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AS1335 数据表(PDF) 4 Page - ams AG

部件名 AS1335
功能描述  1.5A, 1.5MHz, Synchronous DC/DC Step-Down Converter
PDF  18 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS1335 数据表(HTML) 4 Page - ams AG

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www.austriamicrosystems.com
Revision 1.02
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AS1335
Datasheet - E l e c t r i c a l C h a r a c t e r i s t i c s
6 Electrical Characteristics
VIN = EN = 3.6V, VOUT = VIN-0.5V, TAMB = -40°C to +85°C, typ. values @ TAMB = +25ºC (unless otherwise specified).
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN
Input Voltage Range
2.6
5.25
V
IQ
Quiescent Supply
Current
1
Normal Operation; VFB = 0.5V or VOUT =
90% of regulated output voltage,
ILOAD = 0 A
300
400
µA
IOUT
Output Current RMS
1.5
A
ISHDN
Shutdown Current
Shutdown Mode; VEN = 0V,
VIN = 4.2V
0.1
1
µA
Regulation
VOUT
Regulated Output
Voltage
fixed VOUT
0.975
1.0
1.025
V
adjustable VOUT
0.6
VIN -
0.5V
V
VFB
Regulated Feedback
Voltage
2,3
TAMB = +25°C
0.5880
0.6
0.6120
V
TAMB = -40°C to +85°C
0.5850
0.6
0.6150
IFB
Feedback Current
3
-30
+30
nA
ΔVLNR
Reference Voltage
Line Regulation
VIN = 2.6V to 5.25V
100
mV
ΔVLOADREG
Output Voltage
Load Regulation
ILOAD = 0A to 1.5A
100
mA
DC-DC Switches
IPK
Peak Inductor Current
VIN = 3V, VFB = 0.5V or VOUT = 90% of
regulated output voltage,
Duty Cycle < 35%
2.4
A
RPFET
P-Channel FET RDS(ON)
ILSW = 100mA
0.4
Ω
RNFET
N-Channel FET RDS(ON)
ILSW = -100mA
0.35
Ω
ILSW
SW Leakage
VEN = 0V, VSW = 0V or 5V,
VIN = 5V
-1
0.01
+1
µA
Enable
VIH
Logic Input Threshold
Input High
1.4
V
VIL
Input Low
0.4
IEN
EN Leakage Current
VIN = 3.6V, VEN = 0V to 3.6V
-1
0.01
+1
µA
Power-OK Output
VPOK
Power Good Low
Voltage Threshold
Rising
89.5
92
94.5
%
VOUT
Falling
85
88
91
Power Good High
Voltage Threshold
Rising
108.2
110.7
113.2
%
VOUT
Falling
104
107
110
tDELAY
POK Delay Time
150
215
275
ms
VOL
POK Output Voltage
Low
ISINK = 1mA, VFB = 0.7V
0.3
V



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