105f 19 ...
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... The only requirement for negative www.DataSheet4U.com supply monitoring, in addition to the usual constraints of the absolute maximum ratings, is that the negative supply to that LT6105 be at least as negative as the supply it is monitoring. RELATED PARTS PART NUMBER DESCRIPTION LT1787/LT1787HV Precision, Bidirectional, High Side Current Sense Amplifi ...