DocumentationDatasheet
Reliability Data
Press Release
- 100V High Speed Synchronous N-Channel 3Amp MOSFET Driver for High Efficiency Step-Down or Step-Up DC/DC Converters
- 100V High Speed Synchronous N-Channel MOSFET Drivers Operate from -40°C to 150°C
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Features
- 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-Pin MSOP Package
Typical Application
Description
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.
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Package Variations and Pricing
| Part Number | Package | Pins | Temp | Price (1-99) |
Price (1k)* |
|---|---|---|---|---|---|
| LTC4444EMS8E#PBF | MSOP | 8 | E | $2.61 | $1.69 |
| LTC4444EMS8E#TRPBF | MSOP | 8 | E | $1.75 | |
| LTC4444EMS8E-5#PBF | MSOP | 8 | E | $2.42 | $1.69 |
| LTC4444EMS8E-5#TRPBF | MSOP | 8 | E | $1.75 | |
| LTC4444HMS8E#PBF | MSOP | 8 | H | $2.86 | $2.00 |
| LTC4444HMS8E#TRPBF | MSOP | 8 | H | $2.06 | |
| LTC4444HMS8E-5#PBF | MSOP | 8 | H | $2.86 | $2.00 |
| LTC4444HMS8E-5#TRPBF | MSOP | 8 | H | $2.06 | |
| LTC4444IMS8E#PBF | MSOP | 8 | I | $2.80 | $1.81 |
| LTC4444IMS8E#TRPBF | MSOP | 8 | I | $1.87 | |
| LTC4444IMS8E-5#PBF | MSOP | 8 | I | $2.59 | $1.81 |
| LTC4444IMS8E-5#TRPBF | MSOP | 8 | I | $1.87 | |
| LTC4444MPMS8E | MSOP | 8 | MP | $4.11 | $2.88 |
| LTC4444MPMS8E#PBF | MSOP | 8 | MP | $4.11 | $2.88 |
| LTC4444MPMS8E#TR | MSOP | 8 | MP | $2.94 | |
| LTC4444MPMS8E#TRPBF | MSOP | 8 | MP | $2.94 | |
| LTC4444MPMS8E-5 | MSOP | 8 | MP | $4.11 | $2.88 |
| LTC4444MPMS8E-5#PBF | MSOP | 8 | MP | $4.11 | $2.88 |
| LTC4444MPMS8E-5#TR | MSOP | 8 | MP | $2.94 | |
| LTC4444MPMS8E-5#TRPBF | MSOP | 8 | MP | $2.94 | |
| LTC4444IMS8E | MSOP | 8 | I | $5.60 | $3.62 |
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.