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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： | 7/14页 |
| 文件大小： | 1121K |
| 代理商： | 5962-8992002VA |
PARAMETER
TEST CONDITIONS
UC1841 / UC2841
UC3841
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
Power Inputs
Start-Up Current
VIN = 30V, Pin 2 = 2.5V
4.5
6
4.5
6
mA
Operating Current
VIN = 30V, Pin 2 = 3.5V
10
14
10
14
mA
Supply OV Clamp
IIN = 20mA
33
40
45
33
40
45
V
Reference Section
Reference Voltage
TJ = 25°C
4.95
5.0
5.05
4.9
5.0
5.1
V
Line Regulation
VIN = 8 to 30V
10
15
10
20
mV
Load Regulation
IL = 0 to 10mA
1020
1030
mV
Temperature Stability
Over Operating Temperature Range
4.9
5.1
4.85
5.15
V
Short Circuit Current
VREF = 0, TJ = 25°C
-80
-100
-80
-100
mA
Oscillator
Nominal Frequency
TJ = 25°C
47
50
53
45
50
55
kHz
Voltage Stability
VIN = 8 to 30V
0.5
1
0.5
1
%
Temperature Stability
Over Operating Temperature Range
45
55
43
57
kHz
Maximum Frequency
RT = 2k
, CT = 330pF
500
kHz
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.
Supply Voltage, +VIN (Pin 15) (Note 2)
Voltage Driven . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +32V
Current Driven, 100mA maximum . . . . . . . . . . . . Self-limiting
PWM Output Voltage (Pin 12) . . . . . . . . . . . . . . . . . . . . . . . 40V
PWM Output Current, Steady-State (Pin 12) . . . . . . . . . 400mA
PWM Output Peak Energy Discharge . . . . . . . . . . . . 20
Joules
Driver Bias Current (Pin 14) . . . . . . . . . . . . . . . . . . . . . -200mA
Reference Output Current (Pin 16) . . . . . . . . . . . . . . . . -50mA
Slow-Start Sink Current (Pin 8) . . . . . . . . . . . . . . . . . . . . 20mA
VIN Sense Current (Pin 11). . . . . . . . . . . . . . . . . . . . . . . . 10mA
Current Limit Inputs (Pins 6 & 7) . . . . . . . . . . . . . -0.5 to +5.5V
Stop Input (Pin 4) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +5.5V
Comparator Inputs
(Pins 1, 7, 9-11, 16) . . . . . . . . . . . . Internally clamped at 12V
Power Dissipation at TA = 25°C (Note 3) . . . . . . . . . . . 1000mW
Power Dissipation at TC = 25°C (Note 3) . . . . . . . . . . . 2000mW
Operating Junction Temperature . . . . . . . . . . -55°C to +150°C
Storage Temperature Range. . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300°C
Note 1: All voltages are with respect to ground, Pin 13.
Currents are positive-into, negative-out of the specified
terminal.
Note 2: All pin numbers are referenced to DIL-18 package.
Note 3: Consult Packaging Section of Databook for thermal
limitations and considerations of package.
CONNECTION DIAGRAMS
PLCC-20, LCC-20
(TOP VIEW)
Q or L Package
DIL-18, SOIC-18 (TOP VIEW)
J or N, DW Package
PACKAGE PIN FUNCTIONS
FUNCTION
PIN
Comp
1
Start/UV
2
OV Sense
3
Stop
4
Reset
5
CUR Thresh
7
CUR Sense
8
Slow Start
9
RT/CT
10
Ramp
11
VIN Sense
12
PWM Out
13
Ground
14
Drive Bias
15
+VIN Supply
17
5.0V REF
18
Inv. Input
19
N.I. Input
20
ABSOLUTE MAXIMUM RATINGS
2
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