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UC1525AL883B Scheda tecnica(PDF) 5 Page - Texas Instruments

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Il numero della parte UC1525AL883B
Spiegazioni elettronici  REGULATING PULSE WIDTH MODULATORS
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Produttore elettronici  TI1 [Texas Instruments]
Homepage  http://www.ti.com
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UC1525AL883B Scheda tecnica(HTML) 5 Page - Texas Instruments

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+VIN
15
Q3
Q4
Q2
Q1
1
2
Inv Input
NI Input
200 mA
100 mA
5.8 V
100 W
Comp
9
to PWM
Comparator
UC1525A, UC1527A
UC2525A, UC2527A
UC3525A, UC3527A
SLUS191C – FEBRUARY 1997 – REVISED JANUARY 2008
ELECTRICAL CHARACTERISTICS (continued)
+VIN = 20 V, and over operating temperature, unless otherwise specified, TA = TJ
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
PWM COMPARATOR
Minimum duty-cycle
0%
Maximum duty-cycle
45%
49%
Zero duty-cycle
0.7
0.9
Input threshold(4)
V
Maximum duty-cycle
3.3
3.6
Input bias current(4)
0.05
1.0
µA
SHUTDOWN
Soft-start current
VSD = 0 V, VSS = 0 V
25
50
80
µA
Soft-start low level
VSD = 2.5 V
0.4
0.7
V
Shutdown threshold
To outputs, VSS = 5.1 V, TJ = 25°C
0.6
0.8
1.0
Shutdown input current
VSD = 2.5 V
0.4
1.0
mA
Shutdown Delay(5)
VSD = 2.5 V, TJ = 25°C
0.2
0.5
µs
OUTPUT DRIVERS (each output) (VC = 20 V)
ISINK = 20 mA
0.2
0.4
Low-level output voltage
ISINK = 100 mA
1.0
2.0
ISOURCE = 20 mA
18
19
V
High-level output voltage
ISOURCE = 100 mA
17
18
Undervoltage lockout
VCOMP and VSS = High
6
7
8
VC OFF Current
(6)
VC = 35 V
200
µA
Rise Time(5)
CL = 1 nF, TJ = 25°C
100
600
ns
Fall Time(5)
CL = 1 nF, TJ = 25°C
50
300
TOTAL STANDBY CURRENT
Supply Current
VIN = 35 V
14
20
mA
(4)
Tested at fOSC = 40 kHz (RT = 3.6 kΩ, CT = 0.01 µF, RD = 0 Ω.
(5)
These parameters, although ensured over the recommended operating conditions, are not 100% tested in production.
(6)
Collector off-state quiescent current measured at pin 13 with outputs low for UC1525A and high for UC1527A.
UC1525A Error Amplifier
Copyright © 1997–2008, Texas Instruments Incorporated
Submit Documentation Feedback
5
Product Folder Link(s): UC1525A, UC1527A UC2525A, UC2527A UC3525A, UC3527A


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