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UCC28C41QDRQ1 Datasheet(PDF) 6 Page - Texas Instruments

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Part # UCC28C41QDRQ1
Description  Automotive BiCMOS Low-Power Current-Mode PWM Controllers
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

UCC28C41QDRQ1 Datasheet(HTML) 6 Page - Texas Instruments

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UCC28C40-Q1, UCC28C41-Q1, UCC28C42-Q1
UCC28C43-Q1, UCC28C44-Q1, UCC28C45-Q1
SLUSA12B – DECEMBER 2009 – REVISED OCTOBER 2017
www.ti.com
Product Folder Links: UCC28C40-Q1 UCC28C41-Q1 UCC28C42-Q1 UCC28C43-Q1 UCC28C44-Q1 UCC28C45-Q1
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Copyright © 2009–2017, Texas Instruments Incorporated
Electrical Characteristics (continued)
VVDD = 15 V
(1), R
RT = 10 kΩ, CCT = 3.3 nF, CVDD = 0.1 µF and no load on the outputs, TA = –40°C to 125°C (unless otherwise
noted).
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
(5)
Parameter measured at trip point of latch with VFB = 0 V.
(6)
Gain is defined as ACS = ΔVCOMP / ΔVCS , 0 V ≤ VCS ≤ 900 mV
CURRENT SENSE
ACS
Gain
TA = 25°C, See
(5) (6)
2.75
3
3.15
V/V
TA = Full Range, See
(5) (6)
2.85
3
3.15
V/V
VCS
Maximum input signal
VFB < 2.4 V
0.9
1
1.1
V
PSRR
Power supply rejection ratio
VVDD = 12 V to 18 V
(2) (5)
70
dB
ICS
Input bias current
–0.1
–2
µA
tD
CS to output delay
35
70
ns
COMP to CS offset
VCS = 0 V
1.15
V
OUTPUT
VOUT(low)
RDS(on) pulldown
ISINK = 200 mA
5.5
15
Ω
VOUT(high) RDS(on) pullup
ISOURCE = 200 mA
10
25
Ω
tRISE
Rise tIme
COUT = 1 nF
25
50
ns
tFALL
Fall tIme
COUT = 1 nF
20
40
ns
UNDERVOLTAGE LOCKOUT
VDDON
Start threshold
UCC28C42-Q1, UCC28C44-Q1
13.5
14.5
15.5
V
UCC28C43-Q1, UCC28C45-Q1
7.8
8.4
9
UCC28C40-Q1, UCC28C41-Q1
6.5
7
7.5
VDDOFF
Minimum operating voltage
UCC28C42-Q1, UCC28C44-Q1
8
9
10
V
UCC28C43-Q1, UCC28C45-Q1
7
7.6
8.2
UCC28C40-Q1, UCC28C41-Q1
6.1
6.6
7.1
PWM
DMAX
Maximum duty cycle
UCC28C42-Q1, UCC28C43-Q1, UCC28C40-Q1,
VFB < 2.4 V
94%
96%
UCC28C44-Q1, UCC28C45-Q1, UCC28C41-Q1,
VFB < 2.4 V
47%
48%
DMIN
Minimum duty cycle
VFB > 2.6 V
0%
CURRENT SUPPLY
ISTART-UP Start-up current
VVDD = VDDON – 0.5 V
50
100
µA
IVDD
Operating supply current
VFB = VCS = 0 V
2.3
3
mA


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