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VIPER50ASP-E Datasheet(PDF) 6 Page - STMicroelectronics

Part No. VIPER50ASP-E
Description  SMPS PRIMARY I.C.
Download  31 Pages
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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VIPER50ASP-E Datasheet(HTML) 6 Page - STMicroelectronics

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1 Electrical Data
VIPer50A-E/ASP-E
6/31
Table 5.
Error Amplifier Section
Table 6.
PWM Comparator Section
Table 7.
Shutdown and Overtemperature Section
Symbol
Parameter
Test Conditions‘
Min
Typ
Max
Unit
VDDREG
VDD Regulation Point
ICOMP = 0mA (see Figure 5)
12.6
13
13.4
V
∆VDDreg
Total Variation
TJ = 0 to 100°C
2
%
GBW
Unity Gain Bandwidth
From Input = VDD to
Output = VCOMP
COMP pin is open
(see Figure 15)
150
KHz
AVOL
Open Loop Voltage Gain
COMP pin is open
(see Figure 15)
45
52
dB
Gm
DC Transconductance
VCOMP=2.5V(see Figure 5)
1.1
1.5
1.9
mA/V
VCOMPLO
Output Low Level
ICOMP=-400µA; VDD=14V
0.2
V
VCOMPHI
Output High Level
ICOMP=400µA; VDD=12V
4.5
V
ICOMPLO
Output Low Current Capability VCOMP=2.5V; VDD=14V
-600
µA
ICOMPHI
Output High Current
Capability
VCOMP=2.5V; VDD=12V
600
µA
Symbol
Parameter
Test Conditions‘
Min
Typ
Max
Unit
HID
∆VCOMP / ∆IDPEAK
VCOMP = 1 to 3 V
1.4
2
2.6
V/A
VCOMPoff VCOMP Offset
IDPEAK = 10mA
0.5
V
IDpeak
Peak Current Limitation
VDD = 12V; COMP pin open
1.5
2
2.7
A
td
Current Sense Delay to Turn-
Off
ID = 0.5A
250
ns
tb
Blanking Time
250
360
ns
ton(min)
Minimum On Time
350
1200
ns
Symbol
Parameter
Test Conditions‘
Min
Typ
Max
Unit
VCOMPth
Restart Threshold
(see Figure 8)
0.5
V
tDISsu
Disable Set Up Time
(see Figure 8)
1.7
5
µs
Ttsd
Thermal Shutdown
Temperature
(see Figure 8)
140
170
°C
Thyst
Thermal Shutdown Hysteresis (see Figure 8)
40
°C


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