lt3092 Linear Technology Corporation, lt3092 Datasheet
lt3092
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lt3092 Summary of contents
Page 1
... Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting. The LT3092 is offered in the 8-lead TSOT-23, 3-lead SOT-223 and 8-lead 3mm × 3mm DFN packages. LT, LTC and LTM are registered trademarks of Linear Technology Corporation. ...
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... LT3092ITS8#PBF LT3092ITS8#TRPBF LEAD BASED FINISH TAPE AND REEL LT3092EDD LT3092EDD#TR LT3092IDD LT3092IDD#TR LT3092EST LT3092EST#TR LT3092IST LT3092IST#TR LT3092MPST LT3092MPST#TR LT3092ETS8 LT3092ETS8#TR LT3092ITS8 LT3092ITS8#TR Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. ...
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... Pulse Note 4: For the LT3092, dropout is specifi the minimum input-to- output voltage differential required supplying a given output current. Note 5: Adding a small capacitor across the reference current resistor lowers output noise. Adding this capacitor bypasses the resistor shot noise ...
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... NC (Pins 3, 5, 6/NA/Pins 1, 6): No Connection. These pins have no connection to internal circuitry and may be tied to IN, OUT, GND or fl oated. OUT (Pins 1, 2/Pin 2/Pins 2, 3, 4): Output. This is the power output of the device. The LT3092 requires a 0.5mA minimum load current or the output will not regulate. BLOCK DIAGRAM 4 SET (Pin 4/Pin 1/Pin 5): Set. This pin is the error ampli- fi ...
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... The LT3092 is easy to use and has all the protection fea- tures expected in high performance products. Included are reverse-voltage protection, reverse-current protec- tion, short-circuit protection and thermal shutdown with hysteresis ...
Page 6
... Linear Technology strongly recommends that stability be tested in situ for any LT3092 application. In LT3092 applications with long wires or PCB traces, the inductive reactance may cause instability. In some cases, adding series resistance to the input and output lines (as shown in Figure 2) may suffi ciently dampen these possible high-Q lines and provide stability. The user must evaluate the required resistor values against the design’ ...
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... In some extreme cases, capacitors or series RC networks may be required on both the LT3092’s input and output to stabilize the circuit. Figure 4 depicts a general application using input and output capacitor networks, rather than an input-to-output capacitor. As the input of the current ...
Page 8
... ESR capacitor forming a high-Q resonant tank circuit with the inductance of the input wires. Adding series resistance with the input of the LT3092, or with the input capacitor, often solves this. Resistor values of 0.1Ω to 1Ω are often suffi cient to dampen this resonance. ...
Page 9
... The worst-case offset, only ±2mV between the SET pin and the OUT pin, allows the use of very small ballast resistors. As shown in Figure 9, each LT3092 has a small 40mΩ ballast resistor, which at full output current gives better than 80% equalized sharing of the current. The external resistance of 40mΩ ...
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... LT3092 APPLICATIONS INFORMATION LT3092 10μA 20k Figure 8. Connect Two LT3092s for Higher Current LT3092 10μA 1V 50k 3092 F09 as the application dictates. Consider all additional, adjacent heat generating sources in proximity on the PCB. Surface mount packages provide the necessary heat sinking by using the heat spreading capabilities of the PC board, copper traces and planes. Surface mount heat sinks, plated through-holes and solder fi ...
Page 11
... IN, is less than 1mA (typically under 100μA), protecting the LT3092 and sensitive loads. Clamping diodes and 1k limiting resistors protect the LT3092’s SET pin relative to the OUT pin voltage. These protection components typically only carry current under transient overload conditions. These devices are sized to handle ± ...
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... R2 R1 200mV 20k 2Ω – I OUT 100mA 12 Paralleling Current Sources with Ballast Resistor IN LT3092 10μA + – OUT SET R3 3092 TA02 Decreasing Power Dissipation in LT3092 100mA Current Source LT3092 D1 35V ≥ OUT 200 OUT 35V 3092 TA04 IN IN LT3092 10μ ...
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... Active Load + V IN LT3092 10μA + – SET OUT 10k 100Ω OUTPUT 1mA INPUT 3092 TA09 LT3092 Remote Temperature Sensor LT3092 10μA + – SET OUT I OUT LOAD 3092 TA07 Pulsed Current Source, Load to Ground LT3092 10μA + – SET OUT 20k 1Ω ...
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... I OUT I SET Pulsed Current Source, Load LOAD I OUT IN LT3092 10μA + – SET OUT OFF ON 3092 TA12 Voltage Clamp LT3092 IN 10μA + – 4.99Ω OUT 10k SET 10k 100k 10V 3092 TA14 2N3904 V – 11V IN OUT 10k V OUT 3092p ...
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... ALL DIMENSIONS ARE IN MILLIMETERS 4. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE 5. EXPOSED PAD SHALL BE SOLDER PLATED 6. SHADED AREA IS ONLY A REFERENCE FOR PIN 1 LOCATION ON TOP AND BOTTOM OF PACKAGE LT3092 R = 0.115 0.38 ± 0.10 TYP 5 8 ...
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... LT3092 PACKAGE DESCRIPTION (6.30 – 6.71) (2.90 – 3.15) .264 – .287 (6.70 – 7.30) .130 – .146 (3.30 – 3.71) .0905 (2.30) BSC .071 (1.80) MAX 16 ST Package 3-Lead Plastic SOT-223 (Reference LTC DWG # 05-08-1630) .248 – .264 .114 – .124 .059 MAX .033 – .041 (0.84 – 1.04) 10° – 16° ...
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... TS8 Package 8-Lead Plastic TSOT-23 (Reference LTC DWG # 05-08-1637) 0.65 REF 1.22 REF 1.50 – 1.75 2.80 BSC 1.4 MIN (NOTE 4) 0.65 BSC 0.80 – 0.90 1.00 MAX 0.09 – 0.20 (NOTE 3) LT3092 2.90 BSC (NOTE 4) PIN ONE ID 0.22 – 0.36 8 PLCS (NOTE 3) 0.01 – 0.10 1.95 BSC TS8 TSOT-23 0802 3092p 17 ...
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... ThinSOT is a trademark of Linear Technology Corporation. Linear Technology Corporation 18 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● Current Limiter for Remote Power LT3092 10μA + – SET OUT 4.99Ω LDO 3092 TA15 COMMENTS 300mV Dropout Voltage, Low Noise: 20μV 300mV Dropout Voltage, Low Noise: 20μ ...