LT1910 Linear Technology, LT1910 Datasheet
LT1910
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LT1910 Summary of contents
Page 1
... The device will not sustain damage from supply transients of –15V to 60V. The LT1910 is available in the SO-8 package. , LTC and LT are registered trademarks of Linear Technology Corporation. 24V 8 ...
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... OFF(CL) Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: The LT1910E is guaranteed to meet performance specifications from Specifications over the – operating temperature range are assured by design, characterization and correlation with statistical process controls ...
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... TEMPERATURE ( C) 1910 G05 Drain Sense Threshold Voltage vs Temperature 24V –50 – 100 TEMPERATURE ( C) 1910 G08 LT1910 Input Voltage vs Temperature 2.0 1.8 V INH 1.6 1.4 V INL 1.2 1.0 0.8 –50 – 100 TEMPERATURE ( C) 1910 G03 Timer Clamp Voltage vs Temperature 3 ...
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... LT1910 W U TYPICAL PERFOR A CE CHARACTERISTICS MOSFET Gate Drive Current + vs V – V GATE 100 12V V 24V 1 0 – V (V) GATE 1910 G10 Turn-On Time vs Temperature 400 + V = 24V V = 32V GATE 350 C = 1nF GATE 300 ...
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... SENSE pin is tied to supply (Pin 8): In addition to providing the operating current for the LT1910, the V connection for the current sense comparator. The V must be connected to the positive side of the drain sense resistor for proper current sensing operation. LT1910 ...
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... U OPERATIO (Refer to the Block Diagram) The LT1910 GATE pin has two states, OFF and ON. In the OFF state it is held LOW, while in the ON state it is pumped to 12V above the supply by a self-contained 750kHz charge pump. The OFF state is activated when either the IN pin is below 0 ...
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... APPLICATIO S I FOR ATIO Input/Supply Sequencing There are no input/supply sequencing requirements for the LT1910. The IN pin may be taken up to 15V with the supply at 0V. When the supply is turned on with the IN pin set HIGH, the MOSFET turn-on will be inhibited until the timing capacitor charges up to 2.9V (i.e., for one restart cycle) ...
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... A clamp diode connected directly across each inductive load normally serves this purpose diode is not employed, the LT1910 clamps the MOSFET gate 0.7V below ground. This causes the MOSFET to resume conduction during the current decay with ( ...
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... Printed Circuit Board Shunts The sheet resistance of 1oz copper clad is approximately –4 5 • 10 0.39%/ C. Since the LT1910 drain sense threshold has a similar temperature coefficient (0.33%/ C), this offers the possibility of nearly zero TC current sensing using the “free” drain sense resistor made out of PC trace material. ...
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... V pins. However, when this voltage is exceeded, even for a few microseconds, the result can be catastrophic. For this reason it is imperative that the LT1910 is not exposed to supply transients above 60V. A transient suppressor, such as Diodes Inc.’s SMAJ48A, should be added between the ...
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... R , sense pin. This approach allows the use of a small sense S resistor which could be made from PC trace material. The LT1910 restart timer functions the same as in the high side switch application Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) ...
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... SMBus Dual Monolithic High Side Switch TM LTC4412 Low Loss PowerPath Controller PowerPath and ThinSOT are trademarks of Linear Technology Corporation. Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 5V R1 LT1910 5. FAULT OUTPUT FAULT INPUT IN SENSE ...