Power Management
Switching Regulator
Inverting Regulators
Power Management
Switching Regulator
SEPIC Regulators
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
LT3759 - Wide Input Voltage Range Boost/SEPIC/Inverting Controller
Features
- Wide VIN Range: 1.6V to 42V
- Positive or Negative Output Voltage Programming with a Single Feedback Pin
- PGOOD Output Voltage Status Report
- Accurate 50mV SENSE Threshold Voltage
- Programmable Soft-Start
- Programmable Operating Frequency (100kHz to 1MHz) with One External Resistor
- Synchronizable to an External Clock
- Low Shutdown Current < 1μA
- INTVCC Regulator Supplied from VIN or DRIVE
- Programmable Input Undervoltage Lockout with Hysteresis
Typical Application
Description
The LT®3759 is a wide input range, current mode, DC/DC controller which is capable of regulating either positive or negative output voltages from a single feedback pin. It can be configured as a boost, SEPIC or inverting converter.
The LT3759 drives a low side external N-channel power MOSFET. An internal LDO regulator draws power from VIN or DRIVE to provide up to a 4.75V supply for the gate driver. The fixed frequency, current-mode architecture results in stable operation over a wide range of supply and output voltages. The operating frequency of LT3759 can be set over a 100kHz to 1MHz range with an external resistor, or can be synchronized to an external clock using the SYNC pin.
The LT3759 features soft-start and frequency foldback functions to limit inductor current during start-up and output short-circuit. A window comparator on the FBX pin reports via the PGOOD pin, providing output voltage status indication. The device is available in a 12-Lead exposed pad MSOP package.
Packaging
For complete and up to date package information and drawings, please refer to our packaging page
MS-12
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 |
|---|---|---|---|---|---|---|
| LT3759EMSE#PBF | MSOP | 12 | E | $3.36 | $2.35 | View |
| LT3759EMSE#TRPBF | MSOP | 12 | E | $2.41 | View | |
| LT3759HMSE#PBF | MSOP | 12 | H | $4.11 | $2.88 | View |
| LT3759HMSE#TRPBF | MSOP | 12 | H | $2.94 | View | |
| LT3759IMSE#PBF | MSOP | 12 | I | $3.62 | $2.53 | View |
| LT3759IMSE#TRPBF | MSOP | 12 | I | $2.59 | 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 |
|---|---|---|---|
| DC1725A | LT3759EMSE Boost Demo Board | VIN = 1.8V to 4.5V, V OUT = 5V @ 2A | $150.00 | |
| DC1787A | LT3759EMSE SEPIC Demo Board | VIN = 2.8V to 36V, V OUT = 12V @1A | $150.00 | |
| Buy Now | |||
Applications
- Datacom and Industrial Boost, SEPIC and Inverting Converters
- Distributed Power Supplies
- Portable Electronic Equipment
- Automotive
People Who Viewed This Product Also Viewed
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- LT8582 - Dual 3A Boost/Inverting/SEPIC DC/DC Converter with Fault Protection
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Simulate
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Related models available in LTspice IV
LT3759
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
