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UC2847N Fiches technique(PDF) 2 Page - Texas Instruments

No de pièce UC2847N
Description  Current Mode PWM Controller
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2847N Fiches technique(HTML) 2 Page - Texas Instruments

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UC1846/7
UC2846/7
UC3846/7
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
1
C/L SS
2
VREF
3
C/S-
4
C/S+
5
N/C
6
E/A+
7
E/A-
8
Comp
9
CT
10
N/C
11
RT
12
Sync
13
A Out
14
Gnd
15
N/C
16
VC
17
B Out
18
VIN
19
Shutdown
20
DIL-16, SOIC-16
(TOP VIEW)
J or N Package, DW Package
CONNECTION DIAGRAMS
ELECTRICAL CHARACTERISTICS (Unless otherwise stated, these specifications apply for TA=-55°C to +125°C for
UC1846/7; -40°C to +85°C for the UC2846/7; and 0°C to +70°C for the UC3846/7;
VIN=15V, RT=10k, CT=4.7nF, TA=TJ.)
UC1846/UC1847
UC3846/UC3847
PARAMETER
TEST CONDITIONS
UC2846/UC2847
MIN.
TYP.
MAX.
MIN.
TYP.
MAX. UNITS
Reference Section
Output Voltage
TJ=25°C, IO=1mA
5.05
5.10
5.15
5.00
5.10
5.20
V
Line Regulation
VIN=8V to 40V
5
20
5
20
mV
Load Regulation
IL=1mA to 10mA
3
15
3
15
mV
Temperature Stability
Over Operating Range, (Note 2)
0.4
0.4
mV/°C
Total Output Variation
Line, Load, and Temperature (Note 2)
5.00
5.20
4.95
5.25
V
Output Noise Voltage
10Hz
≤ f ≤10kHz, TJ=25°C (Note 2)
100
100
µV
Long Term Stability
TJ=125°C, 1000 Hrs. (Note 2)
5
5
mV
Short Circuit Output Current VREF=0V
-10
-45
-10
-45
mA
Supply Voltage (Pin 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V
Collector Supply Voltage (Pin 13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +40V
Output Current, Source or Sink (Pins 11, 14) . . . . . . . . . . . . . . . . . . . . . . . 500mA
Analog Inputs (Pins 3, 4, 5, 6, 16). . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3V to +VIN
Reference Output Current (Pin 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -30mA
Sync Output Current (Pin 10). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA
Error Amplifier Output Current (Pin 7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -5mA
Soft Start Sink Current (Pin 1). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Oscillator Charging Current (Pin 9) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5mA
Power Dissipation at TA=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000mW
Power Dissipation at TC=25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000mW
Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C
Lead Temperature (soldering, 10 seconds) . . . . . . . . . . . . . . . . . . . . . . . . +300°C
ABSOLUTE MAXIMUM RATINGS (Note 1)
Note 1. All voltages are with respect to Ground, Pin 13. Currents are positive into,
negative out of the speficied terminal. Consult Packaging Section of Databook for
thermal limitations and considerations of packages. Pin numbers refer to DIL and
SOIC packages only.
PLCC-20, LCC-20
(TOP VIEW)
Q, L Packages


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