Overview
Features and Benefits
- AEC-Q100 Qualified for Automotive Applications
- Bootstrap Supply Voltage to 114V
- Wide VCC Voltage: 7.2V to 13.5V
- Adaptive Shoot-Through Protection
- 2.5A Peak TG Pull-Up Current
- 3A Peak BG Pull-Up Current
- 1.2Ω TG Driver Pull-Down
- 0.55Ω BG Driver Pull-Down
- 5ns TG Fall Time Driving 1nF Load
- 8ns TG Rise Time Driving 1nF Load
- 3ns BG Fall Time Driving 1nF Load
- 6ns BG Rise Time Driving 1nF Load
- Drives Both High and Low Side N-Channel MOSFETs
- Undervoltage Lockout
- Thermally Enhanced 8-Lead MSOP Package
Product Details
The LTC4444 is a high frequency high voltage gate driver that drives two N-channel MOSFETs in a synchronous DC/DC converter with supply voltages up to 100V. This powerful driver reduces switching losses in MOSFETs with high gate capacitance.
The LTC4444 is configured for two supply-independent inputs. The high side input logic signal is internally level-shifted to the bootstrapped supply, which may function at up to 114V above ground.
The LTC4444 contains undervoltage lockout circuits that disable the external MOSFETs when activated. Adaptive shoot-through protection prevents both MOSFETs from conducting simultaneously.
For a similar driver in this product family, please refer to the chart below.
Parameter | LTC4444 | LTC4446 | LTC4444-5 |
Shoot-Through Protection | Yes | No | Yes |
Absolute Max TS | 100V | 100V | 100V |
MOSFET Gate Drive | 7.2V to 13.5V | 7.2V to 13.5V | 4.5V to 13.5V |
VCC UV+ | 6.6V | 6.6V | 4V |
VCC UV– | 6.15V | 6.15V | 3.55V |
Applications
- Distributed Power Architectures
- Automotive Power Supplies
- High Density Power Modules
- Telecommunications
Product Categories
Markets and Technologies
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
-
R419 Reliability Data3/22/2018PDF27 K
-
80V to 150V Non-Isolated DC/DC2/6/2018PDF661K
-
High Voltage Non-Isolated Devices1/5/2018PDF661K
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