LTC4446 Linear Technology, LTC4446 Datasheet
LTC4446
Available stocks
Related parts for LTC4446
LTC4446 Summary of contents
Page 1
... The powerful driver ca- pability reduces switching losses in MOSFETs with high gate capacitance. The LTC4446’s pull-up for the top gate driver has a peak output current of 2.5A and its pull-down has an output impedance of 1.2Ω. The pull-up for the bot- tom gate driver has a peak output current of 3A and the pull-down has an output impedance of 0.55Ω ...
Page 2
... LTC4446EMS8E#PBF LTC4446EMS8E#TRPBF LTC4446IMS8E#PBF LTC4446IMS8E#TRPBF Consult LTC Marketing for parts specifi ed with wider operating temperature ranges. *The temperature grade is identifi label on the shipping container. Consult LTC Marketing for information on non-standard lead based fi nish parts. For more information on lead free part marking, go to: For more information on tape and reel specifi ...
Page 3
... Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: The LTC4446E is guaranteed to meet specifi cations from 0°C to 85°C. Specifi cations over the –40°C to 85°C operating temperature range are assured by design, characterization and correlation ...
Page 4
... LTC4446 TYPICAL PERFORMANCE CHARACTERISTICS Boost Supply Current vs Temperature 400 V = BOOST = 12V TINP = 12V GND BINP = 0V 350 300 TINP = 0V 250 BINP = 12V 200 150 100 50 TINP = BINP = 0V 0 –40 –25 – 110 125 TEMPERATURE (°C) 4446 G04 Input Thresholds (TINP , BINP) vs Supply Voltage 3 ...
Page 5
... GND PLH(BG PHL(BG –40 4444 G16 I BOOST 100 VCC 0.1 800 600 1000 4446 G18 LTC4446 www.DataSheet4U.com Output Driver Pull-Down Resistance vs Temperature 2.0 1.8 BOOST-TS = 12V 1.6 BOOST- 1.4 R DS(TG) 1.2 BOOST-TS = 14V 1 12V 0.4 R DS(BG) 0.2 0 –40 –25 – ...
Page 6
... LTC4446 PIN FUNCTIONS TINP (Pin 1): High Side Input Signal. Input referenced to GND. This input controls the high side driver output (TG). BINP (Pin 2): Low Side Input Signal. This input controls the low side driver output (BG). V (Pin 3): Supply. This pin powers input buffers, logic ...
Page 7
... Output Stage A simplifi ed version of the LTC4446’s output stage is shown in Figure 1. The pull-up devices on the BG and TG outputs are NPN bipolar junction transistors (Q1 and Q2). The BG and TG outputs are pulled up to within an NPN V of their positive rails (V and BOOST, respectively) ...
Page 8
... A similar effect occurs on TG due to the C and C capacitances of the high side MOSFET. GD The powerful output driver of the LTC4446 reduces the switching losses of the power MOSFET, which increase with transition time. The LTC4446’s high side driver is capable of driving a 1nF load with 8ns rise and 5ns fall ...
Page 9
... avoid damage due to power dissipation, the LTC4446 includes a temperature monitor that will pull BG and TG low if the junction temperature rises above 160°C. Normal operation will resume when the junction temperature cools to less than 135°C. Bypassing and Grounding ...
Page 10
... LTC4446 TYPICAL APPLICATION • • • • • 10 • • • • • • www.DataSheet4U.com 4446f ...
Page 11
... TYP 0.53 ± 0.152 1.10 (.021 ± .006) (.043) DETAIL “A” MAX SEATING PLANE 0.22 – 0.38 (.009 – .015) 0.65 TYP (.0256) BSC LTC4446 www.DataSheet4U.com 2.06 ± 0.102 (.081 ± .004) 1 1.83 ± 0.102 (.072 ± .004) 8 0.52 (.0205 REF 3.00 ± 0.102 (.118 ± .004) ...
Page 12
... LTC4444-5 High Voltage Synchronous N-Channel MOSFET Driver trademark of Linear Technology Corporation. SENSE Linear Technology Corporation 12 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 FAX: (408) 434-0507 ● LTC4446 Fast Turn-On/Turn-Off DC Switch 12V 3 15k V 100V CC 1 200Ω TINP LTC4446 4 ...