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PDF FAN3225 Data sheet ( Hoja de datos )
| Número de pieza | FAN3225 | |
| Descripción | (FAN3223 - FAN3225) Low-Side Gate Drivers | |
| Fabricantes | Fairchild Semiconductor | |
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May 2008
FAN3223 / FAN3224 / FAN3225
Dual 4A High-Speed, Low-Side Gate Drivers
Features
Industry-Standard Pinouts
4.5 to 18V Operating Range
5A Peak Sink/Source at VDD = 12V
4.3A Sink / 2.8A Source at VOUT = 6V
Choice of TTL or CMOS Input Thresholds
Three Versions of Dual Independent Drivers:
- Dual Inverting + Enable (FAN3223)
- Dual Non-Inverting + Enable (FAN3224)
- Dual-Inputs (FAN3225)
Internal Resistors Turn Driver Off If No Inputs
MillerDrive™ Technology
12ns / 9ns Typical Rise/Fall Times with 2.2nF Load
Typical Propagation Delay Under 20ns Matched
within 1ns to the Other Channel
Double Current Capability by Paralleling Channels
8-Lead 3x3mm MLP or 8-Lead SOIC Package
Rated from –40°C to +125°C Ambient
www.DataShAeept4pUl.iccomations
Switch-Mode Power Supplies
High-Efficiency MOSFET Switching
Synchronous Rectifier Circuits
DC-to-DC Converters
Motor Control
Description
The FAN3223-25 family of dual 4A gate drivers is
designed to drive N-channel enhancement-mode
MOSFETs in low-side switching applications by
providing high peak current pulses during the short
switching intervals. The driver is available with either
TTL or CMOS input thresholds. Internal circuitry
provides an under-voltage lockout function by holding
the output LOW until the supply voltage is within the
operating range. In addition, the drivers feature
matched internal propagation delays between A and B
channels for applications requiring dual gate drives with
critical timing, such as synchronous rectifiers. This also
enables connecting two drivers in parallel to effectively
double the current capability driving a single MOSFET.
The FAN322X drivers incorporate MillerDrive™
architecture for the final output stage. This bipolar-
MOSFET combination provides high current during the
Miller plateau stage of the MOSFET turn-on / turn-off
process to minimize switching loss, while providing rail-
to-rail voltage swing and reverse current capability.
The FAN3223 offers two inverting drivers and the
FAN3224 offers two non-inverting drivers. Each device
has dual independent enable pins that default to ON if
not connected. In the FAN3225, each channel has dual
inputs of opposite polarity, which allows configuration
as non-inverting or inverting with an optional enable
function using the second input. If one or both inputs
are left unconnected, internal resistors bias the inputs
such that the output is pulled LOW to hold the power
MOSFET OFF.
FAN3223
© 2007 Fairchild Semiconductor Corporation
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.5
FAN3224
Figure 1. Pin Configurations
FAN3225
www.fairchildsemi.com
1 page  
Block Diagrams
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Figure 7. FAN3225 Block Diagram
© 2007 Fairchild Semiconductor Corporation
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.5
5
www.fairchildsemi.com
5 Page 
Typical Performance Characteristics
Typical characteristics are provided at 25°C and VDD=12V unless otherwise noted.
Figure 20. Input Thresholds vs. Supply Voltage
Figure 21. Input Thresholds vs. Supply Voltage
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Figure 22. Input Threshold % vs. Supply Voltage
Figure 23. Input Thresholds vs. Temperature
Figure 24. Input Thresholds vs. Temperature
© 2007 Fairchild Semiconductor Corporation
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.5
11
www.fairchildsemi.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet FAN3225.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| FAN3223 | (FAN3223 - FAN3225) Low-Side Gate Drivers | Fairchild Semiconductor |
| FAN3224 | (FAN3223 - FAN3225) Low-Side Gate Drivers | Fairchild Semiconductor |
| FAN3225 | (FAN3223 - FAN3225) Low-Side Gate Drivers | Fairchild Semiconductor |
| FAN3226 | (FAN3226 - FAN3229) Low-Side Gate Drivers | Fairchild Semiconductor |
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