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UC2860Q Fiches technique(PDF) 3 Page - Texas Instruments

No de pièce UC2860Q
Description  Resonant Mode Power Supply Controller
Download  10 Pages
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Fabricant  TI [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI - Texas Instruments

UC2860Q Fiches technique(HTML) 3 Page - Texas Instruments

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UC1860
UC2860
UC3860
ELECTRICAL CHARACTERISTICS:
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Oscillator Section (cont’d)
Trig in Threshold
1.0
1.4
1.8
V
Trig in Open Circuit Voltage
0.7
0.9
1.1
V
Trig in Delta (VTH-VOC)
0.3
0.5
0.7
V
Trig in Input Resistance
dV TRIG = VOC to VTH
512
25
k
Minimum Trig in Pulse Width*
3
10
ns
Osc. Disable Threshold
1.0
1.4
1.8
V
One Shot Timer
On Time*
150
200
250
ns
Clamp Frequency*
IVFO = 1.5mA
2.8
3.7
4.6
MHz
Dead Time*
IVFO =1.5mA
35
70
100
ns
Output Stage
Output Low Saturation
20mA
0.2
0.4
V
200mA
0.5
2.2
V
Output High Saturation
-20mA
1.5
2.0
V
-200mA
1.7
2.5
V
Rise/Fall Time*
CLOAD = 1nF
1530ns
UVLO Low Saturation
20mA
0.8
1.5
V
Output Mode Low Input
0.4
V
Output Mode High Input
2.0
V
Under Voltage Lockout Section
VCC Comparator Threshold
On
16
17.3
18.5
V
Off
9.5
10.5
12
V
UVLO Comparator Threshold
On
3.6
4.2
4.8
V
Hysteresis
0.2
0.4
0.6
V
UVLO Input Resistance
UVLO = 4/VCC = 8
102350
k
VREF Comparator Threshold
VCC = UVLO = VREF
4.5
4.9
V
Supply Current
ICC
VCC = 12V, VOSC DSBL = 3V
30
40
mA
ISTART
UVLO pin open
VCC = VCC (on) -0.3V
0.3
0.5
mA
Fault Comparator
Input Offset Voltage
−0.3 ≤ VCM ≤ 3V
2
10
mV
Input Bias Current
VCM = 0V
100
200
µA
Input Offset Current
VCM = 0V
10
30
µA
Propagation Delay To Output*
±50mV input
100
150
ns
Uncommitted Comparator
Input Offset Voltage
-0.3
≤ VCM ≤ 3V
2
10
mV
Input Bias Current
VCM = 0V
100
200
µA
Input Offset Current
VCM = 0V
10
30
µA
Output Low Voltage
IO = 2mA
0.3
0.5
V
Propagation Delay To Sat*
±50mV input, 2.5k load to 5V
50
100
ns
Soft Start/Restart Control Section
Saturation Voltage (2 pins)
ISINK = 100
µA0.2
0.5
V
Charge Current (2 pins)
2
5
10
µA
Restart Delay Threshold
2.8
3.0
3.2
V
*Guaranteed by design but not 100% tested.
Unless otherwise stated, all specifications apply for -55°C
≤ TA ≤ 125°C for the
UC1860, -25°
≤ TA ≤ 85°C for the UC2860, 0 ≤ TA ≤ 70°C for the UC3860, VCC =
12V, CVFO = 330pF, IVFO = 0.5mA, C = 330pF, and R = 2.7k, TA = TJ.
3


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