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参数资料
| 型号： | 5962-8992002VA |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | 1 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, CDIP18 |
| 封装： | CERAMIC, DIP-18 |
| 文件页数： | 8/14页 |
| 文件大小： | 1121K |
| 代理商： | 5962-8992002VA |
PARAMETER
TEST CONDITIONS
UC1841 / UC2841
UC3841
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
Ramp Generator
Ramp Current, Minimum
ISENSE = -10
A
-11
-14
-11
-14
A
Ramp Current, Maximum
ISENSE = 1.0mA
-0.9
-.95
-0.9
-.95
mA
Ramp Valley
0.3
0.4
0.6
0.3
0.4
0.6
V
Ramp Peak
Clamping Level
3.9
4.2
4.5
3.9
4.2
4.5
V
Error Amplifier
Input Offset Voltage
VCM = 5.0V
0.5
5
2
10
mV
Input Bias Current
0.5
2
1
5
A
Input Offset Current
0.5
A
Open Loop Gain
VO= 1 to 3V
60
66
60
66
dB
Output Swing (Max. Output
≤
Ramp Peak - 100mV)
Minimum Total Range
0.3
3.5
0.3
3.5
V
CMRR
VCM = 1.5 to 5.5V
70
80
70
80
dB
PSRR
VIN = 8 to 30V
70
80
70
80
dB
Short Circuit Current
VCOMP = 0V
-4
-10
-4
-10
mA
Gain Bandwidth*
TJ = 25°C, AVOL = 0dB
1
2
1
2
MHz
Slew Rate*
TJ = 25°C, AVCL = 0dB
0.8
V/
s
PWM Section
Continuous Duty Cycle
Range* (other than zero)
Minimum Total Continuous Range,
Ramp Peak < 4.2V
495
4
95
%
50% Duty Cycle Clamp
RSENSE to VREF = 10k
42
47
52
42
47
52
%
Output Saturation
IOUT = 20mA
0.2
0.4
0.2
0.4
V
IOUT = 200mA
1.7
2.2
1.7
2.2
V
Output Leakage
VOUT = 40V
0.1
10
0.1
10
A
Comparator Delay*
Pin 8 to Pin 12, TJ = 25°C, RL = 1k
300
500
300
500
ns
Sequencing Functions
Comparator Thresholds
Pins 2, 3, 5
2.8
3.0
3.2
2.8
3.0
3.2
V
Input Bias Current
Pins 3, 5 = 0V
-1.0
-4.0
-1.0
-4.0
A
Input Leakage
Pins 3, 5 = 10V
0.1
2.0
0.1
2.0
A
Start/UV Hysteresis Current
Pin 2 = 2.5V
170
200
220
170
200
230
A
Ext. Stop Threshold
Pin 4
0.8
1.6
2.4
0.8
1.6
2.4
V
Error Latch Activate Current
Pin 4 = 0V, Pin 3 > 3V
-120
-200
-120
-200
A
Driver Bias Saturation Voltage,
VIN - VOH
IB = -50mA
2
3
2
3
V
Driver Bias Leakage
VB = 0V
-0.1
-10
-0.1
-10
A
Slow-Start Saturation
IS = 10mA
0.2
0.5
0.2
0.5
V
Slow-Start Leakage
VS = 4.5V
0.1
2.0
0.1
2.0
A
Current Control
Current Limit Offset
0
5
0
10
mV
Current Shutdown Offset
370
400
430
360
400
440
mV
Input Bias Current
Pin 7 = 0V
-2
-5
-2
-5
A
Common Mode Range*
-0.4
3.0
-0.4
3.0
V
Current Limit Delay*
TJ = 25°C, Pin 7 to 12, RL = 1k
200
400
200
400
ns
* These parameters are guaranteed by design but not 100% tested in production.
UC1841
UC2841
UC3841
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, these specifications apply for TA = -55°C to +125°C for the
UC1841, -25°C to +85°C for the UC2841, and 0°C to +70°C for the UC3841; VIN = 20V, RT = 20k
, CT = .001mfd, RR = 10k,
CR = .001mfd, Current Limit Threshold = 200mV, TA = TJ.
3
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