LTC4440 - High Speed, High Voltage High Side Gate Driver
Features
- Wide Operating VIN Range: Up to 80V
- Rugged Architecture Tolerant of 100V VIN Transients
- Powerful 1.5Ω Driver Pull-Down
- Powerful 2.4A Peak Current Driver Pull-Up
- 7ns Fall Time Driving 1000pF Load
- 10ns Rise Time Driving 1000pF Load
- Drives Standard Threshold MOSFETs
- TTL/CMOS Compatible Inputs with Hysteresis
- Input Thresholds are Independent of Supply
- Undervoltage Lockout
- Low Profile (1mm) SOT-23 (ThinSOT)™ and Thermally Enhanced 8-Pin MSOP Packages
AEC-Q100 data available for specific packages
Typical Application
Description
The LTC®4440 is a high frequency high side N-channel MOSFET gate driver that is designed to operate in applications with VIN voltages up to 80V. The LTC4440 can also withstand and continue to function during 100V VIN transients. The powerful driver capability reduces switching losses in MOSFETs with high gate capacitances. The LTC4440’s pull-up has a peak output current of 2.4A and its pull-down has an output impedance of 1.5Ω.
The LTC4440 features supply independent TTL/CMOS compatible input thresholds with 350mV of hysteresis. The input logic signal is internally level-shifted to the bootstrapped supply, which may function at up to 115V above ground.
The LTC4440 contains both high side and low side undervoltage lockout circuits that disable the external MOSFET when activated.
The LTC4440 is available in the low profile (1mm) SOT-23 and thermally enhanced 8-lead MSOP packages.
| Parameter | LTC4440 | LTC4440-5 | LTC4440A-5 |
|---|---|---|---|
| Max Operating TS | 80V | 60V | 80V |
| Abssolute Max TS | 100V | 80V | 100V |
| MOSFET Gate Drive | 8V to 15V | 4V to 15V | 4V to 15V |
| VCC UV+ | 6.3V | 3.2V | 3.2V |
| VCC UV- | 6.0V | 3.04V | 3.04V |
Packaging
CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.
For complete and up to date package information and drawings, please refer to our packaging page
| Part Number | Package | Code | Temp | Package Drawing |
RoHS |
|---|---|---|---|---|---|
| LTC4440EMS8E#PBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LTC4440EMS8E#TRPBF | MS-8 | MS8 | E | 05-08-1660 | Yes |
| LTC4440ES6#TRMPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LTC4440ES6#TRPBF | SOT-23 | S6 | E | 05-08-1636 | Yes |
| LTC4440IMS8E#PBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC4440IMS8E#TRPBF | MS-8 | MS8 | I | 05-08-1660 | Yes |
| LTC4440IS6#PBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4440IS6#TRMPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
| LTC4440IS6#TRPBF | SOT-23 | S6 | I | 05-08-1636 | Yes |
Order Info
- Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
- 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 | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4440EMS8E#PBF | MS-8 | E | $2.50 | $1.75 | Yes | |
| LTC4440EMS8E#TRPBF | MS-8 | E | $1.81 | Yes | ||
| LTC4440ES6#TRMPBF | SOT-23 | E | $2.57 | $1.83 | Yes | |
| LTC4440ES6#TRPBF | SOT-23 | E | $2.57 | $1.81 | Yes | |
| LTC4440IMS8E#PBF | MS-8 | I | $2.77 | $1.94 | Yes | |
| LTC4440IMS8E#TRPBF | MS-8 | I | $2.00 | Yes | ||
| LTC4440IS6#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC4440IS6#TRMPBF | SOT-23 | I | $2.84 | $2.04 | Yes | |
| LTC4440IS6#TRPBF | SOT-23 | I | $2.84 | $1.99 | Yes | |
| 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.Click here to view our complete list of demo boards
Designed for Automotive and Transportation Applications
AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page
| Part Number | Package | Temp | Price (1-99) |
Price (1k)* |
RoHS | |
|---|---|---|---|---|---|---|
| LTC4440IMS8E#PBF | MS-8 | I | $2.77 | $1.94 | Yes | |
| LTC4440IMS8E#TRPBF | MS-8 | I | $2.00 | Yes | ||
| LTC4440IS6#PBF | SOT-23 | I | $2.84 | Yes | ||
| LTC4440IS6#TRMPBF | SOT-23 | I | $2.84 | $2.04 | Yes | |
| LTC4440IS6#TRPBF | SOT-23 | I | $2.84 | $1.99 | Yes | |
| Buy Now • Request Samples | ||||||
Applications
- Telecommunications Power Systems
- Distributed Power Architectures
- Server Power Supplies
- High Density Power Modules
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
To launch a ready to run LTspice demonstration circuit for this part:
- Step 1: If you have not installed LTspice on this computer, download and install LTspice
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To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.
Models for the following parts are available in LTspice:
LTC4440
LTC4440-5
LTC4440A-5
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.
