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UCC3895PW Datasheet(PDF) 4 Page - Texas Instruments

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Part # UCC3895PW
Description  BiCMOS ADVANCED PHASE-SHIFT PWM CONTROLLER
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

UCC3895PW Datasheet(HTML) 4 Page - Texas Instruments

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UCC1895
UCC2895
UCC3895
SLUS157L − DECEMBER 1999 − REVISED APRIL 2008
4
www.ti.com
ELECTRICAL CHARACTERISTICS VDD = 12 V, RT = 82 kΩ, CT = 220 pF, RDELAB = 10 kΩ, RDELCD = 10 kΩ, CREF = 0.1 µF,
CVDD = 0.1 µF and no load on the outputs, TA = TJ. TA = 0°C to 70°C for UCC3895x, TA = −40°C to 85°C for UCC2895x and TA = −55°C to 125°C
for the UCC1895x. (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
UVLO (UNDERVOLTAGE LOCKOUT)
UVLO(on)
Start-up voltage threshold
10.2
11
11.8
UVLO(off)
Minimum operating voltage after
start-up
8.2
9
9.8
V
UVLO(hys)
Hysteresis
1.0
2.0
3.0
SUPPLY
ISTART
Start-up current
VDD = 8 V
150
250
µA
IDD
Operating current
5
6
mA
VDD_CLAMP
VDD clamp voltage
IDD = 10 mA
16.5
17.5
18.5
V
VOLTAGE REFERENCE
TJ = 25°C
4.94
5.00
5.06
VREF
Output voltage
10 V < VDD < VDD_CLAMP,
0 mA < IREF < 5 mA,
temperature
4.85
5
5.15
V
ISC
Short circuit current
REF = 0 V,
TJ = 25°C
10
20
mA
ERROR AMPLIFIER
Common-mode input voltage range
−0.1
3.6
V
VIO
Offset voltage
−7
7
mV
IBIAS
Input bias current (EAP, EAN)
−1
1
µA
EAOUT_VOH
High-level output voltage
EAP−EAN = 500 mV,
IEAOUT = −0.5 mA
4.0
4.5
5.0
V
EAOUT_VOL
Low-level output voltage
EAP−EAN = −500 mV, IEAOUT = 0.5 mA
0
0.2
0.4
V
ISOURCE
Error amplifier output source current
EAP−EAN = 500 mV,
EAOUT = 2.5 V
1.0
1.5
mA
ISINK
Error amplifier output sink current
EAP−EAN = −500 mV, EAOUT = 2.5 V
2.5
4.5
mA
AVOL
Open-loop dc gain
75
85
dB
GBW
Unity gain bandwidth(1)
5.0
7.0
MHz
Slew rate(1)
1 V < EAN < 0 V,
EAP = 500 mV
0.5 V < EAOUT < 3.0 V
1.5
2.2
V/
µs
No-load comparator turn-off
threshold
0.45
0.50
0.55
No-load comparator turn-on
threshold
0.55
0.60
0.69
V
No-load comparator hysteresis
0.035
0.10
0.165
OSCILLATOR
fOSC
Frequency
TJ = 25°C
473
500
527
kHz
Frequency total variation(1)
Over line, temperature
2.5%
5%
VIH_SYNC
SYNC input threshold, SYNC
2.05
2.10
2.40
VOH_SYNC
High-level output voltage, SYNC
ISYNC = −400 µA,
VCT = 2.6 V
4.1
4.5
5.0
V
VOL_SYNC
Low-level output voltage, SYNC
ISYNC = 100 µA,
VCT = 0.0 V
0.0
0.5
1.0
V
Sync output pulse width
LOADSYNC = 3.9 kΩ and 30 pF in parallel
85
135
ns
VRT
Timing resistor voltage
2.9
3
3.1
VCT(peak)
Timing capacitor peak voltage
2.25
2.35
2.55
V
VCT(valley)
Timing capacitor valley voltage
0.0
0.2
0.4
V
(1)
Ensured by design. Not production tested.


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