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AS1337 Arkusz danych(PDF) 5 Page - ams AG

Numer części AS1337
Szczegółowy opis  200mA, DC-DC Step-Up Converter with Buck Mode
PDF  16 Pages
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Producent  AMSCO [ams AG]
Strona internetowa  http://www.ams.com
Logo AMSCO - ams AG

AS1337 Arkusz danych(HTML) 5 Page - ams AG

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www.austriamicrosystems.com/DC-DC_Step-Up/AS1337
Revision 1.05
4 - 15
AS1337
Datasheet - Electrical Character i s t ics
6 Electrical Characteristics
VIN = VEN = +1.2V, VOUT = +3.3V, Typ values @ TAMB = +25ºC (unless otherwise specified);
Table 4. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
TAMB
Operating Temperature Range
-45
+85
°C
Input
Minimum Start-Up Voltage
ILOAD = 1mA
0.85
1.15
V
Minimum Operating Voltage
EN = VIN
1
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 dis-
charged state.
0.65
0.85
V
VIN
Maximum Input Voltage
4.5
V
Output Voltage Adjust Range
2.5
5
V
Regulation
VFB
Feedback Voltage
1.192
1.23
1.268
V
IFB
Feedback Input Current
VFB = 1.25V
1
nA
Operating Current
IQPWS
Quiescent Current
VFB = 1.4V
2
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.
20
35
µA
ISHDN
Shutdown Current
EN = GND, VIN = 3.3V
0.01
1
µA
Switches
INMOSSWL NMOS Switch Leakage
0.01
1
µA
IPMOSSWL PMOS Switch Leakage
AS1337B only
0.01
1
µA
RONNMOS NMOS Switch On Resistance
VOUT = 3.3V
0.35
Ω
VOUT = 5V
0.20
RONPMOS PMOS Switch On Resistance
VOUT = 3.3V
0.45
Ω
VOUT = 5V
0.30
INMOS
NMOS Current Limit
850
mA
Max Duty Cycle
VFB = 1V
80
87
%
fSW
Switching Frequency
0.95
1.2
1.5
MHz
Shutdown
VIH
Enable Input Threshold
1
V
VIL
0.3
IEN
EN Input Current
EN = 5.0V
0.01
1
µA
Power-OK
POK Voltage Low
IPOK=1mA
0.1
0.4
V
POK Leakage Current
VPOK = VIN or VOUT
1
100
nA
Power-OK Threshold
Falling Edge
86
88
91
%
Thermal Protection
TENM
Overtemperature Protection
145
ºC
ΔTENM
Overtemperature Protection Hysteresis
10
ºC



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