
3
UC1724
UC2724
UC3724
ELECTRICAL CHARACTERISTICS:
Unless otherwise stated, V
CC
= 20V, R
T
= 4.3k
, C
T
= 1000pF, no load on any
output and these specifications apply for: –55
o
C < T
A
< 125
o
C for the UC1724, –25
o
C < T
A
< 85
o
C for the UC2724, and
0
o
C < T
A
< 70
o
C for the UC3724. T
A
=T
J
.
PARAMETER
Phi Input (Control Input)
HIGH Input Voltage
LOW Input Voltage
HIGH Input Current
V
IH
= +2.4V
LOW Input Current
V
IL
= +0.4V
Delay to One-Shot
Delay to Output
Output Drivers
Output Low Level
I
SINK
= 50mA
I
SINK
= 250mA
Output High Level (Volts Below V
CC
)
I
SOURCE
= 50 mA
I
SOURCE
= 250 mA
Rise/Fall Time
No load
Total Supply Current
Supply Current
C
T
= 1.4V
TEST CONDITIONS
MIN
TYP
MAX
UNITS
2.0
V
V
μ
A
μ
A
ns
ns
0.8
–220
–600
–130
–300
350
250
0.3
0.5
1.5
1.7
30
0.4
2.1
2.1
2.5
90
V
V
V
V
ns
15
30
mA
UNITRODE CORPORATION
7 CONTINENTAL BLVD. MERRIMACK, NH 03054
TEL. (603) 424-2410 FAX (603) 424-3460
Figure 1. Typical application
UDG-92038
Additional Information
Please refer to the following Unitrode application topics.
[1] Application Note U-127, Unique Chip Pair Simplified
Isolated High-Side Switch Drive by John A. O’Connor.
[2] Design Note DN-35, IGBT Drive Using MOSFET Gate
Drivers by John A. O’Conner.
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