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UC3825A датащи(PDF) 4 Page - Texas Instruments

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номер детали UC3825A
подробное описание детали  HIGH-SPEED PWM CONTROLLER
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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UC3825A датащи(HTML) 4 Page - Texas Instruments

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UC1823A, UC2823A, UC2823B,
UC3823A, UC3823B, UC1825A,
UC2825A, UC2825B, UC3825A, UC3825B
SLUS334E − AUGUST 1995 − REVISED SEPTEMBER 2010
www.ti.com
4
ELECTRICAL CHARACTERISTICS
TA = −55°C to 125°C for the UC1823A/UC1825A, TA = −40°C to 85°C for the UC2823x/UC2825x, TA = 0°C to 70°C for the UC3823x/UC3825x,
RT = 3.65 kΩ, CT = 1 nF, VCC = 12 V, TA = TJ (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
REFERENCE, VREF
VO
Ouput voltage range
TJ = 25°C, IO = 1 mA
5.05
5.1
5.15
V
Line regulation
12 V ≤ VCC ≤ 20 V
2
15
mV
Load regulation
1 mA ≤ IO ≤ 10 mA
5
20
mV
Total output variation
Line, load, temperature
5.03
5.17
V
Temperature stability(1)
T(min) < TA < T(max)
0.2
0.4
mV/°C
Output noise voltage(1)
10 Hz < f < 10 kHz
50
μVRMS
Long term stability(1)
TJ = 125°C, 1000 hours
5
25
mV
Short circuit current
VREF = 0 V
30
60
90
mA
OSCILLATOR
f
Initial accuracy(1)
TJ = 25°C
375
400
425
kHz
fOSC
Initial accuracy(1)
RT = 6.6 kΩ, CT = 220 pF, TA = 25°C
0.9
1
1.1
MHz
Total variation(1)
Line, temperature
350
450
kHz
Total variation(1)
RT = 6.6 kΩ, CT = 220 pF,
0.85
1.15
MHz
Voltage stability
12 V < VCC < 20 V
1%
Temperature stability(1)
T(min) < TA < T(max)
+/−
5%
High-level output voltage, clock
3.7
4
Low-level output voltage, clock
0
0.2
Ramp peak
2.6
2.8
3
V
Ramp valley
0.7
1
1.25
V
Ramp valley-to-peak
1.6
1.8
2
IOSC
Oscillator discharge current
RT = OPEN, VCT = 2 V
9
10
11
mA
ERROR AMPLIFIER
Input offset voltage
2
10
mV
Input bias current
0.6
3
A
Input offset current
0.1
1
μA
Open loop gain
1 V < VO < 4 V
60
95
CMRR
Common mode rejection ratio
1.5 V < VCM < 5.5 V
75
95
dB
PSRR
Power supply rejection ratio
12 V < VCC < 20 V
85
110
dB
IO(sink)
Output sink current
VEAOUT = 1 V
1
2.5
mA
IO(src)
Output source current
VEAOUT = 4 V
−1.3
−0.5
mA
High-level output voltage
IEAOUT = −0.5 mA
4.5
4.7
5
V
Low-level output voltage
IEAOUT = −1 mA
0
0.5
1
V
Gain bandwidth product
f = 200 kHz
6
12
Mhz
Slew rate(1)
6
9
V/μs
(1) Ensured by design. Not production tested.


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