參數(shù)資料
型號： UC2526DWTR
英文描述： LOW POWER VOLTAGE REGULATOR
中文描述： 電壓模式開關電源控制器
文件頁數(shù)： 3/8頁
文件大?。?/td> 618K
代理商： UC2526DWTR
ELECTRICAL CHARACTERISTICS:
PARAMETER
TEST CONDITIONS
UC1526 / UC2526
MIN
TYP
UC3526
TYP
UNITS
MAX
MIN
MAX
Oscillator Section
(Note 5)
Initial Accuracy
Voltage Stability
Temperature Stability
Minimum Frequency
Maximum Frequency
Sawtooth Peak Voltage
Sawtooth Valley Voltage
Error Amplifier Section
(Note 6)
Input Offset Voltage
Input Bias Current
Input Offset Current
DC Open Loop Gain
HIGH Output Voltage
T
J
= + 25°C
+V
IN
= 8 to 35V
Over Operating T
J
R
T
= 150k
, C
T
= 20
μ
F
R
T
= 2k
, C
T
= 1.0nF
+V
IN
= 35V
+V
IN
= 8V
±
3
0.5
7
±
8
1
10
1
±
3
0.5
3
±
8
1
5
1
%
%
%
Hz
kHz
V
V
400
400
3.0
1.0
3.5
3.0
1.0
3.5
0.5
0.5
R
S
≤
2k
2
5
2
10
mV
nA
nA
dB
V
-350
35
72
4.2
-1000
100
-350
35
72
4.2
-2000
200
R
L
≥
10M
V
PIN1
-V
PIN2
≥
150mV, I
SOURCE
=
100
μ
A
V
PIN2
-V
PIN1
≥
150mV, I
SINK
=
100
μ
A
Rs
≤
12k
+V
IN
= 12 to 18V
64
3.6
60
3.6
LOW Output Voltage
Common Mode Rejection
Supply Voltage Rejection
PWM Comparator
(Note 5)
Minimum Duty Cycle
Maximum Duty Cycle
Digital Ports (SYNC, SHUTDOWN, and RESET)
HIGH Output Voltage
LOW Output Voltage
HIGH Input Current
LOW Input Current
Current LImit Comparator
(Note 7)
Sense Voltage
Input Bias Current
Soft-Start Section
Error Clamp Voltage
Cs Charging Current
Output Drivers (Each Output)
(Note 8)
HIGH Output Voltage
0.2
94
80
0.4
0.2
94
80
0.4
V
dB
dB
70
66
70
66
V
COMPENSATION
= +0.4V
V
COMPENSATION
= +3.6V
0
0
%
%
45
49
45
49
I
SOURCE
=40
μ
A
I
SINK
= 3.6mA
V
IH
= +2.4V
V
IL
= +0.4V
2.4
4.0
0.2
-125
-225
2.4
4.0
0.2
-125
-225
V
V
μ
A
μ
A
0.4
-200
-360
0.4
-200
-360
R
S
≤
50
90
100
-3
110
-10
80
100
-3
120
-10
mV
μ
A
RESET = +0.4V
RESET =+2.4V
0.1
100
0.4
150
0.1
100
0.4
150
V
μ
A
50
50
I
SOURCE
= 20mA
I
SOURCE
= 100mA
I
SINK
= 20mA
I
SINK
= 100mA
V
C
= 40V
C
L
= 1000pF
C
L
= 1000pF
12.5
12
13.5
13
0.2
1.2
50
0.3
0.1
12.5
12
13.5
13
0.2
1.2
50
0.3
0.1
V
V
V
V
μ
A
μ
s
μ
s
LOW Output Voltage
0.3
2.0
150
0.6
0.2
0.3
2.0
150
0.6
0.2
Collector Leakage
Rise Time
Fall Time
Power Consumption
(Note 9
)
Standby Current
SHUTDOWN
____________
=
+
0.4V
18
30
18
30
mA
+V
IN
= 15V, and over operating ambient temperature, unless otherwise
specified, T
A
= T
J.
UC1526
UC2526
UC3526
Note 4: I
L
= 0mA.
Note 5: F
OSC
= 40kHz (R
T
= 4.12k
±
1%, C
T
= 0.1
μ
F
±
1%,
R
D
= 0
)
Note 6: V
CM
= 0 to +5.2V
Note 8: V
C
= +15V
Note 9: +V
IN
= +35V, R
T
= 4.12k
3
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