APW7142
Electrical Characteristics (Cont.)
Refer to the typical application circuits. These specifications apply over V
IN
=12V, V
OUT
=3.3V and T
A
= -40 ~ 85°C, unless otherwise
specified. Typical values are at T
A
=25°C.
Symbol
Parameter
Test Conditions
Min.
CURRENT-MODE PWM CONVERTER (CONT.)
Current-Sense to COMP Voltage
Transresistance
High-side Switch Resistance
Low-side Switch Resistance
PROTECTIONS
I
LIM
V
TH_UV
V
TH_OV
High-Side Switch Current-Limit
FB Under-Voltage Threshold
FB Over-Voltage Threshold
FB Under-Voltage Debounce
T
OTP
Over-Temperature Trip Point
Over-Temperature Hysteresis
T
D
Dead-Time
V
LX
= -0.7V
Peak Current
V
FB
falling
V
FB
rising
4.0
45
118
-
-
-
-
5.5
50
123
1
150
40
20
7.0
55
128
-
-
-
-
A
%
%
µs
o
o
APW7142
Typ.
Max.
Unit
-
V
IN
= 5V, T
J
=25°C
V
IN
= 12V, T
J
=25°C
V
IN
= 5V, T
J
=25°C
V
IN
= 12V, T
J
=25°C
-
-
-
-
0.048
90
70
90
70
-
110
90
110
90
V/A
mΩ
mΩ
C
C
ns
SOFT-START, SOFT-STOP, ENABLE AND INPUT CURRENTS
T
SS
Soft-Start / Soft-Stop Interval
EN Shutdown Voltage Threshold
EN Enable Voltage Threshold
High-Side Switch Leakage Current
I
FB
I
EN
FB Pin Input Current
EN Pin Input Current
V
EN
= 0V ~ V
IN
V
EN
= 0V, V
LX
= 0V
V
EN
falling
1.5
0.5
-
-
-100
-100
2
-
-
-
-
-
2.5
-
2.1
2
+100
+100
ms
V
V
µA
nA
nA
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Mar., 2009
4
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
