DPA422-426
Conditions
SOURCE = 0 V; TJ = -40 to 125 °C
See Figure 33
Parameter
Symbol
Min
Typ
Max
Units
(Unless Otherwise Specified)
Control Functions (cont.)
Softstart Time
tSOFT
TJ = 25 °C; DCMIN to DCMAX
TJ = 25 °C; IC = IC(SKIP) + IB)/2
5
7.2
-18
ms
PWM Gain
DCREG
-28
10
-22
%/mA
PWM Gain
Temperature Drift
See Note A
-0.01
%/mA/°C
Dynamic Impedance
ZC
TJ = 25 °C; IC = IC(SKIP) + IB)/2
15
22
W
Dynamic Impedance
Temperature Drift
0.18
%/°C
CONTROL Pin Internal
Filter Pole
30
kHz
mA
Shutdown/Auto-Restart
During Startup and Auto-Restart:
VC = 5.0 V; VD = 16 V & 40 V; TJ = 25 °C
-5.2
-4
-3
CONTROL Pin
Charging Current
IC(CH))
Average Current at the Beginning of
Softstart: VC = 5.0 V; VD = 16 V & 40 V;
TJ = 25 °C
-19
Charging Current
Temperature Drift
See Note A
-0.6
5.8
4.8
1
%/ °C
Auto-Restart Upper
Threshold Voltage
VC(AR)U
VC(AR)L
VC(AR)Hyst
DC(AR)
f(AR)
V
V
Auto-Restart Lower
Threshold Voltage
4.5
0.8
5.1
10
Auto-Restart
Hysteresis Voltage
V
Auto-Restart
Duty Cycle
CCONTROL = 22 µF; fOSC = 400 kHz;
%
Hz
VX = 0 V
Auto-Restart
Frequency
CCONTROL = 22 µF; fOSC = 400 kHz;
3.8
VX = 0 V
Line-Sense (L) and External Current Limit (X) Inputs
Threshold from Off to On
Threshold from On to Off
Hysteresis
48
44.5
2
50
47
52
Line Undervoltage
Threshold Current and
Hysteresis (L Pin)
IUV
TJ = 25 °C
TJ = 25 °C
TJ = 25 °C
49.5
µA
µA
µA
3
Threshold from On to Off
Threshold from Off to On
Hysteresis
135
131
4
149
-16
Line Overvoltage or
Remote ON/OFF
Threshold Current and
Hysteresis (L Pin)
IOV
117
-27
Threshold from On to Off
Threshold from Off to On
Hysteresis
-21.5
-25.5
4.5
Remote ON/OFF
Negative Threshold
Current and
IREM
Hysteresis (X Pin)
22
Rev. T 12/12
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