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UC28023N Fiches technique(PDF) 4 Page - Texas Instruments

No de pièce UC28023N
Description  ECONOMY HIGH-SPEED PWM CONTROLLER
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC28023N Fiches technique(HTML) 4 Page - Texas Instruments

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UC28023
UC28025
SLUS557B − MARCH 2003 − REVISED APRIL 2004
4
www.ti.com
ELECTRICAL CHARACTERISTICS
TA = −40°C to 105°C , TJ = TA, RT = 3.65 kΩ, CT = 1 nF, VCC = 15 V (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
SOFT-START
ICHG
Charge current
VSS = 0.5 V
3
9
20
µA
IDISCHG
Discharge current
VSS = 1.0 V
1.0
7.5
mA
CURRENT LIMIT/SHUTDOWN
ILIMIT
Current limit bias current
0 V < V(ILIM/SD) < 4 V
±10
µA
ILIMIT
Offset voltage
UC28023
15
mV
ILIMREF
Common mode range(1)
UC28023
1.00
1.25
Current limit threshold voltage
UC28025
0.9
1.0
1.1
V
Shutdown threshold voltage
1.25
1.40
1.55
V
tDELAY
Delay to output time(1)
50
80
ns
OUTPUT
VOL
Low-level output voltage
IOUT = 20 mA
0.25
0.40
VOL
Low-level output voltage
IOUT = 200 mA
1.2
2.2
V
VOH
High-level output voltage
IOUT = −20 mA
13.0
13.5
V
VOH
High-level output voltage
IOUT = −200 mA
12
13
Collector leakage
VC = 30 V
100
500
µA
Rise time / Fall time(1)
CLOAD = 1 nF
30
60
ns
UNDERVOLTAGE LOCKOUT (UVLO)
Start threshold voltage
8.8
9.2
9.6
V
Hysteresis
0.4
0.8
1.2
V
SUPPLY CURRENT
Start-up current
VCC = 8 V
1.1
2.0
mA
ICC
Operating current
VINV = VRAMP = VILIM = 0 V
VINV = 1 V
25
35
mA
(1) Ensured by design. Not production tested.
THERMAL RESISTANCE
PACKAGE
θJA (°C/W)
θJC (°C/W)
N(2)
90(2)
45
DW(2)
50−100(2)
27
(2) Specified θJA (junction-to-ambient) is for devices mountied to 5-square-inch FR4 PC board with one ounce copper
where noted. When resistance range is given, lower values are for 5-square-inch aluminum PC board. Test PWB is 0.062
inches thick and typically uses 0.635 mm trace width for power packages and 1.3 mm trace widths for non-power
packages with a 100x100 mil probe land area at the end of each trace.


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