Power Management
Switching Regulator
Inverting Regulators
Power Management
Switching Regulator
SEPIC Regulators
Power Management
Switching Regulator
Flyback, Forward and Isolated Controllers
Power Management
Switching Regulator
Step-Up (Boost) Regulators
External Power Switch Boost
Space & Harsh Environment
Extended Temperature Plastic (H & MP)
Extended Temperature (H & MP) Switching Regulators
LT3758 - High Input Voltage, Boost, Flyback, SEPIC and Inverting Controller
Features
- Wide Input Voltage Range: 5.5V to 100V
- Positive or Negative Output Voltage Programming with a Single Feedback Pin
- Current Mode Control Provides Excellent Transient Response
- Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor
- Synchronizable to an External Clock
- Low Shutdown Current < 1μA
- Internal 7.2V Low Dropout Voltage Regulator
- Programmable Input Undervoltage Lockout with Hysteresis
- Programmable Soft-Start
- Small 10-Lead DFN (3mm × 3mm) and MSOPE Packages
Typical Application
Description
The LT®3758/LT3758A are wide input range, current mode, DC/DC controllers which are capable of generating either positive or negative output voltages. They can be configured as either a boost, flyback, SEPIC or inverting converter. The LT3758/LT3758A drive a low side external N-channel power MOSFET from an internal regulated 7.2V supply. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages.
The operating frequency of LT3758/LT3758A can be set with an external resistor over a 100kHz to 1MHz range, and can be synchronized to an external clock using the SYNC pin. A minimum operating supply voltage of 5.5V, and a low shutdown quiescent current of less than 1μA, make the LT3758/LT3758A ideally suited for batterypowered systems.
The LT3758/LT3758A feature soft-start and frequency foldback functions to limit inductor current during start-up and output short-circuit. The LT3758A has improved load transient performance compared to the LT3758.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
DFN-10, MS-10
Order Info
- Part numbers ending in PBF are lead free. Please contact LTC marketing for information on lead based finish parts.
- Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
- Please refer to our general ordering information or the product datasheet for more details
Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) | Price (1k)* | RoHS Data |
|---|---|---|---|---|---|---|
| LT3758AEDD#PBF | DFN | 10 | E | $3.36 | $2.35 | View |
| LT3758AEDD#TRPBF | DFN | 10 | E | $2.41 | View | |
| LT3758AEMSE#PBF | MSOP | 10 | E | $3.36 | $2.35 | View |
| LT3758AEMSE#TRPBF | MSOP | 10 | E | $2.41 | View | |
| LT3758AHMSE#PBF | MSOP | 10 | H | $4.11 | $2.88 | View |
| LT3758AHMSE#TRPBF | MSOP | 10 | H | $2.94 | View | |
| LT3758AIDD#PBF | DFN | 10 | I | $3.62 | $2.53 | View |
| LT3758AIDD#TRPBF | DFN | 10 | I | $2.59 | View | |
| LT3758AIMSE#PBF | MSOP | 10 | I | $3.62 | $2.53 | View |
| LT3758AIMSE#TRPBF | MSOP | 10 | I | $2.59 | View | |
| LT3758AMPMSE#PBF | MSOP | 10 | MP | $9.77 | $6.84 | View |
| LT3758AMPMSE#TRPBF | MSOP | 10 | MP | $6.90 | View | |
| LT3758EDD#PBF | DFN | 10 | E | $3.36 | $2.35 | View |
| LT3758EDD#TRPBF | DFN | 10 | E | $2.41 | View | |
| LT3758EMSE#PBF | MSOP | 10 | E | $3.36 | $2.35 | View |
| LT3758EMSE#TRPBF | MSOP | 10 | E | $2.41 | View | |
| LT3758HMSE#PBF | MSOP | 10 | H | $4.11 | $2.88 | View |
| LT3758HMSE#TRPBF | MSOP | 10 | H | $2.94 | View | |
| LT3758IDD#PBF | DFN | 10 | I | $3.62 | $2.53 | View |
| LT3758IDD#TRPBF | DFN | 10 | I | $2.59 | View | |
| LT3758IMSE#PBF | MSOP | 10 | I | $3.62 | $2.53 | View |
| LT3758IMSE#TRPBF | MSOP | 10 | I | $2.59 | View | |
| LT3758MPMSE | MSOP | 10 | MP | $9.77 | $6.84 | View |
| LT3758MPMSE#PBF | MSOP | 10 | MP | $9.77 | $6.84 | View |
| LT3758MPMSE#TR | MSOP | 10 | MP | $6.90 | View | |
| LT3758MPMSE#TRPBF | MSOP | 10 | MP | $6.90 | View | |
| Buy Now • Request Samples | ||||||
Demo Boards
Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.| Part Number | Description | Price | Documentation |
|---|---|---|---|
| DC1342B | LT3758EMSE Demo Board | SEPIC, Vin: 18V to 72V, Vout: 24V/1A, (3x3 QFN) | $125.00 | |
| DC1412A | LT3758MSE Demo Board | Flyback, Vin: 18V to 75V, Vout: 3.3V/3A, (3x3 QFN) | $125.00 | |
| Buy Now | |||
Applications
- Automotive
- Telecom
- Industrial
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Simulate
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Related models available in LTspice IV
LT3758
LT3758A
Technical Support
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- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
