M
1.5A High-Speed 30V MOSFET Driver s
TC4431/TC4432
Features
• High Peak Output Current – 1.5A
• Wide Operating Range
- 4.5V to 30V
• High Capacitive Load Drive Capability – 1000pF
in 25nsec
• Short Delay Times – <78nsec Typ.
• Low Supply Current:
- With Logic "1" Input – 2.5mA
- With Logic "0" Input – 300µA
• Low Output Impedance – 7Ω
• Latch-Up Protected: Will Withstand >300mA
Reverse Current
• ESD Protected – 4kV
Applications
•
•
•
Device Selection Table
Part Number Package Temp. Range
TC4431COA 8-Pin SOIC 0°C to +70°C
TC4431CPA 8-Pin PDIP 0°C to +70°C
TC4431EJA 8-Pin CERDIP -40°C to +85°C
TC4431EOA 8-Pin SOIC -40°C to +85°C
TC4431EPA 8-Pin PDIP -40°C to +85°C
TC4432COA 8-Pin SOIC 0°C to +70°C
TC4432CPA 8-Pin PDIP 0°C to +70°C
TC4432EJA 8-Pin CERDIP -40°C to +85°C
TC4432EOA 8-Pin SOIC -40°C to +85°C
TC4432EPA 8-Pin PDIP -40°C to +85°C
Package Type
8-Pin PDIP/SOIC/CERDIP
V
1
DD
2
IN
TC4431
GND
V
DD
GND
IN
3
4
2
1
2
TC4432
3
4
2
Noninverting
Inverting
LOCK DIS
LOCK DIS
NOTE: SOIC pinout is identical to DIP.
8
7
6
5
7
6
78OUT
6
5
7
6
V
DD
OUT
OUT
GND
V
DD
OUT
GND
General Description
The TC4431/TC4432 are 30V CMOS buffer/drivers
suitable for use in high-side driver applications. They
will not latch up u nder any conditio ns within t heir po wer
and voltage ratings. They can accept, without damage
or logic upset, up to 30 0mA of reverse curr ent (of either
polarity) being forced back into their outputs. All
terminals are fully protected against up to 4kV of
electrostatic discharge.
Under-voltage lockout circuitry forces the output to a
"low" state when the input supply voltage drops below
7V . For oper ation in lo wer volt a ges, disab le the loc kout
and start-up circuit by grounding pin 3 (LOCK DIS); for
all other situations, pin 3 (LOCK DIS) should be left
floating. The under-voltage lockout and start-up circuit
gives brown out protection when driving MOSFETS.
2002 Microchip Technology Inc. DS21424B-page 1
TC4431/TC4432
Functional Block Diagram
8
V
DD
Input
3
LOCK DIS.
2
GND
4, 5
Effective
Input
C = 10pF
2mA
250mV
Inverted
TC4431
Non-Inverted
TC4432
UV LOCK
TC4431/TC4432
Inverting/Noninverting
7
OUT
OUT
6
DS21424B-page 2 2002 Microchip Technology Inc.
TC4431/TC4432
1.0 ELECTRICAL
CHARACTERISTICS
Absolute Maximum Ratings*
Supply Voltage....................................................... 36V
*Stresses above those listed under "Absolute Maximum
Ratings" may cause permanent damage to the device. These
are stress ratings only and functional operation of the device
at these or any other conditions above those indicated in the
operation sections of the specifications is not implied.
Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability.
Input Voltage (Note 1)....................VDD + 0.3V to GND
Package Power Dissipation (T
≤ 70°C)
A
PDIP........................................................ 730mW
CERDIP................................................... 800mW
SOIC........................................................ 470mW
Package Thermal Resistance
CERDIP R
CERDIP R
PDIP R
PDIP R
SOIC R
SOIC R
........................................ 150°C/W
θJ-A
......................................... 50°C/W
θJ-C
............................................. 125°C/W
θJ-A
............................................... 42°C/W
θJ-C
............................................ 250°C/W
θJ-A
.............................................. 75°C/W
θJ-C
Operating Temperature Range
C Version.........................................0°C to +70°C
E Version..................................... -40°C to +85°C
Storage Temperature Range ............. -65°C to +150°C
TC4431/TC4432 ELECTRICAL SPECIFICATIONS
Electrical Characteristics: TA = +25°C, with 4.5V ≤ V
Symbol Parameter Min Typ Max Units Test Conditions
Input
V
IH
V
IL
I
IN
Output
V
OH
V
OL
R
O
I
PK
I
REV
Switching Ti me (Note 2)
t
R
t
F
t
D1
t
D2
Power Supply
I
S
V
S
V
DO
Note 1: For inputs >12V, add a 1kΩ resistor in series with the input. See “Typical Characteristics” graph for input current.
Logic 1, High Input Voltage 2.4 ——V
Logic 0, Low Input Voltage ——0.8 V
Input Current (Note 1) -1 — 1 µA0V ≤ V
High Output Voltage VDD – 1.0 VDD – 0.8 — VI
Low Output Voltage ——0.025 V
Output Resistance — 710Ω I
Peak Output Current —
Latch-Up Protection
Withstand Reverse Current
Rise Time — 25 40 nsec Figure 3-1
Fall Time — 33 50 nsec Figure 3-1
Delay Time — 62 80 nsec Figure 3-1
Delay Time — 78 90 nsec Figure 3-1
Power Supply Current —
Start-up Threshold — 8.4 10 V
Drop-out Threshold 7 7.7 — V Note 3
2: Switching times are ensured by design.
3: For operation below 7V, pin 3 (LOCK DIS
floating.
) should be tied to ground to disable the lockout and start-up circuit, otherwise, pin 3 must be left
≤ 30V, unless otherwise noted..
DD
≤ 12V
IN
= 100mA
OUT
= 10mA, VDD = 30V
OUT
—
0.3 ——A Duty cycle ≤ 2%, t ≤ 300µsec
—
3.0
1.5
2.5
0.3
—
—
0.4
4
A Source: VDD = 30V
Sink: V
mA VIN = 3V
V
IN
= 0V
DD
= 30V
2002 Microchip Technology Inc. DS21424B-page 3
TC4431/TC4432
TC4431/TC4432 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: Over operating temperature range with 4.5V ≤ V
Symbol Parameter Min Typ Max Units Test Conditions
Input
V
IH
V
IL
I
IN
Logic 1, High Input Voltage 2.4 ——V
Logic 0, Low Input Voltage ——0.8 V
Input Current (Note 1) -1 — 1 µA0V ≤ V
Output
V
OH
V
OL
R
O
High Output Voltage VDD – 1.2 ——VI
Low Output Voltage ——0.025 V
Output Resistance ——10 Ω I
Switching Time (Note 2)
t
R
t
F
t
D1
t
D2
Rise Time ——60 nsec Figure 3-1
Fall Time ——70 nsec Figure 3-1
Delay Time ——100 nsec Figure 3-1
Delay Time ——110 nsec Figure 3-1
Power Supply
I
S
Power Supply Current —
—
V
S
V
DO
Note 1: For inputs > 12V, add a 1kΩ resistor in series with the input. See “Typical Characteristics” graph for input current.
Start-up Threshold — 8.4 10 V
Drop-out Threshold 7 7.7 — V Note 3
2: Switching times are e nsured by design.
3: For operation below 7V, pin 3 (LOCK DIS
floating.
) should be tied to ground to disable the lockout and start-up circuit, otherwise, pin 3 must be left
—
—
≤ 30V, unless otherwise noted.
DD
= 100mA
OUT
= 10mA, VDD = 30V
OUT
6
0.7
mA VIN = 3V
= 0V
V
IN
≤ 12V
IN
DS21424B-page 4 2002 Microchip Technology Inc.
2.0 PIN DESCRIPTIONS
The descriptions of the pins are listed in Table 2-1.
TABLE 2-1: PIN FUNCTION TABLE
Pin No.
(8-Pin PDIP,
SOIC, CERDIP)
1V
2IN
3LOCK DIS
4 GND Ground.
5 GND Ground.
6OUT
7OUT
8V
Symbol Description
DD
DD
TC4431/TC4432
2002 Microchip Technology Inc. DS21424B-page 5
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