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UCC28230 Datasheet(PDF) 5 Page - Texas Instruments

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Part No. UCC28230
Description  Advanced PWM Controller For Bus Converters
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

UCC28230 Datasheet(HTML) 5 Page - Texas Instruments

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UCC28230
UCC28231
SLUS814 – FEBRUARY 2008
ELECTRICAL CHARACTERISTICS (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITION
MIN
TYP
MAX
UNITS
Current Sense, Cycle-by-Cycle Current Limit With Hiccup, Short Circuit Protection With Latch OFF
VCS_LIM CS pin cycle-by-cycle threshold
0.485
0.5
0.515
V
Propagation delay from CS to O1_D and
TCS
Input pulse at CS from zero to 0.6 V
25
ns
O2_D outputs
Discharge current to set cycle-by-cycle
IDS
CS = 0.6 V, VSS = 4 V
15
20
25
µA
current limit duration
Hiccup OFF time threshold
3.1
3.4
3.7
V
Discharge current to set hiccup mode OFF
IHCC
1.9
2.5
3.1
µA
time
VCS_SC
CS pin short circuit protection threshold
0.65
0.7
0.75
V
Outputs O1_D, O2_D, O1_DIN, O2_DIN
Sink/source peak current
0.2
A
Rise time
CLOAD = 100 pF
8
20
ns
Fall time
CLOAD = 100 pF
4
20
RSRC
Output source resistance
IOUT = 20 mA
15
20
30
RSINK
Output sink resistance
IOUT = 20 mA
5
10
25
Pins 7 and 9 pulses matching at FSW = 100
Duty cycle matching
35
ns
kHz
Thermal Shutdown
Rising threshold
150
160
170
Falling threshold
130
140
150
°C
Hysteresis
20
Copyright © 2008, Texas Instruments Incorporated
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Product Folder Link(s): UCC28230 UCC28231


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