DPA422-426
Conditions
SOURCE = 0 V; TJ = -40 to 125 °C
See Figure 33
Parameter
Symbol
Min
Typ
Max
Units
(Unless Otherwise Specified)
Line-Sense (L) and External Current Limit (X) Inputs (cont.)
VL = VC
175
-230
-270
-105
2.05
2.1
240
-170
-230
-85
380
LINE-SENSE Pin
IL(SC)
µA
µA
Short-Circuit Current
VL = 0 V
Normal Mode
-185
-65
2.6
X Pin Short-Circuit
Current
IX(SC)
VX = 0 V
Remote OFF Using L Pin
IL = IUV
2.35
2.5
Line Pin Voltage
(Positive Current)
VL
IL = IOV
2.9
V
IX = -50 µA
1.35
1.25
X Pin Voltage
(Negative Current)
VX
IX = -150 µA
Maximum Duty Cycle
Reduction Onset
IL(DC)
TJ = 25 °C
55
µA
Threshold Current
VL = Floating
VL = VC
0.6
0.9
1.1
1.5
Remote OFF DRAIN
Supply Current
VD = 40 V
VX = 0 V
ID(RMT)
mA
LINE-SENSE Pin
Voltage Turn-On
Threshold in
VL(TH)
0.6
1
1.4
V
Synchronous Mode
fOSC = 400 kHz
fOSC = 300 kHz
120
120
2250
3080
On-Time Pulse Width
for Synchronization
tON(SYNC)
ns
Off-Time Pulse Width
for Synchronization
tOFF(SYNC)
0.25
7.7
µs
Synchronous
Turn-On Delay
tDELAY(SYNC)
From Synchronous On to Drain Turn-On
250
ns
Frequency (F) Input
FREQUENCY Pin
Threshold Voltage
VF
IF
1.1
4
V
VF = 0 V
VF = VC
-0.38
17
FREQUENCY Pin Input
Current
µA
µs
120
2
FREQUENCY Pin
Delay Time
tDELAY(VF)
Circuit Protection
DPA422 di/dt = 225 mA/µs
DPA423 di/dt = 300 mA/µs
0.86
1.16
2.32
4.65
6.50
0.935
1.25
2.50
5.00
7.00
1.0
1.34
2.68
5.35
7.50
Self Protection
Current Limit
(See Note B)
ILIMIT
TJ = 25 °C
DPA424 di/dt = 600 mA/µs
DPA425 di/dt = 1.25 A/µs
DPA426 di/dt = 1.75 A/µs
A
23
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Rev. T 12/12
POWERINT [ Power Integrations ]
