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AS7620 Arkusz danych(PDF) 4 Page - ams AG

Numer części AS7620
Szczegółowy opis  500mA Hysteretic High Voltage Step-Down Converter with Dual Power Monitor
PDF  16 Pages
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Producent  AMSCO [ams AG]
Strona internetowa  http://www.ams.com
Logo AMSCO - ams AG

AS7620 Arkusz danych(HTML) 4 Page - ams AG

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www.austriamicrosystems.com
Revision 1.13
4 - 16
AS7620
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
TJ = -40 to +125ºC, VOUT=3.3V, LX=10µH, CX=100µF (unless otherwise specified). Typ. values at VIN= +24V and
TAMB= +25ºC.
Table 3. Electrical Characteristics
Symbol
Parameter
Conditions
Min
Typ
Max
Units
VIN
Input Voltage Range
3.6
24
32
V
VCC
VEPF, ILIM
-0.3
3.6
V
VST
Start-up Voltage
3.3
V
VOUT
Output Voltage
AS7620-A
1.19
VIN
V
AS7620-B
Initial, at 25ºC amb.
3.267
3.300
3.333
V
Over line, load and temperature
3.218
3.383
VFB
Feedback voltage
AS7620-A
Initial, at 25ºC amb.
1.178
1.190
1.202
V
Over line and temperature
1.166
1.214
V
AS7620-B
3.218
3.300
3.383
VHYS
Controller
Hysteresis
AS7620-A
At FB node
815
30
mV
AS7620-B
22
42
82
VEPF
Early Power Fail Threshold
at VEPF
1.19
V
VPG
Power Good Threshold
of VFB at FB pin
91
93
95
%
Line Regulation
VIN=8V to 24V, RL=200Ω
0.1
% / V
Load Regulation
10% to 90% load change
0.9
%
IFB
Input Bias
Current
AS7620-A
FB pin
200
nA
AS7620-B
3
5
µA
IOUT
Output Current
ILIM/2
mA
ILIM
Switch Current Limit
ILIM=0V
1
1. LX=100µH, CX=10µF, Initial accuracy only. For temperature variation, please refer to performance graphs.
192
240
288
mA
ILIM=VOUT
2
2. VOUT from 1.5V to 3.6V
576
720
864
ILIM=open
800
1000
1200
P-Channel on resistance
0.4
0.8
Ω
Maximum Duty Cycle
At VIN=3.6V
100
%
tON
Minimum On-Time
Current limit is not attained to turn
off the switch before the minimum
on-time expired
810
12
µs
tOFF
Minimum Off-Time
0.22
0.42
0.62
µs
IQ
Quiescent Current
Non-switching
30
45
µA
IOUT=500µA
37
µA
ISHDN
Shutdown Current
15
µA
VLO
Shutdown Threshold
SHDN
1
V
IIBN
Logic Input Bias Current
SHDN
1
µA
TSHDN
Shutdown Temperature
150
175
ºC
TSHDN Hysteresis
10
ºC
TJ
Operating Temperature
junction
-40
125
ºC
TAMB
ambient
-40
85
ºC



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