APW7137
Electrical Characteristics
Refer to the typical application circuits. These specifications apply over VIN = 3.6V, IOUT = 0mA, TA = -40°C to 85°C, unless
otherwise noted. Typical values are at TA = 25°C.
APW7137
Symbol
Parameter
Test Conditions
Unit
Min.
Typ.
Max.
SUPPLY VOLTAGE AND CURRENT
VIN
IDD
ISD
Input Voltage Range
Input DC Bias Current
TA = -40 ~ 85°C, TJ = -40 ~ 125°C
VFB = 1.0V, switching
EN = GND
2.5
-
1
6
2
1
V
-
-
mA
mA
0.1
UNDER-VOLTAGE LOCKOUT
UVLO Threshold Voltage
VIN Rising
2.0
50
2.2
2.4
V
UVLO Hysteresis Voltage
100
150
mV
REFERENCE AND OUTPUT VOLTAGES
TA = 25°C
1.212
1.205
-50
1.23
1.248
1.255
50
VREF
Regulated Feedback Voltage
V
TA = -40 ~ 85°C
-
-
IFB
FB Input Current
nA
INTERNAL POWER SWITCH
FSW
RON
ILIM
Switching Frequency
VFB=1.1V
0.8
-
1.0
0.6
1.3
-
1.2
-
MHz
W
Power Switch On Resistance
Power Switch Current Limit
LX Leakage Current
1
1.6
1
A
VEN=0V, VLX=0V or 5V, VIN = 5V
-1
92
mA
%
DMAX
LX Maximum Duty Cycle
95
98
SOFT-START AND SHUTDOWN
TSS
Soft-Start Duration (Note 4)
EN Voltage Threshold
EN Voltage Hysteresis
EN Leakage Current
-
0.4
-
2
3
1
-
ms
V
VTEN
VEN Rising
0.7
0.1
±0.5
V
ILEN
VEN=5V, VIN = 5V
TJ Rising
-1
1
mA
OVER-TEMPERATURE PROTECTION
TOTP
Over-Temperature Protection (Note 4)
-
-
150
40
-
-
°C
°C
Over-Temperature Protection
Hysteresis (Note 4)
Note 4: Guaranteed by design, not production tested.
Copyright ã ANPEC Electronics Corp.
3
www.anpec.com.tw
Rev. A.4 - Oct., 2008
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
