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VIPER50BSP 数据表(PDF) 5 Page - STMicroelectronics

部件名 VIPER50BSP
功能描述  SMPS PRIMARY I.C.
PDF  20 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

VIPER50BSP 数据表(HTML) 5 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS (continued)
OSCILLATOR SECTION
Symb ol
Parameter
T est Con ditio ns
Mi n.
Typ .
Max.
Un it
FSW
Oscillator F requency
Total Variation
RT = 8.2 K
Ω
CT =2.4 nF
VDD = 9 to15 V
with RT
± 1%
CT
± 5%
(see fig. 6 and fig.9)
90
100
110
KHz
VOSCih
Oscillator Peak Volt age
7.1
V
VOSCil
Oscillator Valley Voltage
3.7
V
ERROR AMPLIFIER SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
VDDreg
VDD Regulat ion Point
ICOMP = 0 mA
(see f ig.1)
12. 6
13
13.4
V
∆VDDreg
Total Variation
TJ = 0 to 100
oC2
%
GBW
Unity Gain Bandwidt h
From Input = VDD t o O utput = VCOMP
CO MP pin is open (see fig. 10)
150
KHz
AVOL
Open Loop Voltage
Gain
CO MP pin is open (see fig. 10)
45
52
dB
Gm
DC T ransconduct ance
VCOMP = 2.5 V
(see f ig. 1)
1. 1
1.5
1.9
mA/V
VCOMPL O
Output Low Level
ICOMP =-400
µAVDD =14 V
0.2
V
VCOMPHI
Output High Level
ICOMP = 400
µAVDD =12 V
4.5
V
ICOMPLO
Output Low Current
Capability
VCOMP =2.5 V
VDD = 14 V
-600
µA
ICOMPHI
Output High Current
Capability
VCOMP =2.5 V
VDD = 12 V
600
µA
PWM COMPARATOR SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
HID
∆VCOMP/∆IDpeak
VCOMP = 1 to 3 V
0. 7
1
1.3
V/A
VCOMPoff
VCOMP off set
IDp eak =10 mA
0.5
V
IDpeak
Peak Current Limitat ion VDD = 12V
COMP pinopen
3
4
5.4
A
td
Current Sense Delay
to turn-off
ID = 0.5 A
250
ns
tb
Blanking Time
250
360
ns
ton(min)
Minimum on T ime
350
ns
SHUTDOWN AND OVERTEMPERATURE SECTION
Symb ol
Parameter
Test Cond ition s
Mi n.
Typ .
Max.
Un it
VCOMPth
Restart threshold
(see f ig. 4)
0.5
V
tDISsu
Disable Set Up Time
(see f ig. 4)
1.7
5
µs
Ttsd
Thermal Shutdown
Temperat ure
(see f ig. 8)
140
170
oC
Thyst
Thermal Shutdown
Hysteresis
(see f ig. 8)
40
oC
VIPER50B/BSP
5/20



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