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Número de pieza | FAN3121 | |
Descripción | (FAN3121 / FAN3122) Low-Side Gate Driver | |
Fabricantes | Fairchild Semiconductor | |
Logotipo | ||
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September 2008
FAN3121 / FAN3122
Single 9A High-Speed, Low-Side Gate Driver
Features
Industry-Standard Pin-out with Enable Input
4.5 to 18V Operating Range
11.4A Peak Sink at VDD = 12V
9.7A Sink / 7.1A Source at VOUT = 6V
Inverting Configuration (FAN3121) and
Non-Inverting Configuration (FAN3122)
Internal Resistors Turn Driver Off If No Inputs
23ns/19ns Typical Rise/Fall Times with 10nF Load
20ns Typical Propagation Delay Time
Choice of TTL or CMOS Input Thresholds
MillerDrive™ Technology
Available in Thermally Enhanced 3x3mm 8-Lead
MLP or 8-Lead SOIC Package (Pb-Free Finish)
Rated from –40°C to +125°C
Applications
Synchronous Rectifier Circuits
High-Efficiency MOSFET Switching
Switch-Mode Power Supplies
DC-to-DC Converters
Motor Control
Description
The FAN3121 and FAN3122 MOSFET drivers are
designed to drive N-channel enhancement MOSFETs in
low-side switching applications by providing high peak
current pulses. The drivers are available with either TTL
(FAN312xT) or CMOS (FAN312xC) input thresholds.
Internal circuitry provides an under-voltage lockout
function by holding the output low until the supply
voltage is within the operating range.
FAN312x drivers incorporate the MillerDrive™
architecture for the final output stage. This bipolar /
MOSFET combination provides the highest peak
current during the Miller plateau stage of the MOSFET
turn-on / turn-off process.
The FAN3121 and FAN3122 drivers implement an
enable function on pin 3 (EN), previously unused in the
industry-standard pin-out. The pin is internally pulled up
to VDD for active HIGH logic and can be left open for
standard operation.
The FAN3121/22 is available in a 3x3mm 8-lead thermally-
enhanced MLP package or an 8-lead SOIC package.
VDD 1
IN 2
EN 3
GND 4
8 VDD
7 OUT
6 OUT
5 GND
Figure 1. FAN3121 Pin Configuration
VDD 1
IN 2
EN 3
GND 4
8 VDD
7 OUT
6 OUT
5 GND
Figure 2. FAN3122 Pin Configuration
© 2008 Fairchild Semiconductor Corporation
FAN3121 / FAN3122 • Rev. 1.0.0
www.fairchildsemi.com
1 page www.DataSheet4U.com
Absolute Maximum Ratings
Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be
operable above the recommended operating conditions and stressing the parts to these levels is not recommended.
In addition, extended exposure to stresses above the recommended operating conditions may affect device
reliability. The absolute maximum ratings are stress ratings only.
Symbol
Parameter
VDD VDD to GND
VEN EN to GND
VIN IN to GND
VOUT OUT to GND
TL Lead Soldering Temperature (10 Seconds)
TJ Junction Temperature
TSTG Storage Temperature
ESD
Electrostatic Discharge
Protection Level
Human Body Model, JEDEC JESD22-A114
Charged Device Model, JEDEC JESD22-C101
Min.
Max. Unit
-0.3 20.0 V
GND - 0.3 VDD + 0.3
GND - 0.3 VDD + 0.3
V
V
GND - 0.3 VDD + 0.3 V
+260
ºC
-55
+150
ºC
-65
+150
ºC
2
kV
1
Recommended Operating Conditions
The Recommended Operating Conditions table defines the conditions for actual device operation. Recommended
operating conditions are specified to ensure optimal performance to the datasheet specifications. Fairchild does not
recommend exceeding them or designing to Absolute Maximum Ratings.
Symbol
Parameter
VDD Supply Voltage Range
VEN Enable Voltage EN
VIN Input Voltage IN
TA Operating Ambient Temperature
Min.
4.5
0
0
-40
Max.
18.0
VDD
VDD
+125
Unit
V
V
V
ºC
© 2008 Fairchild Semiconductor Corporation
FAN3121 / FAN3122 • Rev. 1.0.0
5
www.fairchildsemi.com
5 Page www.DataSheet4U.com
Typical Performance Characteristics
Typical characteristics are provided at 25°C and VDD=12V unless otherwise noted.
Figure 28. Propagation Delay vs. Supply Voltage
Figure 29. Propagation Delay vs. Supply Voltage
Figure 30. Propagation Delay vs. Supply Voltage
Figure 31. Propagation Delay vs. Supply Voltage
Figure 32. Propagation Delays vs. Temperature
© 2008 Fairchild Semiconductor Corporation
FAN3121 / FAN3122 • Rev. 1.0.0
Figure 33. Propagation Delays vs. Temperature
www.fairchildsemi.com
11
11 Page |
Páginas | Total 21 Páginas | |
PDF Descargar | [ Datasheet FAN3121.PDF ] |
Número de pieza | Descripción | Fabricantes |
FAN3121 | (FAN3121 / FAN3122) Low-Side Gate Driver | Fairchild Semiconductor |
FAN3122 | (FAN3121 / FAN3122) Low-Side Gate Driver | Fairchild Semiconductor |
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