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UC1845A-SP Folha de dados(PDF) 6 Page - Texas Instruments

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Nome de Peças UC1845A-SP
Descrição Electrónicos  QML Class V, Radiation Hardened Current-Mode PWM Controller
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Fabricante Electrônico  TI1 [Texas Instruments]
Página de início  http://www.ti.com
Logo TI1 - Texas Instruments

UC1845A-SP Folha de dados(HTML) 6 Page - Texas Instruments

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Output Current, Source or Sink (A)
.01
.02 .03 .04 .05 .07 .1
.2
.3 .4 .5
.7 1.0
I
UC1845A-SP
SLUSC14 – MAY 2015
www.ti.com
Electrical Characteristics (continued)
VCC = 15 V
(1), R
T = 10 kΩ, CT = 3.3 nF, TA = TJ = –55°C to 125°C (unless otherwise noted)
(2)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ISINK = 20 mA
0.1
0.4
V
Output low-level voltage
ISINK = 200 mA
1.5
2.2
V
ISOURCE = –20 mA
13
13.5
V
Output high-level voltage
ISOURCE = –200 mA
12
13.5
V
Rise time
CL = 1 nF, TJ = 25°C
(3)
50
150
ns
Fall time
CL = 1 nF, TJ = 25°C
(3)
50
150
ns
UVLO saturation
VCC = 5 V, ISINK = 10 mA
0.7
1.2
V
UNDERVOLTAGE LOCKOUT
Start threshold
7.8
8.4
9
V
Minimum operation voltage after turn-on
7
7.6
8.2
V
PWM
Maximum duty cycle
47%
48%
50%
Minimum duty cycle
0%
TOTAL STANDBY CURRENT
Start-up current
0.3
0.5
mA
Operating supply current
VFB = VISENSE = 0 V
11
17
mA
VCC Zener voltage
ICC = 25 mA
30
34
V
8.6 Typical Characteristics
Figure 1. Output Saturation Characteristics
6
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