FAN3121T Fairchild Semiconductor, FAN3121T Datasheet - Page 3

• Manufacturer Part Number: FAN3121T
• 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
• Manufacturer: Fairchild Semiconductor

© 2008 Fairchild Semiconductor Corporation
FAN3121 / FAN3122 • Rev. 1.0.0
Pin Definitions
Output Logic
Note:
7.
FAN3121
Figure 5.
Default input signal if no external connection is made.
4, 5
6, 7
1, 8
3
2
EN
1
1
0
0
(7)
(7)
VDD
GND
FAN3121 Pin Assignments (Repeated)
EN
FAN3122
IN
4, 5
6, 7
1, 8
1
3
2
2
3
4
FAN3121
1
1
IN
Name
0
0
(7)
(7)
GND
OUT
OUT
V
EN
P1
IN
DD
7
6
8
5
VDD
Enable Input. Pull pin LOW to inhibit driver. EN has logic thresholds for both
TTL and CMOS IN thresholds.
Ground. Common ground reference for input and output circuits.
Input.
Gate Drive Output. Held LOW unless required input is present and V
above the UVLO threshold.
Gate Drive Output (inverted from the input). Held LOW unless required input
is present and V
Supply Voltage. Provides power to the IC.
Thermal Pad (MLP only). Exposed metal on the bottom of the package; may
be left floating or connected to GND; NOT suitable for carrying current.
GND
OUT
OUT
OUT
0
0
1
0
DD
is above the UVLO threshold.
Figure 6.
3
Description
1
1
EN
0
0
(7)
(7)
VDD
GND
FAN3122 Pin Assignments (Repeated)
EN
IN
1
3
4
2
FAN3122
0
0
IN
1
1
(7)
(7)
7
6
8
5
GND
VDD
OUT
OUT
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OUT
0
0
0
1
DD
is