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UCC28C43DGKG4 Datasheet(PDF) 4 Page - Texas Instruments

Part No. UCC28C43DGKG4
Description  BiCMOS LOW-POWER CURRENT-MODE PWM CONTROLLER
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC28C43DGKG4 Datasheet(HTML) 4 Page - Texas Instruments

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UCC28C40, UCC28C41, UCC28C42, UCC28C43, UCC28C44, UCC28C45
UCC38C40, UCC38C41, UCC38C42, UCC38C43, UCC38C44, UCC38C45
SLUS458E -- AUGUST 2001 -- REVISED OCTOBER 2010
4
www.ti.com
electrical characteristics VDD = 15 V (See Note 1), RT =10kΩ,CT =3.3 nF,CVDD =0.1μF and no load
on the outputs, TA =--40°C to 105°C for the UCC28C4x and TA =0°Cto70°C for the UCC38C4x,
TA =TJ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Output Section
VOUT low (RDS(on) pull-down)
ISINK = 200 mA
5.5
15
VOUThigh (RDS(on) pull-up)
ISOURCE = 200 mA
10
25
Rise tIme
TA =25°C,
CLOAD =1nF
25
50
ns
Fall time
TA =25°C,
CLOAD =1nF
20
40
ns
Undervoltage Lockout Section
UCC38C42, UCC38C44
13.5
14.5
15.5
Start threshold
UCC38C43, UCC38C45
7.8
8.4
9.0
Start threshold
UCC38C40, UCC38C41
6.5
7.0
7.5
V
UCC38C42, UCC38C44
8
9
10
V
Minimum operating voltage
UCC38C43, UCC38C45
7.0
7.6
8.2
Minimum operating voltage
UCC38C40, UCC38C41
6.1
6.6
7.1
PWM Section
Maximum duty cycle
UCC38C42, UCC38C43, UCC38C40, VFB <2.4 V
94%
96%
Maximum duty cycle
UCC38C44, UCC38C45, UCC38C41, VFB <2.4 V
47%
48%
Minimum duty cycle
VFB >2.6 V
0%
Current Supply Section
Start-up current (ISTART-UP)
VDD = Undervoltage lockout start threshold (--0.5 V)
50
100
μA
Operating supply current (IDD)
VFB =VCS =0V
2.3
3.0
mA
NOTE 1:
Adjust VDD above the start threshold before setting at 15 V.
1
2
3
4
8
7
6
5
COMP
FB
CS
RT/CT
VREF
VDD
OUT
GND
PDIP (P) or SOIC (D) PACKAGE
(TOP VIEW)
MSOP (DGK) PACKAGE
(TOP VIEW)
VREF
VDD
OUT
GND
8
7
6
5
1
2
3
4
COMP
FB
CS
RT/CT


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