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UC28023DWR Fiches technique(PDF) 4 Page - Texas Instruments

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No de pièce UC28023DWR
Description  ECONOMY HIGH-SPEED PWM CONTROLLER
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

UC28023DWR Fiches technique(HTML) 4 Page - Texas Instruments

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UC28023
UC28025
SLUS557F -- MARCH 2003 -- REVISED AUGUST 2010
4
www.ti.com
ELECTRICAL CHARACTERISTICS
TA =--40°C to 105°C,TJ =TA, RT =3.65kΩ,CT =1nF,VCC = 15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE
VREF
Reference voltage
TJ =25°C,
IREF =1mA
5.05
5.10
5.15
V
Line regulation voltage
10 V ≤ VCC ≤ 30 V
2
15
mV
Load regulation voltage
1mA ≤ IREF ≤ 10 mA
5
15
mV
Temperature stability(1)
T(min) <TA <T(max)
0.2
0.4
mV/°C
Total output voltage variation(1)
Line, load, temperature
4.95
5.25
V
Output noise voltage(1)
10 Hz <f<10kHz
50
μV
Long term stability voltage(1)
TJ = 125°C,
1000 hours
5
25
mV
ISS
Short circuit current
VREF =0V
--20
--50
--100
mA
OSCILLATOR
fOSC
Initial accuracy(1)
TJ =25°C
360
400
440
kHz
Voltage stability(1)
10 V ≤ VCC ≤ 30 V
0.2%
2.0%
Temperature stability(1)
T(min) <TA <T(max)
5%
Total voltage variation(1)
Line, temperature
340
460
kHz
VCLOCK_H High-level clock output voltage
3.9
4.5
VCLOCK_L Low-level clock output voltage
2.3
2.9
VRAMP(p)
Ramp peak voltage(1)
2.6
2.8
3.0
V
VRAMP(v)
Ramp valley voltage(1)
0.70
1.00
1.25
V
VRAMP(v-p) Ramp vally-to-peak voltage(1)
1.6
1.8
2.0
ERROR AMPLIFIER
VIN
Input offset voltage
15
mV
IBIAS
Input bias current
0.6
3.0
A
IIN
Input offset current
0.1
1.0
μA
AVOL
Open loop gain
1V ≤ VOUT ≤ 4V
60
95
CMRR
Common mode rejection ratio
1.5 V ≤ VCM ≤ 5.5 V
75
95
dB
PSRR
Power supply rejection ratio
10 V ≤ VCC ≤ 30 V
85
110
dB
IOUT(sink)
Output sink current
V(EAOUT) =1 V
1.0
2.5
mA
IOUT(src)
Output source current
V(EAOUT) =4 V
--0.5
--1.3
mA
VOH
High-level output voltage
I(EAOUT) =--0.5 mA
4.0
4.7
5.0
V
VOL
Low-level output voltage
I(EAOUT) =1 mA
0
0.5
1.0
V
Unity gain bandwidth(1)
3.0
5.5
MHz
Slew rate(1)
6
12
V/μs
PWM COMPARATOR
IBIAS
RAMP bias current
VRAMP =0 V
--1
--5
μA
Maximum duty cycle
UC28023
80%
90%
Maximum duty cycle
UC28025 (2)
40%
45%
Minimum duty cycle
UC28023
0%
Minimum duty cycle
UC28025
0%
EAOUT zero DC threshold
VRAMP =0 V
1.10
1.25
1.40
V
tDELAY
Delay to output time(1)
50
100
ns
(1) Ensured by design. Not production tested.
(2) Tested as 80% minimum for the oscillator which is the equivalent of 40% for UC28025.


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