AS1337
Datasheet - Electrical Characteristics
6 Electrical Characteristics
VIN = VEN = +1.2V, VOUT = +3.3V, Typ values @ TAMB = +25ºC, TAMB = -40 to +85ºC (unless otherwise specified);
Table 4. Electrical Characteristics
Symbol
Input
Parameter
Conditions
Min
Typ
Max
Units
Minimum Start-Up Voltage
Minimum Operating Voltage
ILOAD = 1mA
0.85
0.65
1.15
0.85
V
V
1
EN = VIN
Maximum Input Voltage
VIN
4.5
5
V
V
Output Voltage Adjust Range
2.5
Regulation
VFB
Feedback Voltage
1.192
1.23
1
1.268
V
Feedback Input Current
VFB = 1.25V
IFB
nA
Operating Current
VFB = 1.4V 2
Quiescent Current
IQPWS
20
35
1
µA
µA
Shutdown Current
EN = GND, VIN = 3.3V
ISHDN
0.01
Switches
INMOSSWL
IPMOSSWL
NMOS Switch Leakage
PMOS Switch Leakage
0.01
0.01
0.35
0.20
0.45
0.30
850
87
1
1
µA
µA
AS1337B only
VOUT = 3.3V
VOUT = 5V
NMOS Switch On Resistance
PMOS Switch On Resistance
RONNMOS
Ω
Ω
VOUT = 3.3V
VOUT = 5V
RONPMOS
INMOS
NMOS Current Limit
Max Duty Cycle
mA
%
VFB = 1V
80
Switching Frequency
fSW
Shutdown
VIH
0.95
1.2
1.5
MHz
1
Enable Input Threshold
EN Input Current
V
VIL
0.3
1
EN = 5.0V
IEN
0.01
µA
Power-OK
POK Voltage Low
IPOK=1mA
0.1
1
0.4
100
91
V
nA
%
POK Leakage Current
Power-OK Threshold
VPOK = VIN or VOUT
Falling Edge
86
88
Thermal Protection
TENM
Overtemperature Protection
145
10
ºC
ºC
Overtemperature Protection
Hysteresis
ΔTENM
1. Minimum VIN operation after start-up is only limited by the battery’s ability to provide the necessary power as it
enters a deeply discharged state.
2. IQPWS is measured at VOUT. Multiply this value by VOUT/VIN to get the equivalent input (battery) current.
Note: All limits are guaranteed. The parameters with min and max values are guaranteed with production tests or
SQC (Statistical Quality Control) methods.
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