Linear Technology, LT1074CT7#PBF Step-Down Switching Regulator 5A Adjustable, 2.5 50 V 7-Pin, TO-220
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LT1074CT7#PBF Product Details
The LT1074CT7#PBF is a 5A (LT1076 is rated at 2A) monolithic bipolar switching regulator which requires only a few external parts for normal operation. The power switch, all oscillator and control circuitry, and all current limit components,are included on the chip. The topology is a classic positive “buck” configuration but several design innovations allow this device to be used as a positive-to-negative converter, a negative boost converter, and as a flyback converter. The switch output is specified to swing 40V below ground, allowing the LT1074CT7#PBF to drive a tapped-inductor in the buck mode with output currents up to 10A.
The LT1074CT7#PBF uses a true analog multiplier in the feedback loop. This makes the device respond nearly instantaneously to input voltage fluctuations and makes loop gain independent of input voltage. As a result, dynamic behavior of the regulator is significantly improved over previous designs.
On-chip pulse by pulse current limiting makes the LT1074CT7#PBF nearly bust-proof for output overloads or shorts. The input voltage range as a buck converter is 8V to 60V, but a self-boot feature allows input voltages as low as 5V in the inverting and boost configurations.
The LT1074CT7#PBF is available in lowcost TO-220 or DD packages with frequency pre-set at 100kHz and current limit at 6.5A (LT1076 =2.6A). A 7-pin TO-220 package is also available which allows current limit to be adjusted down to zero. In addition, full micropower shutdown can be programmed. See Application Note 44 for design details.
A fixed 5V output, 2A version is also available. See LT1076-5.
- 5A Onboard Switch (LT1074)
- Operates Up to 60V Input
- 100kHz Switching Frequency
- Greatly Improved Dynamic Behavior
- Available in Low Cost 5 and 7-Lead Packages
- Only 8.5mA Quiescent Current
- Programmable Current Limit
- Micropower Shutdown Mode
- Buck Converter with Output Voltage Range of 2.5V to 50V
- Tapped-Inductor Buck Converter with 10A Output at 5V
- Positive-to-Negative Converter
- Negative Boost Converter
- Multiple Output Buck Converter
- Step-Up, Step-Down, Step-Up/Step-Down
- Output Configuration
- Positive or Negative
- Buck, Boost, Flyback
- Output Type
- Number of Outputs
- Voltage Input (Min)
- Voltage Input (Max)
- Voltage Output (Min/Fixed)
- Voltage Output (Max)
- Current Output
- 5.5A (Switch)
- Frequency Switching
- Synchronous Rectifier
- Operating Temperature
- 0??C ~ 70??C (TA)
- Mounting Type
- Through Hole
- Package / Case
- TO-220-7 (Formed Leads)
- Supplier Device Package
LT1074 Technical Documentation/Data sheet
LT1074CT7#PBF Related Products
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Estimated Delivery Time: Jul 11 - Jul 16 days (choose Expedited at checkout).
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1.We provide 90 days warranty.
2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.
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- Q: What is the process for returns or replacement of LT1074CT7#PBF?
All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment.
If there is something wrong with the LT1074CT7#PBF we delivered, we will accept the replacement or return of the LT1074CT7#PBF only when all of the below conditions are fulfilled:
(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
(2)We are informed of the defect described above within 90 days after the delivery of LT1074CT7#PBF.
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(1)Inform us within 90 days
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