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UC1848 Datasheet(PDF) 2 Page - Texas Instruments

Part No. UC1848
Description  Average Current Mode PWM Controller
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Maker  TI [Texas Instruments]
Homepage  http://www.ti.com
Logo TI - Texas Instruments

UC1848 Datasheet(HTML) 2 Page - Texas Instruments

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UC1848
UC2848
UC3848
Supply Voltage (Pin 15) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22V
Output Current, Source or Sink (Pin 14)
DC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5A
Pulse (0.5 s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.2A
Power Ground to Ground (Pin 1 to Pin 13) . . . . . . . . . . .
± 0.2V
Analog Input Voltages
(Pins 3, 4, 7, 8, 12, 16) . . . . . . . . . . . . . . . . . . . . . –0.3 to 7V
Analog Input Currents, Source or Sink
(Pins 3, 4, 7, 8, 11, 12, 16) . . . . . . . . . . . . . . . . . . . . . . 1mA
Analog Output Currents, Source or Sink (Pins 5 & 10) . . . 5mA
Power Dissipation at TA = 60°C . . . . . . . . . . . . . . . . . . . . . . 1W
Storage Temperature Range
. . . . . . . . . . . . . . . −65°C to +150°C
Lead Temperature (Soldering 10 seconds) . . . . . . . . . . +300
°C
Notes: All voltages are with respect to ground (DIL and SOIC
Pin 1). Currents are positive into the specified terminal. Pin
numbers refer to the 16 pin DIL and SOIC packages. Consult
Packaging Section of Databook for thermal
limitations and
considerations of packages.
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS: Unless otherwise stated, all specifications are over the junction temperature range
of
−55°C to +125°C for the UC1848, −40°C to +85°C for the UC2848, and 0°C to +70°C for the UC3848. Test conditions are: VCC
= 12V, CT = 400pF, CI = 100pF, IOFF = 100
µA, CDC = 100nF, Cvs = 100pF, and Ivs = 400µA, TA = TJ.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNITS
Real Time Current Waveform Synthesizer
Ion Amplifier
Offset Voltage
0.95
1
1.05
V
Slew Rate (Note 1)
20
25
V/
µs
lib
-2
-20
µA
IOFF Current Mirror
Input Voltage
0.95
1
1.05
V
Current Gain
0.9
1
1.1
A/A
Current Error Amplifier
AVOL
60
100
dB
Vio
12V
≤ VCC
20V, 0V
VCM
5V
10
mV
lib
-0.5
-3
µA
Voh
IO =
−200µA
3
3.3
V
Vol
IO = 200
µA
0.3
0.6
V
Source Current
VO = 1V
1.4
1.6
2.0
mA
GBW Product
f = 200kHz
5
8
MHz
Slew Rate (Note 1)
810
V/
µs
PACKAGE PIN FUNCTION
FUNCTION
PIN
N/C
1
GND
2
VREF
3
NI
4
INV
5
N/C
6
CAO
7
CT
8
VS
9
DMAX
10
N/C
11
CDC
12
CI
13
IOFF
14
ION
15
N/C
16
PGND
17
OUT
18
VCC
19
UV
20
PLCC-20 & LCC-20
(Top View)
Q & L Packages
CONNECTION DIAGRAMS
DIL-16, SOIC-16 (Top View)
J, N, or DW Packages


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