FAN3225C Fairchild Semiconductor, FAN3225C Datasheet - Page 3

• Manufacturer Part Number: FAN3225C
• 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
• Manufacturer: Fairchild Semiconductor

© 2007 Fairchild Semiconductor Corporation
FAN3223 / FAN3224 / FAN3225 • Rev. 1.0.8
Pin Definitions
Output Logic
Note:
7.
Name
OUTA
OUTB
OUTA
OUTB
GND
INA+
INB+
ENA
ENB
VDD
GND
INA-
INB-
ENA
INA
INB
P1
INA
INB
Default input signal if no external connection is made.
ENx
1
1
0
0
1
2
3
4
FAN3223 (x=A or B)
(7)
(7)
Enable Input for Channel A. Pull pin LOW to inhibit driver A. ENA has TTL thresholds for both TTL and
CMOS INx threshold.
Enable Input for Channel B. Pull pin LOW to inhibit driver B. ENB has TTL thresholds for both TTL and
CMOS INx threshold.
Ground. Common ground reference for input and output circuits.
Input to Channel A.
Non-Inverting Input to Channel A. Connect to VDD to enable output.
Inverting Input to Channel A. Connect to GND to enable output.
Input to Channel B.
Non-Inverting Input to Channel B. Connect to VDD to enable output.
Inverting Input to Channel B. Connect to GND to enable output.
Gate Drive Output A: Held LOW unless required input(s) are present and V
Gate Drive Output B: Held LOW unless required input(s) are present and V
Gate Drive Output A (inverted from the input): Held LOW unless required input is present and V
above UVLO threshold.
Gate Drive Output B (inverted from the input): Held LOW unless required input is present and V
above UVLO threshold.
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.
Supply Voltage. Provides power to the IC.
FAN3223
A
B
INx
1
1
0
0
(7)
(7)
8
7
6
5
ENB
OUTA
VDD
OUTB
OUTx
0
0
1
0
Figure 4. Pin Assignments (Repeated)
GND
ENA
INA
INB
ENx
1
1
1
2
3
4
0
0
FAN3224 (x=A or B)
(7)
(7)
Pin Description
FAN3224
A
B
3
INx
0
0
1
1
(7)
(7)
8
7
6
5
ENB
OUTA
VDD
OUTB
OUTx
0
0
0
1
INB+
GND
INB
INA
-
-
INx+
DD
DD
0
0
1
1
FAN3225 (x=A or B)
(7)
(7)
1
2
3
4
is above UVLO threshold.
is above UVLO threshold.
FAN3225
+
+
-
-
INx−
A
B
1
1
0
0
(7)
(7)
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8
7
6
5
DD
DD
OUTx
INA+
OUTA
VDD
OUTB
is
is
0
0
1
0